Paper-based aluminum-plastic composite material and preparation method thereof

Abstract

The invention relates to paper-based aluminum-plastic composite material and a preparation method thereof, belongs to the technical field of composite paper production and solves the problems of poor aluminum layer smoothness, low brightness, pinholes on aluminum foil and short product shelf life of conventional paper-based aluminum-plastic composite material. The paper-based aluminum-plastic composite material consists of the following twelve layers of material in sequence: modified polyethylene 1, polyethylene 2, a printing ink layer, a plastic film, a directly coated aluminum layer, adhesive resin 6, paper, polyethylene 8, adhesive resin 9, aluminum foil, adhesive resin 11 and modified polyethylene 12. The invention also provides the preparation method for the material. The preparation method comprises the following steps of: preparing an aluminum laminated film; preparing aluminum laminated composite paper; preparing a half-finished product of paper; and compounding an outer PE layer, the half-finished product of paper, an interlayer, the aluminum foil and an inner PE layer which are piled up in sequence into the paper-based aluminum-plastic composite material. By the composite material and the preparation method, the directly coated aluminum layer and a PET film which are directly compounded between the paper and the printing oil layer, a printing surface of the material is endowed with metallic texture, and barrier properties of the material to oxygen and vapor are improved.

Description

technical field [0001] The invention belongs to the technical field of composite paper production, and in particular relates to a composite paper with gloss and barrier properties and a production process thereof. Background technique [0002] Paper-based aluminum-plastic composite materials are now widely used in liquid food aseptic packaging, which can give the packaging a certain shape, effectively prevent leakage, block oxygen, and block water vapor, so that the contents can be obtained for a long time without refrigeration. shelf life. Due to the limitations of the material, the decorative performance of this type of packaging is poor; and the thickness of the aluminum foil used is 6-7 microns, the barrier property of the product will be affected by the pinholes of the aluminum foil and the shelf life of the product will be shortened. Contents of the invention [0003] In order to solve the problem that the aluminum layer of the existing paper-based aluminum-plastic ...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the aluminum layer of the existing paper-based aluminum-plastic composite material has poor smoothness, low gloss, and pinholes on the aluminum foil, which affect the shelf life of the product, the present invention provides a paper-based aluminum-plastic composite material. The technical solution is as follows:

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