阅读说明：本技术 具有增强的吸油能力的纤维素纤维非织造织物 (The cellulose fibre supatex fabric of oil absorption capacity with enhancing ) 是由 汤姆·卡莱尔 米尔科·恩泽曼 吉塞拉·哥德哈姆 M·约翰·海赫斯特 凯瑟琳娜·迈尔 *** 于 2018-03-28 设计创作，主要内容包括：本发明描述了直接从莱赛尔纺丝溶液(104)制造的纤维素纤维非织造织物(102)。织物(102)包括基本上连续的纤维(108)的网络,其中织物(102)表现出至少1900质量％的吸油能力。本发明进一步描述了一种用于制造这种织物(102)的方法和装置、包括这种织物的产品或复合材料、以及这种织物(102)的各种用途。(The present invention describes the cellulose fibre supatex fabric (102) directly manufactured from lyocell spinning solution (104).Fabric (102) includes the network of substantially continuous fiber (108), and wherein fabric (102) shows the oil absorption capacity of at least 1900 mass %.The various uses of method and apparatus, the product including this fabric or the composite material and this fabric (102) that present invention further describes a kind of for manufacturing this fabric (102).)

1. a kind of cellulose fibre supatex fabric (102), the fiber especially directly manufactured from lyocell spinning solution (104) Cellulose fiber supatex fabric, the fabric (102) include:

The network of substantially continuous fiber (108), wherein the fabric (102) shows the oil suction energy of at least 1900 mass % Power,

Wherein, the mass area ratio of the fabric (102) is less than 150 grams/m,

Wherein the net list reveals the fusion coefficients of the fiber (108) between 0.5%-10%,

Wherein the cellulose fibre supatex fabric (102) is substantially only made of cellulose.

2. the fabric according to preceding claims (102), wherein

The mass area ratio of the fabric (102) is less than 100 grams/m, and especially less than 50 grams/m, particularly It is less than 20 grams/m.

3. fabric (102) according to claim 1 or 2, wherein

At least some individual fibers it is wrapped around one another and/or

At least one other fibre structure and another fibre structure are wound.

4. fabric (102) according to any one of the preceding claims, wherein

The fabric (102) shows at least 2100 mass %, especially at least 2300 mass %, more particularly at least 2500 matter Measure the oil absorption capacity of %.

5. fabric (102) according to any one of the preceding claims, wherein

Different fibers (108) is at least partially situated at different distinguish in layer (200,202).

6. the fabric according to preceding claims (102) comprising at least one of following characteristics:

At least one interlayer of the fiber (108) of different layers (200,202) between the layer (200,202) merges position (204) it links into an integrated entity at；

It is different in fibre diameter to be at least partially situated at the different fibers (108) in different layers (200,202), especially exists It is different in avarage fiber diameter；

Fiber (108) fibre diameter having the same of different layers (200,202), especially has basically the same average fibre Tie up diameter；

Fiber (108) network of different layers (200,202) provides different functions, wherein different functions especially includes in following At least one: different wicking, different anisotropy behaviors, different liquid absorption capacities, different cleaning capacity, no Same optical characteristics, different roughness, different smoothnesses and different mechanical performances.

7. the fabric (102) according to any one of preceding claims 5 and 6, wherein

The network of fibers of different layers has different fusion coefficients.

8. fabric (102) according to any one of the preceding claims, wherein the fiber (108), which has, is less than 5ppm Copper content and/or nickel content less than 2ppm.

9. a kind of directly manufacture cellulose fibre supatex fabric (102) from lyocell spinning solution (104), especially aforementioned power The method of fabric (102) described in any one of benefit requirement, which comprises

Squeeze lyocell spinning solution (104) by the injector (122) with aperture (126) It is arrived in condensable fluid (106) atmosphere out, to form substantially continuous fiber (108)；

The fiber (108) are collected on fiber support unit (132), to form the fabric (102)；

The technological parameter of manufacturing process is adjusted, so that the fabric (102) shows the oil absorption capacity of at least 1900 mass %,

Wherein, the mass area ratio of the fabric (102) is less than 150 grams/m,

Wherein the net list reveals the fusion coefficients of the fiber (108) between 0.5%-10%,

Wherein the cellulose fibre supatex fabric (102) is substantially only made of cellulose.

10. the method according to preceding claims, wherein

Adjusting process parameter includes at least one of following characteristics:

After the lyocell spinning solution (104) leaves aperture (126) and the lyocell spinning solution (104) reaches institute State the lyocell spinning solution (104) that is squeezed out by triggering by different apertures (126) before fiber support unit (132) it Between interaction formed at least partly merge position (204)；

By being laid on fibre in fiber (108) after the lyocell spinning solution (104) reaches fiber support unit (132) The solidification of triggering at least partly fiber (108), which is formed, when tieing up on support unit (132) at least partly merges position (204)；

There are multiple injectors (122) of aperture (126) along moveable fiber support unit (132) arranged in series, in fibre The first layer (202) of deposit fiber (108) on support unit (132) is tieed up, and the interface between layer (200,202) is extremely Before the solidification of small part fiber (108) is completed, the second layer (200) of deposit fiber (108) on first layer (202).

11. the method according to any one of preceding claims 9 and 10, further comprising:

Fiber (108) and/or the fabric (102) described in in-situ treatment after being collected on fiber support unit (132), especially It is to be handled by least one of Hydroentangled, needle thorn, dipping, the steam treatment carried out with steam under pressure and calendering.

12. one kind is for directly manufacturing cellulose fibre supatex fabric (102) from lyocell spinning solution (104), especially For manufacturing the device (100) of the fabric according to any one of preceding claims 1-8, described device (100) includes

Injector (122) with aperture (126) is configured for squeezing out lyocell spinning under the auxiliary of air-flow (146) Silk solution (104)；

It solidifies unit (128), is configured for providing condensable fluid (106) for the lyocell spinning solution (104) of extrusion Atmosphere, to form substantially continuous fiber (108)；

Fiber support unit (132) is configured for collecting fiber (108), to form the fabric (102)；With

Control unit (140) is configured for adjusting technological parameter, so that fabric (102) shows at least 1900 matter The oil absorption capacity of % is measured,

Wherein, the mass area ratio of the fabric (102) is less than 150 grams/m,

Wherein the net list reveals the fusion coefficients of the fiber (108) between 0.5%-10%,

Wherein the cellulose fibre supatex fabric (102) is substantially only made of cellulose.

13. a kind of application method of cellulose fibre supatex fabric (102) according to claim 1 to 8, The cellulose fibre supatex fabric (102) is used for drier sheet material, facial mask, health product, cloth for cleaning, filter, doctor Treatment application product, geotextile, geotextile, clothes, Building technology product, automobile product, furniture, industrial products, with Leisure, beauty, movement or the relevant product of travelling, and product relevant to school or office.

14. a kind of product or composite material, it includes the cellulose fibre according to any one of preceding claims 1-8 is non- Woven fabric.

Technical field

The present invention relates to cellulose fibre supatex fabric, the method for manufacture cellulose fibre supatex fabric, manufacture are fine Device, product or the composite material of cellulose fiber supatex fabric and the application method of this fabric.

Background technique

Lyocell (Lyocell) technology is related to cellulose wood pulp or other cellulose-based source materials being directly dissolved in polarity molten To generate viscosity, high shear in agent (for example, N-methylmorpholine N- oxide, can also be expressed as " amine oxide " or " AO ") Thinning solution, the solution can be converted into a series of useful cellulosic-based materials.Commercially, the technology is for producing extensively A series of short fiber of cellulose for textile industry are (available commercially from Lenzing AG, Lenzing, Austria, trade mark).Also use other cellulose products from lyocell technology.

Short fiber of cellulose is used as the component to be converted to nonwoven web for a long time.However, improving lyocell skill Art is directly to produce the characteristic and performance that nonwoven web can not have acquisition current fibre element net product.This can be recognized To be the widely used cellulose version for being meltblown (meltblow) and spunbond technology in synthetic fiber industry, however, due to existing Great technological disparity, it is impossible to synthetic polymer technology be made to be directly applied for lyocell.

Many researchs have been carried out to develop technology (the especially WO for directly forming cellulose net from lyocell solution 98/26122、WO 99/47733、WO 98/07911、US 6,197,230、WO 99/64649、WO 05/106085、EP 1 358 369,EP 2 013 390).Other technologies are disclosed in 07/124522 A1 of WO 07/124521 A1 and WO.

It is well known that cellulosic material is hydrophilic rather than oleophylic.In numerous applications, this is containing cellulose product Admirable characteristic.However, lipophilic or significant oil absorption capacity is also welcome in many (potential) applications 's.This can improve availability of the cellulosic material for the product of known applications, and cellulose products can be made to be suitable for Heretofore unknown new opplication.

Summary of the invention

Cellulosic material, the especially oil absorption capacity of cellulose fibre supatex fabric may be needed to be improved.

It can satisfy the demand according to subject matter of the independent claims.Subclaims describe advantageous realities of the invention Apply scheme.

