阅读说明：本技术 一种脱氧剂包装材料的制备方法 (A kind of preparation method of deoxidant packing material ) 是由 毛兵 李文峰 于 2019-09-04 设计创作，主要内容包括：本发明公开了一种脱氧剂包装材料的制备方法,所述脱氧剂包装材料包括依次设置的PET膜层、第一胶黏剂层、热轧透明PP无纺布层、第二胶黏剂层和CPP膜层,其制备方法包括下列步骤：S1、制备PET膜层；S2、制备热轧透明PP无纺布层；S3、制备CPP膜层；S4、制备脱氧剂包装材料。本发明的脱氧剂包装材料的制备方法制得的脱氧剂包装材料结构简单,使用方便,既具有良好的透明性,特别适用于包含指示标识的脱氧剂包装；又具有良好的防漏粉(脱氧剂粉末)和透气性,且具有较高的强度,不易损坏。(The invention discloses a kind of preparation methods of deoxidant packing material, the deoxidant packing material includes the PET film layer set gradually, the first adhesive layer, hot rolling transparent PP nonwoven layer, the second adhesive layer and CPP film layer, and preparation method includes the following steps: S1, prepares PET film layer；S2, preparation hot rolling transparent PP nonwoven layer；S3, preparation CPP film layer；S4, deoxidant packing material is prepared.Deoxidant packing material structure made from the preparation method of deoxidant packing material of the invention is simple, easy to use, both has the good transparency, especially suitable for the deoxidant packing comprising sign；There is good Anti-powder-leakage (deoxidizing powder) and gas permeability, and intensity with higher again, be hardly damaged.)

1. a kind of preparation method of deoxidant packing material, which is characterized in that the deoxidant packing material includes setting gradually PET film layer (1), the first adhesive layer (4), hot rolling transparent PP nonwoven layer (2), the second adhesive layer (5) and CPP film layer (3), preparation method includes the following steps:

S1, PET film layer (1) is prepared

Select PET film as PET film layer (1), the PET film layer (1) with a thickness of 10~14um；Using punch device described The through-hole (11) of multiple array distributions is got on PET film, and the aperture for controlling the through-hole (11) is 0.38~0.51mm, appoint The pitch-row anticipated between two adjacent through-holes (11) is 1.1~3mm, obtains the PET film layer (1)；

S2, preparation hot rolling transparent PP nonwoven layer (2)

S21, PP pellet feeding single screw extrusion machine is melt into melt；

S22, melt enter spinning machine, after melt distributes, spray from spinneret, form PP spun-bonded non-woven fabrics；

S23, PP spun-bonded non-woven fabrics are sent into hot-pressing roller progress hot rolling, obtain the hot rolling transparent PP nonwoven layer (2)；Step In S23, the roller spacing of the hot-pressing roller is 15~20um, and temperature is 155~175 DEG C, and pressure is 3.5~4.5MPa, and roller speed is 30~40m/min；

S3, preparation CPP film layer (3)

Select CPP film as CPP film layer (3), the CPP film layer (3) with a thickness of 20~25um of thickness；Existed using punch device The CPP film gets the through-hole (11) of multiple array distributions, and the aperture for controlling the through-hole (11) is 0.38~0.51mm, Pitch-row between the adjacent through-hole of any two (11) is 1.1~3mm, obtains the CPP film layer (3)；

S4, deoxidant packing material is prepared

S41, adhesive is coated between the PET film layer (1) and hot rolling transparent PP nonwoven layer (2), form the first adhesive The PET film layer (1) and hot rolling transparent PP nonwoven layer (2), are combined with each other by layer (4) with dry compound machine；

S42, adhesive, the second adhesive layer are coated between the hot rolling transparent PP nonwoven layer (2) and CPP film layer (3) (5), the hot rolling transparent PP nonwoven layer (2) and CPP film layer (3) are combined with each other with dry compound machine；

S43, it is then cured, obtains the deoxidant packing material；

Wherein, point of the step S41 and step S42 without sequencing；Step S1, point of the step S2 and step S3 without sequencing.

2. the preparation method of deoxidant packing material according to claim 1, which is characterized in that in step S21, the list The heated zones of screw extruder are 5 sections, and heating temperature is followed successively by 170~175 DEG C, 176~178 DEG C, 178~183 DEG C, 183 ~187 DEG C, 187~195 DEG C.

