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Tearable spacer fabric

A technology of spacer fabrics and fabrics, applied in knitting, weft knitting, textiles and papermaking, etc., can solve the problem of difficult tearing of spacer fabrics, achieve good lateral extension and elasticity, and simple weaving process

Active Publication Date: 2020-10-02
SHANGHAI JIEYINGTU NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the spacer fabric in the prior art is difficult to tear, and to provide a tearable weft-knitted spacer fabric and its preparation method

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Tearable spacer fabric

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of the tearable weft-knitted spacer fabric is to weave two independent fabrics respectively by weft knitting technology, and at the same time, in the weaving process, the polyester monofilament with a fineness of 20D is used to connect the two fabrics in the vertical direction in a tuck mode , when weaving the opposite courses of two fabric parts, by replacing the high-strength polyester filaments with a breaking strength of 10N and a fineness of 75D with low-strength polyester filaments with a breaking strength of 1N and a fineness of 20D and controlling the distance between the two pieces The tucks in the opposite loops of the fabric form a tear line extending in the direction of the course, and when weaving the opposite courses of two fabrics, a loop located within the boundary of the fabric is woven with a low-strength yarn, and the loops on the left and right High-strength yarns and low-strength yarns are used to weave at the same time in the ...

Embodiment 2

[0044] Basically the same as Example 1, the difference is that when weaving the opposite courses of two fabric parts, only one tear line extending along the direction of the courses is formed, and the tearable weft-knitted spacer fabric obtained is used for automobile safety The airbag outer covering material, the explosive release simulation test of the airbag, when a collision of a certain intensity occurs, the airbag bursts out from the cover after a slight delay, and the weft-knitted spacer fabric can be torn under the expansion force of the airbag in many experiments. Under the action, it ruptures along the tear line, the initial rupture position is not completely consistent, and the airbag opens normally.

Embodiment 3

[0046] Basically the same as Example 2, the difference is that when weaving the opposite courses of two fabric parts, only one tear line extending along the wale direction is formed, and the tearable weft-knitted spacer fabric obtained is used in automobiles. The covering material outside the airbag, the explosive release simulation test of the airbag, when a collision of a certain intensity occurs, the airbag bursts out from the cover after a slight delay, and the weft-knitted spacer fabric can be torn under the expansion force of the airbag after many experiments. Under the action of the airbag, it ruptures along the tear line, and the initial rupture position is not completely consistent, and the airbag opens normally.

[0047] Comparing the explosive release test results in Example 1, Example 2 and Example 3, it can be seen that the two-way tearable spacer fabric is more conducive to the release of the airbag, because the crossing of the longitudinal and transverse tear lin...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to a tearable spacer fabric and a preparation method thereof. The tearable spacer fabric comprises at least one tear line arranged along the transverse or longitudinal directionof loops, wherein each tear line is composed of upper and lower tearable regions of opposing fabrics, both the upper and lower tearable regions are made by knitting yarns having breaking strength of < / =2 N, and the upper and lower tearable regions are in spacer-thread connection. The preparation method comprises: knitting two independent pieces of fabric through a weft-knitting technique, connecting the two pieces of fabric in the perpendicular direction through spacer threads in a tuck manner during knitting, forming tear lines extended along the transverse direction of the loops by replacingand controlling the different tucks, and / or acquiring the tearable weft-knitted spacer fabric by performing local yarn adding and controlling the different tucks to form the tear lines extended in the longitudinal direction of the tucks. The tearable weft-knitted spacer fabric has the advantages that the tearable regions of the tear lines are given good tearing convenience, the manufacture process is simple, and weaving cost is low.

Description

technical field [0001] The invention belongs to the technical field of spacer fabrics, and relates to a tearable weft-knitted spacer fabric and a preparation method thereof. Background technique [0002] The spacer fabric is a three-dimensional fabric with stable structure, which is composed of two separate fabrics, and the middle of the fabric is connected by a spacer wire. Spacer fabrics are widely used in home furnishing, medical care, automotive interiors, construction and other fields due to their many high-quality properties such as light weight, breathability, sound insulation and shock absorption, and compression resistance. [0003] Spacer fabrics are divided into warp-knitted spacer fabrics and weft-knitted spacer fabrics. At present, warp-knitted spacer fabrics have become mainstream in car interiors instead of sponges and foam materials, and can be used for roof linings, shockproof seat cushions, seat belts, and airbag accessories. etc., both decorative and func...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04B1/12D04B1/10
CPCD04B1/10D04B1/12
Inventor 刘燕平董珊珊刘伦贤
Owner SHANGHAI JIEYINGTU NEW MATERIAL TECH