According to the first aspect of the invention, a kind of cellulose fibre supatex fabric is provided, particularly directly by Lay The manufacture of Sai Er spinning solution.Provided fabric includes the network of substantially continuous fiber.The fabric exhibits go out at least 1900 The oil absorption capacity of quality %.

The fabric is based on such idea, it can thinks that non-woven fabric or network of fibers represent a kind of knot Structure, the structure include a plurality of cavities formed between each adjacent fiber or gap.Fabric it is original it is non-be impregnated with state under, These gaps are filled with air.When fabric absorbs oil, gap is filled by (liquid, semifluid or paste) oil or fat particles, The size of the oil or fat particles is at least approximately suitable for the size in each gap.

In the exemplary physical picture, multiple gaps in fabric can be regarded as and represent multiple capillary cages (capillary cage), can accommodate oil wherein.In this regard it is noted that in load/unload fluid, capillary Cage tool has capillary hysteresis effect.It means that the equilibrium transport ratio with the cage for being loaded with liquid, in order to enter liquid in cage, Need higher pressure (in the case where contact angle is greater than 90 °) or higher capillarity attraction (in feelings of the contact angle less than 90 ° Under condition).About the stability of oil suction, it is essential that stability of the liquid oil particles in its gap how.Specifically, oily Particle is more housed stably in gap, and oil absorption capacity is bigger.The stability of " receiving " depends on capillary condition, especially (a) size of gap or cavity is depended on, and (b) depends on the contact angle according to basic physical principle, is depended on involved And material surface nature.Further, it should be apparent that the degree of oil absorption capacity depends on (appropriately sized) sky in fabric The density of gap.

It has been found that the parameter of the size for adjusting capillary cage is so-called fiber number value (titer value), refer to Show the diameter of fiber.In the case that fiber number value in network of fibers or fabric changes, can provide largely has different sizes Capillary cage, to absorb various sizes of oil particles.It says in descriptive manner, certain adjustment in fiber manufacture process may turn Turn to the variation of distribution of fiber diameters in entire fabric.

In this regard it has been noted that not only the size in gap but also the geometry in gap are all in each cavity interior suction Receive the parameter of the affinity of oil particles.In this respect, further details are provided below for fusion coefficients, the fusion coefficients pair It is also very important parameter for oil absorption capacity.

In order to determine the oil absorption capacity (or liquid absorption capacity) of fabric, engine oil can be used according to Edana standard NWSP 010.4.R0 (15) carries out the analysis and assessment in relation to absorbing oil & fat liquid.In order to be analyzed, using having a size of The fabric sample of 10cm × 10cm.It determines the weight of sample, sample diagonal line is then connected to ruler with rope (string). Then sample is put into the container equipped with oil.Measurement time needed for oily wet fabric.Then, fabric is dipped in oil 120 seconds.Then fabric is put forward from oil by lifting ruler.Hereafter, oil is allowed to drip 30 seconds from fabric.Determination is oily The weight of the fabric soaked, and the original weight by subtracting fabric sample from the weight of the wet sample of oil immersion and calculate opposite Oil absorption capacity is calculated in the mass percent of the oil suction weight of the dry weight of fabric sample absorbed.

About the experimental study of lotion (i.e. the mixture of oiliness and water composition), water composition enters capillary interstice Capture velocity or wicking rate cause to pull oil components and water composition simultaneously.It therefore, can also for the application of this lotion To consider this effect of dragging.Specifically, when suitably designing for the netted structure choice of fabric, not only it is considered as the fabric Capillarity between structure and oil or oily components, and be also contemplated that between the network structure and aqueous components of the fabric Capillarity.It says in descriptive manner, aqueous components can push or drag oily components and pass through between the fabric and oil particles Oleophobic barrier (oleophobic barrier), and generate improved oil absorption capacity.Due to this liquid handling performance, this effect Fruit can be particularly advantageous for the mask with relatively low base weight.

Experimental study further discloses, and the fabric shows the systematicness or order of height in its space structure. This attribute makes the size and/or shape that gap can be more easily adjusted by proper choice of process parameter value.Not by specific object Theoretical constraint, it can be seen that the physical cause of the high order of the fabric or even crystallinity is lyocell fibre The obvious polarity of dimension, three hydroxyls based on each monomeric unit.When manufacturing the fabric, due to glucose molecule reality On be arranged in the chain comprising hundreds of such molecules and hardly by the pollution of any other like glucose molecule, because This obtains mentioned high order.Hydroxyl forms the ordered network of hydrogen bond, this allows to understand the fabric Following characteristic: (a) high-crystallinity, (b) high hydrophilicity, (b) high water holding capacity, (c) thermosetting property (no fusing point) (s) comes from The coagulation ability of aqueous N- Methyl-morpholine (NMMO) solvent, and (e) depending on the intrinsic antistatic property of humidity.

It is noted that by the technological parameter for controlling lyocell spinning solution manufacturing process in the right way, it can be with In the case where not carrying out any other (further) processing to fabric, is not especially applying and/or changed using any other In the case where learning substance, the oil absorption capacity is realized.This can provide the following advantages: the final products comprising the fabric will Automatically any residue of such chemical substance is free of.

In the context of this application, term " cellulose fibre supatex fabric " (can also be expressed as cellulosic filaments Supatex fabric) it can particularly indicate the fabric or net that are made of multiple substantially continuous fibers.Term is " substantially continuous Fiber " especially with filament fiber meaning, filament fiber have length more significantly greater length of than conventional staple.In another kind In expression way, term " substantially continuous fiber " especially can have the meaning of the net formed by filament fiber, the long filament Fiber has every volume obviously lesser amount of fiber ends than conventional staple.Particularly, exemplary embodiment party according to the present invention Every volume fiber powder of the continuous fiber of the fabric of case looks less than 10,000 end/cm up and down³, especially less than 5,000 End/cm³.For example, they can have the length (allusion quotation corresponding to cotton fiber of 38mm when staple fiber is used as the substitute of cotton Type natural length).In contrast, the substantially continuous fiber of cellulose fibre supatex fabric can have at least 200mm's Length, especially at least 1000mm.However, it will be appreciated by persons skilled in the art that even if continuous cellulose fibre may also in The disconnected fact, the technique during and/or after which may be formed by fiber are formed.Therefore, and by identical danier Supatex fabric made of staple fiber is compared, the cellulose fibre supatex fabric made of substantially continuous cellulose fibre With significant lower every fine fiber number.Cellulose fibre supatex fabric can pass through spinning plurality of fibers and by will after Person refines (attenuating) and stretches towards the fiber support unit preferably moved to manufacture.Cellulose fibre is formed as a result, Three dimensional network or net, constitute cellulose fibre supatex fabric.The fabric can be by cellulose as main or sole component.

In the context of this application, term " lyocell spinning solution " can particularly show solvent (for example, such as N- first Base-morpholine, NMMO, " amine oxide " or " AO " material polar solvent), wherein cellulose (such as wood pulp or other celluloses Based raw material) dissolution is wherein.Lyocell spinning solution is solution rather than melt.By the concentration of reduction solvent, such as pass through It contacts long filament with water, cellulosic filaments can be generated by lyocell spinning solution.Fibre is initially generated by lyocell spinning solution The process of cellulose fiber can be described as solidifying.

In the context of this application, term " air-flow " can particularly indicate to leave spinning head in lyocell spinning solution During and/or after or after having been moved off spinning head, be basically parallel to cellulose fibre or its preform (i.e. lyocell spinning Solution) moving direction air-flow (such as air).

In the context of this application, term " condensable fluid " can particularly show non-solvent fluid (i.e. gas and/or liquid Body optionally includes solid particle), lyocell spinning solution can be diluted and extremely formed by lyocell long filament with exchange of solvent The degree of cellulose fibre.For example, this condensable fluid can be water mist.

In the context of this application, term " technological parameter " can particularly indicate that cellulose fibre is non-to be knitted for manufacturing The substance of fabric and/or all physical parameters and/or chemical parameters and/or device parameter of device assembly are made, which may The performance of fiber and/or fabric, especially fibre diameter and/or distribution of fiber diameters are had an impact.These technological parameters can To be automatically adjusted by control unit and/or be manually adjusted by user, so as to adjust or adjust cellulose fibre supatex fabric Fiber performance.May influence fibre property physical parameter (especially its diameter or diameter distribution) can be this during Temperature, pressure and/or the density for the various media (such as lyocell spinning solution, condensable fluid, air-flow etc.) being related to.Chemistry ginseng Number can be concentration, the amount, pH value of related medium (such as lyocell spinning solution, condensable fluid etc.).Device parameter can To be the distance between the distance between size and/or the aperture in aperture, aperture and fiber support unit, fiber support unit Travelling speed, offer, the air-flow of one or more optional post-processing units in situ etc..

Term " fiber " can particularly indicate to wrap the elongated segment of cellulose-containing material, such as cross section is roughly circular Or non-regular shape, optionally wound with other fibers.The aspect ratio of fiber can be greater than 10, particularly greater than 100, particularly It is greater than 1000.Aspect ratio is the ratio between fibre length and fibre diameter.Fiber can be by fusion (so that being formed whole Stringy texture) or generation when the mobile fiber being physically contacted between each other (so that fiber keeps separation, but passed through by friction The weak mechanical couplings of frictional force) be connected with each other, to form network.Fiber can have a substantially cylindrical shape, however its It can be straight, curved (bent), (kinked) or curved (curved) to twist together.Fiber can be by single homogeneous material (i.e. cellulose) composition.However, fiber also may include one or more additives.Such as fluent material of water or oil can gather Between the fibers.

