CN111231193A - Preparation method of water-based microporous waterproof moisture-permeable film - Google Patents
Preparation method of water-based microporous waterproof moisture-permeable film Download PDFInfo
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- CN111231193A CN111231193A CN202010033153.1A CN202010033153A CN111231193A CN 111231193 A CN111231193 A CN 111231193A CN 202010033153 A CN202010033153 A CN 202010033153A CN 111231193 A CN111231193 A CN 111231193A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/24—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length
- B29C41/30—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of indefinite length incorporating preformed parts or layers, e.g. moulding around inserts or for coating articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0092—Drying moulded articles or half products, e.g. preforms, during or after moulding or cooling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/36—Feeding the material on to the mould, core or other substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/42—Removing articles from moulds, cores or other substrates
- B29C41/44—Articles of indefinite length
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/34—Component parts, details or accessories; Auxiliary operations
- B29C41/46—Heating or cooling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
Abstract
The invention discloses a preparation method of a water-based microporous waterproof moisture-permeable membrane, which comprises the following steps: s1, preparing materials, namely weighing the following raw materials in parts by weight: 100 parts of aqueous polyurethane emulsion, 5-8 parts of toluene, 10-20 parts of ammonia water, 2-3 parts of a waterproof agent and 65-70 parts of water; s2, mixing, namely mixing the raw materials weighed in the step S1 to obtain a colloidal mixture; s3, coating, namely uniformly coating the mixture on release paper; entering the step S4 in an unset state after the mixture is coated; s4, drying, namely conveying the release paper coated with the mixture into a drying oven to be dried, wherein at least three levels of temperature are set in the drying oven, the first level of temperature is 78-80 ℃, the second level of temperature is 100-120 ℃, and the third level of temperature is 150-160 ℃; and S5, peeling off, drying and peeling off the release paper to obtain the water-based microporous waterproof moisture-permeable film. The finished film product prepared by the method has the functions of moisture permeability and water drop prevention, water drops on the film surface can not be swelled, and meanwhile, the microporous waterproof moisture permeable film has excellent elasticity.
Description
Technical Field
The invention relates to the field of textiles, in particular to a preparation method of a water-based microporous waterproof moisture-permeable membrane.
Background
The microporous moisture permeable film is a special waterproof moisture permeable film which is different from a hydrophilic dry moisture permeable coating, and the special characteristics of the microporous moisture permeable film are as follows: the film is formed by a large number of micropores which are formed during film forming, the pores are smaller than 10um, can prevent small water drops (with the average diameter of 100um) from permeating to obtain water pressure resistance, and allow water vapor (with the average diameter of 0.0004um) to freely pass through, so that moisture permeability is obtained, and the micropores really solve the problems of heat dissipation and air permeability when the motion amount of a human body is large and have waterproof performance. The fabric made of the microporous moisture permeable film does not expand when meeting water, has better washing resistance, ensures higher moisture permeable and breathable performance, and ensures that the body of a person keeps absolutely dry and comfortable for a long time.
The PTFE membrane-polytetrafluoroethylene membrane (PTFE membrane for short) commonly used on the textile has the characteristics of acid and alkali resistance and resistance to various organic solvents, and is almost insoluble in all organic solvents. The PTFE film has good microporous pore-forming effect, can realize good waterproof and moisture-permeable effects, but has the environmental protection problems of being incapable of decomposing and recycling, and the layer is easy to peel off, has no elasticity and is expensive. The boverl PU microporous membrane can leak oil (not suitable for directly contacting the skin), and cannot be applied to wearing of spring and summer products.
The invention application with the document number of CN104479337A discloses a preparation process of a waterproof breathable moisture-permeable microporous film, wherein a film coating solution contains polyurethane resin and DMF, the coating solution is uniformly coated on a carrier, and after the coating solution is solidified, the coating solution is washed with water and dried for shaping, and micropores are formed according to the principle that a solvent DMF volatilizes to form pores. The invention application with the reference number of CN110183717A discloses a production process of a wet-process microporous membrane, wherein a solvent adopted is DMF, a mixed solution is coated on release paper, the release paper is soaked in DMF solution and then dried to form a membrane blank, then the membrane blank is placed in a replacement tank with DMF for treatment and then dried, and holes are formed by volatilizing the DMF solvent according to the same principle.
