Production method of wet-process waterproof and moisture-permeable leather
A waterproof and moisture-permeable, production method technology, applied in chemical instruments and methods, layered products, synthetic resin layered products, etc., can solve problems such as mildew damage to clothing, poor moisture permeability, infection of bacteria, etc. Damage, high water pressure resistance, good moisture permeability
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Embodiment 1
[0019] Embodiment 1: A kind of production method of wet-process waterproof moisture-permeable leather, concrete 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, then use 240-mesh nylon mesh to filter and set aside;
[0022] b. Mix and stir 80kg dimethylformamide, 1kg cell regulator and 1kg bridging agent for 20 minutes, then add the filtered mixture in step a and stir evenly for later use;
[0023] c. Add 100kg of polyurethane wet-process waterproof and moisture-permeable resin to the mixture formed in step b, stir for 30 minutes, and defoam for 40 minutes;
[0024] Step 2: Coating Production:
[0025] Squeeze the defoamed slurry in step 1 on the nylon fiber woven cloth, immerse it in a dimethylformamide aqueous solution with a concentration of 15% by mass to solidify, then go through at least one water rolling process, and then wash and wash with water. Drying at a...
Embodiment 2
[0026] Embodiment 2: a kind of wet-process waterproof and moisture-permeable leather production method, concrete steps are as follows:
[0027] Step 1: Wet Mixing Ingredients:
[0028] a. Stir 8 kg of dimethylformamide and 1 kg of white pulp at high speed for 90 minutes, then use 240-mesh nylon mesh to filter for later use;
[0029] b. Mix and stir 90kg dimethylformamide, 2kg cell regulator and 1.5kg bridging agent for 25 minutes, then add the filtered mixture in step a and stir evenly for later use;
[0030] c. Add 100kg of polyurethane wet-process waterproof and moisture-permeable resin to the mixture formed in step b, stir for 35 minutes, and defoam for 45 minutes;
[0031] Step 2: Coating Production:
[0032] Squeeze the defoamed slurry in step 1 on the nylon fiber woven cloth, immerse it in an aqueous solution of dimethylformamide with a mass percent concentration of 18% to solidify, then go through at least one water rolling process, and then wash and wash with water. ...
Embodiment 3
[0033] Embodiment 3: A kind of production method of wet-process waterproof moisture-permeable leather, concrete 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, then use 240-mesh nylon mesh to filter for later use;
[0036] b. Mix and stir 100kg dimethylformamide, 3kg cell regulator and 2kg bridging agent for 30 minutes, then add the filtered mixture in step a and stir evenly for later use;
[0037] c. Add 100kg of polyurethane wet-process waterproof and moisture-permeable resin to the mixture formed in step b, stir for 40 minutes, and defoam for 50 minutes;
[0038] Step 2: Coating Production:
[0039] Squeeze the degassed slurry in step 1 on the nylon fiber woven cloth, immerse it in a 20% aqueous solution of dimethylformamide for solidification, then go through at least one water rolling process, and then wash and wash with water. Drying at a vehicle speed of 20-...
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