According to an embodiment of the invention, the mass area ratio of fabric is less than 150 grams/m, especially less than 100 Gram/m, further particularly less than 50 grams/m, even more particularly less than 20 grams/m.

The oil absorption capacity with the fabric compared with subsection area quality is improved, it is available that the advantages of these fabrics can be it In a variety of applications for needing for example thin cloth for cleaning.

The term " mass area ratio " being previously mentioned is also commonly referred to as base weight.

Another embodiment according to the present invention, the network are shown between 0.1%-100%, special It is not the fusion coefficients of the fiber between 0.5%-10%.

In order to determine the fusion coefficients (being referred to as area fusion coefficients) of fabric, process identified below can be executed: It can be with the square sample of optical analysis fabric.Each of the fiber intersected around at least one diagonal line with square sample It merges position (especially merging point, fusion pad and/or fusion line) and draws the circle with certain diameter, diameter of a circle must be complete It is retained in inside square sample.The size of circle is determined, so that circle includes the integration region between fusion fiber.Calculating determines Diameter of a circle value arithmetic mean of instantaneous value.Fusion coefficients are calculated as the catercorner length of the mean diameter value and square sample Between ratio, and can be given as percentages.

Zero or 0% fusion coefficients correspond to the fabric of no any merging point, i.e., only pass through hydrogen bond or friction between fiber Make the fiber being kept completely separate interacted with each other.1 or 100% fusion coefficients describe a kind of fabric, the fabric is by forming The fully unitary fiber of the continuous structure of such as film is constituted.By adjusting fusion coefficients, the physics of respective fabric can also be adjusted Property (especially mechanical stability).

By controlling fusion coefficients, several performances of adjustable gained fabric.With oil absorption capacity, especially It can control the cavity between fiber or long filament.The fabric construction of customization may be implemented, especially in the variation of binding fiber diameter It is the case where absorption for high oil or rouge.

In one embodiment, (merging point) fusion position is asymmetric in entire fabric and/or anisotropically Distribution.It means that for the different volumes part of fabric, part between fusion coefficients, the density of merging point or indicating fiber Any other parameter of the degree merged can be different.For example, the fabric formed by two layers can be by with larger fusion One layer and another layer of composition with smaller fusion coefficients of coefficient.Each layer of fusion coefficients can pass through the formation of this layer It adjustment or technology controlling and process and independently or is differently adjusted by the adjustment of another layer of formation or technology controlling and process.

Another embodiment according to the present invention, at least some individual fibers are wrapped around one another and/or at least one its He winds fibre structure with another fibre structure.This can (further) mechanical stability for improving the fabric.

In the context of this article, " fibre structure " can be any fiber arrangement including at least two fibers.Therefore, Fiber can be the individual fiber being at least partly in contact with each other.Alternatively or in combination, fibre structure be also possible to include The structure of at least two fibers, at least two fibers link into an integrated entity at least one fusion position.

Another embodiment according to the present invention, the fabric exhibits go out at least 2100 mass %, especially at least 2300 Quality %, and the more particularly at least oil absorption capacity of 2500 mass %.

It is mentioned that (inherently showing very small suction due to its cellulosic material using for manufacturing fabric Oily ability) suitable process parameter value, may be implemented with polyethylene terephthalate (PET) (its property be height parent Oil material) oil absorption capacity same order oil absorption capacity.In addition, the oil absorption capacity is even greater than certain process tests Polypropylene (PP) fabric oil absorption capacity.

Another embodiment according to the present invention, different fibers are at least partially situated at different distinguish in layer. In this case, " differentiable " refer in particular to fabric at least for example by electron microscope captured image layer it Between show visible separation or interface zone.

It says in descriptive manner, the fabric exhibits go out multilayered structure, and wherein at least two network layer is formed on top of each other.It is logical Cross by a variety of different network layers in quality and/or quantity with it is different it is functional in a manner of control technological parameter, entirely The physically and/or chemically property of fabric can be adjusted in a particular manner to adapt to many specific applications.This can show Write the technical applications for widening the fabric.

At least treble cloths can be used for such as cloth for cleaning, and wherein internal layer can preferably be soaked with liquid, especially oiliness Liquid, the liquid passes through at least one outer layer in a controlled manner and discharges during use.It as a result, for example can be suitable by selecting Fiber diameter range adjust each layer of different function characteristic.

The maximum quantity for the network layer of stacking is referred to without theoretical limitation.Depending on specifically applying, Ke Yisheng It produces by 2-4 or even more, such as the multilayer fabric of the 5-20 network layer composition stacked.

Compared with known multilayer fabric, interlayer fusion position or interlayer merging point allow to be connected with each other between two layers, and Without using any additional jointing material, this substantially will include at least one for penetrating into two network layers to a certain extent Inside.In addition, being connected with each other the appointing into the layer for being appointed as another type of fiber independent of a type of fiber What is permeated.As a result, when tearing two layers, this may be in some applications it is desired, by the fibrous fracture of only minimum, and And the surface of each layer previously adhered to will there is no flash.In addition, it is expected that tear and only result in least fluffing (linting)。

Due to the fact that not needing additional adhesion material to make two layers of interconnection, therefore side that can be compatible with environment Formula realizes fabric.Specifically, the multilayer fabric can be used for the product of totally biodegradable.In addition, between adjacent layers There is no any additional adhesion materials (for example, adhesive) may provide an advantage in that liquid can be on each bed boundary Diffusion is without any obstacle.

Another embodiment according to the present invention, fabric includes at least one of following characteristics:

(a) it links into an integrated entity at least one interlayer fusion position of the fiber of different layers between the layers；

(b) the fibre diameter difference of the different fibers in different layers, especially avarage fiber diameter are at least partially disposed at not Together；

(c) fiber of different layers fibre diameter having the same, especially has basically the same avarage fiber diameter；

(d) network of fibers of different layers provides different functions, wherein different functions especially include in following at least It is a kind of: different wicking, different anisotropy behaviors, different liquid absorption capacities, different cleaning capacities, different light Learn characteristic, different roughness, different smoothnesses and different mechanical performances.

As described above, the interlayer fusion position in (a) item can be by having aperture for two (or multiple) Injector arranged in series and formed, by the aperture squeeze out lyocell spinning solution for solidify and fiber formed.When this When arrangement is combined with mobile fiber support unit (such as conveyer belt with fiber-receiving surface), first layer fiber passes through the One injector is formed on fiber support unit, and when mobile fiber support unit reaches the position of the second injector, Second injector forms second layer fiber on the first layer.The technological parameter of adjustable this method, so as in first layer and Merging point is formed between two layers.

In the context of this application, term " fusion " can particularly indicate the phase of the difference fiber at each fusion position It connects, this results in the fibre structure of an integrated connection, and the structure is independent by previous two relevant to different layers Fiber composition.The fiber of interconnection can be adhered to each other merging point is firmly with each other.Particularly, for example, in forming process Solidification is not yet passed to be fully cured or the fiber of solidified second layer, can still have in liquid lyocell solution phase and It is not yet in the solid external skin or surface region being fully cured.When this prefibers structure be in contact with each other and after When solid fiber state is fully cured into, this can lead to interface between the different layers and forms two fusion fibers.Merging point Quantity it is more, the stability of the interconnection between tissue layer is higher.Therefore, control fusion allows to control the connection between tissue layer Rigidity.For example, passing through the fiber or prefabricated under adjusted on the prefibers structure arrival fiber support plate of equivalent layer Solidification or coagulation grade before fibrous structure plies, can control fusion.By the fibre for merging different layers in the interface of interlayer Dimension, can prevent the undesirable separation of layer.Between the layers without merging point in the case where, one layer of fiber may be with another layer Fiber spin-off.

As described above, in (b) item, when the different layers of fabric are by having the fiber of different (average) diameters to be formed When, the mechanical performance of different layers can be adjusted respectively and differently.For example, can be by using the fibre with considerable larger diameter Dimension for one layer therein provides rigidity characteristic, and other layers can provide smooth or elastic feature (such as by using having The fiber of relative small diameter).For example, can manufacture have by mechanical removal dirt be used for clean rougher surface with And the cloth for cleaning with the relatively smooth surface for wiping, that is, it is configured for from Surface absorption water etc. to be cleaned.

If the fiber of different layers has identical (average) diameter of above (c) Xiang Suoshu, adjacent layer can have similar Or identical physical property.It strong or weak can be interconnected between merging point between them.This merging point of each interface zone Quantity can define the bond strength between adjacent layer.Since bond strength is small, user can easily be separated each layer. By high bond strength, these layers can keep for good and all being attached to each other.

Another embodiment according to the present invention, the network of fibers in different layers have different fusion coefficients.This can To help to improve the mechanical stability of the fabric.

