一种高阻隔的生物可降解膜及其制备方法和应用
By introducing a PGA layer into the PLA/PBAT composite film and performing co-extrusion, preheating, stretching and heat setting treatments to form a continuous orientation structure, the problems of insufficient mechanical properties and gas barrier properties of PLA/PBAT composite films in food packaging are solved, and a high-barrier biodegradable film is realized.
CN118876551BActive Publication Date: 2026-07-17SHENZHEN POLYTECHNIC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHENZHEN POLYTECHNIC
- Filing Date
- 2024-08-27
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing PLA/PBAT composite films have insufficient mechanical properties and gas barrier properties in food packaging, especially in achieving both high mechanical strength and excellent gas barrier properties.
Method used
Employing a multilayer structure of PLA, PGA, and PBAT layers, a continuous orientation structure is formed through co-extrusion, preheating, biaxial stretching, and heat setting, which enhances interlayer interaction and improves the mechanical and gas barrier properties of the membrane.
Benefits of technology
The PLA/PBAT composite film has achieved significant improvement in gas barrier properties while maintaining excellent mechanical properties, making it suitable for the food packaging industry.
✦ Generated by Eureka AI based on patent content.
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Figure CN118876551B_ABST
Abstract
本发明公开了一种高阻隔的生物可降解膜及其制备方法和应用，属于高分子材料技术领域，所述的高阻隔的生物可降解膜，包括依次设置的PLA层、PGA层和PBAT层；所述PLA层包含以下重量份的组分：100份PLA、5～30份PBAT、3～15份反应性增容剂；所述PGA层包含以下重量份的组分：100份PGA、5～20份反应性增容剂；所述PBAT层包含以下重量份的组分：100份PBAT、5～15份PGA、3～15份反应性增容剂。本发明包括PLA层、PGA层和PBAT层的生物可降解膜，能够兼顾力学性能和高阻隔性。
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