3. the preparation method of deoxidant packing material according to claim 1, which is characterized in that in step S42, it is described into Row curing be specially temperature be 55~60 DEG C under the conditions of continuous ripening for 24 hours.

4. the preparation method of deoxidant packing material according to claim 1, which is characterized in that the PET film layer (1) With a thickness of 12um.

5. the preparation method of deoxidant packing material according to claim 1, which is characterized in that on the PET film layer (1) The through-hole (11) of multiple array distributions is offered, and the aperture of the through-hole (11) is 0.45mm, any two are adjacent to lead to Pitch-row between hole (11) is 1.5mm.

6. the preparation method of deoxidant packing material according to claim 1, which is characterized in that the hot rolling transparent PP without Woven fabric layer (2) with a thickness of 18um.

7. the preparation method of deoxidant packing material according to claim 1, which is characterized in that the CPP film layer (3) With a thickness of thickness 22um.

8. the preparation method of deoxidant packing material according to claim 1, which is characterized in that on the CPP film layer (3) The through-hole (11) of multiple array distributions is offered, and the aperture of the through-hole (11) is 0.45mm, any two are adjacent to lead to Pitch-row between hole (11) is 1.5mm.

9. a kind of deoxidant packing material, which is characterized in that using the deoxidier packet as described in claim 1 to 6 any one The preparation method of package material is made.

Technical field

The present invention relates to field of packaging material, and in particular to a kind of preparation method of deoxidant packing material.

Background technique

Deoxidier also known as deoxidant, oxygen absorbent are absorbable oxygen, the additive for slowing down Food Oxidation effect, are current The new product used in food preservation.It is one group of chemical mixture easily to react with free oxygen or dissolved oxygen, it In the sealing paper bag for having certain air permeability and intensity, as desiccant bag, sealed together in food bag with food Packaging, can remove in bag and remain aerial oxygen, prevent food because of oxidation stain, rotten and spoiled by rancid oil or fat, also to mould, good The growth of oxygen bacterium and foodstuff pest has inhibiting effect.

Deoxidier is not only used to keep food quality at present, and is also used for cereal, feed, drug, dress material, fur, essence Preservation, the antirust etc. of the classes article such as close instrument.But the deoxidation preservation effect in existing food bag is invisible, when being deposited in food bag It also can not intuitively be observed in oxygen, frequently can lead to people and eat rotten food by mistake.

Such as, a Publication No. CN207001250U, a kind of entitled " one-piece type deoxidation of instruction disclosed in 2018.02.13 The patent of agent packaging material ", which disclose indicate one-piece type deoxidant packing material, including wrapping paper ontology, wrapping paper Ontology includes inner membrance, pet layer and outer membrane, and inner membrance is compounded on the bottom surface of pet layer by adhesive glue, and outer membrane is compound by adhesive glue On the top surface of pet layer, outer membrane has the instruction pattern for detecting and indicating oxygen content.It is arranged outside deoxidant packing material Instruction pattern on film is able to detect the oxygen content in the food bag equipped with deoxidier and is shown by color, is convenient for user Identification, improves edible safety.

Deoxidant packing material used at present, there is problems:

1. or permeability is not good enough or increases gas permeability by way of directly punching, and causes to be easy powder leakage, peace Full property is poor；

2. lacking one kind not only has fine air permeability, but also with high transparency, dust-proof, Anti-powder-leakage deoxidant packing material Material.

Based on the above situation, the invention proposes a kind of preparation method of deoxidant packing material, can effectively solve more than Problem.

Summary of the invention

The purpose of the present invention is to provide a kind of preparation methods of deoxidant packing material.Deoxidant packing material of the invention Deoxidant packing material structure made from the preparation method of material is simple, easy to use, both has the good transparency, particularly suitable In the deoxidant packing comprising sign；There is good Anti-powder-leakage (deoxidizing powder) and gas permeability again, and have higher Intensity, be hardly damaged.