Specifically, when fiber continuous in the manufacturing process in the fabric touches downwards the fiber support of collection fiber When unit, by controlling the fusion coefficients in height-direction or the direction z- along the plane perpendicular to layer, it may be implemented certain pre- Add tension.The distribution depending on the different fusion coefficients of height can permit foundation " power absorption spring system " as a result, generate High mechanical stability and when in oil particles insertion fabric, is effectively prevented under the pressure of adhesion strength in the fabric The capillary cavity of formation or collapsing for gap.

Another embodiment according to the present invention, fiber is with the copper content less than 5ppm and/or has less than 2ppm Nickel content.The ppm value mentioned in the application is all related with quality (rather than volume).In addition to this, individually for every kind The heavy metal pollution of heavy metal element, fiber or fabric can be no more than 10ppm.Due to using lyocell spinning solution as shape At the basis (especially when being related to such as solvent of N- Methyl-morpholine, NMMO) of continuous fiber based fabric, such as copper or nickel Heavy metal (allergic reaction that may cause user) minimum can be kept to the pollution of fabric.

According to another aspect of the present invention, provide that a kind of directly cellulose fibre is non-knits from the manufacture of lyocell spinning solution Make fabric, the method for fabric especially as described above.Provided method includes: (a) under the auxiliary of air-flow, makes lyocell Spinning solution is expressed into condensable fluid atmosphere by the injector with aperture, to form substantially continuous fiber；(b) The fiber is collected on fiber support unit, to form the fabric；(c) technological parameter for adjusting manufacturing process, makes It obtains the fabric exhibits and goes out at least oil absorption capacity of 1900 mass %.

Provided method is based on such idea, it can a plurality of cavities or sky are formed between various adjacent fibers Gap.By selecting technological parameter appropriate, the size and/or shape in these gaps can be suitably determined.In the original of fabric Non- to be impregnated under state, these gaps are filled with air.When fabric absorb oil when, gap by (liquid, semifluid or paste) oil or The size of fat particles filling, the oil or fat particles is at least approximately suitable for the size in each gap.

In the context of this document, " injector with aperture " (it can for example be referred to as " arrangement in aperture ") can Be include linear arrangement aperture arrangement any structure.

An embodiment according to the present invention, adjusting process parameter includes at least one of following characteristics:

(a) after the lyocell spinning solution leaves aperture and the lyocell spinning solution reaches the fiber branch The interaction passed through between the lyocell spinning solution that triggering is squeezed out by different apertures before support unit forms at least portion Divide fusion position；

(b) the lyocell spinning solution reach fiber support unit after by fleece-laying in fiber support list The solidification of triggering at least partly fiber, which is formed, when in member at least partly merges position；

(c) there are multiple injectors in aperture along moveable fiber support unit arranged in series, in fiber support list The first layer of deposit fiber in member, and interface between layers at least partly fiber solidification complete before, first The second layer of deposit fiber on layer.

In (a) item after the lyocell spinning solution leaves aperture and the lyocell spinning solution arrives It is formed before up to the fiber support unit and at least partly merges position, can passed through for example, by being triggered while downward accelerate Interaction between the strand (strand) for the lyocell spinning solution that different aperture squeezes out is realized.For example, can be Air-flow is adjusted in terms of speed and direction, so that the different strands or long filament of (not yet solidifying completely) spinning solution reach fiber It is forced to interact with each other in a lateral direction before support unit.Air-flow, which can be operated, makes it near or at grasping under turbulence state Make air-flow, the interaction between various preforms to promote fiber.Therefore, before curing, fiber is each preforming Body can be in contact with each other, to form fusion position.

As described above, being formed at least after lyocell spinning solution reaches fiber support unit in (b) item Partial fusion position can be realized by intentionally retarded coagulation process.The delay can pass through the corresponding operating of solidification unit It adjusts, especially by the property and supply position for adjusting accordingly condensable fluid.More specifically, can be with retarded coagulation process Until spinning solution reaches fiber support plate.In such embodiments, the preform of fiber still arrives before curing Up to fiber support unit, to be still to be contacted before curing with other preforms of fiber.It is possible thereby to force different stocks The spinning solution of line or preform is flowed and is in contact with each other, and only can trigger or complete hereafter to solidify.Therefore, still Solidification is so carried out after the initial contact between the different fiber preform bodies in non-condensable state forms fusion position Effective measures.

As described above, there are the more of aperture along moveable fiber support unit arranged in series in (c) item A injector and following steps can help to realize oil absorption capacity appropriate.Accordingly, for each layer to be formed, can adjust Section operation has the technological parameter of the injector in aperture, to obtain the proprietary solidification behavior of layer.The layer of adjustable different layers is special There is solidification behavior, so that (in layer) fusion position is formed in equivalent layer, and (interlayer) merges position shape between adjacent layers At.More specifically, adjustable technology controlling and process, so that only after the initial contact between the relevant spinning solution of different layers Promote two layers of solidification, to form fusion position between two adjacent layers.

Another embodiment according to the present invention, this method further include locating in situ after collecting on fiber support unit Manage the fiber and/or the fabric.It particularly includes at least one of the following that this, which is further processed: Hydroentangled, needle thorn, Dipping carries out steam treatment and calendering with steam under pressure.

This processing in situ can be (especially substantially continuous) fabric in manufacture and be stored (such as by up- coiler Winding) to transport those of progress processing before of product manufacturing destination.For example, this be further processed or post-process possibility It is related to Hydroentangled.Hydroentangled to be expressed as wet or dry fibrous web adhesion process, gained bonded fabric is nonwoven Object.Hydroentangled that thin high-pressure water jet can be used, which penetrates web, hits fiber support unit and (especially passes Send band) and rebound, lead to fibre matting.Fabric can be made more compact the corresponding compression of fabric and mechanically more stable.Water removal Except power is tangled or alternatively, steam treatment can be carried out to fiber with steam under pressure.Additionally or alternatively, It is this that be further processed or post-process may include carrying out needling treatment to manufactured fabric.Needle thorn system, which can be used for bonding, knits The fiber of object or web.When pricker pass through web force some fibre pass through web, and when a needle is withdrawn they When retaining there, needle punched fabric can be produced.If suitably moving enough fibers, these fiber plugs can be passed through Web is transformed into fabric by consolidation.Another of web or fabric further processing or post-processing are impregnations. It impregnates continuous network of fibers and can be related to apply on the fabric one or more chemicals and (such as softening agent, hydrophobing agent and resist quiet Electric agent etc.).Another further processing processing of fabric is calendering.Calendering can be expressed as the rear whole process of processing fabric, and And smooth calender, coating and/or compression fabric can be used.

According to another aspect of the present invention, it provides a kind of for directly manufacturing cellulose fibre from lyocell spinning solution Supatex fabric, and it is especially the device for manufacturing fabric as described above.Provided device includes: that (a) has hole The injector of mouth is configured for squeezing out lyocell spinning solution under the auxiliary of air-flow；(b) unit is solidified, is matched It is set to for providing condensable fluid atmosphere for the lyocell spinning solution of extrusion, to form substantially continuous fiber；(c) fine Support unit is tieed up, is configured for collecting fiber, to form the fabric；(d) control unit is configured to use In adjusting technological parameter, so that fabric exhibits go out at least oil absorption capacity of 1900 mass %.

Described device is based on such idea, i.e. control unit allows to carry out in a reliable fashion above-mentioned above-mentioned for manufacturing The method of cellulose fibre supatex fabric.

According to another aspect of the present invention, a kind of side using cellulose fibre supatex fabric as described above is provided Method.The fabric is used for drier sheet material, facial mask, health product, cloth for cleaning (wipe), filter, medical applications product, geotechnique Fabric, geotextile (agrotextile), clothes, Building technology product, automobile product, furniture, industrial products, with stop Spare time, beauty, movement or travel relevant product and product relevant to school or office.

When the fabric is used for drier sheet material, oil absorption capacity can be used for being deposited on dryer (laundry Dryer the active constituent discharged in the drying process carried out in).For example, release process can be by being heat-shrinked and accordingly squeezing Cavity containing oil particles carries out.

When the fabric is used for facial mask, from the big reception ability to the oil and/or emulsion for being best suited for human skin In can obtain special benefit.

When carrying out clean wiping using above-mentioned fabrics, such as household rag, do not using any chemical substance or surface When removing the oiliness residue in kitchen in the case where activating agent, it can be benefited from high oil absorption rate.

The high oil absorption rate of the fabric for personal nursing cloth for cleaning, such as do not need it is any containing surfactant Lotion in the case where remove cosmetics, may be also particularly advantageous.

According to another aspect of the present invention, a kind of production comprising cellulose fibre supatex fabric as described above is provided Product or composite material.

According to the present invention the cellulose fibre supatex fabric of exemplary implementation scheme can also with it is one or more other Combination of materials (such as in situ or in the subsequent process), to form the composite material of exemplary implementation scheme according to the present invention. The exemplary materials that this composite material can be formed with fabric combination can be selected from including but not limited to following material or combinations thereof Material: Time of Fluff Slurry, fibrous suspension, wet-laid non-woven fabric, air-laid nonwoven fabrics, spunbond net, meltblown web, Careless spun lacing or needle-punched web or other laminated structures made of a variety of materials.In one embodiment, between different materials Connection can be completed by one of (but being not limited to) following methods or combination: fusion, Hydroentangled, needle thorn, hydrogen bond It closes, be thermally bonded, by adhesive gluing, lamination and/or calendering.

