A kind of hemp-like multiple multi-differential composite short fiber and its manufacturing method

Abstract

The invention relates to a hemp-like multi-heterogeneous composite staple fiber and a manufacturing method thereof. Including: high-viscosity polyester chips with a viscosity of 0.90-0.95dl / g, 40%-60% by weight; low-viscosity polyester chips with a viscosity of 0.42-0.45dl / g, 40%-60% by weight; of which high-viscosity polyester chips Ester chips are composed of high-shrinkage chips and conventional polyester chips. The expansion and shrinkage of high-shrinkage chips and conventional polyester chips, that is, the dry shrinkage ratio, is between 2:1 and 7:1. The reason why the present invention can produce many and dense permanent self-crimping twists is due to the viscosity difference of about 0.48~0.50 dl / g between the high-viscosity compound component and the low-viscosity polyester, which is sufficient to provide self-crimping. Powerful power; in addition, the presence of high shrinkage components can reduce the force required to form self-crimping, so that multiple and dense self-crimping twists can be formed to meet the requirements of super-like hemp style.

Description

technical field [0001] The invention relates to a production technology of polyester staple fiber in the field of textile materials, in particular to the manufacture of a novel multi-multi-differential composite staple fiber with a super-linen-like effect. Background technique [0002] The short fibers used in the linen-like fabrics that appear on the existing market are mostly made of single-component spinning and drawing. It is not achieved by the inherent self-curling twist mechanism of the fiber. Its main disadvantage is that it cannot form the very obvious concave-convex nodes and good drape required for linen-like fabrics, so the immediate effect of linen-like fabrics is poor, and the durability of the linen-like effect is poor. The cross-section of the existing hemp-like fabric mostly adopts a circular cross-section, so the moisture absorption and perspiration and air permeability are also relatively poor. [0003] From the analysis of the 200710191330.3 invention, ...

AI Technical Summary

Problems solved by technology

The linen-like fabric prepared by this method has certain functions of moisture absorption and perspiration and ventilation, and has good dyeing performance; but the uneven nodes of the linen-like fabric are not obvious, and the suspension is poor

[0005] So far, there has not been a staple fiber for permanent super-linen on the market. Its inherent multiple multi-different composite structure can produce many and dense permanent self-curling twists, thereby forming a very obvious twist required for linen. Concave-convex nodes; at the same time, it has good drapability, smoothness, breathability, moisture absorption and perspiration, etc., to achieve the effect of real linen imitation, which restricts the development of high-end clothing and home textile fabric products