Layered structure

By adopting a layered structure of paper base layer and water-soluble polymer barrier layer in food packaging, the problem of difficult recycling of traditional packaging materials is solved, biodegradable and high barrier properties are achieved, and resource recycling and environmentally friendly packaging are ensured. Solution.

CN119156476APending Publication Date: 2024-12-17CAMM SOLUTIONS (SPAIN) R&D SLU
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Patent Information

Application Number
CN202380038360.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2022-05-04
Filing Date
2023-05-04
Publication Date
2024-12-17

AI Technical Summary

Technical Problem

Existing sensitive food packaging materials are difficult to recycle through traditional paper, and multi-layer chemically similar materials are difficult to reversely recycle, resulting in waste of resources.

Method used

Using a layered structure consisting of paper base and water-soluble polymer barrier layer, the barrier layer contains salt and other additives, designed to be biodegradable and compostable, capable of being integrated in the paper recycling cycle and through plasma coating and organic- Inorganic hybrid coating enhances barrier performance.

Benefits of technology

The recyclability and high barrier properties of the layered structure are realized, the recycling of resources is ensured, environmental pollution is reduced, and the mechanical performance and production efficiency of packaging are improved.

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Abstract

The layered structure includes a paper-based layer and a barrier layer. The barrier layer includes a water-soluble polymer and a salt. Layered structures may be produced by applying a barrier layer as a foil-like element onto a paper-based layer.
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