阅读说明：本技术 具有不同孔组的纤维素纤维非织造织物 (cellulosic fiber nonwoven fabric with different aperture groups ) 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：纤维素纤维非织造织物(102),尤其是由莱赛尔纺丝溶液(104)直接制造的纤维素纤维非织造织物,其中所述织物(102)包括基本上连续纤维(108)的网络,并且其中所述织物(102)进一步包括多个第一孔或一级孔(260),所述多个第一孔或一级孔(260)在第一复数根纤维(108)之间界定并具有在第一尺寸范围内的尺寸(280),以及多个第二孔或二级孔(264),所述多个第二孔或二级孔(264)在第二复数根纤维(108)之间界定并具有在第二尺寸范围内的尺寸(282),其中第一尺寸范围包含的尺寸(280)小于第二尺寸范围所包含的尺寸(282)。(a cellulosic fiber nonwoven fabric (102), in particular a cellulosic fiber nonwoven fabric directly manufactured from a lyocell spinning solution (104), wherein the fabric (102) comprises a network of substantially continuous fibers (108), and wherein the fabric (102) further comprises a plurality of first or primary apertures (260), the plurality of first or primary apertures (260) being defined between a first plurality of fibers (108) and having a size (280) within a first size range, and a plurality of second or secondary apertures (264), the plurality of second or secondary apertures (264) being defined between a second plurality of fibers (108) and having a size (282) within a second size range, wherein the first size range comprises a size (280) that is smaller than the size (282) comprised by the second size range.)

1. A cellulose fibre nonwoven fabric (102), in particular a cellulose fibre nonwoven fabric directly manufactured from a lyocell spinning solution (104), wherein the fabric (102) comprises a network of substantially continuous fibres (108), and wherein the fabric (102) further comprises:

A plurality of first apertures (260) defined between the first plurality of fibers (108) and having a size (280) within a first size range;

A plurality of second apertures (264) defined between the second plurality of fibers (108) and having a size (282) within a second size range;

Wherein the first size range includes a size (280) that is less than a size (282) included in the second size range, and

Wherein at least 80 mass% of the fibers (108) have an average fiber diameter in the range of 1 μm to 40 μm.

2. The fabric (102) of claim 1, comprising at least one of the following features:

Wherein at least some of the fibers (108) form part of the first plurality of fibers (108) and the second plurality of fibers (108);

Wherein at least some of the fibers (108) form only a portion of the first plurality of fibers (108) or only a portion of the second plurality of fibers (108);

wherein the plurality of second apertures (264) are adapted to retain and/or release second particles (266);

Wherein the first size range and the second size range do not have a common size (280, 282);

wherein the fiber (108) is configured such that a respective size range of at least one of the plurality of first apertures (260) and the plurality of second apertures (264) is changed by at least one of swelling and shrinking of the fiber (108) depending on a moisture state of the fiber (108).

3. The fabric (102) according to claim 1 or 2, wherein the plurality of first apertures (260) are adapted to retain and/or release first particles (262), wherein the fabric (102) is configured such that the first particles (262) can selectively enter or exit the first apertures (260), and wherein the fabric (102) comprises at least one of the following features:

wherein the first size range of the first pores (260) is configured such that first particles (262) having a diameter in the range between 0.5-500 μm, in particular between 3-300 μm, can enter or leave the first pores (260) in the dry state of the fibers (108);

wherein the first size range of the first pores (260) is configured such that first particles (262) having a diameter in the range between 0.5 μm-500 μm, in particular between 3 μm-300 μm, cannot enter or leave the first pores (260) in the wet state of the fibers (108).

4. The fabric (102) according to any one of claims 1-3, comprising at least one of the following features:

The first plurality of apertures (260) being disposed throughout the web (102), the second plurality of apertures (264) being disposed only on a sub-portion of the web (102);

Comprises a medium (262, 266, 272, 276), in particular a medium (262, 266, 272, 276) comprising at least 1 mass% relative to the mass of the entire textile (102), which medium fills at least one of the plurality of first apertures (260) and the plurality of second apertures (264);

comprises an active agent (272) contained in the plurality of second apertures (264);

Wherein the amount of fiber ends per volume of the continuous fibers (108) is less than 10,000 ends/cm³Especially less than 5,000 ends/cm³；

Wherein the fiber diameters of the fibers (108) are different such that the ratio of the average diameter of the 10% finest fibers (108) to the average diameter of the 10% coarsest fibers (108) is greater than 0.01, in particular greater than 0.05, more in particular greater than 0.1;

wherein at least 80 mass% of the fibers (108) have an average fiber diameter in the range between 3 μm and 15 μm;

Wherein the fibers (108) have a copper content of less than 5ppm and/or a nickel content of less than 2 ppm;

Wherein the fabric (102) is configured such that the wicking speed is at least 0.25g water/g fabric/sec;

Wherein the fabric (102) is configured such that the diameter of the cavity (274) defined between at least part of the apertures (260, 264) is reduced by at least 20%, in particular by at least 30%, when the fabric (102) is brought from a substantially dry conditioning state with a moisture content of 5-15% to a wet state with a moisture content of at least more than 20%;

wherein at least some of the fibers (108) are fused together at a fusion location (204);

Wherein the web (102) comprises a first web portion (268) having the plurality of first apertures (260) and comprises a second web portion (270) different from the first web portion (268) and having the plurality of second apertures (264).