Hereinafter, showing comprising the cellulose fibre supatex fabric of exemplary implementation scheme according to the present invention is summarized Example property advantageous product or the according to the present invention purposes of the cellulose fibre supatex fabric of exemplary implementation scheme:

Net (100% cellulosic fibrous web or for example comprising net that is following or being made up of: two or more fibers or The fiber of chemical modification or material (such as anti-biotic material, ion exchange material, active carbon, nano particle, cream with incorporation Liquid, medicament or fire retardant) fiber or bicomponent fibre) particular use can be such that

The cellulose fibre supatex fabric of exemplary implementation scheme can be used for manufacturing cloth for cleaning, such as baby according to the present invention Youngster's cloth for cleaning, kitchen cloth for cleaning, wet wipes, cosmetic wipes, hygienic cloth for cleaning, medical cloth for cleaning, wipe clean towelette, polishing (automobile, furniture) cloth for cleaning, dust cloth for cleaning, industrial wipe, deduster and mop cloth for cleaning.

The cellulose fibre supatex fabric of exemplary implementation scheme can also be used for manufacture filter according to the present invention.Example Such as, this filter can be air filter, HVAC, air conditioner filter, smoke filter, liquid filter, filtered coffee Device, tea bag, coffee bag, food filter, water purification filter, blood filter, cigarette filter；Cabin filter, oily filter Clear device, candle filter, vacuum filter, vacuum cleaner bag, membrane filter, hydraulic filter, kitchen filter, fan Filter, exchange of moisture filter, pollen filters, HEVAC/HEPA/ULPA filter, beer filter, milk filter, Liquid coolant filter and fruit juice filter.

In another embodiment, cellulose fibre supatex fabric can be used for manufacturing absorbent hygiene products.In fact Example is acquisition layer, covering, distribution layer, absorbability covering, panty liner, top drawsheet, backboard, leg cuff, flushable production Product, nursing pad, handle underwear, training pants, facial mask, beauty mask, cosmetics removal pad, towel, diaper and dryer at pad The sheet material of discharge active component (such as fabric softener).

In another embodiment, cellulose fibre supatex fabric can be used for manufacturing medical applications product.For example, this Kind medical applications product can be disposable cap, operation dress, mask and shoe cover, Wound care products, sterilized packaged products, health care Health with breathable fabric product (coverstock products), dressing materials, unidirectional clothes (one way clothing), Dialyse product, ose band, dental lamina adhesive, processing underwear, curtain, package and packaging, sponge, dressing and cloth for cleaning, bedding, Cutaneous penetration object, shroud, pad, operation packet, hot compress bag, ostomy bag liner, fixing belt and incubator mattress.

In another embodiment, cellulose fibre supatex fabric can be used for manufacturing geotextile.This may relate to Crop protection cover, capillary pad, water purification material, irrigation control material, pitch covering, soil stabilization, adrainage material, precipitating and Erosion control material, pond back boxing, dipping basis, discharge conduit back boxing, ground stabilizing material, hole lining, seed blanket, weeds control The production of weaving object, greenhouse sunshade material, root bag and biodegradable plant pot.It can also be by cellulose fibre nonwoven For plant foil, (for example, plant provides light protection and/or mechanical protection to object, and/or provides excrement or kind for plant or soil Son).

In another embodiment, cellulose fibre supatex fabric can be used for manufacturing clothes.For example, lining, clothes Warming and protection, handbag component, shoe parts, belt lining, industry shoes and hats, disposable work clothes, clothes and shoes sack with And warm can manufacture on the basis of this fabric.

In another embodiment, cellulose fibre supatex fabric can be used for manufacturing the product for being used for Building technology. Such as roof and ceramic tile liner, roofing slate pad (underslating), heat-insulated and acoustic material, housewrap object, plasterboard are adornd Face, duct wrap, concrete molding layer, ground and ground stabilizing material, vertical drainage, roofing pan tile, roofing felt, noise reduction This fabric manufacture can be used in material, reinforcement material, sealing material and damping material (machinery).

In another embodiment, cellulose fibre supatex fabric can be used for manufacturing automobile product.Example is main cabin Filter, baggage compartment lining, parcel shelf, heat shield, shelf decoration, molding bonnet liner, baggage compartment floor covering, machine Oil rectifier, headliner, rear parcel shelf, drapery, air bag, silencing pad, insulating materials, auto shield, heelpiece, vapour Car cushion, adhesive tape, backing and tufted carpet, cover for seat, door decorations, needle punched carpet and car carpeting backing.

Another application field of the fabric of exemplary implementation scheme manufacture is furnishings, such as family according to the present invention Tool, building, arm and the insulator at back, double mats, dust cover, lining, suture reinforcer, edge dressing material, on bed Articles construction, quilt backing, spring pocket, mattress component, mattress cover, curtain, wall covering, carpet backing, lampshade, mattress group Part, spring insulator, sealing element, pillowcase and mattress cover.

In another embodiment, cellulose fibre supatex fabric can be used for process industry product.This may relate to Electronic product, cable insulation, abrasive material, insulating tape, conveyer belt, sound absorbing layer, air-conditioning, battery diaphragm, acid system, is prevented floppy disk lining Sliding delustring detergent, food packaging, adhesive tape, sausage casing foil, cheese casing, artificial leather, oil recycling column and socks and felt.

The cellulose fibre supatex fabric of exemplary implementation scheme is also applied for manufacture and leisure and trip according to the present invention The relevant product of row.The example of this application is sleeping bag, tent, luggage case, handbag, shopping bag, airline's headrest, CD guarantor Protection unit, pillowcase and interlayer packaging.

Another application field of exemplary implementation scheme of the invention is related to school and office products.It can be mentioned that Example is book cover, mailing coating, map, mark and pennant, towel He Qi Jian.

It has to be noticed that by reference to different subject descriptions embodiment of the present invention.Particularly, by reference to equipment Type claims describe some embodiments, describe other embodiments by reference to Method type claim.So And those skilled in the art will obtain from described above and below, that, unless otherwise stated, a type of in addition to belonging to Except any combination of the feature of theme, any combination between feature related with different themes, especially in device type Any combination of the feature of claim between the feature of Method type claim is considered to disclose together with this document.

From the example for the embodiment being described below, aspect defined above of the invention and other aspects will become It is clear that and the example of reference implementation scheme is illustrated.It is hereinafter that the example of reference implementation scheme is more detailed The ground description present invention, but the invention is not restricted to this.

Fig. 1 shows the dress for being used to manufacture cellulose fibre supatex fabric of exemplary implementation scheme according to the present invention It sets, which is directly formed by the lyocell spinning solution solidified by condensable fluid.

Fig. 2 to Fig. 4 shows that the experiment of the cellulose fibre supatex fabric of exemplary implementation scheme according to the present invention is caught Image is obtained, wherein realizing the fusion between single fiber by specific technology controlling and process.

Fig. 5 and Fig. 6 shows that the experiment of the cellulose fibre supatex fabric of exemplary implementation scheme according to the present invention is caught Image is obtained, wherein the swelling of fiber is completed, wherein Fig. 5 is shown at the fabric for drying non-swelling state, Fig. 6 display In the fabric of wet solvent swelling state.

Fig. 7 shows the experiment capture figure of the cellulose fibre supatex fabric of exemplary implementation scheme according to the present invention Picture, wherein completing the formation of two stacked fibrous layers by the special process for executing two series nozzle bars.

Fig. 8 shows the experiment capture figure of cellulose fibre supatex fabric in accordance with an exemplary embodiment of the invention Picture, wherein being adjusted to fusion coefficients almost absolutely by technology controlling and process.

The experiment that Fig. 9 shows the cellulose fibre supatex fabric of another exemplary embodiment according to the present invention is caught Image is obtained, wherein fusion coefficients have been adjusted to almost nil by technology controlling and process.

Figure 10 and Figure 11 shows two experiments capture image of two kinds of cellulose fibre supatex fabric, they are not due to With fusion coefficients and show different oil absorption capacities.

Figure 12 show exemplary implementation scheme according to the present invention for manufacturing by two continuous cellulosic fibrous webs Stack layer composition cellulose fibre supatex fabric device a part.

Figure 13 shows the cellulose fibre supatex fabric including three network layers.

The detailed description of attached drawing

Diagram in figure is schematical.It is noted that in various figures, similar or identical elements or features tool There is identical appended drawing reference.In order to avoid unnecessary repetition, the elements or features illustrated in embodiment in front It is repeated no more in the subsequent position of this specification.

In addition, spatially relative term, such as " preceding " and " rear ", "up" and "down", " left side " and " right side " etc., for describing as schemed Shown in an element and another element relationship.Therefore, spatially relative term can be adapted for the orientation in, this takes To the orientation for being different from describing in attached drawing.Obviously, all such spatially relative terms are merely for convenience of describing and referring to attached Orientation shown in figure, is not necessarily limiting, because the equipment of embodiment according to the present invention when in use can be with It takes and is different from orientation shown in the drawings.

