A method for preparing an antibacterial functional composite having a stable structure, an impregnation liquid, an impregnated paper, and a veneer

By constructing a gelatin-chitosan composite network through electrostatic re-coagulation and enzymatic covalent cross-linking, the problem of easy decomposition of natural antibacterial active components during high-temperature processing is solved, achieving stable immobilization and long-lasting antibacterial effect, which is suitable for upgrading the antibacterial function of artificial decorative panels.

CN122105907APending Publication Date: 2026-05-29ZHEJIANG SHENGHUA YUNFENG GREENEO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG SHENGHUA YUNFENG GREENEO
Filing Date
2026-03-26
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing antibacterial technologies struggle to achieve stable immobilization of natural antibacterial active components during board processing. These components are prone to decomposition or migration during high-temperature processing, leading to functional failure. Furthermore, existing processes are complex and costly, making it difficult to achieve a balance between long-term effectiveness, safety, and stability.

Method used

A gelatin-chitosan composite network structure was constructed by combining electrostatic recombination with enzymatic covalent crosslinking. Through electrostatic interactions and enzymatic covalent bonds, active ingredients such as tea polyphenols were firmly encapsulated within the carrier network, forming a stable antibacterial functional complex.

Benefits of technology

It achieves the stability and long-lasting effect of natural antibacterial ingredients during high-temperature processing, ensuring the continuous existence of antibacterial function. Moreover, the process is gentle and the raw materials are safe, which can be seamlessly integrated with existing production processes and reduce the cost of technology upgrades.

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Abstract

The present application relates to a kind of preparation method of antibacterial functional complex with stable structure, impregnation liquid, impregnated paper and veneer, belong to antibacterial functional material and artificial veneer technical field.The core of the present application is to prepare a kind of high-temperature-resistant antibacterial functional complex, its method is as follows: tea polyphenol, liquorice extract and citric acid are compounded, then mixed with gelatin solution, then compounded with chitosan under pH 5.0~6.0 by electrostatic interaction, finally crosslinked by glutamine transaminase catalysis, form "electrostatic-covalent" dual stable network structure.The structure effectively encapsulates natural antibacterial active ingredient, so that it can withstand the high-temperature process of impregnation drying and hot pressing, effectively avoid decomposition.The complex is added as additive in impregnated resin, antibacterial impregnated paper and veneer can be prepared.The product has efficient, long-acting, safe antibacterial function, and the preparation process is compatible with existing impregnated paper production line, easy to realize industrial production.
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