Wet waterproof moisture-permeable leather production method

A waterproof and moisture-permeable, production method technology, applied in the direction of chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve the problems of clothing mildew damage, poor moisture permeability, stuffy and airtight, etc., and it is not easy to achieve Mildew damage, high water pressure resistance, comfortable wearing effect

Active Publication Date: 2014-11-12

江苏协孚新材料科技有限公司

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AI-Extracted Technical Summary

Problems solved by technology

[0002] Artificial leather materials are often used in apparel products. Conventional artificial leather is made by applying a wet mixture on the base fabric to form a wet base, and then pasting a dry process veneer on the wet base. Because the human body often s...

Abstract

The invention discloses a wet waterproof moisture-permeable leather production method. The method comprises the following steps: uniformly mixing 5-10 parts of dimethyl formamide with 0.5-2 parts of acolor paste, and filtering; adding 80-100 parts of dimethyl formamide, 1-3 parts of a cell modifier and 1-2 parts of a bridging agent, and uniformly mixing; adding 100kg of a polyurethane wet waterproof moisture-permeable resin, uniformly stirring, and deaerating to obtain a coating; knife-coating the coating on a base cloth, solidifying, squeezing, washing with water, and drying to obtain a finished product. A wet waterproof moisture-permeable layer with moisture-permeable cell structure is formed after the wet slurry is knife-coated on the base cloth, and has good water permeability and high water pressure resistance. A result of detection shows that the water pressure resistance of the wet waterproof moisture-permeable layer is greater than 5000mm.H2O (JISL1092B standard), and the moisture permeability of the wet waterproof moisture-permeable layer is greater than 5000g/m<2>.d (JISL 1099B standard). Clothes made by using the obtained wet waterproof moisture-permeable leather have the advantages of comfortable wearing, difficult moldy damage and durability.

Application Domain

Synthetic resin layered productsTextiles and paper

Technology Topic

Dimethyl formamideMoisture permeability +5

Examples

Experimental program(3)

Example Embodiment

[0019] Example 1: A production method of wet-method waterproof and moisture-permeable leather, the specific steps are as follows:

[0020] Step 1: Wet mixing ingredients:

[0021] a. Stir 5kg of dimethylformamide and 0.5kg of white pulp at high speed for 80 minutes, and then use 240 mesh nylon mesh to filter for use;

[0022] b. Mix and stir 80kg of dimethylformamide, 1kg of cell regulator and 1kg of bridging agent for 20 minutes, and then add the filtered mixture in step a and stir evenly for use;

[0023] c. Add 100kg of polyurethane wet-method waterproof and moisture-permeable resin to the mixture formed in step b, stir for 30 minutes, and degas for 40 minutes;

[0024] Step 2: Coating production:

[0025] Scrape the degassed slurry in step one on the textile nylon fabric fiber, immerse it in a 15% dimethylformamide aqueous solution by mass percentage for solidification, and then go through at least one water rolling process, and then wash and After drying, the vehicle speed is 20-25 meters/min to obtain a finished product of wet-process waterproof and moisture-permeable leather.

Example Embodiment

[0026] Embodiment 2: A production method of wet-method waterproof and moisture-permeable leather, the specific steps are as follows:

[0027] Step 1: Wet mixing ingredients:

[0028] a. Mix 8kg of dimethylformamide and 1kg of white pulp at high speed for 90 minutes, and then use a 240 mesh nylon mesh to filter for use;

[0029] b. Mix 90kg of dimethylformamide, 2kg of cell regulator and 1.5kg of bridging agent for 25 minutes, and then add the filtered mixture in step a and stir evenly for use;

[0030] c. Add 100kg of polyurethane wet-method waterproof and moisture-permeable resin to the mixture formed in step b, stir for 35 minutes, and degas for 45 minutes;

[0031] Step 2: Coating production:

[0032] Scrape the degassed slurry in step one on the textile nylon cloth fiber, immerse it in an 18% dimethylformamide aqueous solution with a mass percentage concentration of 18% for solidification, and then go through at least one water rolling process, and then wash and After drying, the vehicle speed is 20-25 meters/min to obtain a finished product of wet-process waterproof and moisture-permeable leather.

Example Embodiment

[0033] Embodiment 3: A production method of wet-method waterproof and moisture-permeable leather, the specific steps are as follows:

[0034] Step 1: Wet mixing ingredients:

[0035] a. Stir 10kg of dimethylformamide and 2kg of white pulp at high speed for 100 minutes, and then use a 240 mesh nylon mesh to filter for use;

[0036] b. Mix and stir 100kg of dimethylformamide, 3kg of cell regulator and 2kg of bridging agent for 30 minutes, then add the filtered mixture in step a and stir evenly for use;

[0037] c. Add 100kg of polyurethane wet-method waterproof and moisture-permeable resin to the mixture formed in step b, stir for 40 minutes, and degas for 50 minutes;

[0038] Step 2: Coating production:

[0039] Scrape the degassed slurry in step one on the textile nylon cloth fiber, immerse it in a 20% dimethylformamide aqueous solution with a mass percentage concentration of 20% for solidification, and then go through at least one water rolling process, and then wash and After drying, the vehicle speed is 20-25 meters/min to obtain a finished product of wet-process waterproof and moisture-permeable leather.

PUM

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