Moisture-proof oxygen-barrier packaging paper and preparation method thereof

Abstract

The invention relates to the technical field of packaging materials, and particularly discloses moisture-proof oxygen-barrier packaging paper which comprises a packaging paper base layer. The barrier layer is arranged on one side of the packaging paper base layer and is formed by coating and curing the barrier coating; the barrier coating comprises the following substances in parts by weight: 3-8 parts of polylactic acid; 45 to 50 parts of a hexafluoroisopropanol solution; and 1-2 parts of a silane coupling agent. The preparation method comprises the following preparation steps: S1, preparing the barrier layer; s2, preparing a damp-proof layer; and S3, drying treatment. The polylactic acid film is selected as the barrier layer to coat and modify the packaging paper base layer, a good barrier effect can be formed on the packaging paper base layer through the polylactic acid film, and the moisture-proof and oxygen-barrier properties of the packaging paper base layer are further improved.

Description

technical field [0001] The invention belongs to the technical field of packaging materials, and in particular relates to a moisture-proof and oxygen-barrier packaging paper and a preparation method thereof. Background technique [0002] Paper packaging materials have the characteristics of abundant resources, low price and easy degradation. After paper products decay, they can be recycled for paper regeneration. At the same time, it also reduces air pollution and purifies the environment. Compared with plastic, metal, glass and other packaging materials, paper packaging materials are one of the most promising green packaging materials. [0003] With the further optimization of paper packaging materials, the technical requirements for improving its barrier properties are increasing day by day. Since paper itself is a heterogeneous material, the hydroxyl groups in its cellulose basic units make the cellulose itself hydrophilic. In addition, the fiber network The porous struct...

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defects of poor moisture-proof and oxygen-barrier properties of existing paper packaging materials, the present invention provides a moisture-proof and oxygen-barrier packaging paper and its preparation method, adopting the following technical scheme:

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