CN106113861A - Breathable films for sportswear fabric - Google Patents

Breathable films for sportswear fabric Download PDF

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Publication number
CN106113861A
CN106113861A CN201610478035.5A CN201610478035A CN106113861A CN 106113861 A CN106113861 A CN 106113861A CN 201610478035 A CN201610478035 A CN 201610478035A CN 106113861 A CN106113861 A CN 106113861A
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parts
film
degree
under conditions
stage
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CN106113861B (en
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张子睿
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Kunshan Huayang New Material Ltd Co
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Kunshan Huayang New Material Ltd Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/08—Heat resistant; Fire retardant
    • A41D31/085—Heat resistant; Fire retardant using layered materials
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/10—Impermeable to liquids, e.g. waterproof; Liquid-repellent
    • A41D31/102—Waterproof and breathable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
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    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
    • C08J9/141—Hydrocarbons
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    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/54—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00—Use of ingredients characterised by shape
    • C08K7/22—Expanded, porous or hollow particles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
    • C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • B32B2437/00—Clothing
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Abstract

The present invention discloses a kind of breathable films for sportswear fabric, its described pore type polyurethane film is scratched in silicon oil release paper and successively in the baking oven baking of 80 ~ 150 degree of thermogrades by prefabricated polyurethane slurry, is cooled to room temperature again and obtains after reaching 150 degree and being incubated；Described prefabricated polyurethane slurry is composed of the following components: polyurethane resin 100 parts, dimethylformamide 20 ~ 25 parts, toluene 32 ~ 35 parts, butanone 12 ~ 15 parts, microspheres 8 ~ 9 parts, Isosorbide-5-Nitrae one butanediol 1.5 ~ 2.5 parts, polyacrylamide 1.2 ~ 1.8 parts, acrylate 0.3 ~ 0.5 part, organosiloxane emulsion 0.2 ~ 0.3 part.The composite microporous thin film of the present invention improves elasticity and adaptability, have high intensity, do not absorb water, anti-wear performance, improve heat resistance simultaneously.