DMF is dimethyl fumarate, also known as: (E) dimethyl 2-butenedioate is a stable, extremely volatile and odorless compound, belongs to a biological insecticide, but is not listed in an insecticide list authorized by the European Union under the (EC) No 1451/2007 standard, and can cause irritation and even harm to skin, eyes, mucous membranes and upper respiratory tracts after being contacted, inhaled or ingested by a human body, so that most environmental regulations limit the content of dimethyl 2-butenedioate, and therefore, in the two production processes, part of DMF remains in holes in the holes during the process of forming the holes through the DMF, so that the DMF exists in the prepared films, and the requirements of partial consumer markets of the current products are not met.
Disclosure of Invention
The invention aims to provide a preparation method of a water-based microporous waterproof moisture-permeable membrane, which is used for preparing a membrane with excellent moisture vapor permeability and elasticity by a more environment-friendly method. In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method of a water-based microporous waterproof moisture-permeable film comprises the following steps:
s1, preparing materials, namely weighing the following raw materials in parts by weight: 100 parts of aqueous polyurethane emulsion, 5-8 parts of toluene, 10-20 parts of ammonia water, 2-3 parts of a waterproof agent and 65-70 parts of water.
And S2, mixing, namely mixing the raw materials weighed in the step S1, stirring at the rotating speed of 800-1500 RPM, fully mixing, emulsifying and stirring to obtain a colloidal mixture.
S3, coating, namely uniformly coating the mixture on release paper; the uncured state of the mixture after coating is performed in step S4.
S4, drying, namely feeding the release paper coated with the mixture into a drying oven to be dried, wherein at least three stages of temperatures are set in the drying oven, the first stage of temperature is 78-80 ℃, the second stage of temperature is 100-120 ℃, the third stage of temperature is 150-160 ℃, and the release paper coated with the mixture is dried from low temperature to high temperature in sequence from the entrance of the drying oven.
And S5, peeling off, drying and peeling off the release paper to obtain the water-based microporous waterproof moisture-permeable film.
Further, the step S1 further includes the following raw materials in parts by weight: 15-20 parts of acrylic acid.
Preferably, the coating amount is controlled to 150g/m in step S32～320g/m2The coating speed is 10 m/min to 20 m/min, and the speed of moving in the oven in step S4 is 10 m/min to 20 m/min.
In one embodiment, the coating weight is controlled to 150g/m in step S32～180g/m2The coating speed is 18 m/min-20 m/min, and the step S4 is to dry four matched sections at the temperature of 80 ℃, 120 ℃, 150 ℃ and 160 ℃ from low to high.
In one embodiment, the coating weight is controlled to 300g/m in step S32～320g/m2The coating speed is 10 m/min-12 m/min, and the step S4 is to dry five matched sections at the temperature of 80 ℃, 90 ℃, 110 ℃, 150 ℃ and 160 ℃ respectively from low to high.
Preferably, in the step S3, the release paper is a water-oil two-sided release paper, and the mixture is uniformly coated on the oil side of the release paper.
Preferably, the raw materials are mixed and stirred in step S2, and then subjected to vacuum defoaming treatment to obtain a defoamed colloidal mixture.
Preferably, the rotation speed of the stirring in step S2 is 1000 RPM.
Further, the waterproof agent is a cationic waterproof agent.
Due to the adoption of the production process, the invention has the following beneficial effects:
1. the invention adopts at least three stages of drying temperatures, wherein the first stage temperature is 78-80 ℃, toluene in the mixture volatilizes to form partial holes, the second stage temperature is 100-120 ℃, water volatilizes to form partial holes, the third stage temperature is 150-160 ℃, the solvent in the aqueous polyurethane emulsion volatilizes to form partial holes, the mixture is gradually solidified and volatilized to form micropores through three stages of drying, the pores of the micropores are uniform, the pores are compact, and a tough film is formed after drying.
