Super-elastic non-hemming denim fabric and preparation method thereof

Abstract

The invention discloses a super-elastic non-hemming denim fabric and a preparation method thereof, and belongs to the technical field of denim fabric weaving. The fabric comprises a ground weave and two edge weaves, wherein the ground weave is a twill weave; the fabric is characterized in that the two edge weaves are distributed on the left and right outer sides of the ground weave in a mirror symmetry manner; each edge weave comprises two circulating units, namely a plain weave unit and a twill weave unit; and the weave structure of each edge weave sequentially comprises the plain weave unit circulated for 6-12 times, the twill weave unit circulated for 1 time, the plain weave unit circulated for 12-16 times, the twill weave unit circulated for 1 time and the plain weave unit circulated for 14-20 times from the ground weave to the outside in the weft direction. The preparation method comprises the steps of drawing-in and weaving. According to the super-elastic non-hemming denim fabric, the hemming problem of a weft elastic denim fabric can be solved, and the elastic elongation rate and the elastic recovery rate of the denim fabric obtained through the preparation method are relatively high.

Description

technical field [0001] A super-elastic non-curling denim fabric and a preparation method thereof belong to the technical field of denim fabric weaving. Background technique [0002] Traditional denim fabric is a thicker yarn-dyed warp-faced cotton twill. Elastic denim fabric is made by designing the warp yarn or / and weft yarn as elastic yarn and weaving it. It is elastic and fits the body shape, and the market sales are good. The most common stretch denim fabrics are weft stretch and four-way stretch according to the direction of stretch. The weft elastic type is to design the weft yarn as an elastic yarn and weave it into an elastic denim fabric with elasticity in the weft direction. The four-way stretch type is to weave the warp and weft yarns with elastic yarns at the same time to obtain four-way stretch elastic denim fabrics. [0003] The applicant found in research that the existing elastic denim fabric has the following problems: [0004] First, the existing elasti...

AI Technical Summary

Problems solved by technology

When the existing technology designs an elastic elongation of 90% or more, it is difficult for elastic recovery and elastic growth to meet the standard requirements of downstream customers

[0005] Second, the existing elastic denim fabrics are prone to serious curling problems when making high-elastic fabrics

The applicant found in the research that: if the fabric obtained from weaving has curling problems, the denim fabric needs to be singeed → shaped → shrinkproofed in the subsequent finishing process. And after high-temperature treatment, the left and right curling parts of the fabric are shaped, forming folded curling defects that are difficult to unfold by soup ironing

This hemming defect is difficult to correct in mass production

For fabrics with curling defects, downstream customers will directly refuse to purchase. Existing downstream customers mostly use jeans material cutting machines for high-speed automatic cutting of denim fabrics. The speed can reach 10 m / s, and fabrics with curling defects are difficult to apply. Downstream high-speed automatic cutting equipment

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