Spontaneously degradable fibers and goods made thereof

   
   

A spontaneously degradable fiber excellent in bulkiness, softness, stretchability and feeling, which comprises (A) a low heat-shrinkable fiber component comprising a high crystalline aliphatic polyester and (B) a high heat-shrinkable fiber component comprising an aliphatic polyester, e.g., a low crystalline or non-crystalline aliphatic polyester, and a block copolymer or a mixture the main component of which is an aliphatic polyester and which comprises a high-melting component and a low-melting component. Further, fibers excellent in self-crimpability or self-adhesion property and dividable fibers are obtained by suitably combining the fiber components (A) and (B) to form conjugated fibers or composite yarns.

Una fibra espontáneamente degradable excelente en volumen, suavidad, stretchability y sensación, que abarca (a) un componente heat-shrinkable bajo de la fibra que abarca un poliester alifático cristalino alto y (b) un alto componente heat-shrinkable de la fibra que abarca un poliester alifático, un poliester alifático e.g., cristalino o no cristalino bajo, y un copolímero del bloque o una mezcla el componente principal de la cual es un poliester alifático y de los cuales abarca un componente de fusión elevada y un componente bajo-que derrite. Además, las fibras excelentes en característica del uno mismo-crimpability o de la uno mismo-adherencia y las fibras dividable son obtenidas convenientemente combinando los componentes de la fibra (a) y (b) para formar fibras conjugadas o los hilados compuestos.

 
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