Fig. 1 show exemplary implementation scheme according to the present invention for manufacturing cellulose fibre supatex fabric 102 Device 100, the cellulose fibre supatex fabric 102 are directly formed by lyocell spinning solution 104.The latter at least partly by The solidification of condensable fluid 106 is to be converted to the cellulose fibre 108 that part is formed.By device 100, can carry out according to the present invention The lyocell solution spray technology of exemplary implementation scheme.In the context of this application, " lyocell solution sprays work to term Skill " can with particularly including available substantially continuous long filament or discrete length fiber 108 or substantially continuous long filament With the technique of the mixture of discrete length fiber.As described further below, nozzle respectively with aperture 126 is provided, it is fine It ties up plain solution or lyocell spinning solution 104 and is ejected through the nozzle together with gas stream or air-flow 146, to manufacture according to this hair The cellulose fibre supatex fabric 102 of bright exemplary implementation scheme.

From figure 1 it appears that wood pulp 110, other cellulose-based source materials etc. can be supplied to storage by metering units 113 Tank 114.Water from water container 112 is supplied to storage tank 114 also by metering units 113.Therefore, it further retouches in detail below Under the control for the control unit 140 stated, metering units 113 can limit the opposite of the water for being supplied to storage tank 114 and wood pulp 110 Amount.The solvent (such as N- Methyl-morpholine, NMMO) being contained in solvent container 116 can be concentrated in upgrading unit 118, so It afterwards can relative quantity in mixed cell 119 with the mixture of water and wood pulp 110 or other cellulose-based source materials can limit Mixing.Mixed cell 119 can also be controlled by control unit 140.110 medium of water-wood pulp is with adjustable relative quantity molten as a result, It is dissolved in concentrated solvent in solution unit 120, to obtain lyocell spinning solution 104.Aqueous lyocell spinning solution 104 can Be by (such as 5 mass % to 15 mass %) wrap cellulose-containing wood pulp 110 and (such as 85 mass % to 95 mass %) (honey-viscous) medium sticky such as honey of solvent composition.

Lyocell spinning solution 104 is sent to fiber formation unit 124, and (it can be presented as or may include multiple spinning Cabinet (spinning beams) or injector 122).For example, the quantity in the aperture 126 of injector 122 can be greater than 50, especially It is greater than 100.In one embodiment, fiber forms unit 124 (it may include the spinning head of a large amount of injectors 122) All apertures 126 and aperture 126 of injector 122 can be of the same size and/or shape.Alternatively, injector 122 The size in the aperture 126 (it can be with arranged in series to form multilayer fabric) of different orifice 126 and/or different injector 122 and/ Or shape can be different.Aperture 126 can be arranged to the one-dimensional alignment in aperture 126.

When lyocell spinning solution 104 passes through the aperture 126 of injector 122, it is divided into multiple parallel lyocells 104 strand of spinning solution.The air-flow being vertically oriented, i.e. air-flow are oriented substantially parallel to spinning direction, and lyocell is forced to spin Silk solution 104 is transformed into increasingly longer and increasingly thinner strand, this can be by changing work under the control of control unit 140 Skill condition is adjusted.Air-flow can accelerate Lay along its at least part from aperture 126 to the path of fiber support unit 132 Sai Er spinning solution 104.

When lyocell spinning solution 104 is mobile to be passed through injector 122 and move further downward, lyocell spinning solution 104 length and thin strand and non-solvent condensable fluid 106 interact.Condensable fluid 106 is advantageously embodied as barber, Such as containing water mist.The technique correlation properties of condensable fluid 106 are controlled by one or more solidification unit 128, thus for solidification stream Body 106 provides adjustable characteristic.Solidification unit 128 is controlled by control unit 140 again.Preferably, each solidification unit 128 is set It sets between each nozzle or aperture 126, for individually adjusting each layer of performance of the fabric 102 produced.Preferably, Each injector 122 can have two specified solidification units 128, every side one.It therefore, can be to individual injector 122 provide the lyocell spinning solution 104 of unitary part, which also can be adjusted such that manufactured Fabric 102 different layers have different controllable characteristics.

When interacting with condensable fluid 106 (such as water), the solvent strength of lyocell spinning solution 104 is reduced, and is made The cellulose for obtaining the former (such as wood pulp 110 (or other raw materials)), which at least partly solidifies, grows up and thin cellulose fibre 108 (it can still contain residual solvent and water).

During or after the lyocell spinning solution 104 by squeezing out is initially formed individual cellulose fibre 108, fiber Cellulose fiber 108 is deposited on fiber support unit 132, and fiber support unit 132 is embodied as having herein the fiber of plane to hold Receive the conveyer belt on surface.Cellulose fibre 108 forms cellulose fibre supatex fabric 102 and (only schematically shows in Fig. 1 Out).Cellulose fibre supatex fabric 102 is made of continuous and substantially continuous long filament or fiber 108.

Although not shown in FIG. 1, pass through and solidify the lyocell spinning solution that unit 128 removes in process of setting The solvent of 104 solvent and the lyocell spinning solution 104 removed in washing process in washing unit 180 can be at least Partly recycle.

When transporting along fiber support unit 132, cellulose fibre supatex fabric 102 can pass through washing unit 180 washings, then can dry, and washing unit 180 supplies cleaning solution to remove remaining solvent.It can by optionally but have The unit 134 that is further processed of benefit is further processed.For example, this be further processed can be related to Hydroentangled, needle thorn, leaching Stain carries out steam treatment, calendering etc. with steam under pressure.

Cellulose fibre supatex fabric 102 can also be transported coiler 136 by fiber support unit 132, in the volume Cellulose fibre supatex fabric 102 can be collected on device 136 is used as substantially continuous sheet material.Then, cellulose fibre Supatex fabric 102 can be used as the entity that roll transports manufacture product, and the product is for example non-based on cellulose fibre The cloth for cleaning or textile of Woven fabric 102.

As shown in Figure 1, described process can be by (such as a part of processor, processor or more of control unit 140 A processor) control.Control unit 140 is configured for the operation of various units shown in control figure 1, especially measures Unit 113, mixed cell 119, fiber form unit 124, solidification unit 128, are further processed unit 134, dissolution unit 120, one or more of washing unit 118 etc..Therefore, control unit 140 (such as pass through execute computer executable program Code, and/or by executing the control command that is defined by the user) it can accurately and neatly define manufacture cellulose fibre is non-and knit Make the technological parameter of fabric 102.Design parameter in this context be along the air stream in aperture 126, condensable fluid 106 Performance, the driving speed of fiber support unit 132, composition, temperature and/or pressure of lyocell spinning solution 104 etc..It can adjust Other design parameters of section, performance for adjusting cellulose fibre supatex fabric 102 be aperture 126 quantity and/or Mutual distance and/or geometry arrangement, the chemical composition of lyocell spinning solution 104 and concentration etc..It therefore, as described below, can be with Suitably adjust the performance of cellulose fibre supatex fabric 102.This adjustable performance (referring to following detailed description) It can be related to one or more following performances: the amount of the fusion between diameter and/or the diameter distribution of fiber 108, fiber 108 And/or region, the purity level of fiber 108, the performance of multilayer fabric 102, the optical property of fabric 102, fabric 102 fluid Retain and/or fluid release performance, the mechanical stability of fabric 102, the smoothness on 102 surface of fabric, fiber 108 cross section Shape etc..

Although being not shown, each spinning injector 122 may include polymer solution entrance, lyocell spinning solution 104 Injector 122 is supplied to by the entrance.By air intake, air-flow 146 can be applied on lyocell spinning solution 104. Since the inside of injector 122 and the interaction room defined by case of sprayer, lyocell spinning solution 104 passes through Corresponding aperture 126 moves down or accelerates (pulled down lyocell spinning solution 104 by air-flow 146) downwards, and in gas Laterally narrow under the influence of stream 146, so that working as lyocell spinning solution 104 with air-flow 146 together in the environment of condensable fluid 106 In when moving down, form the cellulosic filaments or cellulose fibre 108 being continuously tapered.

Therefore, the method with reference to involved in the manufacturing method of Fig. 1 description may include making 104 (its of lyocell spinning solution Can also be expressed as cellulose solution) it shapes to form liquid strand or potential long filament, it is pulled by air-flow 146 and diameter is shown It writes and reduces, length increases.It can also include passing through condensable fluid 106 before or during forming net on fiber support unit 132 Partially solidified potential long filament or fiber 108 (or its preform).Long filament or fiber 108 form reticulated 102, wash, and do It is dry, and can be further processed as needed (referring to unit 134 is further processed).Long filament or fiber 108 can for example be collected It in such as rotating drum or takes, net is consequently formed.

As the manufacturing method as a result, the selection of especially solvent for use as a result, fiber 108 have be less than 5ppm Copper content and have less than 2ppm nickel content.This advantageously improves the purity of fabric 102.

