Paper-aluminum-plastic composite easy-to-tear packaging film

Abstract

The invention discloses a paper-aluminum-plastic composite easy-to-tear packaging film, which comprises a base paper layer, an aluminum foil layer and a thin film layer that are sequentially attached, wherein a bonding resin film (LDPE and EMAA) layer is arranged between the paper layer and the aluminum foil layer; a water-based heat seal adhesive layer is attached to the surface of an inner heat seal film layer, and a water-based priming coating is attached on the bottom surface of the inner heat seal film layer. The inner layer is formed by combining a special inner seal film with water-based heat seal adhesive, so that a brand-new easy-to-tear packaging film is created, the sealing strength is maintained a constant and uniform range, the easy-to-tear property, cleanness and completeness of a tearing opening can be guaranteed, and the paper-aluminum-plastic composite easy-to-tear packaging film is a new creation in the field of packaging medical assisted supplies.

Description

technical field [0001] The invention relates to a paper-aluminum-plastic composite easy-tear packaging film, which belongs to the technical field of packaging materials. Background technique [0002] Paper-aluminum-plastic composite film packaging material is a commonly used method in the production of industry, food packaging, and medical packaging. It is a multi-layer packaging that combines pure aluminum foil and film in the base paper layer structure and combines the respective advantages of the three materials. Material is a widely used packaging material. [0003] At present, most of them use the printing ink layer on the surface of paper to achieve commercialization. The printed ink usually represents the promotional pattern of the product. The existing technology uses wet lamination or extrusion lamination to compound paper and aluminum foil, and the back adopts dry lamination and heat-sealing blow molding. Film composite, long process, large amount of materials use...

AI Technical Summary

Problems solved by technology

[0003] At present, most of them use the printing ink layer on the surface of paper to achieve commercialization. The printed ink usually represents the promotional pattern of the product. The existing technology uses wet lamination or extrusion lamination to compound paper and aluminum foil, and the back adopts dry lamination and heat-sealing blow molding. Film composite, long process, large amount of materials used, high packaging cost, poor packaging effect, unstable tearing effect, large fluctuations in heat sealing strength, easy to contaminate the contents

[0004] In addition, a large amount of solvents are used in the dry compounding process to pollute the environment. At the same time, the uniformity of the material is poor, and many processing equipment are involved, even outsourcing

The film thickness of the inner sealing layer of the dry lamination method is often too high, which is also a waste of the entire resource and an increase in cost

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