CN203236797U - High-moisture-permeability biodegradable multilayer composite material - Google Patents
High-moisture-permeability biodegradable multilayer composite material Download PDFInfo
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- CN203236797U CN203236797U CN 201320293507 CN201320293507U CN203236797U CN 203236797 U CN203236797 U CN 203236797U CN 201320293507 CN201320293507 CN 201320293507 CN 201320293507 U CN201320293507 U CN 201320293507U CN 203236797 U CN203236797 U CN 203236797U
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- polyvinyl alcohol
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Abstract
The utility model discloses a high-moisture-permeability biodegradable multilayer composite material. The high-moisture-permeability biodegradable multilayer composite material is used for solving the problems of the current glue composite products that the used ordinary glue is impermeable to the air, so that the moisture permeability of shell fabrics is lowered greatly, the wearing comfort is affected, and a certain amount of water-insoluble residues can be formed as the ordinary glue is insoluble in water. The composite material disclosed by the utility model is formed by combining at least one layer of water-soluble biodegradable polyvinyl alcohol film and at least one layer of water-soluble biodegradable polyvinyl alcohol non-woven fabric and is characterized in that the polyvinyl alcohol film and the polyvinyl alcohol non-woven fabric are combined by a water-soluble adhesive, and a plurality of adhesive points are formed between the polyvinyl alcohol film and the polyvinyl alcohol non-woven fabric. The multilayer composite material disclosed by the utility model is more suitable for being applied to protective clothing with requirements for gas and liquid barrier and requirements for biodegradation and water solubility.
Description
Technical field
The utility model relates to the multilayer materials field, and material is knitted in the specifically high thoroughly wet spinning that is composited of the non-weaving cloth lamination of a kind of biodegradable water-soluble polyvinyl alcohol film and same material.
Background technology
The short fiber that polyvinyl alcohol resin is produced after dissolving, solution spinning, super drawing, dryness finalization, chopped cleaning, curling oven dry, sting the non-weaving cloth of making through combing water, have higher hot strength, good permeability, and frivolous especially softness, use comfortable, have completely biodegradable, can make the goods such as multiple disposable protective clothing, work clothes, shoe cover, cap.
Yet, existing non-weaving cloth, there is larger gap between its fiber, so that this material has significant limitation in the use of some occasion, as be widely used in the protective garment in the fields such as medical treatment, fire-fighting, power station, chemical defence, liquid barrier property, the requirement of solid dust barrier need to be arranged, but existing non-weaving cloth just can't satisfy above-mentioned requirements.
In order to solve the barrier difficult problem of non-weaving cloth, people have taked many measures, attempt to improve the barrier of non-woven fabric.As adopt superfine fibre with special process make ultra-fine hole the Tyvek of Du Pont, adopt polypropylene spun-bonded/melt the ultra-fine hole that the spray combination process makes SM, SMS, SMMS compound nonwoven cloth, adopt the PU coating, adopt the PU/TFPE Film laminated, nonwoven refused water treatment, even adopt common PP nonwoven and TPO film to carry out MULTILAYER COMPOSITE etc.In the above solution, not only there is the imperfect defective of fabric poisture-penetrability, and the material of producing is non-degradation material, and this class material is as the raw material of a large amount of disposable products, their recovery is destroyed not only will produce huge expense, and main be when processing, no matter be to burn or landfill, all can cause larger infringement to environment.
Polyvinyl alcohol film (PVA film), not only have than advantages such as the better intensity of general thin, transparency, chemically-resistant article, oil resistivity, impressionability, heat-sealable, antistatic behaviours, but also have special barrier properties for gases, fragrance protectiveness, glossiness.The most outstanding characteristics of polyvinyl alcohol film are that it has water-soluble, biodegradable.Polyvinyl alcohol film has certain degree of crystallinity, and by some special process process, the degree of crystallinity that can regulate film reach film and at normal temperatures water is taken blocking effect, and under higher temperature (such as 90-100 ℃), film has water-soluble.Because the existence of amorphous area, polyvinyl alcohol film also has certain water vapour permeability, its the moisture permeation mechanism microporous that mainly do not place one's entire reliance upon as traditional ventilated membrane, it can also by dissolving and the volatilization of moisture content in film, make moisture be able to conduct by film.These performances of polyvinyl alcohol film are so that it is suitable for producing for the high multilayer materials that thoroughly wets of biodegradable barrier very much.
