| 摘要 |
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/m<2 >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. 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. The semi-product leather is then treated with a release paper transferring process, a laminating process or an embossing process to produce a artificial leather with the textures of a genuine leather. Alternatively, the semi-product leather may be treated with a grinding process and a dying process to produce a suede-like artificial leather. The artificial leather obtained by the aforementioned methods can solve the problem due to the difference between the longitudinal elongation and the transverse elongation.
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