2. The moisture permeable film prepared by the invention does not contain DMF, is prepared from environment-friendly raw materials, and meets the requirements of the current product consumer market.
3. The water-based microporous waterproof moisture-permeable film prepared by the preparation method has the pore size of less than 10 mu m, has the functions of moisture permeability and water drop prevention, can not swell water drops on the film surface, is used for fabrics, and can avoid the influence on the appearance of the fabrics due to the deformation of the fabrics when meeting water. Meanwhile, the microporous waterproof moisture-permeable film has excellent elasticity and heat-seal adhesion degree, the elastic elongation can reach 20%, the microporous waterproof moisture-permeable film is suitable for being used in combination with spandex elastic fabrics, the heat-seal adhesion strength can reach more than 1 kilogram, and the microporous waterproof moisture-permeable film is used for fabrics without worrying about the problem of interlayer peeling after the fabrics are washed by water.
4. The acrylic acid is added into the raw materials, so that the hand feeling of the prepared moisture permeable film can be adjusted, and the smoothness and the anti-blocking property of a finished product are improved.
Drawings
FIG. 1 is a schematic partial cross-sectional electron microscope view of the water-based microporous waterproof moisture-permeable film prepared in the first embodiment.
FIG. 2 is a surface electron microscope image of the water-based microporous waterproof moisture-permeable film prepared in example two.
Fig. 3 is a partial cross-sectional schematic view of fig. 2.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
The invention discloses a preparation method of a water-based microporous waterproof moisture-permeable membrane, which comprises the following steps:
s1, preparing materials, namely weighing the following raw materials in parts by weight: 100 parts of aqueous polyurethane emulsion, 5-8 parts of toluene, 10-20 parts of ammonia water, 2-3 parts of a waterproof agent, 65-70 parts of water and 15-20 parts of acrylic acid. The water-proofing agent is selected from cationic water-proofing agent, such as water-proofing agent of Jiangsu Ruiyang Antai No. B-NH, low-temperature carbon six-carbon eight-series water-proofing agent, etc. Table 1 shows examples of several raw material choices:
TABLE 1 selection of raw materials for the aqueous microporous waterproof moisture-permeable film (unit: parts by weight)
And S2, mixing, namely mixing the raw materials weighed in the step S1, stirring at the rotating speed of 800-1500 RPM, fully mixing and emulsifying, stirring, and performing vacuum defoaming treatment to obtain a defoamed colloidal mixture.
S3, coating, namely uniformly coating the mixture on release paper, wherein the release paper adopts water-oil two-sided release paper, and the mixture is uniformly coated on the oil side of the release paper. The coating weight is controlled to be 150g/m2～320g/m2The coating speed is 10 m/min to 20 m/min. The uncured state of the mixture after coating is performed in step S4.
The relationship between the coating amount and the film thickness, water pressure resistance and moisture permeability of the finished product is shown in Table 2, and different coating amounts are selected according to the desired product properties.
TABLE 2 relationship between coating amount and finished film thickness, water pressure resistance and moisture permeability
| Coating weight (g/m)2) | 150～180 | 200～220 | 300～320 |
| Film thickness (mum) | 12～15 | 18～25 | 25～30 |
| Resistance to Water pressure (mmH)2O) | 700～1000 | 1500～3000 | 8000～10000 |
| Moisture permeability (g/m)2.day) | 8000～12000 | 5000～7000 | 3000～4000 |
S4, drying, namely feeding the release paper coated with the mixture into a drying oven to be dried, wherein at least three stages of temperatures are set in the drying oven, the first stage of temperature is 78-80 ℃, the second stage of temperature is 100-120 ℃, the third stage of temperature is 150-160 ℃, and the release paper coated with the mixture is dried from low temperature to high temperature in sequence from the entrance of the drying oven. The speed of the moving in the oven is 10 m/min to 20 m/min. The same conveyor can be adopted for coating and drying, and the release paper directly enters the oven after being coated.
