Biopolymer food packaging bag film, preparation process thereof and production equipment

Abstract

The invention belongs to the technical field of food packaging bag films and discloses a biopolymer food packaging bag film. The biopolymer food packaging bag film is technically characterized by comprising a chitin lining, a starch / LDPE blending layer, a PLA waterproof layer and an antibacterial coating. The invention also discloses a process for producing the biopolymer food packaging bag film.The process is technically characterized by comprising the steps of performing co-extrusion lamination for film forming, cutting film bubbles into two layers of films with a material cutter, forming abacteriostatic coating, cutting off leftover materials on the two sides to obtain a finished film, and winding the finished film. The invention also discloses production equipment required by the preparation process of the biopolymer food packaging bag film. The equipment is technically characterized by comprising a three-layer co-extrusion film blowing machine, a winding machine, a soaking tank,a drying oven and a material cutting roller, wherein the soaking tank, the drying oven and the material cutting roller are sequentially arranged. The effects are achieved that the degradable film issynthesized by adopting various biopolymer materials, raw materials are taken from plants, animals and microorganisms, few artificial compounds are adopted, and therefore the construction of a resource-saving and environment-friendly society is facilitated.

Description

technical field [0001] The invention relates to the technical field of food packaging film, in particular to biopolymer food packaging film and its preparation process and production equipment. Background technique [0002] Food packaging bags refer to film containers that can be in direct contact with food and are used to hold and protect food. According to their application range, they can be divided into: ordinary food packaging bags, vacuum food packaging bags, inflatable food packaging bags, boiled food packaging bags , Retort food packaging bags and functional food packaging bags. The raw materials used to produce food packaging bags are various films, and the performance of food packaging bags is often directly determined by the components and molding quality of the films. [0003] The Chinese patent with the publication number CN106947155A discloses a degradable food packaging bag, which consists of 20-45 parts of low-density polyethylene, 25-40 parts of metallocene...

AI Technical Summary

Problems solved by technology

However, in the actual production process, most of its production raw materials rely on artificial synthesis, and it needs to consume more resources and energy during preparation, which is not conducive to the construction of a resource-saving society.

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