Sealing cover film

Abstract

The invention discloses a sealing cover film. The cover film comprises the components of, from outside to inside: a PET layer, an aluminum layer, an ethylene acrylic copolymer layer, a bimodal polyethylene layer, and a composite polyethylene layer. Compared with prior arts, the cover film provided by the invention has the characteristics that: (1) the film has good flavor maintaining performance, dampness inhibiting performance, and gas barrier performance; (2) the cover film is adapted to high-speed packaging; (3) the cover film is convenient to process, and can be subjected to fast product-change, such that the cover film can be adapted to productions with large and small orders; (4) the film has low cost and higher cost performance; and (5) the cover film has the unique internal layer design, and has a repeated opening and sealing function, such that rest contents can be well protected. The cover film provided by the invention can be widely applied in packaging of biscuits, jam, potato chips (bar), instant food, puffed food, snack food, and the like. The cover film is suitable for fast pace life of modern times, and assist in reducing the application of secondary packaging. In actural packaging processed, with the cover film, package yield can be effectively ensured, film material waste is low, production efficiency can be effectively improved, and cost can be reduced.

Description

technical field [0001] The invention belongs to packaging films, in particular to sealing lidding films. Background technique [0002] In recent years, with the development of the economy, the disposable income in people's hands has also increased year by year, the material life has been continuously enriched, and the food industry, which is closely related to people's lives, has also developed rapidly. During the "Twelfth Five-Year Plan" period, it was proposed that the main goal of the development of my country's food industry is to solve the problem of food convenience, focusing on the development of various convenience foods, such as primary and secondary convenience foods, Chinese and Western fast food, student meals, quick-frozen foods, and convenience semi-finished products Wait. Every step forward in the food industry places new demands on food packaging. [0003] Today, the accelerated pace of people's life determines that convenience will be an irreversible trend ...

AI Technical Summary

Problems solved by technology

But there are two problems, 1) the purchase price of the zipper itself is relatively high, which increases the packaging cost; 2) adding a zipper during the packaging process reduces the production efficiency

3) Zipper belt packaging is not suitable for the packaging of fragile foods such as potato chips, biscuits, and puffed foods

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