Degradable paper-plastic packaging bag composite forming machine and composite forming method

Abstract

The invention relates to a degradable paper-plastic packaging bag composite forming machine and a composite forming method. The degradable paper-plastic packaging bag composite forming machine comprises supporting frames, conveying mechanisms, gluing mechanisms and feeding mechanisms, the supporting frames are symmetrically arranged in the front-back direction, the conveying mechanisms are arranged between the supporting frames, the gluing mechanisms are arranged between the supporting frames, and the feeding mechanisms are arranged on the upper gluing mechanism and the lower gluing mechanism. According to the degradable paper-plastic packaging bag composite forming machine and the composite forming method, the adopted feeding mechanism enables a glue solution conveyed each time to enter a glue solution box regularly and quantitatively, so that the phenomenon that raw material paper and a plastic layer cannot be completely bonded together when being bonded due to insufficient supply of the glue solution when the glue solution in the glue solution box is used for coating is avoided, meanwhile, cleaning groups are arranged on the glue coating mechanisms, the inner wall of the glue solution box can be cleaned in time when the glue solution box is not used, and the situation that the glue solution in the glue solution box is dried and solidified after a long time, so that the glue solution adheres to the glue solution box and seals a discharging port, and the glue solution box cannot be normally used next time is avoided.

Description

technical field [0001] The invention relates to the technical field of composite molding of paper-plastic packaging bags, in particular to a composite molding machine and composite molding method for degradable paper-plastic packaging bags. Background technique [0002] Traditional packaging bags are mostly made of plastic. With the enhancement of people's awareness of environmental protection, more and more paper packaging is used to reduce the amount of plastic and protect the environment. However, the packaging performance of pure paper packaging is poor, and some To solve this problem, the degradable paper-plastic packaging bag is also called three-in-one composite paper bag, which is made of plastic layer and raw paper through glue. combined. [0003] However, the following problems may be encountered during the composite molding process of degradable paper-plastic packaging bags: [0004] 1. When the traditional degradable paper-plastic packaging bag is glued to the ...

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Problems solved by technology

[0004] 1. When the traditional degradable paper-plastic packaging bag is glued to the raw material paper, the glue liquid is supplied to the glue tank at irregular intervals. Such irregular replenishment causes the coating roller to When the raw material paper is coated with glue, it is easy to have insufficient glue supply, and part of the raw paper is not coated with glue, so that the raw paper and the plastic layer cannot be completely bonded together when bonding;

[0005] 2. After the raw material paper coating is completed, some glue is likely to remain in the glue box. After a long time, the glue in the glue box is easy to dry, which will cause the glue to adhere to the glue box and fall down. The material port is sealed, resulting in the failure to use the glue tank normally next time

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