Brief analysis of the production method of polyurethane four-sided synthetic leather for artificial leather
The production method comprises the following steps: using polyurethane as the artificial leather base material and the spandex elastic cloth as the base fabric; and the base fabric unwinding the flat web guide and sequentially dipping through the dimethylformamide water bath to coat the surface of the impregnated base fabric A polyurethane-based composite material, a polyurethane is solidified into a leather by a dimethylformamide water bath, and is bonded to the base fabric, and is washed and dried to form a finished polyurethane process. When the base fabric is guided through the two steps of the production process of coating polyurethane and solidification bonding, the base fabric is moved under the condition of constant line speed “zero†tension as its main feature, and has a production process flow. Simple, environmentally safe and low production costs. The finished product is characterized by a composite bond of a spandex elastic cloth and a polyurethane layer, and has the characteristics of four-face elongation, large elongation recovery, and good practical performance. Projection Weld Screw,Weld Fasterner,Screw Weld,Weld Screws,Bottom Projection Weld Screw Dongguan Tiloo Industrial Co., Ltd , https://www.sales-fastener.com