In traditional MULTILAYER COMPOSITE mode, have heat melt compound, glue is compound, extrude the complex methods such as compound.These complex methods have himself pluses and minuses.Be reflected on the properties of product, heat is melted complex method and is referred to be heated simultaneously with film and nonwoven fabric, the complex method of pressurization fusion; And the heat decomposition temperature of polyvinyl alcohol and melt temperature are too approaching, be difficult to obtain the good joint product of peel strength with the method, even and heat melt recombination energy and reach reluctantly the peel strength certain value, but production efficiency is low, processing cost is very high.The glue joint product can make the fabric water vapour permeability greatly descend because at present used common glue is airtight, the comfortableness of impact dress, and also common glue is not dissolved in water, and it is residual to form a certain amount of water-soluble solution.Extrude compound the compound online of polyolefin film that be suitable for, but adopt polyvinyl alcohol film as composite, aspect melt extrusion technology, technical also very immature at present, with present technology, technological level, also be difficult to accomplish.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the defective that above-mentioned existing polyvinyl alcohol nonwovens and polyvinyl alcohol film glue complex technique exist, and the low cost that a kind of suitable disposable products use, the composite that can be dissolved in water fully with barrier, high water vapour permeability are provided.
For this reason, the technical solution adopted in the utility model is as follows: a kind of Biodegradable multi-layered composite material with high moisture permeability, described composite by the polyvinyl alcohol film of one deck water-soluble biodegradable at least and at least the polyvinyl alcohol nonwovens of one deck water-soluble biodegradable be composited, it is characterized in that, described polyvinyl alcohol film and polyvinyl alcohol nonwovens adopt water soluble adhesive compound, make and form a plurality of glue points between polyvinyl alcohol film and the polyvinyl alcohol nonwovens.For final products can be dissolved in the water fully, used adhesive is water soluble adhesive in the utility model.Form a plurality of glue points between polyvinyl alcohol film and the polyvinyl alcohol nonwovens, rather than a glue-line, can keep the flexible nature of final composite.
As the further of technique scheme improved and replenish, the utility model is taked following technical measures:
Described a plurality of glue point is evenly distributed, and makes polyvinyl alcohol film consistent with adhesion everywhere between the polyvinyl alcohol nonwovens.
Described a plurality of glue point uniformly at intervals on the composite surface of polyvinyl alcohol film, can adopt woodburytype or ROTARY SCREAM PRINTING method to realize technique scheme with point-like, letter or decorative pattern shape.
Distance between the adjacent glue point is preferably 3-20mm, is guaranteeing polyvinyl alcohol film on polyvinyl alcohol nonwovens is combined firm foundations between the two, saving glue consumption; Simultaneously also be to reach the purpose that keeps final composite flexible nature.
Described polyvinyl alcohol film is transparent membrane, frosting film or decorative pattern film, and its thickness is 0.005-0.2mm, is preferably 0.01-0.04mm; The grammes per square metre of described polyvinyl alcohol nonwovens is preferably 55-110g/sqm at 30-130g/sqm.
The beneficial effect that the utlity model has: because the adhesive that adopts is water miscible, finished product after compound can be dissolved in water fully, cooperate water-soluble polyvinyl alcohol film and the water-soluble polyvinyl alcohol nonwovens of high temperature, the multilayer materials of making, be more suitable in gas, liquid barrier demand are arranged, and the application of the protective garment of biodegradation, water-soluble solution demand is arranged.This application mainly is nuclear industry protection aspect, by the protective garment that is polluted by radioactive ash after using being carried out the high-temperature water dissolving, solution is after superfine filters, the filtrate of removing radioactive decontamination dust can be discharged in the soil, biodegradation under natural environment, the filter core that is rich in radioactive contamination dust then carries out innoxious buried processing, can greatly reduce the quantity of the disposable protective clothing that needs innoxious buried processing, reduce nuclear industry to the infringement of environment, reduce operating cost.
Description of drawings
Fig. 1 is the structural representation of the utility model double-layer composite material.
Among the figure: 1 polyvinyl alcohol film layer; 2 polyvinyl alcohol nonwovens; 3 glue point.
Fig. 2-3 is two kinds of applying glue shapes that the utility model glue compound tense adopts.
The specific embodiment
Below in conjunction with Figure of description and the specific embodiment the utility model is further described.
Embodiment 1
Adopt 45g/sm water-soluble poval hydro-entangled non-woven fabric 2 and 0.025mm thoroughly wet polyvinyl alcohol frosted style film 1 carry out compoundly, the frosting of film is outside, the light face is as compound applying glue face.
The water soluble adhesive prescription that adopts: 0499 polyvinyl alcohol resin 100phr, glycerine 15phr, modified polyether organosilicon wetting agent 0.3phr, water 300phr, solid content 28%.Resin added 30g/sm.
The glue-applying technique that adopts is woodburytype, applying glue shape such as Fig. 2 (round point shape, the distance between the adjacent glue point 3 is 3-10mm).Polyvinyl alcohol film and polyvinyl alcohol nonwoven fabric are contained in respectively on the unwinding rack separately on the gluing compounding machine, respectively by behind separately the automatic tension controller and automatic deviation rectifying device, by applying glue equipment the polyvinyl alcohol film composite surface is applied water soluble adhesive, then compound with polyvinyl alcohol nonwovens rapidly, the hot milling roller surface of importing center heating, roll side cut, rolling after cooling.Recombination velocity is 20m/min, and hot milling roller surface temperature is 90 ℃, adopts second heat to roll, and then the chill roll with the center cooling water circulation cools off.
