Degradable plastic packaging tube and method for preparing the same

By combining materials such as polylactic acid, ethylene methyl acrylate, and polyolefin elastomers with chitin nanofibers that have undergone esterification and deacetylation modification, a biodegradable plastic packaging tube with a 'rigid-tough-elastic' triple network structure was prepared. This solved the problems of high brittleness, poor heat resistance, and short service life of existing polylactic acid-based tubes, and achieved improved mechanical properties and extended service life of the material.

CN120329699BActive Publication Date: 2026-06-12GUANGZHOU ZHENGSHENG PLASTIC PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU ZHENGSHENG PLASTIC PROD CO LTD
Filing Date
2025-05-26
Publication Date
2026-06-12

AI Technical Summary

⚠Technical Problem

Existing polylactic acid-based biodegradable packaging plastic tubes suffer from problems such as high brittleness, poor heat resistance, and short service life.

⚗Method used

A combination of materials such as polylactic acid, ethylene-methyl acrylate, polyolefin elastomer, double-modified chitin nanofibers, and nano-titanium dioxide is used to prepare biodegradable plastic packaging tubes through esterification and deacetylation modification, forming a 'rigid-tough-elastic' triple network structure to enhance the rigidity, toughness, and heat resistance of the material.

🎯Benefits of technology

The prepared biodegradable plastic packaging tubes have good physical properties and extrusion processability, balanced rigidity and impact resistance, excellent anti-aging properties and long service life, and are suitable for food, cosmetics, medicine, chemical and other fields.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a degradable plastic packaging tube and a preparation method thereof, and relates to the technical field of packaging materials.The degradable plastic packaging tube comprises the following raw materials in parts by weight: 50-60 parts of polylactic acid, 20-30 parts of ethylene-methyl acrylate, 10-15 parts of polyolefin elastomer, 3-5 parts of maleic anhydride grafted polylactic acid, 5-10 parts of double-modified chitin nanofiber, 1-2 parts of nano titanium dioxide, 0.5-1 part of calcium stearate and 1-3 parts of an additive.The polylactic acid, the ethylene-methyl acrylate, the polyolefin elastomer and the esterified and deacetylated double-modified chitin nanofiber are blended, the ethylene-methyl acrylate provides flexibility, the polyolefin elastomer provides elasticity, and the chitin nanofiber provides rigidity, so that a "rigid-flexible-elastic" triple network is realized, and the manufactured packaging tube has balanced rigidity and impact resistance, excellent anti-aging performance and a long service life.
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