And S5, peeling off, drying and peeling off the release paper to obtain the water-based microporous waterproof moisture-permeable film.
According to different actual consumption scenes of consumers, the process parameters of the steps of the invention are adjusted to obtain products with different requirements (film thickness, water pressure resistance, moisture permeability and other properties), and the following is further described by two groups of examples.
Example one
The water-based microporous waterproof moisture-permeable membrane prepared by the embodiment has larger micropore diameter, higher moisture permeability and lower water pressure resistance, and is suitable for clothing fabrics of general shoes and windcoats.
The specific preparation process is detailed as follows.
S1, preparing materials, and blending according to the raw material components and the proportion in the first embodiment in the table 1.
And S2, mixing, namely mixing the raw materials, stirring at the rotating speed of 1000RPM, fully mixing, emulsifying, stirring, and performing vacuum defoaming treatment to obtain a defoamed colloidal mixture.
S3, coating, namely uniformly coating the mixture on release paper, and controlling the coating weight to be 150g/m2～180g/m2The coating speed is 18 m/min to 20 m/min. The uncured state of the mixture after coating is performed in step S4.
And S4, drying, namely conveying the release paper coated with the mixture into a drying oven for drying, setting four-stage temperatures in the drying oven, wherein the first-stage temperature is 80 ℃, the second-stage temperature is 120 ℃, the third-stage temperature is 150 ℃, and the fourth-stage temperature is 160 ℃, and drying the release paper coated with the mixture at low to high temperatures from an inlet of the drying oven in sequence.
And S5, peeling off, drying and peeling off the release paper to obtain the water-based microporous waterproof moisture-permeable film.
The finished product prepared in the embodiment is observed under an electron microscope to obtain a graph 1, and the aperture of the micropores of the water-based microporous waterproof moisture-permeable membrane prepared in the embodiment is in the range of 4-7 μm.
Example two
The prepared water-based microporous waterproof moisture-permeable membrane has the advantages of small micropore diameter, low moisture permeability and high water pressure resistance, and is suitable for clothing fabrics of outdoor jacket and ski wear.
The specific preparation process is detailed as follows.
S1, preparing materials, and blending according to the raw material components and the proportion of the second embodiment in the table 1.
And S2, mixing, namely mixing the raw materials, stirring at the rotating speed of 1000RPM, fully mixing, emulsifying, stirring, and performing vacuum defoaming treatment to obtain a defoamed colloidal mixture.
S3, coating, namely uniformly coating the mixture on release paper, and controlling the coating weight to be 300g/m2～320g/m2The coating speed is 10 m/min to 12 m/min. The uncured state of the mixture after coating is performed in step S4.
And S4, drying, namely conveying the release paper coated with the mixture into a drying oven to be dried, setting a fifth-level temperature in the drying oven, wherein the first-level temperature is 80 ℃, the second-level temperature is 90 ℃, the third-level temperature is 110 ℃, the fourth-level temperature is 150 ℃, the fifth-level temperature is 160 ℃, and drying the release paper coated with the mixture from a low temperature to a high temperature from an inlet of the drying oven in sequence.
And S5, peeling off, drying and peeling off the release paper to obtain the water-based microporous waterproof moisture-permeable film.
The finished product prepared in this example is observed under an electron microscope to obtain fig. 2 and fig. 3, and the micropores of the aqueous microporous waterproof moisture-permeable membrane prepared in this example range from 2.95 μm to 5 μm.
