| 摘要 |
PURPOSE:To provide the titled fiber outstanding in crimp uniformity developed, bulkiness, soft touch and uniform dyeability, having such constitution that a plural of acrylic polymer which differ in copolymer composition with one another form a multilayer conjugate structure in specific conditions. CONSTITUTION:The objective fiber having such constitution that one polymer component among a plural of acrylic polymer which differ in copolymer composition with one another is divided in the other polymer component into one or more layers, forming part of the fiber surface and also forming asymmetrical continuous structure in the fiber axis direction. Shrinkage when crimped is 7-15%, and crimping stress is 5-20mg/d. This fiber can be obtained by the following process; spinning stock solutions A and B corresponding to respective component polymers are divided into >=3 layers in terms of the theoretical layer number in a single filament [=layer number of spinning stock solution flow to be divided/K.(hole number of spinneret)<1/2>; K is constant depending on spinneret configuration] using a multilayer-forming device 2, followed by delivery through a spinneret 4 via a filter 3 and by passing through a crimping device 5 and/or re-stretching device 6.
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