异步拉伸高阻隔复合食品包装膜的制备工艺
By combining asynchronous stretching technology with an inorganic oxide layer, a nanofiber network is formed, which solves the problem of insufficient molecular chain arrangement in the barrier layer, realizing a food packaging film with high barrier performance, meeting the long-term preservation needs of high-end foods and reducing production energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU HUADONG PACKAGING TECH CO LTD
- Filing Date
- 2025-12-30
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, the synchronous biaxial stretching process results in insufficient molecular chain arrangement and imperfect crystal structure in the barrier layer, forming defects and channels, leading to insufficient barrier performance and difficulty in meeting the long-term preservation requirements of high-end foods; the asynchronous stretching process causes stress relaxation and orientation springback of molecular chains, resulting in unstable performance.
An asynchronous stretching process is employed to form a high aspect ratio nanofiber network by controlling temperature and speed. This network, combined with an inorganic oxide layer, constructs a microscopic tortuous path and a macroscopic dense barrier, thereby enhancing barrier performance.
It significantly reduces oxygen and water vapor permeability, improves barrier properties, meets the long-term preservation requirements of high-end foods, and reduces production energy consumption and costs.
Smart Images
Figure CN121608372B_ABST