CN1315937C - Process for preparing moisture permeability anti-virus polytetrafluoroethylene composite film - Google Patents
Process for preparing moisture permeability anti-virus polytetrafluoroethylene composite film Download PDFInfo
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- CN1315937C CN1315937C CNB031477062A CN03147706A CN1315937C CN 1315937 C CN1315937 C CN 1315937C CN B031477062 A CNB031477062 A CN B031477062A CN 03147706 A CN03147706 A CN 03147706A CN 1315937 C CN1315937 C CN 1315937C
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- moisture permeability
- composite film
- virus
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- polytetrafluoroethylene
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Abstract
The present invention relates to a method for preparing moisture permeability antivirus polytetrafluoroethylene composite films. The method comprises the following steps: firstly, a polytetrafluoroethylene biaxial tension microporous film is uniformly attached to a fabric baseband, and both side edges of the polytetrafluoroethylene biaxial tension microporous film are glued to and fixed with the fabric baseband by binding rubber strips; secondly, a moisture permeability polyurethane or blocked polyester ether solution continuously and homogeneously coated on the polytetrafluoroethylene microporous film by a coating machine and then is dried by a cloth tong or pin stenter at 80 to 190 DEG C to obtain a moisture permeability composite film; finally, the binding rubber strips on both of the two side edges of the moisture permeability composite film are particularly cut by an edge cutter, the fabric baseband is disintegrated with the moisture permeability composite film then, and a moisture permeability antivirus polytetrafluoroethylene composite film can be prpared.
Description
Technical field
The present invention relates to a kind of preparation method of moisture permeability anti-virus polytetrafluoroethylcomposite composite film, this method adopts the polytetrafluoroethyltwo two-way stretch microporous membrane attached on separate-type paper or the fabric, apply moisture permeability urethane or block polyether ester solution at ptfe surface, under 80～190 ℃ of temperature, on boarding machine, dry then, peel off then and make composite membrane.
Background technology
In prior art, polytetrafluoroethylmicroporous microporous membrane Waterproof Breathable laminated fabric is the high-tech product that integrates functions such as waterproof, saturating wet, windproof and chemical defence.Film thickness is 20～30 microns, 0.2～0.3 micron in aperture, and going up per square inch has 9,000,000,000 micropores approximately, and percentage of open area is up to 80%.Because the specific surface area of polytetrafluoroethylene film is big, easily adsorb the materials such as salinity, grease and makeup among dust, the human sweat, washing composition also easily remains in the hole, cause water-repellancy to descend, owing to some virion diameter less (as sars coronavirus, AIDS virus etc.), its protection intercepts dangerous simultaneously.On polytetrafluoroethylene film, apply urethane or the fine and close sealer coat of polyether ester with water vapour permeability, the asymmetric compound film of making like this, can reach wet, the effect of waterproof, the various viruses of obstruct.Therefore, need to propose a kind of preparation method of moisture permeability anti-virus polytetrafluoroethylcomposite composite film.
Summary of the invention
The preparation method who the purpose of this invention is to provide a kind of moisture permeability anti-virus polytetrafluoroethylcomposite composite film, this method adopts microporous teflon membran to apply moisture permeability urethane or block polyether ester solution, then under 80～190 ℃ temperature, dry, be prepared into moisture permeability anti-virus polytetrafluoroethylcomposite composite film.
The object of the present invention is achieved like this: a kind of preparation method of moisture permeability anti-virus polytetrafluoroethylcomposite composite film is characterized in that:
A, with a polytetrafluoroethyltwo two-way stretch microporous membrane equably attached on the textile type base band, described polytetrafluoroethyltwo two-way stretch microporous membrane dual-side is adhesively fixed by bonding adhesive tape and described textile type base band;
B, use coating machine are coated in moisture permeability urethane or block polyether ester solution on the described microporous teflon membran continuously equably, use cloth gripper or pin tenter 80～190 ℃ of oven dry down then, make the moisture permeability composite membrane;
C, use edge cutter partly excise the described bonding adhesive tape of moisture permeability composite membrane dual-side, then the textile type base band are separated with the moisture permeability composite membrane, promptly can be made into moisture permeability anti-virus polytetrafluoroethylcomposite composite film.
Compared with the prior art the present invention has following advantage:
1. utilize the film thickness of the prepared moisture permeability anti-virus polytetrafluoroethylcomposite composite film of method of the present invention to control easily, technology is simple, equipment is simple, cost is low.
2. the composite membrane that utilizes the present invention to prepare has good anti-virus, water pressure resistance and water vapour permeability, and an anti-fastness and the washing resistance performance of composite membrane all are greatly improved simultaneously.
3. utilize the prepared composite membrane of method of the present invention can be compound, make various protective clothess, have remarkable economic efficiency and social benefit with various fabrics.
