Production method for microfiber leather
A production method and technology of microfiber leather, applied in fiber processing, textile material processing, textiles and papermaking, etc., can solve the problems affecting the comfort, quality, appearance and wear life of sports shoes, poor air permeability and moisture permeability , Microfiber leather has poor drape and other problems, and achieves the effect of good air permeability and moisture permeability, strong leather feeling, and better color uniformity
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Embodiment 1
[0028] A kind of production method of microfiber leather, comprises the following steps:
[0029] 1) Spinning of composite fibers: Nylon 6 and low-density polyethylene are mixed at a mass ratio of 50:50, extruded and melted by a screw extruder, and the temperature is controlled at 245°C, and spun through the processes of drawing, oiling, and crimping Produce sea-island composite fibers;
[0030] 2) Production of non-woven fabrics: use the sea-island composite fiber produced in step 1), set the needling frequency to 500-1500 punctures / min, and the needling density to 1000-2000 punctures / m 2 , The number of laying layers is 25, the speed is 2m / min, and the average weight is 400g / ㎡ non-woven fabrics;
[0031] 3) Shaping of the non-woven fabric: Heat the non-woven fabric prepared in step 2) in an oven at 130°C for 5 minutes, and then shape it with rollers, and the thickness of the shape is 0.9mm;
[0032] 4) Prepare a high-solid content, high-viscosity polyurethane resin working...
Embodiment 2
[0039] A kind of production method of microfiber leather, comprises the following steps:
[0040] 1) Spinning of composite fibers: Nylon 6 and low-density polyethylene are mixed at a mass ratio of 55:45, extruded and melted by a screw extruder, controlled at a temperature of 260°C, and spun through the processes of drawing, oiling, and crimping. Produce sea-island composite fibers;
[0041] 2) Production of non-woven fabrics: use the sea-island composite fiber produced in step 1), set the needling frequency to 500-1500 punctures / min, and the needling density to 1000-2000 punctures / m 2 , The number of laying layers is 35 layers, the speed of the vehicle is 4m / min, and the average weight of the nonwoven fabric is 450g / ㎡;
[0042] 3) Shaping of non-woven fabrics: Heat the non-woven fabrics prepared in step 2) in an oven at 130°C for 5 minutes, and then shape them with rolls, with a thickness of 1.4mm;
[0043] 4) Prepare a high-solid content, high-viscosity polyurethane resin w...
Embodiment 3
[0050] A kind of production method of microfiber leather, comprises the following steps:
[0051] 1) Spinning of composite fibers: Nylon 6 and low-density polyethylene are mixed at a mass ratio of 60:40, extruded and melted by a screw extruder, controlled at a temperature of 270°C, and spun through the processes of drawing, oiling, and crimping. Produce sea-island composite fibers;
[0052] 2) Production of non-woven fabrics: use the sea-island composite fiber produced in step 1), set the needling frequency to 500-1500 punctures / min, and the needling density to 1000-2000 punctures / m 2 , The number of laying layers is 40 layers, the speed is 5m / min, and the average grammage is 500g / ㎡ non-woven fabrics;
[0053] 3) Shaping of the non-woven fabric: Heat the non-woven fabric prepared in step 2) in an oven at 130°C for 6 minutes, and then shape it with rollers, and the thickness of the shape is 1.9mm;
[0054] 4) Prepare a high-solid content, high-viscosity polyurethane resin wor...
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