The composite that obtains, its performance following (this example fabric has good poisture-penetrability and flexibility for the manufacture of protective garment):
Poisture-penetrability: 5300g/sm.d;
Sherry stiffness: 4;
Water-soluble residue: 0;
Do peel strength: 15N/3 ";
Wet peel strength: 3.7N/3 ".
Embodiment 2
Adopt 60g/sm water-soluble poval hydro-entangled non-woven fabric 2 and 0.04mm polyvinyl alcohol transparency color film 1 to carry out compound.
The water soluble adhesive prescription that adopts: 0499 polyvinyl alcohol resin 100phr, glycerine 15phr, modified polyether organosilicon wetting agent 0.3phr, water 400phr, solid content 22%.Resin added 60g/sm.
The glue-applying technique that adopts is woodburytype, applying glue shape such as Fig. 3 (rhombus, the distance that adjacent glue point is 3 is 1-5mm).Recombination velocity is 15m/min, and hot milling roller surface temperature is 120 ℃, adopts once that heat rolls, and then protects width of cloth oven dry through the pin pincers, at last with the chill roll cooling of center cooling water circulation.
The composite that obtains, its performance following (this product does not have thoroughly wet requirement, but the antiseep requirement is arranged, such as hydrostatic pressing as pavement):
Hydrostatic pressing: 2500mmH
2O;
Sherry stiffness: 7;
Water-soluble residue: 0;
Do peel strength: 18N/3 ";
Wet peel strength: 5N/3 ".
Claims (6)
1. Biodegradable multi-layered composite material with high moisture permeability, described composite by the polyvinyl alcohol film of one deck water-soluble biodegradable at least and at least the polyvinyl alcohol nonwovens of one deck water-soluble biodegradable be composited, it is characterized in that, described polyvinyl alcohol film and polyvinyl alcohol nonwovens adopt water soluble adhesive compound, make and form a plurality of glue points between polyvinyl alcohol film and the polyvinyl alcohol nonwovens.
2. Biodegradable multi-layered composite material with high moisture permeability according to claim 1 is characterized in that, described a plurality of glue points are evenly distributed.
3. Biodegradable multi-layered composite material with high moisture permeability according to claim 1 and 2 is characterized in that, described a plurality of glue points with point-like, letter or decorative pattern shape uniformly at intervals on the composite surface of polyvinyl alcohol film.
4. Biodegradable multi-layered composite material with high moisture permeability according to claim 1 and 2 is characterized in that, the distance between the adjacent glue point is 1-20mm.
5. Biodegradable multi-layered composite material with high moisture permeability according to claim 1 and 2 is characterized in that, described polyvinyl alcohol film is transparent membrane, frosting film or decorative pattern film, and its thickness is 0.005-0.2mm; The grammes per square metre of described polyvinyl alcohol nonwovens is at 30-130g/sqm.
6. Biodegradable multi-layered composite material with high moisture permeability according to claim 5 is characterized in that, described polyvinyl alcohol film is transparent membrane, frosting film or decorative pattern film, and its thickness is 0.01-0.04mm; The grammes per square metre of described polyvinyl alcohol nonwovens is at 55-110g/sqm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293507 CN203236797U (en) | 2013-05-24 | 2013-05-24 | High-moisture-permeability biodegradable multilayer composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320293507 CN203236797U (en) | 2013-05-24 | 2013-05-24 | High-moisture-permeability biodegradable multilayer composite material |
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| CN203236797U true CN203236797U (en) | 2013-10-16 |
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| CN 201320293507 Expired - Lifetime CN203236797U (en) | 2013-05-24 | 2013-05-24 | High-moisture-permeability biodegradable multilayer composite material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922680A (en) * | 2016-04-25 | 2016-09-07 | 绍兴武城针织有限公司 | Textile fabric, and weaving process and application thereof |
| CN106751719A (en) * | 2016-12-01 | 2017-05-31 | 江苏宏远新材料科技有限公司 | Temperature-sensitive waterproof moisture-permeable film |
-
2013
- 2013-05-24 CN CN 201320293507 patent/CN203236797U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105922680A (en) * | 2016-04-25 | 2016-09-07 | 绍兴武城针织有限公司 | Textile fabric, and weaving process and application thereof |
| CN106751719A (en) * | 2016-12-01 | 2017-05-31 | 江苏宏远新材料科技有限公司 | Temperature-sensitive waterproof moisture-permeable film |
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Effective date of registration: 20160205 Address after: 241000 Anhui province Wuhu Jiujiang City Jiujiang District Economic Development Zone on the eastern side of the road B1 Patentee after: SHIYUAN TECHNOLOGY (WUHU) NEW MATERIAL CO.,LTD. Address before: Jiaxing City, Zhejiang Province, Hong Road 314031 Xiuzhou Industrial Zone No. 1805 Patentee before: GRI MEDICAL & ELECTRONIC TECHNOLOGY Co.,Ltd. |
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Granted publication date: 20131016 |
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| CX01 | Expiry of patent term |