The lyocell solution of exemplary implementation scheme sprays net (i.e. cellulose fibre supatex fabric 102) according to the present invention It is preferred that one of having the following performance or a variety of:

(i) dry weight of net is 5-300g/m², preferably 10-80g/m²,

(ii) (especially had in the priority date of present patent application according to standard WSP120.6 (corresponding to DIN29073) The latest edition of effect) net with a thickness of 0.05-10.0mm, preferably 0.1-2.5mm,

(iii) (especially had in the priority date of present patent application according to EN29073-3 (corresponding to ISO9073-3) The latest edition of effect) MD net than toughness range be 0.1-3.0Nm²/ g, preferably 0.4-2.3Nm²/ g,

(iv) according to EN29073-3 (correspond to ISO9073-3) (especially in the priority date of present patent application it is effective Latest edition) net average elongation be 0.5-100%, preferably 4-50%.

(v) the MD/CD toughness ratio of web is 1-12,

(vi) according to the water-retaining property of the net of DIN 53814 (especially in the priority date of present patent application it is effective Latest edition) be 1-250%, preferably 30-150%,

(vii) according to the moisture holding capacity of the net of DIN 53923 (especially in the priority date of present patent application it is effective Latest edition) be 90-2000%, preferably 400-1100%,

(viii) the standard EN 17294-2 for standard EN 15587-2 and the ICP-MS analysis decomposed according to substrate, metal are residual Staying horizontal is that copper content is less than 5ppm, and nickel content is less than 2ppm.

Most preferably, lyocell solution injection net has all above-mentioned performances (i)-(viii).

As described above, the method for production cellulose fibre supatex fabric 102 preferably includes:

(a) solution of the cellulose comprising being dissolved in NMMO is squeezed out by the aperture 126 of at least one injector 122 (referring to appended drawing reference 104), so that the long filament of lyocell spinning solution 104 is formed,

(b) long filament of the lyocell spinning solution 104 is stretched through air-flow (referring to appended drawing reference 146),

(c) contact the long filament with the barber (referring to appended drawing reference 106) for preferably comprising water, thus at least partly Fiber 108 described in precipitating.Therefore, before forming net or cellulose fibre supatex fabric 102, at least partly precipitating long filament Or fiber 108,

(d) collection and long filament or fiber 108 described in precipitating, to form net or cellulose fibre supatex fabric 102,

(e) solvent is removed in washing production line (referring to washing unit 180),

(f) it is pierced etc. by Hydroentangled, needle optionally in combination with (referring to unit 134 is further processed),

(g) dry and winding is collected.

The component part of cellulose fibre supatex fabric 102 can pass through fusion, mixing, hydrogen bonding, physical bond (example As Hydroentangled or needle pierces) and/or be chemically combined to combine.

In order to be further processed, cellulose fibre supatex fabric 102 can it is identical as one or more layers and/or its His combination of materials, such as the layer (not shown) of following material: synthetic polymer, cellulose fluff pulp, cellulose or synthesized polymer Nonwoven web, bicomponent fibre, the net (such as air lay or wet-laying paper pulp) of cellulose pulp, high tenacity of fibres The net or fabric of fiber, high-performance fiber (such as temperature-resistant material or fire proofing), assign final products to change at hydrophobic material The layer (such as polypropylene or polyester layer) of mechanical performance, biodegradable material (such as film, fiber from polylactic acid Or web) and/or high discrete material.

It can be with several differentiable layers of conjugate fiber cellulose fiber supatex fabric 102, see, for example, Fig. 7.

Cellulose fibre supatex fabric 102 can be substantially only made of cellulose.Alternatively, cellulose fibre nonwoven Object 102 may include the mixture of cellulose and other one or more fibrous materials.In addition, cellulose fibre supatex fabric 102 may include bi-component fiber material.Fibrous material in cellulose fibre supatex fabric 102 can at least partly include Modified material.Modified material can be selected from, such as fluoropolymer resin, inorganic resin, inorganic pigment, antimicrobial product, nano particle, wash Agent, flame retardant products, improve the additive (such as super-absorbert resin) of absorbability, ion-exchange resin, carbon compound (such as Active carbon, graphite, conductive carbon), X-ray contrast material, luminous pigment and dyestuff.

In short, the cellulose nonwoven net or cellulose fibre nonwoven that are directly manufactured by lyocell spinning solution 104 Object 102 makes it possible to obtain can not obtainable value-added net performance by staple fiber route.This includes that can form uniform lightweight Net, to manufacture the continuous filaments or fiber 108 that microfibre product and can manufacturing to form web.Moreover, with by staple fiber system The net made is compared, it is no longer necessary to several manufacturing processes.It is knitted in addition, the cellulose fibre of exemplary implementation scheme is non-according to the present invention Making fabric 102 is biodegradable and is made of the raw material of sustainable acquisition (i.e. wood pulp 110 etc.).In addition, it is in purity There is advantage with absorbability aspect.In addition to this, it also has adjustable mechanical strength, rigidity and pliability.In addition, according to The cellulose fibre supatex fabric 102 of illustrative embodiments of the invention can be with low every area weight (such as 10-30g/ m²) manufacture.Very thin long filament of the diameter no more than 5 μm, particularly no more than 3 μm can be manufactured using the technology.In addition, root It can be widely to net aesthetics and for example with flat according to the cellulose fibre supatex fabric 102 of illustrative embodiments of the invention Film-form mode, paper-like mode or softness flexible fabric shape mode formed.By adjusting the technological parameter of the method, also The rigidity and mechanical hardness or flexibility and flexibility of cellulose fibre supatex fabric 102 can accurately be adjusted.This can be with For example, by adjusting the quantity for merging position, the quantity of layer or by post-processing (such as needle thorn, Hydroentangled and/or calendering) To adjust.Particularly, can manufacture has down to 10g/m²The cellulose fibre supatex fabric of relatively low base weight below 102, long filament or fiber 108 etc. with very small diameter (such as down to 3-5 μm or less) can be obtained.

Fig. 2, Fig. 3 and Fig. 4 show the cellulose fibre supatex fabric 102 of exemplary implementation scheme according to the present invention Experiment capture image, wherein realizing the fusion between single fiber 108 by corresponding technology controlling and process.Ellipse of the Fig. 2 into Fig. 4 Shape label shows such integration region, and wherein plurality of fibers 108 connects integrally to each other.At such merging point, two Or plurality of fibers 108 can be interconnected to form overall structure.

Fig. 5 and Fig. 6 shows the experiment of the cellulose fibre supatex fabric 102 of exemplary implementation scheme according to the present invention Image is captured, wherein the swelling of fiber 108 is completed, wherein Fig. 5 shows the fabric 102 in dry non-swelling state, Fig. 6 shows the fabric 102 in wet solvent swelling state.The aperture under the two states of Fig. 5 and Fig. 6 can be measured, and And it can be compared to each other.When calculate 30 measurement results average value when, can determine by aqueous medium fiber 108 it is molten Swollen, aperture is reduced by as much as the 47% of its initial diameter.

Fig. 7 shows the experiment capture of the cellulose fibre supatex fabric 102 of exemplary implementation scheme according to the present invention Image, wherein by corresponding technological design, i.e., the arranged in series of multiple spinning heads completes two overlapped layers of fiber 108 200,202 formation.Two individual but connection layers 200,202 are indicated by the horizontal line in Fig. 7.For example, n-layer fabric 102 (n >=2) can be by manufacturing along n spinning head of machine direction arranged in series or injector 122.

Specific exemplary embodiment of the invention is described in more detail below:

Fig. 8 shows the experiment capture of the cellulose fibre supatex fabric 102 of exemplary implementation scheme according to the present invention Image.In the embodiment illustrated, fusion coefficients have been adjusted to almost absolutely (more accurate by technology controlling and process Ground: about 98%).Due to high fusion coefficients, fabric 102 shown in Fig. 8 is that have consistency similar with film (consistency) substantially continuous sheet material.Such fabric 102 has the behavior of similar planar film.It can be with from Fig. 8 Find out, adjustable technological parameter is to adjust fusion, so that triggering can obtain the amount of substantially continuous membranous fabric 102 Merge the formation of position 204.

The picture left above of Fig. 8 shows that fabric, first scale bar are shown in left illustration by the first scale bar, it is shown that one The item that indicating length is 500 μm.The bottom-right graph of Fig. 8 shows fabric by the second scale bar for being significantly greater than the first scale bar.It inserts on the right side Corresponding item in figure indicates that length is 20 μm.

Fig. 9 shows the experiment of the cellulose fibre supatex fabric 102 of another exemplary embodiment according to the present invention Capture image.In the embodiment illustrated, by technology controlling and process by fusion coefficients be adjusted to it is almost nil (more accurately: low In 2%).This fabric 102 has the behavior similar to soft flexible fabric.Since fusion coefficients are very small, shown in Fig. 9 Fabric 102 be fiber 108 network, fiber 108 only passes through seldom 204 Weak link of fusion position.However, being knitted largely On object 100, the only combination rubbing against one another and wrapped around one another of fiber 108, rather than combined by merging.The result is that relatively flexible Fabric 102 keeps together still through the suitable locality of hydrogen bond between fusion position 204, winding, friction and fiber.