The finished films obtained in examples one and two were tested and the results are shown in table 3:
TABLE 3 elasticity, moisture permeability and appearance test
As can be seen from Table 3, the finished film prepared by the method of the present invention has excellent elasticity and moisture permeability, can be well combined with elastic fabrics, and has good practicability.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (9)
1. A preparation method of a water-based microporous waterproof moisture-permeable film is characterized by comprising the following steps:
s1. material preparation
Weighing the following raw materials in parts by weight: 100 parts of aqueous polyurethane emulsion, 5-8 parts of toluene, 10-20 parts of ammonia water, 2-3 parts of a waterproof agent and 65-70 parts of water;
s2. mixing
Mixing the raw materials weighed in the step S1, stirring at the rotating speed of 800 RPM-1500 RPM, fully mixing, emulsifying and stirring to obtain a colloidal mixture;
s3, coating
Uniformly coating the mixture on release paper; entering the step S4 in an unset state after the mixture is coated;
s4, drying
Sending the release paper coated with the mixture into an oven for drying, wherein at least three stages of temperatures are set in the oven, the first stage temperature is 78-80 ℃, the second stage temperature is 100-120 ℃, the third stage temperature is 150-160 ℃, and the release paper coated with the mixture is dried from low temperature to high temperature in sequence from the entrance of the oven;
s5, stripping
And peeling off the release paper after drying to obtain the water-based microporous waterproof moisture-permeable film.
2. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 1, wherein: the step S1 also comprises the following raw materials in parts by weight: 15-20 parts of acrylic acid.
3. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 1, wherein: in step S3, the coating weight is controlled to 150g/m2～320g/m2The coating speed is 10 m/min to 20 m/min, and the speed of moving in the oven in step S4 is 10 m/min to 20 m/min.
4. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 3, wherein: in step S3, the coating weight is controlled to 150g/m2～180g/m2The coating speed is 18 m/min-20 m/min, and the step S4 is to dry four matched sections at the temperature of 80 ℃, 120 ℃, 150 ℃ and 160 ℃ from low to high.
5. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 3, wherein: in step S3, the coating weight is controlled to 300g/m2～320g/m2Coating ofThe speed of the step (A) is 10-12 m/min, and the step (S4) is to dry and match five sections, wherein the temperature is from low to high, and is respectively 80 ℃, 90 ℃, 110 ℃, 150 ℃ and 160 ℃.
6. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 1, wherein: in the step S3, the release paper adopts water-oil two-sided release paper, and the mixture is uniformly coated on the oily side of the release paper.
7. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 1, wherein: in step S2, the raw materials are mixed and stirred, and then vacuum defoamed to obtain a defoamed colloidal mixture.
8. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 1, wherein: the rotation speed of the agitation in step S2 was 1000 RPM.
9. The method for preparing the aqueous microporous waterproof moisture-permeable membrane according to claim 1, wherein: the waterproof agent is a cationic waterproof agent.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300719A (en) * | 2020-03-17 | 2020-06-19 | 晋江市诺特新材料科技有限公司 | Preparation method of waterproof and moisture permeable TPU hot melt adhesive film |
| CN115044093A (en) * | 2022-06-24 | 2022-09-13 | 厦门安踏体育用品有限公司 | Porous moisture permeable film and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102555380A (en) * | 2012-01-21 | 2012-07-11 | 昆山华阳复合材料科技有限公司 | Moisture-permeable waterproof film used for fabric and fabrication process thereof |
| CN103923455A (en) * | 2014-04-18 | 2014-07-16 | 昆山金有利新材料科技有限公司 | Micro-porous polyurethane film and preparation method thereof |
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2020
- 2020-01-13 CN CN202010033153.1A patent/CN111231193A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555380A (en) * | 2012-01-21 | 2012-07-11 | 昆山华阳复合材料科技有限公司 | Moisture-permeable waterproof film used for fabric and fabrication process thereof |
| CN103923455A (en) * | 2014-04-18 | 2014-07-16 | 昆山金有利新材料科技有限公司 | Micro-porous polyurethane film and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111300719A (en) * | 2020-03-17 | 2020-06-19 | 晋江市诺特新材料科技有限公司 | Preparation method of waterproof and moisture permeable TPU hot melt adhesive film |
| CN115044093A (en) * | 2022-06-24 | 2022-09-13 | 厦门安踏体育用品有限公司 | Porous moisture permeable film and preparation method and application thereof |
| CN115044093B (en) * | 2022-06-24 | 2023-08-04 | 厦门安踏体育用品有限公司 | Porous moisture-permeable membrane and preparation method and application thereof |
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