5. a method of making a cellulosic fiber nonwoven fabric (102) directly from a lyocell spinning solution (104), wherein the method comprises:

Extruding the lyocell spinning solution (104) into an atmosphere of a coagulating fluid (106) through at least one jet (122) having an orifice (126) with the aid of a gas stream (146) to form substantially continuous fibers (108);

Collecting the fibers (108) on a fiber support unit (132) to form the fabric (102);

Adjusting the process parameters to form the web (102) having:

a plurality of first apertures (260) defined between the first plurality of fibers (108) and having a size (280) within a first size range;

A plurality of second apertures (264) defined between the second plurality of fibers (108) and having a size (282) within a second size range;

Wherein the first size range includes a size (280) that is less than a size (282) included in the second size range, and

Wherein at least 80 mass% of the fibers (108) have an average fiber diameter in the range of 1 μm to 40 μm.

6. The method of claim 5, wherein the method further comprises at least one of:

adding moisture to at least a portion of the fabric (102) to reduce at least one of the size ranges by moisture-based swelling of at least a portion of the fibers (108);

removing moisture from at least a portion of the fabric (102) to thereby increase at least one of the dimensional ranges by moisture-based shrinkage of at least a portion of the fibers (108);

Adjusting a moisture state of the fiber (108) to change a respective size range of at least one of the first plurality of apertures (260) and the second plurality of apertures (264);

after collecting the fibers (108) on the fiber support unit (132), the plurality of second apertures (264) are formed, particularly by hydroentanglement.

7. The method according to claim 5 or 6, comprising at least one of the following features:

Wherein each of the plurality of first apertures (260) and/or cavities (274) in fluid communication with at least a portion of the first apertures (260) is defined between at least three fibers (108) of the fabric (102);

wherein each of the plurality of second apertures (264) and/or cavities (274) in fluid communication with at least a portion of the second apertures (264) is formed by hydroentanglement.

8. The method according to any one of claims 5-7, wherein the method further comprises treating the fibers (108) and/or the fabric (102) in situ after collection on a fiber support unit (132), in particular by at least one of hydroentanglement, needling, impregnation, steam treatment with pressurized steam, and calendering.

9. an apparatus (100) for manufacturing a cellulosic fiber nonwoven fabric (102) directly from a lyocell spinning solution (104), wherein the apparatus (100) comprises:

At least one injector (122) having an orifice (126) configured for extruding a lyocell spinning solution (104) with the aid of a gas stream (146);

A coagulation unit (128) configured for providing an atmosphere of a coagulation fluid (106) to the extruded lyocell spinning solution (104) thereby forming substantially continuous fibres (108);

A fiber support unit (132) configured for collecting fibers (108) thereby forming the fabric (102);

A control unit (140) configured for adjusting process parameters such that the fabric (102) is formed with:

A plurality of first apertures (260) defined between the first plurality of fibers (108) and having a size (280) within a first size range;

A plurality of second apertures (264) defined between the second plurality of fibers (108) and having a size (282) within a second size range;

wherein the first size range includes a size (280) that is less than a size (282) included in the second size range, and

wherein at least 80 mass% of the fibers (108) have an average fiber diameter in the range of 1 μm to 40 μm.

10. the device (100) according to claim 9, comprising a further processing unit (134), the further processing unit (134) being adapted to form the plurality of second holes (264) after collecting the fibers (108) on the fiber support unit (132), in particular by hydroentanglement or needling.

11. A method (272, 276) of controlling the release of an active agent, the method comprising:

A cellulosic fiber nonwoven fabric (102) is provided comprising a network of substantially continuous fibers (108), a plurality of pores (260, 264) defined between the fibers (108), and an active agent (272) retained in at least a portion of the pores (260, 264) and/or connected cavities (274) in the fabric (102), wherein at least 80 mass% of the fibers (108) have an average fiber diameter in the range of 1 μ ι η -40 μ ι η;

The condition of the fabric (102) is adjusted to trigger release of the active agent (272) from the apertures (260, 264) and/or the cavity (274).

12. the method of claim 11, wherein the method further comprises at least one of:

Adjusting a state, including adjusting a moisture state of the fiber (108) to trigger one of swelling and shrinking of the fiber (108), to control release of the active agent (272) from the pores (260, 264) and/or cavities (274);

providing a further active agent (276) in at least a portion of the apertures (260, 264) and/or cavities (274), and adjusting the condition of the fabric (102), in particular the moisture condition of the fibers (108), to trigger release of the further active agent (276) from the apertures (260, 264) and/or cavities (274) after release of the active agent (272) from the apertures (260, 264) and/or cavities (274) is complete.

13. A method of using the cellulose fiber nonwoven fabric (102) of any of claims 1-4, the cellulose fiber nonwoven fabric (102) being used for at least one of: wipes, dryer sheets, filters, hygiene products, medical applications, geotextiles, agrotextiles, apparel, construction technology products, automotive products, furniture, industrial products, products related to beauty, leisure, sports, or travel, and products related to schools or offices.

14. A product or composite comprising the fabric (102) according to any one of claims 1-4.