Shredded composite packaging film in arbitrary direction and preparation method thereof

Abstract

The invention discloses a shredded composite packaging film in arbitrary direction, and the shredded composite packaging film is of a PET/PE.EAA/AL/PE/PE (poly(ethylene terephthalate)/polyethylene.ethylene acrylic acid/aluminum/polyethylene/polyethylene) composite structure compounded by three layers of base materials with different performances. The shredded composite packaging film comprises an outer layer, PET, a first protective layer, PE.EAA, a barrier layer, an AL foil, a second protective layer, PE, an inner layer and PE. The invention further discloses a preparation method of the shredded composite packaging film in arbitrary direction. The shredded composite packaging film has the advantages of good shelf effect, excellent barrier property, strong packaging tightness without a gap, and excellent protecting effect; the grade of the product can be improved; the quality guarantee period of a packaging content can be ensured; and the packaging integrity can be kept in transporting and moving processes.

Description

technical field [0001] The invention relates to a packaging film, in particular to a hand-tearable composite packaging film. Background technique [0002] In recent years, with the development of the economy and the improvement of people's living standards, the Chinese leisure food market is also developing rapidly. Various leisure foods such as puffed food, biscuits, dried fruits, cereals, coffee, and meat products are popular among many families. They are no longer the patent of children, and adults, especially young women, have become the mainstream consumer group. Nowadays, leisure food has become the necessities of life of more and more families. my country has a large population, and with the improvement of living standards, the field of food consumption will become a big gold mine that is about to blow out. China's snack food industry is bound to become the gold industry with the most development potential in the next ten years. There will also be a market with hug...

AI Technical Summary

Problems solved by technology

Adding tear openings and zigzag edge banding is often very unsatisfactory, and it limits the design of text, patterns, etc. on the packaging bag, affecting the appearance of the bag

Sometimes consumers need to use tools such as scissors to open; laser cutting often affects the barrier properties of packaging materials

In addition, the addition of tearing openings, zigzag edge banding, laser tangent, etc. also requires the addition of corresponding equipment and increased processes, which will bring difficulties to product quality control and increase production costs.

[0004] The traditional easy-to-tear printing composite film mostly adopts the structure of PT20μ / AL foil 7μ / PE30μ, or 50g single copper paper / PE30μ, because PT (cellophane) and 50g single copper paper are easy to tear and printable, making the whole composite The film has the characteristics of printing patterns and easy tearing, but the traditional structure of using cellophane and single copper paper as the fabric of the easy-tear printing composite film is relatively high, especially the manufacture of cellophane involves environmental protection issues and greater technical difficulties. At present, China's flexible packaging The industry relies on imports for high-quality cellophane, so the cost has been high for many years

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