Description

Breathable films for sportswear fabric
Technical field
The present invention relates to a kind of breathable films for sportswear fabric, belong to technical field of textile fabric.
Background technology
Waterproof & Moisture Permeable Film exist greatest problem be exactly: hydrophilic group adsorbed water molecule, make fabric become the most thick and heavy, Clammy, human body dress has discomfort.Also have a kind of micro-porous membrane being namely based on nanotechnology principle, wherein mainly with The micro-porous membrane of polyurethane and polytetrafluoroethylene film are main, and both thin film have different pluses and minuses, the micro-porous of polyurethane Thin film has its excellent spring of preferable waterproofing and moisture-penetration performances, can adapt to different laminating works during the laminating of fabric Skill, prevents fabric the best situation wrinkling, elastic, in the motor process of high intensity the most out of doors, and the fabric of joint part Stretching in various degree, the most this thin-film material can be occurred to impart elasticity and the adaptability that clothing are become reconciled, also prevent The situation such as Film Tear in violent motor process so that it is no matter can have the water proofing property of excellence in which type of environment Energy.And polytetrafluoroethylene film, owing to its special microcellular structure (in netted) makes it have pore type polyurethane film institute not The wind and water preventing that can have, water vapour permeability, be better than traditional microporous polyurethane thin film, but its shortcoming it is also clear that, this material Expect that its elasticity is substantially zeroed.
Summary of the invention
It is an object of the present invention to provide a kind of breathable films for sportswear fabric, this breathable films improve elastic and Adaptability, have high intensity, do not absorb water, anti-wear performance, improve heat resistance simultaneously.
For reaching above-mentioned purpose, the technical solution used in the present invention is: a kind of breathable films for sportswear fabric, Including pore type polyurethane film, polytetrafluoroethylene film, logical between described pore type polyurethane film, polytetrafluoroethylene film Cross adhesive layer bonding；
Described pore type polyurethane film is scratched in silicon oil release paper and successively 80 ~ 150 degree of temperature by prefabricated polyurethane slurry The baking oven baking of degree gradient, is cooled to room temperature again after reaching 150 degree and being incubated and obtains；
Described prefabricated polyurethane slurry is composed of the following components:
Polyurethane resin 100 parts,
Dimethylformamide 20 ~ 25 parts,
Toluene 32 ~ 35 parts,
Butanone 12 ~ 15 parts,
Microspheres 8 ~ 9 parts,
Isosorbide-5-Nitrae one butanediol 1.5 ~ 2.5 parts,
Polyacrylamide 1.2 ~ 1.8 parts,
Acrylate 0.3 ~ 0.5 part,
Organosiloxane emulsion 0.2 ~ 0.3 part；
Described adhesive layer is composed of the following components:
Polyurethane resin 100 parts,
Dimethylformamide 12 ~ 15 parts,
Toluene (TOL) 4 ~ 6 parts,
Ethyl acetate 7 ~ 9 parts,
Microspheres 4 ~ 6 parts,
Crane span structure agent 0.2 ~ 0.4 part,
Accelerator 0.15 ~ 0.25 part,
Silane coupler 1.2 ~ 2 parts；
The baking oven baking of described 80 ~ 150 degree of thermogrades specifically includes with the next stage:
The described first stage: under conditions of 80 DEG C, carry out under air atmosphere；
Second stage: under conditions of 90 DEG C, is carried out under air atmosphere；
Phase III: under conditions of 110 DEG C, carry out under air atmosphere；
Fourth stage: under conditions of 140 DEG C, is carried out under air atmosphere.
The technical scheme improved further in technique scheme is as follows:
As preferably, the volume of described polytetrafluoroethylene film Hole accounts for the 80 ~ 90% of polytetrafluoroethylene film volume.
As preferably, the mass ratio between described polytetrafluoroethylene film and pore type polyurethane film is 1:6.5 ~ 7, thick Degree ratio is 1:0.3 ~ 0.6.
As preferably, the baking oven baking of described 80 ~ 150 degree of thermogrades specifically includes with the next stage:
The described first stage: under conditions of 80 DEG C, and carry out under the empty vapour atmosphere of low speeds flow；
Second stage: under conditions of 90 DEG C, and carry out under the empty vapour atmosphere of middling speed flowing；
Phase III: under conditions of 110 DEG C, and carry out under the empty vapour atmosphere of strong speed flowing；
Fourth stage: under conditions of 140 DEG C, and carry out under the empty vapour atmosphere of low speeds flow.
As preferably, described microspheres is akzonobel company microspheres, and it has resilient shell and is contained within The low-boiling point materials such as iso-butane, propane, pentane.
Owing to technique scheme is used, the present invention compared with prior art has following advantages and an effect:
1. the present invention is for the breathable films of sportswear fabric, can avoid due to pore type polytetrafluoroethylene film layer The materials such as the dust in the empty vapour of absorption, salt, oils and fats cosmetics and detergent in perspiration, it is achieved that keep steady for a long time Fixed waterproof and perspire vapour performance；Secondly, combine and there is layer of polyurethane and polytetrafluoroethylene film layer, improving external resistance Only while rainwater performance, have and enhance the performance internally discharging human body antiperspirant vapour so that fabric has more preferably comfort property With broader practice scope；Again, owing to this double-component thin-film material has a large amount of uniform hole, and have hydrophilic Refuse the microvoid polyurethane resin bed of the type of oil, thus be more beneficial for the discharge from human body water vapour, greatly reduce residual poly- The moisture of urethane thin-film surface, thus improve the wearability of coating fabric and wear dry and comfortable, the most significantly Improve the elasticity of PTFE film material, make clothing clothes also have good power under high sharp movement and extreme condition Learn performance.
2. the present invention is for the breathable films of sportswear fabric, for the particular combination with polytetrafluoroethylene film, excellent Changed the formula of pore type polyurethane film, thus improve elasticity and adaptability, have simultaneously high intensity, do not absorb water, wear-resisting Performance；Secondly, the present invention uses the above-mentioned solvent of special adhesive formula and silane coupler are chosen so that binding agent and gather There is between tetrafluoroethene thin film more preferable bond properties, improve heat resistance simultaneously, cold-resistant up to less than-150 DEG C, heat-resisting Up to+150 DEG C, (ISO 2136 standard) resistance to tortuous 9000 nothings are split.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1: a kind of breathable films for sportswear fabric is thin including pore type polyurethane film, politef Film, is bonded by adhesive layer between described pore type polyurethane film, polytetrafluoroethylene film, and described polytetrafluoroethylene film is every The number of square inch hole is 85 ~ 9,500,000,000, and the average diameter of hole is 0.2um ~ 10um；
