Biaxially oriented polyamide film and method for producing the same

A biaxially oriented polyamide film with chemically recycled polyamide, enhanced by a chain extender, addresses the degradation issues of chemically recycled films, ensuring thermal stability and mechanical strength for applications like food packaging and battery casings.

JP2026061764APending Publication Date: 2026-04-09TOYOBO CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2026-04-09

AI Technical Summary

Technical Problem

Chemically recycled polyamide films exhibit reduced yellowing resistance and mechanical strength under high-temperature conditions, making them unsuitable for applications requiring thermal stability.

Method used

A biaxially oriented polyamide film with chemically recycled polyamide, produced using specific manufacturing conditions and additives, such as a chain extender, to reduce chemiluminescence emission and maintain mechanical strength under high temperatures.

Benefits of technology

The film suppresses degradation under high temperatures, maintaining puncture strength, color stability, and mechanical integrity, suitable for applications like food packaging and battery casings.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure 2026061764000001
    Figure 2026061764000001
  • Figure 2026061764000002
    Figure 2026061764000002
Patent Text Reader

Abstract

To provide a polyamide film that can suppress degradation under high-temperature conditions. [Solution] The polyamide film is a biaxially oriented film in which the cumulative amount of chemical luminescence emitted when heat-treated at 150°C for 1 hour in an oxygen-containing gas atmosphere is less than 10.0 Mcps / mg. The polyamide film preferably contains a chemically recycled polyamide. The chemically recycled polyamide is preferably a polyamide made from ε-caprolactam obtained by decomposing a polyamide resin.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Polyamide resin film manufacturing method

    JP2022173206A

  • Method for producing polyamide resin film

    WO2021149815A1