Embodiment
Embodiment one:
A kind of preparation method of moisture permeability anti-virus polytetrafluoroethylcomposite composite film, its concrete steps are:
A, with a polytetrafluoroethyltwo two-way stretch microporous membrane equably attached on the textile type base band, described polytetrafluoroethyltwo two-way stretch microporous membrane dual-side is adhesively fixed by bonding adhesive tape and described textile type base band; Described adhesive tape width is 2 centimetres.
B, use coating machine are coated in the moisture permeability polyurethane solution on the described microporous teflon membran continuously equably, use pin tenter 140 ℃ of oven dry down then, make the moisture permeability composite membrane; Described moisture permeability polyurethane solution viscosity is 3000～8000 centipoises, and coated weight is 2-30g/m
2
C, use edge cutter partly excise the described bonding adhesive tape of moisture permeability composite membrane dual-side, then the textile type base band are separated with the moisture permeability composite membrane, separately reel, and promptly can be made into moisture permeability anti-virus polytetrafluoroethylcomposite composite film.
In the present embodiment, the viscosity of using solvent and thinner to allocate described polyurethane solution, employed solvent is a kind of in dimethyl formamide, N,N-DIMETHYLACETAMIDE, dimethyl sulfoxide (DMSO) or the cresols-toluene; The employed thinner of present embodiment is a kind of in toluene, butanone, Virahol, ethylene glycol, ethyl acetate or the acetone.
The formed thin polyurethane film thickness of present embodiment is 3～40 microns, and microporous teflon membran thickness is 10～60 microns.
Experimental result shows, can the wet thoroughly composite membrane of processing polytetrafluoroethylregenerated microvoid polyurethane by aforesaid method.The vapor transfer rate of composite membrane is up to 13490 grams/square metre 24 hours (pressing dry agar diffusion method test among the GB/T12704-91), 90 kPas of water pressure resistances (pressing the GB4744-84 test), filtration efficiency to microorganism in the air reaches more than 99%, filtration efficiency to microorganisms such as polioviruses in the liquid reaches more than 99%, filtration efficiency to granular biomone reaches more than 99%, synthetic blood impermeable (pressing the GB19082-2003 test).Composite membrane has the anti-virus performance, with woven cloth, looped fabric or non-woven by tackiness agent compound after, can be widely used in medical personnel, disinfect personnel, cleanup crew, the epidemic-stricken area protective garment fabrics such as personnel that exercise a public function.
Embodiment two:
A kind of preparation method of moisture permeability anti-virus polytetrafluoroethylcomposite composite film, its concrete steps are:
A, with a polytetrafluoroethyltwo two-way stretch microporous membrane equably attached on the textile type base band, described polytetrafluoroethyltwo two-way stretch microporous membrane dual-side is adhesively fixed by bonding adhesive tape and described textile type base band; Described adhesive tape width is 2 centimetres.
B, use coating machine are coated in moisture permeability block polyether ester solution on the described microporous teflon membran continuously equably, use pin tenter 180 ℃ of oven dry down then, make the moisture permeability composite membrane; Described moisture permeability segmented polyetherester soltion viscosity is 2000～7000 centipoises, and coated weight is 3-25g/m
2
C, use edge cutter partly excise the described bonding adhesive tape of moisture permeability composite membrane dual-side, then the textile type base band are separated with the moisture permeability composite membrane, separately reel, and promptly can be made into moisture permeability anti-virus polytetrafluoroethylcomposite composite film.
In the present embodiment, the viscosity of using solvent and thinner to allocate described block polyether ester solution, employed solvent is a kind of in dimethyl formamide, N,N-DIMETHYLACETAMIDE, dimethyl sulfoxide (DMSO) or the cresols-toluene; The employed thinner of present embodiment is a kind of in toluene, butanone, Virahol, ethylene glycol, ethyl acetate or the acetone.
The formed segmented polyetherester film thickness of present embodiment is 3～30 microns, and microporous teflon membran thickness is 10～60 microns.
Experimental result shows, can the wet thoroughly composite membrane of processing polytetrafluoroethylregenerated micropore segmented polyetherester by aforesaid method.The vapor transfer rate of composite membrane is up to 10670 grams/square metre 24 hours (pressing dry agar diffusion method test among the GB/T12704-91), 89 kPas of water pressure resistances (pressing the GB4744-84 test), filtration efficiency to microorganism in the air reaches more than 99%, filtration efficiency to microorganisms such as polioviruses in the liquid reaches more than 99%, filtration efficiency to granular biomone reaches more than 99%, synthetic blood impermeable (pressing the GB19082-2003 test).