In order to solve the above technical problems, present invention provide the technical scheme that

A kind of preparation method of deoxidant packing material, the deoxidant packing material include the PET film layer set gradually, First adhesive layer, hot rolling transparent PP nonwoven layer, the second adhesive layer and CPP film layer, preparation method include the following steps:

S1, PET film layer is prepared

Select PET film as PET film layer, the PET film layer with a thickness of 10~14um；Using punch device described The through-hole of multiple array distributions is got on PET film, and the aperture for controlling the through-hole is 0.38~0.51mm, any two phase Pitch-row between adjacent through-hole is 1.1~3mm, obtains the PET film layer；

S2, preparation hot rolling transparent PP nonwoven layer

S21, PET pellet feeding single screw extrusion machine is melt into melt；

S22, melt enter spinning machine, after melt distributes, spray from spinneret, form PP spun-bonded non-woven fabrics；

S23, PP spun-bonded non-woven fabrics are sent into hot-pressing roller progress hot rolling, obtain the hot rolling transparent PP nonwoven layer；Step In S23, the roller spacing of the hot-pressing roller is 15~20um, and temperature is 155~175 DEG C, and pressure is 3.5~4.5MPa, and roller speed is 30~40m/min；

When PP spun-bonded non-woven fabrics are sent into hot-pressing roller progress hot rolling, by the pressure and temperature range, using low melting point PET The fiber of mode, the plain weave non-woven fabrics formed after lapping hot rolling have good gas permeability and the transparency, and cutter is standby certain The function of preventing packaging powder leakage, establish good function type basis for specific function Intelligent oxygen indicator type packaging material below.

S3, preparation CPP film layer

Select CPP film as CPP film layer, the CPP film layer with a thickness of 20~25um of thickness；Using punch device in institute The through-hole that CPP film gets multiple array distributions is stated, and the aperture for controlling the through-hole is 0.38~0.51mm, any two phase Pitch-row between adjacent through-hole is 1.1~3mm, obtains the CPP film layer；

S4, deoxidant packing material is prepared

S41, adhesive is coated between the PET film layer and hot rolling transparent PP nonwoven layer, form the first adhesive layer, The PET film layer and hot rolling transparent PP nonwoven layer are combined with each other with dry compound machine；

S42, adhesive is coated between the hot rolling transparent PP nonwoven layer and CPP film layer, the second adhesive layer, with dry The hot rolling transparent PP nonwoven layer and CPP film layer are combined with each other by formula compounding machine；

S43, it is then cured, obtains the deoxidant packing material；

Wherein, point of the step S41 and step S42 without sequencing；Step S1, step S2 and step S3 without sequencing it Point.

In the present invention, between the PET film layer and hot rolling transparent PP nonwoven layer, hot rolling transparent PP nonwoven layer and CPP It is compound by the first adhesive layer and the second adhesive layer bonding between film layer, form the deoxidant packing material；PET film Layer, the first adhesive layer, the second adhesive layer and CPP film layer sheet be it is transparent, the present invention by setting hot rolling transparent PP nonwoven Layer of cloth had both guaranteed the good transparency, was provided with good Anti-powder-leakage (deoxidizing powder) and gas permeability.

The PET film layer with a thickness of 10~14um；PET film layer is transparent, provides good anti-dust performance, with a thickness of 10~ 14um had not only guaranteed good intensity requirement in this way, but also reduced thickness and save raw material；Multiple arrays point are offered on the PET film layer The through-hole of cloth, and the aperture of the through-hole is 0.38~0.51mm, the pitch-row between the adjacent through-hole of any two is 1.1~ 3mm；Entire deoxidant packing material can be achieved so uniformly to breathe freely, and the aperture of through-hole is that 0.38~0.51mm both ensure that Good permeability requirement, aperture is too small, and permeability is poor, and aperture can be prevented excessive, leads to powder leakage (deoxidizing powder), And in gluing (the first adhesive layer) recombination process, adhesive immerses in through-hole, and blocking via hole causes permeability to be deteriorated.

The hot rolling transparent PP nonwoven layer is the PP spun-bonded non-woven fabrics through hot pressing roll pressing；The hot rolling transparent PP nonwoven Layer of cloth with a thickness of 15~20um；The light transmittance of the hot rolling transparent PP nonwoven layer is greater than 80%；

The hot rolling transparent PP nonwoven layer of the above structure is arranged, and had both guaranteed the good transparency, and had been provided with good leakproof Powder (deoxidizing powder) and gas permeability, and intensity with higher, are hardly damaged；PP spun-bonded non-woven fabrics were originally opaque, through heat The PP spun-bonded non-woven fabrics of pressure roller compacting become transparent；Preparation method can refer to existing PET spinning technique and hot rolling technology.