Described pore type polyurethane film is scratched in silicon oil release paper and successively 80 ~ 150 degree of temperature by prefabricated polyurethane slurry The baking oven baking of degree gradient, is cooled to room temperature again after reaching 150 degree and being incubated and obtains；
Described prefabricated polyurethane slurry is composed of the following components:
Polyurethane resin 100 parts,
Dimethylformamide 22 parts,
Toluene 32 parts,
Butanone 13 parts,
Microspheres 8.5 parts,
Isosorbide-5-Nitrae one butanediol 1.8 parts；
Polyacrylamide 1.5 parts；
Acrylate 0.35 part,
Organosiloxane emulsion 0.25 part.
Described adhesive layer is composed of the following components:
Polyurethane resin 100 parts,
Dimethylformamide 12 parts,
Toluene (TOL) 5 parts,
Ethyl acetate 8 parts,
Microspheres 5 parts,
Crane span structure agent 0.3 part,
Accelerator 0.2 part,
Silane coupler 1.5 parts.
The volume of above-mentioned polytetrafluoroethylene film Hole accounts for the 80 ~ 82% of polytetrafluoroethylene film volume.
Mass ratio between above-mentioned polytetrafluoroethylene film 2 and pore type polyurethane film 1 is 1:6.5 ~ 7, and thickness ratio is 1:0.3 ~ 0.6.
The baking oven baking of above-mentioned 80 ~ 150 degree of thermogrades specifically includes with the next stage:
The described first stage: under conditions of 80 DEG C, and carry out under the empty vapour atmosphere of low speeds flow；
Second stage: under conditions of 90 DEG C, and carry out under the empty vapour atmosphere of middling speed flowing；
Phase III: under conditions of 110 DEG C, and carry out under the empty vapour atmosphere of strong speed flowing；
Fourth stage: under conditions of 140 DEG C, and carry out under the empty vapour atmosphere of low speeds flow.
Above-mentioned microspheres is akzonobel company microspheres, its have resilient shell be contained within iso-butane, third The low-boiling point material such as alkane, pentane.
Embodiment 2: a kind of breathable films for sportswear fabric, including pore type polyurethane film, polytetrafluoroethyl-ne Alkene thin film, is bonded by adhesive layer between described pore type polyurethane film, polytetrafluoroethylene film, and described politef is thin The number of film hole per square inch is 85 ~ 9,500,000,000, and the average diameter of hole is 0.2um ~ 10um；
Described pore type polyurethane film is scratched in silicon oil release paper and successively 80 ~ 150 degree of temperature by prefabricated polyurethane slurry The baking oven baking of degree gradient, is cooled to room temperature again after reaching 150 degree and being incubated and obtains；
Described prefabricated polyurethane slurry is composed of the following components:
Polyurethane resin 100 parts,
Dimethylformamide 25 parts,
Toluene 35 parts,
Butanone 15 parts,
Microspheres 9 parts,
Isosorbide-5-Nitrae one butanediol 2.2 parts；
Polyacrylamide 1.8 parts；
Acrylate 0.4 part,
Organosiloxane emulsion 0.3 part.
Described adhesive layer is composed of the following components:
Polyurethane resin 100 parts,
Dimethylformamide 15 parts,
Toluene 6 parts,
Ethyl acetate 9 parts,
Microspheres 4.5 parts,
Crane span structure agent 0.25 part,
Accelerator 0.25 part,
Silane coupler 1.8 parts.
The volume of above-mentioned polytetrafluoroethylene film Hole accounts for the 87 ~ 89% of polytetrafluoroethylene film volume.
Mass ratio between above-mentioned polytetrafluoroethylene film 2 and pore type polyurethane film 1 is 1:6.5 ~ 7, and thickness ratio is 1:0.3 ~ 0.6.
Above-mentioned microspheres is akzonobel company microspheres, its have resilient shell be contained within iso-butane, third The low-boiling point material such as alkane, pentane.
Specific targets numerical value of the present invention is as follows:
A. before hydrostatic pressing value is washed > 12000mmH2O, after five washings > and 8000mmH2O(washing methods ISO 6330, method of testing ISO 811),
B. vapor transfer rate: 10000g/m2 24h(JIS 1099 A1),
C. anti-flammability is B level by (GB8965.2-2009) criterion,
D. peel strength (GB11042-89): 4N,
It is e. cold-resistant that up to less than-150 DEG C, heat-resisting up to+150 DEG C, (ISO 2136 standard) resistance to tortuous 9000 nothings are split,
F. thin film extensibility 25%,
G. thin film response rate 96%,
H. wind-proof performance: Radix Saposhnikoviae (> 10 grades completely),
I. thermal impedance (GB/T 11048-2008 A method): 0.1097m K/W.
Use above-mentioned when the breathable films of sportswear fabric, can avoid owing to pore type politef is thin The materials such as the dust in the empty vapour of film layer absorption, salt, oils and fats cosmetics and detergent in perspiration, it is achieved that protect for a long time Keep steady fixed waterproof and perspire vapour performance；Secondly, combine and there is the hydrophilic layer of polyurethane refusing oil and polytetrafluoroethylene film layer, While improving external prevention rainwater performance, have and enhance the performance internally discharging human body antiperspirant vapour so that fabric has There are more preferably comfort property and broader practice scope；Again, due to this double-component thin-film material, there is a large amount of uniform hole Hole, and there is the microvoid polyurethane resin bed of the hydrophilic type refusing oil, thus it is more beneficial for the discharge from human body water vapour, greatly Reduce greatly the moisture of residual thin polyurethane film surface, thus improve the wearability of coating fabric and wear dry and comfortable, Most importantly substantially increase the elasticity of PTFE film material, make clothing clothes under high sharp movement and extreme condition Also there is good mechanical property；Secondly, the present invention uses the above-mentioned solvent of special adhesive formula and the selection of silane coupler Can make to have between binding agent and polytetrafluoroethylene film more preferable bond properties, improve cold tolerance simultaneously, resisting cold can Reaching less than-150 DEG C, heat-resisting up to+150 DEG C, (ISO 2136 standard) resistance to tortuous 9000 nothings are split.
Above-described embodiment, only for technology design and the feature of the explanation present invention, its object is to allow person skilled in the art Scholar will appreciate that present disclosure and implements according to this, can not limit the scope of the invention with this.All according to the present invention The equivalence that spirit is made changes or modifies, and all should contain within protection scope of the present invention.