Claims (5)
1, a kind of preparation method of moisture permeability anti-virus polytetrafluoroethylcomposite composite film is characterized in that:
A, with a polytetrafluoroethyltwo two-way stretch microporous membrane equably attached on the textile type base band, described polytetrafluoroethyltwo two-way stretch microporous membrane dual-side is adhesively fixed by bonding adhesive tape and described textile type base band;
B, use coating machine are coated in moisture permeability urethane or block polyether ester solution on the described microporous teflon membran continuously equably, use cloth gripper or pin tenter 80～190 ℃ of oven dry down then, make the moisture permeability composite membrane;
C, use edge cutter partly excise the described bonding adhesive tape of moisture permeability composite membrane dual-side, then the textile type base band are separated with the moisture permeability composite membrane, promptly can be made into moisture permeability anti-virus polytetrafluoroethylcomposite composite film.
2, the preparation method of polytetrafluoroethylcomposite composite film according to claim 1, it is characterized in that: the viscosity of using solvent and thinner to allocate described urethane or block polyether ester solution, described solvent are a kind of in dimethyl formamide, N,N-DIMETHYLACETAMIDE, dimethyl sulfoxide (DMSO) or the toluene; Described thinner is a kind of in toluene, butanone, Virahol, ethylene glycol, ethyl acetate or the acetone.
3, the preparation method of polytetrafluoroethylcomposite composite film according to claim 1 is characterized in that: described moisture permeability polyurethane solution viscosity is 3000～8000 centipoises, and coated weight is 2-30g/m
2, bake out temperature is 80～190 ℃.
4, the preparation method of polytetrafluoroethylcomposite composite film according to claim 1 is characterized in that: described moisture permeability segmented polyetherester soltion viscosity is the 2000-7000 centipoise, and coated weight is 3-25g/m
2, bake out temperature is 80～190 ℃.
5, the preparation method of polytetrafluoroethylcomposite composite film according to claim 1, it is characterized in that: the thickness of described polyurethane film is that the thickness of 3～40 microns or described block polyether ester film is 3～30 microns, and microporous teflon membran thickness is the 10-60 micron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031477062A CN1315937C (en) | 2003-06-25 | 2003-06-25 | Process for preparing moisture permeability anti-virus polytetrafluoroethylene composite film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB031477062A CN1315937C (en) | 2003-06-25 | 2003-06-25 | Process for preparing moisture permeability anti-virus polytetrafluoroethylene composite film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1566204A CN1566204A (en) | 2005-01-19 |
| CN1315937C true CN1315937C (en) | 2007-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031477062A Expired - Fee Related CN1315937C (en) | 2003-06-25 | 2003-06-25 | Process for preparing moisture permeability anti-virus polytetrafluoroethylene composite film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101362035B (en) * | 2007-08-08 | 2010-05-26 | 李朝晖 | Expanded polytetrafluoroethylene bacteriostatic coated filter material and production method thereof |
| CN103862774A (en) * | 2014-03-25 | 2014-06-18 | 湖州森诺氟材料科技有限公司 | Double-component windproof ventilating film |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377864C (en) * | 2005-12-05 | 2008-04-02 | 浙江理工大学 | Preparation method of composite film of poly tetrafluoro ethylene and thermoplastic polyurethane |
| EP1772552A3 (en) * | 2006-07-20 | 2007-06-20 | Singtex Industrial Co., Ltd. | Porous polytetrafluoroethylene membrane treated with an anti-staining and anti-peeling agent |
| CN102952284B (en) * | 2012-11-27 | 2014-04-23 | 中材科技股份有限公司 | Microporous membrane modification method |
| US9855534B1 (en) * | 2016-12-28 | 2018-01-02 | Pall Corporation | Porous PTFE membranes for metal removal |
| CN109177425A (en) * | 2018-09-20 | 2019-01-11 | 东莞奥得时精密电子有限公司 | A kind of waterproof and breathable membrane structure material and thermal-adhering equipment |
| JP2022102131A (en) * | 2020-12-25 | 2022-07-07 | 衛普實業股▲ふん▼有限公司 | Blood and virus blocking waterproof moisture permeable composite nonwoven fabric |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526168Y (en) * | 2002-02-01 | 2002-12-18 | 宁波登天氟材有限公司 | Water proof fabrics |
-
2003
- 2003-06-25 CN CNB031477062A patent/CN1315937C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2526168Y (en) * | 2002-02-01 | 2002-12-18 | 宁波登天氟材有限公司 | Water proof fabrics |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101362035B (en) * | 2007-08-08 | 2010-05-26 | 李朝晖 | Expanded polytetrafluoroethylene bacteriostatic coated filter material and production method thereof |
| CN103862774A (en) * | 2014-03-25 | 2014-06-18 | 湖州森诺氟材料科技有限公司 | Double-component windproof ventilating film |
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| Publication number | Publication date |
|---|---|
| CN1566204A (en) | 2005-01-19 |
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