Crimped yarn, method for manufacture thereof, and fiber structure

Abstract

The invention relates to a crimped yarn and a fiber structure. The crimped yarn is characterized in that: a multifilament yarn composed of a synthetic fiber is crimped to obtain the crimped yarn; the synthetic fiber is composed of an aliphatic polyester resin (A) and a thermoplastic polyamide resin (B); the ratio of the exposed surface area of the aliphatic polyester resin (A) to the surface area of the fiber is below 5%. The fiber structure is characterized in that at least part of the fiber structure comprises the crimped yarn. The invention also relates to the crimped yarn and the fiber structure. The crimped yarn is composed of a polymer alloy synthetic fiber or core-sheath-type composite fiber. The polymer alloy synthetic fiber is composed of the aliphatic polyester resin (A) and the thermoplastic polyamide resin (B). The core component of the core-sheath-type composite fiber is composed of the aliphatic polyester resin (A) or a polymer alloy composed of the aliphatic polyester resin (A) and the thermoplastic polyamide resin (B). The sheath component is composed of the thermoplastic polyamide resin (B). The fiber structure is characterized in that at least part of the fiber structure comprises the crimped yarn.

Description

technical field [0001] The present invention relates to a crimped yarn composed of a synthetic fiber composed of an aliphatic polyester resin and a thermoplastic polyamide resin, the ratio of the exposed area of ​​the aliphatic polyester resin to the fiber surface area being extremely small. Background technique [0002] Recently, with the increasing awareness of environmental protection on a global scale, the development of fiber raw materials that can be decomposed in the natural environment is urgently required. For example, existing general-purpose plastics use petroleum resources as the main raw material, so the depletion of petroleum resources and global warming caused by the massive consumption of petroleum resources have been raised as serious problems. [0003] Therefore, research and development of various plastics such as aliphatic polyesters and fibers have been actively carried out in recent years. Among them, fibers using biodegradable plastics, which are plas...

AI Technical Summary

Problems solved by technology

However, in applications where strong external force is intermittently applied, such as carpets, the interface is likely to peel off, which easily causes changes in appearance

In addition, although Patent Document 3 discloses a crimped elastic yarn (false-twisted processed yarn) formed of the conjugate fiber, the core-sheath interface is more likely to be peeled off in the crimped elastic yarn composed of the conjugate fiber than the uncrimped elastic yarn.

In addition, the detachment resistance tends to deteriorate with the passage of time of the aliphatic polyester, and the conjugate fiber in which polyamide is arranged as a sheath component has excellent abrasion resistance, but the detachment resistance is insufficient and the product appearance tends to change. Defects

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