A kind of production method of heat insulating canvas fabric

Abstract

The invention relates to a production method of a heat-insulating canvas fabric. The production method is as follows: yarn feeding, loop withdrawal, needle narrowing, knitting needles leading out new cotton thread, hemp thread or chemical fiber from the yarn guide and inserting it under the needle hook, bending the yarn, forming The adjacent knitting needles with an interval of 1 or 2 needles are selected to participate in knitting. The circle is withdrawn and new cotton thread, hemp thread or chemical fiber is padded. The 1 or 2 needles between the adjacent knitting needles are not selected and quit the work, so that the old The coil is kept in the needle hook, and the canvas blank is obtained by circular weaving with N-way single-way weaves. The odd number of N-way single-way weaves is woven with cotton thread or hemp thread, and the even number of N-way single-way weaves is woven with chemical fiber. N-way single-way Repeat every 3 multiples of the tissue to the needle selection step, pass through the glue tank of the heat-insulating coating glue, and then dehydrate and heat-set, with less dispersibility, smooth fabric surface, lower defect rate, tight horizontal and vertical structure, and small shrinkage rate , can reduce the production process, improve the heat insulation effect and stability.

Description

technical field [0001] The invention relates to a production method of heat-insulating canvas fabric, which belongs to the technical field of canvas fabric. Background technique [0002] Canvas is a kind of thick cotton or hemp fabric, generally using plain weave or a small amount of twill weave, and the warp and weft yarns are made of multi-strand yarns. It is usually divided into two categories: coarse canvas and fine canvas. Coarse canvas is generally used in automobiles. In transportation, open-air covering and other fields, after dyeing or printing fine canvas, it can be used as luggage fabric, handbags, backpacks, tablecloths, etc. When the canvas material is used for heat preservation or heat shielding occasions, the existing canvas fabric only adopts the warp and weft intersecting longitudinal structure, which requires additional sewing of heat insulation or heat preservation materials, which not only consumes time and effort, but also increases the cost of the fabri...

AI Technical Summary

Problems solved by technology

When the canvas material is used for heat preservation or heat shielding occasions, the existing canvas fabric only adopts the warp and weft intersecting longitudinal structure, which requires additional sewing of heat insulation or heat preservation materials, which not only consumes time and effort, but also increases the cost of the fabric, resulting in cumbersome production by the manufacturer and the insulation The bonding degree between the thermal material and the canvas fabric surface material is not high, and it is easy to be damaged during long-term use, which affects the bending performance of the canvas fabric and makes the overall storage difficult

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