Biopolymer food packaging bag film and its preparation process and production equipment

Abstract

The invention belongs to the technical field of food packaging bag films, and discloses a biopolymer food packaging film. The key points of the technical solution include a chitin lining, a starch / LDPE blend layer, a PLA waterproof layer and an antibacterial coating; A process for producing the above-mentioned biopolymer food packaging film is disclosed. The main points of the technical scheme include co-extrusion composite film formation, cutting the film bubble into two layers of film with a cutting knife, and forming an antibacterial coating. Cut off the side materials on both sides, obtain the finished film and wind it up; disclose a kind of production equipment required for the above-mentioned biopolymer food packaging bag film preparation process, and the key points of the technical scheme include a three-layer co-extrusion film blowing machine and a winder , which also includes infiltration tanks, ovens and cutting rollers arranged in sequence, with a variety of biopolymer materials to synthesize degradable films, raw materials from plants, animals and microorganisms, less artificial synthetics, which is conducive to resource conservation and environmental protection The effect of building a friendly society.

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.

Images