Two-needle tricot stitch weft insertion bidirectional elastic composite material and production process thereof

Abstract

The invention provides a production process of a two-needle tricot stitch bidirectional elastic composite material. The production process includes the steps: taking polyester DTYs (draw texturing yarns) with the specification of 15D-100D as warp yarn materials, taking DTYs with the specification of 15D-600D as weft yarn materials and weaving a two-needle tricot stitch weft insertion gray fabric in a single guide bar full-set threading manner by a two-needle tricot stitch disk of a full weft warp knitting machine; performing pre-shrinking and refining or overflow pre-shrinking and dyeing by an overflow dyeing machine; performing sizing and gluing. The looming warp density of warp yarns is 7.5-13 yarns/cm, and the looming weft density of weft yarns is 6-25 yarns/cm. The two-needle tricot stitch weft insertion bidirectional elastic composite material produced by the production process of the two-needle tricot stitch weft insertion bidirectional elastic composite material is elastic in both a warp direction and a weft direction, superior in performance and low in cost. The invention further relates to the two-needle tricot stitch weft insertion bidirectional elastic composite material.

Description

technical field [0001] The invention relates to the technical field of textiles, in particular to a two-needle warp flat interleaving weft bidirectional elastic composite material and a production process thereof. Background technique [0002] Known from textiles, there are two major directions of textile elasticity sources, tissue elasticity and material elasticity. The so-called tissue elasticity refers to the curve movement of yarns when weaving or weaving, the yarn or tissue in the finished product has the ability to deform when stressed and the tissue has the ability to return to its original shape after the external force is removed. The so-called yarn elasticity refers to the molecular structure of the yarn itself or the ability of the yarn structure to elongate under force and return to its original shape after the external force is removed. For example, elastic yarns such as spandex PTT and DTY stretched yarns are used as raw materials for textiles. Generally spea...

AI Technical Summary

Problems solved by technology

Their problem is: interlinings are generally relatively light, thin and soft products, so the warp and weft density of the fabric is relatively sparse, and the fabric tightness is relatively low. The original position, the appearance of the product is easily damaged

Moreover, the elasticity stored only by the bending deformation of the yarn produced by the DTY material during pre-shrinking is relatively small, and the creep deformation is obvious after stress, so the resistance to repeated stress and shape retention are poor.

Of course, the fabric yarn can choose nylon DTY with better elastic deformation ability, or DTY material made of PBT, or better DTY yarn made of PTT material, or even directly use spandex material, but their processing difficulty and material availability and cost performance are greatly restricted in the promotion of interlining products

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