A three-in-one composite paper bag manufacturing process

Abstract

The invention relates to a manufacturing process of a three-in-one composite paper bag. The manufacturing process of the three-in-one composite paper bag adopts the following composite paper bag manufacturing equipment. The composite paper bag manufacturing equipment includes a conveying and pressing device, a coating drying device and a cutting and bonding device; The conveying and laminating device described above has a hollow structure, a coating drying device is installed on the right side of the conveying and laminating device, and a cutting and bonding device is installed on the left side of the conveying and laminating device. The present invention can solve the problem that in the production process of the three-in-one composite paper bag of the existing equipment, kraft paper and non-woven fabric are usually combined and then directly coated with a film. There are gaps and air bubbles between the kraft paper and the non-woven fabric, resulting in gaps in the film coating process. It cannot be glued to the air bubbles, which reduces the quality of the composite bag, and the existing equipment usually cuts the composite paper and then glues it once to make a composite bag during the production process of the three-in-one composite paper bag , The two steps of separate processing lead to problems such as more equipment required for processing, long processing time, and low efficiency.

Description

technical field [0001] The invention relates to the field of composite bag manufacturing and processing, in particular to a manufacturing process of a three-in-one composite paper bag. Background technique [0002] The paper-plastic composite bag is made of plastic and kraft paper. Usually, the plastic layer is made of polypropylene (PP) or polyethylene (PE) flat wire woven fabric as the base material, and the kraft paper is made of refined composite kraft paper, which has high strength and waterproof Good performance and beautiful appearance. It is one of the most popular packaging materials and is widely used in plastic raw materials, cement, feed, chemical, fertilizer and other industries. [0003] At present, the existing three-in-one composite paper bag usually has the following defects in the production process: 1. In the production process of the three-in-one composite paper bag, the existing equipment usually directly performs coating treatment after compounding kra...

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Problems solved by technology

[0005] The present invention can solve the problem that in the production process of the three-in-one composite paper bag of the existing equipment, kraft paper and non-woven fabric are usually combined and then directly coated with a film. There are gaps and air bubbles between the kraft paper and the non-woven fabric, resulting in gaps in the film coating process. It cannot be glued to the air bubbles, which reduces the quality of the composite bag, and the existing equipment usually cuts the composite paper and then glues it once to make a composite bag during the production process of the three-in-one composite paper bag , Two steps of separate processing lead to many processing equipment required, long processing time, low efficiency and other problems

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