The CPP film layer with a thickness of 20~25um of thickness；CPP film layer is transparent, provides good hot composite performance, such as exists After being packed into deoxidizing powder, the CPP film layer for packing edge is set to be combined together (doubling deoxidant packing material by the way that hot pressing is compound Material, CPP film layer are bonded to each other, and hot pressing is compound to be combined together the CPP film layer for packing edge)；20~25um of thickness was so both Guarantee good intensity requirement, and reduces thickness and save raw material；The through-hole of multiple array distributions is offered in the CPP film layer, And the aperture of the through-hole is 0.38~0.51mm, the pitch-row between the adjacent through-hole of any two is 1.1~3mm.In this way Entire deoxidant packing material can be achieved uniformly to breathe freely, and the aperture of through-hole be 0.38~0.51mm both ensure that it is good Gas performance requirement, aperture is too small, and permeability is poor, and aperture can be prevented excessive, leads to powder leakage (deoxidizing powder) and gluing In (the first adhesive layer) recombination process, adhesive immerses in through-hole, and blocking via hole causes permeability to be deteriorated.

Deoxidant packing material structure of the invention is simple, easy to use, both has the good transparency, especially suitable for Deoxidant packing comprising sign；There is good Anti-powder-leakage (deoxidizing powder) and gas permeability again, and with higher Intensity is hardly damaged.

Preferably, in step S21, the heated zones of the single screw extrusion machine are 5 sections, heating temperature is followed successively by 170~ 175 DEG C, 176~178 DEG C, 178~183 DEG C, 183~187 DEG C, 187~195 DEG C.

The temperature of the heated zones of single screw extrusion machine described above controls so that PET particle enters single screw extrusion machine Afterwards, runner temperature is gradually warmed up, and forms the transparence liquid PET substance of free-flowing, convenient to be freely accessible to PET spray under stress Filament plate forms transparence PET fiber silk.

Preferably, in step S42, it is described cured specially temperature be 55~60 DEG C under the conditions of continuous ripening for 24 hours.

Preferably, the PET film layer with a thickness of 12um.

Preferably, the through-hole of multiple array distributions is offered on the PET film layer, and the aperture of the through-hole is 0.45mm, the pitch-row between the adjacent through-hole of any two are 1.5mm.

Preferably, the hot rolling transparent PP nonwoven layer with a thickness of 18um.

Preferably, the CPP film layer with a thickness of thickness 22um.

Preferably, the through-hole of multiple array distributions is offered in the CPP film layer, and the aperture of the through-hole is 0.45mm, the pitch-row between the adjacent through-hole of any two are 1.5mm.

The present invention also provides a kind of deoxidant packing materials, using the preparation method of foregoing deoxidant packing material It is made.

Compared with prior art, the present invention have the following advantages that and the utility model has the advantages that

Deoxidant packing material structure made from the preparation method of deoxidant packing material of the invention is simple, user Just, both there is the good transparency, especially suitable for the deoxidant packing comprising sign；There is good Anti-powder-leakage again (deoxidizing powder) and gas permeability, and intensity with higher, are hardly damaged.

Deoxidant packing material made from the preparation method of deoxidant packing material of the invention, has good gas permeability Can, surface pet layer, CPP layer offer fine and close fine through holes, intermediate plain weave PP nonwoven layer (hot rolling transparent PP non-woven fabrics Layer) there is good gas permeability；

The hot rolling transparent PP nonwoven layer of middle layer densification forms good Anti-powder-leakage performance.

Detailed description of the invention

Fig. 1 is the structural diagram of the present invention；

Fig. 2 is the cross section structure schematic diagram of A-A in Fig. 1 of the present invention.

Specific embodiment

It is right combined with specific embodiments below in order to make those skilled in the art more fully understand technical solution of the present invention The preferred embodiments of the invention are described, but should not be understood as the limitation to this patent.

Test method described in following embodiments or test method are unless otherwise specified conventional method；The reagent And material is obtained from routine business approach, or prepare in conventional manner unless otherwise specified.

Heretofore described " pitch-row " refers to the distance at two holes center；" aperture " refers to the diameter of round hole；Film, that is, thin Film, the expression of a thin only relative thickness；CPP film (CPP film) i.e. cast polypropylene film, also referred to as un-stretched polypropylene is thin Film can be divided into general CPP film by purposes difference, aluminize grade CPP film and boiling grade CPP film etc..