Abstract: A method for producing elastic artificial leather includes preparing two polymers that include different crystallization degrees but similar fluidities. Fibers are made of the polymers, and non-woven cloth is made of the fibers. The non-woven cloth is then soaked in polyurethane resin. The non-woven cloth and the polyurethane resin are washed and then dried. In another method, a first type of fibers made of the polymers is mixed with a second type of fibers that can be dissolved in water, alkali or organic solvent. A non-woven cloth made of the first and second types of fibers and is soaked in polyurethane resin. The second type of fibers are then from the non-woven cloth and the polyurethane resin in order to leave elongated spaces. With either method, the recovery rate of the elastic artificial leather is above 90% after it is stretched by 10% to 200% longitudinally and transversely.

Abstract: A method for manufacturing an artificial leather comprises the following steps. First, ultramicrofiber-forming fibers having an islands-in-sea type cross-sectional configuration are formed by blend spinning or conjugate spinning. Secondly, a porous reinforcement sheet of low compactness is formed from polyester, polyurethane or polyolefin by spunbonding, meltblowing or calendering. Next, the ultramicrofibers are entangled with the reinforcement sheet by needle punching or spunlace to form the complex reinforced ultramicrofiber nonwoven fabric. The nonwoven is impregnated or coated with an elastomer resin composition, and then subjected to a coagulating process, a washing process, a drying process and a removing process to produce a semi-product leather. Finally, the semi-product leather is then processed to produce the artificial leather.

Abstract: Elastic artificial leather is disclosed. There are provided two polymers that include different crystallization degrees but similar fluidities. Fibers are made of the polymers. Non-woven cloth is made of the fibers. The non-woven cloth is soaked in water at 50 to 90° C. Thus, the fibers curl so that the non-woven cloth is elastic. The non-woven cloth is soaked in PU resin, washed and dried. Alternatively, the non-woven cloth includes, in addition to the fibers (“first type of fibers”), additional fibers (“second type of fibers”) that can be dissolved in water, alkali or solvent. The non-woven cloth is soaked in PU resin, washed and dried. The second type of fibers is removed from the non-woven cloth and the PU resin in order to leave elongated spaces. Thus, the artificial leather is elastic.

Abstract: A method for manufacturing an artificial leather reinforced with ultramicrofiber nonwoven fabric is disclosed. The method mainly includes the following steps. First, ultramicrofiber-forming fibers having an islands-in-sea type cross-sectional configuration are formed by blend spinning or conjugate spinning, and used as a major material of the nonwoven. Next, a porous reinforcement sheet of low compactness is formed from polyester, polyurethane or polyolefin by spunbonding, meltblowing or calendering. The reinforcement sheet has a thickness of about 0.01 to about 1.0 mm, has a weight per unit area of about 10 to about 200 g/m2 and has a mesh size of about 10 to about 150 mesh. Alternatively, twisted yam (100˜1000T/m) may be used to form the reinforcement sheet by a weaving or knitting machine. The ultramicrofibers are entangled with the reinforcement sheet by needle punching or spunlace to form the complex reinforced ultramicrofiber nonwoven fabric.