| 摘要 |
PURPOSE:An entangled nonwoven fabric which is composed of specific shrinkable polyester fibers and nonshrinkable polyester fibers is allowed to shrink in a prescribed amount, crystallized, impregnated with an elastic polymer, coagulated, then napped to give the titled fibers sheet. CONSTITUTION:A high-shrinking fiber (A) of undrawn polyethylene terephthalate polymer which has been made by spinning at 2,500-4,100m/min, and has at least 20% shrinkage in hot water, and less than 20% crystallinity, is mixed with a non-shrinking fiber (B) of less than 10% shrinkage and 20% crystallinity, at weight ratio of 90/10-10/90, and entangled to each other to give an entangle nonwoven fabric. The fabric is treated with hot water to effect 20-75% area shrinkage and simultaneously heat-treated so that the fiber A becomes 30% in its crystallinity to give a fibrous sheet of 1+ or -0.1mm thickness and 100-170 deg. resilient angle. The sheet is impregnated with polyurethane, coagulated, when needed, napped or coated with a polymer layer for finishing on one surface to give a fiber sheet of leather-like touch.
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