Preparation technology of paper-plastic composite woven bag

Abstract

The invention relates to a preparation technology of a paper-plastic composite woven bag. A bottom plate, a supporting frame and a composite device are included, the supporting frame is installed at the upper end of the bottom plate, the section of the supporting frame is of a U-shaped structure, and the composite device is installed in the supporting frame. The technology can solve the problems that when existing equipment performs gluing processing on a composite woven bag, the coating effect of a glue solution is poor, smearing is not uniform, a gap exists between bonded kraft paper and thewoven bag, the subsequent using effect of the composite woven bag is affected, when the existing equipment processes the composite woven bag, generally, the kraft paper and the woven bag cannot be effectively bonded and composited, so that the bonding effect between the kraft paper and the woven bag is poor, bonding is not tight, the kraft paper and the woven bag are prone to falling off and thelike.

Description

technical field [0001] The invention relates to the field of composite woven bag processing, in particular to a preparation process of a paper-plastic composite woven bag. Background technique [0002] Paper-plastic composite woven bag is a kind of packaging bag widely used for packaging various items such as sugar, cement, fertilizer, chemical products and PVC powder. It is usually composed of kraft paper surface layer and plastic woven cloth inner layer. Among them, the plastic woven cloth is made of polypropylene or polyethylene as the main raw material, and the flat yarn is produced by a wire drawing machine, and the flat yarn is woven by a circular loom. The production process of paper-plastic composite plastic woven bags is to use molten special polypropylene and polyethylene coating materials to compound plastic woven cloth and kraft paper together. [0003] At present, when the existing paper-plastic composite woven bags are prepared and processed, the following def...

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Problems solved by technology

[0005] The present invention can solve the problem of poor coating effect and uneven application of glue when the existing equipment is applying glue to the composite woven bag, so that there is a gap between the bonded kraft paper and the woven bag, which affects the quality of the composite woven bag. Subsequent use effect, and the existing equipment is usually not able to effectively bond the kraft paper and the woven bag when processing the composite woven bag, so that the bonding effect between the kraft paper and the woven bag is poor and the bonding is not tight , easy to fall off between the kraft paper and the woven bag and other problems

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