Core Viewpoint - Xiamen Changsu Industrial Co., Ltd. has applied for a patent for a high thermal conductivity biaxially stretched polyamide film for soft-pack batteries, indicating a focus on advanced materials for battery technology [1] Summary by Sections Patent Application - The patent application is titled "A high thermal conductivity biaxially stretched polyamide film for soft-pack batteries and its preparation method" with publication number CN120382700A, filed on May 2025 [1] Material Composition - The film consists of a three-layer structure: - **Upper Layer**: Composed of 1-8 parts of anti-stick masterbatch, 5-20 parts of thermal conductive materials, 5-50 parts of thermal conductive polyamide 6, 1-10 parts of biphenyl-type liquid crystal units, and 12-88 parts of polyamide 6 [1] - **Middle Layer**: Composed of 5-25 parts of thermal conductive materials, 5-60 parts of thermal conductive polyamide 6, 1-10 parts of biphenyl-type liquid crystal units, and 5-89 parts of polyamide 6 [1] - **Lower Layer**: Composed of 1-8 parts of anti-stick masterbatch, 5-20 parts of thermal conductive materials, 5-50 parts of thermal conductive polyamide 6, 1-10 parts of biphenyl-type liquid crystal units, and 12-88 parts of polyamide 6 [1] Material Properties - The inclusion of biphenyl-type liquid crystal units enhances the molecular order of the material, improving mechanical strength, thermal stability, and thermal conductivity of the film [1]