High-performance corrugated carton with waterproof and antibacterial functions and preparation process thereof

By coating the surface of corrugated cardboard with a modified graphene oxide barrier coating and an aminated nanoporous silica-supported titanium-doped carbon dot composite antibacterial coating, the problems of bacterial growth and mechanical property degradation of corrugated cardboard under high temperature and high humidity conditions are solved, achieving efficient waterproofing, antibacterial properties and improved mechanical strength.

CN119754096BActive Publication Date: 2025-12-09WUXI YUCHENG PACKAGING MATERIALS CO LTD
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Patent Information

Application Number
CN202411735503.3
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-29
Publication Date
2025-12-09
Estimated Expiration
2044-11-29

AI Technical Summary

Technical Problem

Existing corrugated cardboard is prone to bacterial growth in high temperature and high humidity environments, and conventional waterproof coatings cannot effectively prevent the decline in mechanical properties caused by moisture.

Method used

A barrier-reinforcing coating and a composite antibacterial coating are applied to the surface of corrugated cardboard. The barrier-reinforcing coating is made of modified graphene oxide, and the composite antibacterial coating is composed of aminated nanoporous silica loaded with titanium-doped carbon dots. The antibacterial effect is adaptively adjusted.

Benefits of technology

It improves the waterproof and antibacterial properties of corrugated cardboard, especially enhancing the antibacterial effect in high temperature and high humidity environments, extending service life and improving mechanical strength.

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Abstract

The application discloses a high-performance corrugated carton with waterproof and antibacterial functions and a preparation process thereof, and the process comprises the following steps: S1, providing a corrugated paperboard substrate; S2, coating a barrier-enhanced coating liquid on the inner and outer surfaces of the corrugated paperboard substrate respectively, and forming a barrier-enhanced coating layer after solidification; S3, coating a composite antibacterial coating liquid, and forming a composite antibacterial coating layer after solidification to obtain a composite corrugated paperboard; and S4, using the composite corrugated paperboard to make a corrugated carton. The composite antibacterial coating layer can improve the waterproof performance of the composite corrugated paperboard and endow the composite corrugated paperboard with excellent antibacterial performance. Through cooperation of the barrier-enhanced coating layer and the composite antibacterial coating layer and with the excellent barrier effect of the barrier-enhanced coating layer, the waterproof performance of the composite corrugated paperboard can be further improved while avoiding the risk that active oxygen brought by the composite antibacterial coating layer may damage the performance of the corrugated paperboard substrate, and the mechanical strength of the composite corrugated paperboard can be improved, so that the service life of the composite corrugated paperboard can be ensured.
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