The upper left-hand image of Fig. 9 shows fabric by the first scale bar identical with the scale bar of the upper left-hand image of Fig. 8.Fig. 9's Lower right image presses the second scale bar display fabric greater than the first scale bar.Corresponding item in right illustration indicates that length is 20 μm.

Fabric with fusion coefficients small in this way shows the multiple gaps or gap being arranged between adjacent fiber.It is right In oil absorption capacity, these gaps or gap whether have it is suitably sized may be most important to accommodate oil particles.Anyway, The oil absorption capacity of fabric 102 shown in Fig. 9 should affirm the oil absorption capacity of significantly greater than fabric 102 shown in Fig. 8.

Figure 10 and 11 shows the experiment capture for the cellulose fibre supatex fabric that two kinds show different fusion coefficients Image.The fusion coefficients of fabric 102 of the fusion coefficients of the fabric 102 of Figure 10 less than Figure 11.Therefore, it is considered as when by oil absorption capacity When the function of fusion coefficients, it should be clear that, when needing maximum oil absorption capacity, in minimum fusion coefficients and maximum fusion system Between number, it should have a best fusion coefficients value.

Figure 12 show exemplary implementation scheme according to the present invention for manufacturing cellulose fibre supatex fabric 102 A part of device 100, the cellulose fibre supatex fabric 102 by continuous cellulose fibre 108 two stack layers 200,202 composition.As described above, the difference between device 100 shown in device 100 and Fig. 1 shown in Figure 12 is, root Device 100 according to Figure 12 includes the injector 122 with aperture 126 of two arranged in series and the solidification unit that is respectively configured 128.In the embodiments described herein, two solidification units 128 distribute to each injector 122.In Figure 12, one solidifying Gu unit 128 is located at the path of the lyocell spinning solution 104 extended between injector 122 and fiber support unit 132 Left side, and another solidification unit 128 is located at the corresponding right side in the path.In view of conveyor-type fiber support unit 132 Moveable fiber-receiving surface, 122 generating layer 200 of upstream injector on the left of Figure 12.Layer 202 is produced by downstream injectors 122 Raw (referring to the right side of Figure 12), and be connected on the top major surface for the layer 202 being previously formed, to obtain fabric 102 Two layers 200,202.

According to Figure 12, control unit 140 (control injector 122 and all solidification units 128) is configured for adjusting work Skill parameter, so that the fiber 108 of different layers 200,202 and minimum diameter differ by more than 50% in terms of fibre diameter.Pass through control The fibre diameter of the fiber 108 of 140 regulating course 200,202 of unit processed may include adjusting with lyocell spinning solution 104 mutually The amount of the condensable fluid 106 of effect.In addition, the embodiment of Figure 12 is arranged by connecting along removable fiber support unit 132 Multiple injectors 122 with aperture 126 (optionally with different characteristics) of column adjust the technique for adjusting fibre diameter Parameter.For example, this different characteristic can be different the speed, different of the diameter in aperture 126, different air-flows 146 The pressure of the amount of air-flow 146 and/or different air-flows 146.It, can be in fiber support unit although not being shown in FIG. 12 Collected on 132 and be further processed fiber 108 after fiber 108, for example, by Hydroentangled, needle thorn, dipping, with steam under pressure into Capable steam treatment and calendering is further processed fiber 108.

Referring still to embodiment shown in Figure 12, one or more additional jet stems (bar) or spray can be provided Emitter 122, and can continuously be arranged along the direction of transfer of fiber support unit 132.Multiple injectors 122 can be arranged to The layer 202 of other fiber 108 is deposited on the top for the layer 200 being previously formed, preferably in layer 200 and/or Before the solidification of the fiber 108 of layer 202 or solidification process are fully finished, this can trigger fusion.Join when suitably adjusting technique When number, this can have advantageous effects in the aspect of performance of multilayer fabric 102.

It is not intended to the constraint by specific theory, it is now recognized that the second layer 202 is considered the enhancing of first layer 200, To increase total uniformity of gained multilayer fabric 102.This increase of mechanical stability can be to be become by fibre diameter Changing (longitudinal diameter change in the fiber of diameter change and/or single fiber 108 especially between fiber) further improves.Work as application Deeper when (especially dotted) pressure (such as being provided by air or water), the cross-sectional shape of fiber 108 can further by Intentional distortion, this can advantageously cause further increasing for mechanical stability.

On the other hand, the expected fusion between the fiber 108 according to the fabric 102 of Figure 12 can be triggered, further to mention The mechanical stability of high fabric 102.In this case, fusion can be the support contact point of the long filament of the contact of fiber 108 Adherency, especially before the process of setting for one or two fiber 108 for completing merging.For example, increase can be passed through Fluid flows the contact pressure of (such as flowing of air or water) to promote to merge.It, on the one hand can be with by taking this measure Increase the set strength between one layer of the long filament or fiber 108 in layer 200,202 and/or on the other hand increases layer 200,202 Between set strength.

According to the device 100 of Figure 12, it is configured for manufacture multilayer fabric 102, performs a large amount of technological parameter, These parameters can be used for designing fiber 108 and fibrous layer 200,202 shape and/or diameter or diameter distribution.This is multiple 122 arranged in series of injector as a result, each injector 122 can use the technological parameter that can individually adjust to operate.

Utilize the device 100 according to Figure 12, it is particularly possible to which manufacture is by least two layer 200,202 (preferably more than two layers) groups At fabric 102.The fiber 108 of different layers 200,202 can have different diameter values, and can be in a continuous process Middle formation.By taking this measure, it can be ensured that the efficient production of cellulose fibre supatex fabric 102, this especially allows The multilayer fabric 102 of acquisition is transferred to destination in a kind of transport procedure to be further processed.

By the layer separation of the multilayer fabric 102 of restriction, multilayer fabric 102 can also be separated into later different independent Layer 200,202 is divided into different multi-layer portions.In accordance with an exemplary embodiment of the invention, one layer 200,202 fiber 108 Layer in fiber 108 between bonding and adjacent layer 200,202 ply adhesion (such as by merging and/or passing through friction Generate contact) it can suitably and individually adjust.Particularly, when adjusting technological parameter makes the fiber 108 when a layer 200 It, can be with when the solidification of the fiber 108 of another layer 202 described in when being placed on the top of another layer 202 or solidification have been completed Obtain the corresponding independent control for each layer 200,202.

Figure 13 shows the cellulose fibre supatex fabric 102 including three network layers.First (lower layer) network of fibers Layer is indicated by appended drawing reference 200.Second (centre) fiber network layer at 200 top of the first fiber network layer is formed in by attached drawing mark Note 202 indicates.Another (upper layer) fiber network layer at the top of the second fiber network layer 202 is formed in by appended drawing reference 202' It indicates.As described above, fabric 102 may include the fiber network layer of more than three stackings.

From Figure 13 can with it is further seen that, three fiber network layers 200,202,202' have different thickness.First is fine Tieing up network layer 200 has first thickness t1.Second fiber network layer 202 has second thickness t2.Another fiber network layer 202' has third thickness t3.

It should be noted that term " includes " is not excluded for other elements or step, and article " one (a) " or " one (an) " It is multiple using being not excluded for.Furthermore, it is possible to combine the element of description associated with different embodiments.It shall also be noted that right is wanted Appended drawing reference in asking is not necessarily to be construed as limitation the scope of the claims.

Reference signs list:

The manufacturing device of 100 cellulose fibre supatex fabric

102 cellulose fibre supatex fabric/reticulated

104 lyocell spinning solutions

106 condensable fluids

108 fibers

110 wood pulps

112 water containers

113 metering units

114 storage tanks

116 solvent containers

118 washing units

119 mixed cells

120 dissolution units

122 injectors

124 fibers form unit

126 apertures

128 solidification units

132 (conveyor type) fiber support units

134 are further processed unit

136 coilers

140 control units

146 air-flows

200 fused layers/first network layer

202 fused layers/the second network layer

202' fused layer/another network layer

204 fusion positions

T1, t2, t3 thickness degree

In the following, it is described that the example of the variation for generating fusion coefficients and as shown in following table.Cellulose fiber Mist flow can be solidified by changing by tieing up the different fusion coefficients in fabric, while (be had using constant spinning solution The spinning solution of constant consistency, especially lyocell spinning solution) and constant gas flow (such as air mass flow) is in fact It is existing.Thus, it is possible to observe the relationship between solidification mist flow and fusion coefficients, i.e., (solidification is spraying for the trend of fusion behavior Flow is higher, and fusion coefficients are lower).MD indicates machine direction herein, and CD is indicated laterally.

Flexibility (is described, on the basis of non-woven standard WSP90.3 by known Specific Hand measuring technique Measured with so-called " Handle-O-Meter ", especially the effective latest edition in present patent application priority) it can abide by Follow above-mentioned convergence.Toughness (being described with Fmax) is (such as according to EN29073-3 (corresponding to ISO9073-3), especially at this The effective latest edition of the priority date of patent application) convergence can also be followed.It therefore, can be according to fusion journey Spend pliability and toughness that (being specified by fusion coefficients) adjusts gained cellulose fibre supatex fabric.