Low-volatility carton material and preparation method thereof
By applying modified polylactic acid and nano-silica composites, the problem of weak bonding between fibers in biomass carton materials has been solved, the mechanical strength and structural stability of the carton have been improved, and high-end packaging needs have been met.
CN120759153AInactive Publication Date: 2025-10-10苏州群鑫纸制品科技有限公司
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Patent Information
- Application Number
- CN202511191094.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2025-10-10
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Technical Problem
Existing biomass carton materials have weak inter-fiber bonding, insufficient structural stability, and mechanical strength that cannot meet high-end packaging requirements.
Method used
Modified polylactic acid and nano-silica composites were used to prepare modified epoxy chain extenders through suspension polymerization. Pulp suspension was prepared by combining wheat straw and bagasse. Methyl cellulose was added and then papermaking and drying were carried out. Finally, low-volatile carton materials were obtained through hot pressing.
Benefits of technology
It improves the mechanical strength and inter-fiber bonding force of the carton material and enhances the structural stability of the material.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of packaging materials, and discloses a low-volatility carton material and a preparation method thereof. The preparation method comprises the following steps: carrying out melt blending on a modified epoxy chain extender and polylactic acid to obtain modified polylactic acid, mixing the modified polylactic acid with nano-silica to obtain a modified polylactic acid nano-composite, adding methyl cellulose and the modified polylactic acid nano-composite into a paper pulp suspension, carrying out stirring and mixing, carrying out papermaking and drying, and carrying out granulation and granulation to obtain the modified polylactic acid paper. And performing a hot pressing process to obtain the low-volatility material for the carton. The modified epoxy chain extender improves the molecular weight of the polylactic acid; a bicyclic aromatic structure of naphthyl can improve the rigidity of a chain segment, so that the mechanical property of polylactic acid is improved; silicon dioxide is connected with a polylactic acid molecular chain by a silane group through a coupling effect, so that the mechanical property is further improved; nitrogen atoms in the pyrrole group and the imidazole group enhance the hydrogen-bond interaction between the polylactic acid and the paper pulp fiber material, so that the binding force between fibers is improved; through the beneficial effects, the mechanical strength of the material for the carton is cooperatively improved.
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