Claims (3)

1. the breathable films for sportswear fabric, it is characterised in that: include pore type polyurethane film, polytetrafluoroethyl-ne Alkene thin film, is bonded by adhesive layer between described pore type polyurethane film, polytetrafluoroethylene film；
Described pore type polyurethane film is scratched in silicon oil release paper and successively 80 ~ 150 degree of temperature by prefabricated polyurethane slurry The baking oven baking of degree gradient, is cooled to room temperature again after reaching 150 degree and being incubated and obtains；
Described prefabricated polyurethane slurry is composed of the following components: polyurethane resin 100 parts, dimethylformamide 20 ~ 25 parts, toluene 32 ~ 35 parts, butanone 12 ~ 15 parts, microspheres 8 ~ 9 parts, Isosorbide-5-Nitrae one butanediol 1.5 ~ 2.5 parts, polyacrylamide 1.2 ~ 1.8 Part, acrylate 0.3 ~ 0.5 part, organosiloxane emulsion 0.2 ~ 0.3 part；
Described adhesive layer is composed of the following components:
Polyurethane resin 100 parts,
Dimethylformamide 12 ~ 15 parts,
Toluene (TOL) 4 ~ 6 parts,
Ethyl acetate 7 ~ 9 parts,
Microspheres 4 ~ 6 parts,
Crane span structure agent 0.2 ~ 0.4 part,
Accelerator 0.15 ~ 0.25 part,
Silane coupler 1.2 ~ 2 parts；
The baking oven baking of described 80 ~ 150 degree of thermogrades specifically includes with the next stage:
The described first stage: under conditions of 80 DEG C, carry out under air atmosphere；
Second stage: under conditions of 90 DEG C, is carried out under air atmosphere；
Phase III: under conditions of 110 DEG C, carry out under air atmosphere；
Fourth stage: under conditions of 140 DEG C, is carried out under air atmosphere.
Breathable films for sportswear fabric the most according to claim 1, it is characterised in that: described politef The volume of thin film Hole accounts for the 80 ~ 90% of polytetrafluoroethylene film volume.
Breathable films for sportswear fabric the most according to claim 1, it is characterised in that: described 80 ~ 150 degree of temperature The baking oven baking of degree gradient specifically includes with the next stage:
The described first stage: under conditions of 80 DEG C, and carry out under the empty vapour atmosphere of low speeds flow；
Second stage: under conditions of 90 DEG C, and carry out under the empty vapour atmosphere of middling speed flowing；
Phase III: under conditions of 110 DEG C, and carry out under the empty vapour atmosphere of strong speed flowing；
Fourth stage: under conditions of 140 DEG C, and carry out under the empty vapour atmosphere of low speeds flow.
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