Method for producing heat insulation canvas fabric

Abstract

The invention relates to a method for producing a heat insulation canvas fabric, which comprises the steps: feeding yarns, clearing, narrowing, guiding out new cotton threads from a yarn guide by knitting needles, laying hemp threads or chemical fibers under needle beards, bending the yarns, and looping, to be specific, selecting the adjacent needles with 1 or 2 needle spacing to involve in knitting; clearing, laying new cotton threads, hemp threads or chemical fibers, and allowing 1 or 2 needles, not selected, between the adjacent needles to stop operating; reserving an old loop in each needle beard, and carrying out repeated knitting via N single weaves to obtain a gray canvas fabric, wherein cotton threads or hemp threads are knitted to odd ones of the N single weaves, chemical fibers are knitted to even ones of the N single weaves, and repeating is performed on every multiples of 3 of the N single weaves until the needle selecting step is reached. After the fabric is dehydrated andheat-set through a glue groove of heat-insulating coating glue, the releasability is small; the fabric surface is flat, defects are reduced, transverse and longitudinal structures are compact, the shrinkage rate is low, the production steps can be decreased, and the heat insulation effect and the stability are improved.

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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