Automatic bottom sealing method for bottom sealing of wide threads used for woven bag

Abstract

The invention discloses an automatic bottom sealing method for bottom sealing of wide threads used for a woven bag. The automatic bottom sealing method comprises the following steps that a front wall and a rear wall are separated through a vacuum pump; the bottom of the front wall is cut away from a left side seam and a right side seam through a scraper; the cut portion of the front wall is folded forwards along a first fold line parallel to the width direction of the woven bag so as to form a first folding part; hot melt glue is smeared on the front wall; the bottom of the rear wall and the first folding part are folded forwards along a second fold line parallel to the width direction of the woven bag; and the folded portion of the rear wall and the front wall are pressed by a pressure roller through hot melt glue, so that a bottom wall is formed. According to the woven bag produced through the bottom sealing method for the wide-thread woven bag, the bottom wall of the woven bag is formed by folding the front wall and the rear wall, the bearing force of the bottom wall does not directly act on the junction of the rear wall and the front wall anymore, that is the junction of the rear wall and the front wall is located on the lateral portion of the front wall instead of being located on the bottom wall, and therefore the structure is firmer, and attractiveness and elegance are achieved.

Description

technical field [0001] The invention relates to the field of textiles, in particular to an automatic back-sealing method for back-sealing wide filaments used in woven bags. Background technique [0002] Woven bag, also known as snakeskin bag, is a kind of plastic, and its raw materials are generally various chemical plastic materials such as polyethylene and polypropylene. Woven bags can be widely used in packaging fields such as industrial and agricultural product packaging bags, food packaging bags, tourism and transportation industries. [0003] According to the standard of the silk of traditional preparation woven bag, its width is respectively 2.08, 2.5, 2.78, 3.12 millimeters, but the structure of the woven bag that adopts the silk of these widths to make is not strong enough. Therefore those skilled in the art just envisage adopting wide wire to prepare woven bag. Wide wire means that the width of the wire is between 4-6 mm. The processing technology of traditional...

AI Technical Summary

Problems solved by technology

The traditional back sealing method can seal the back of fine wire woven bags, but the traditional back sealing method is not suitable for wide wire woven bags

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