Jiapu Innovative Film (Kunshan) Co., Ltd.

Jiangsu Caihua Packing Group Company

J&a Industrial (Suzhou) Co., Ltd.

Kunshan Jiapu Packing Material Co., Ltd

Xuewen Gao

Yu Xia

Jialiang Xia

Minyan Tang

A high-performance multilayer films for packaging and the structure of the multilayer film is as follows: PO2/POY/PO1/POX/PO3 and PO2/POY/PO1/TIE2/PO3. The multilayer film is obtained by multilayer coextrusion and biaxial stretching. The total thickness of the multilayer film is 8 to 100 micrometers; the absolute values of the differences of the solubility parameters between the PO1 layer and the PO2 layer and between the PO2 layer and PO3 layer is greater than 0.5 (J·cm), and the absolute value of the difference of the cohesive energy density is greater than 5 J/cm.

High-performance multilayer film for packaging

A high-performance multilayer film for packaging, the structure being: BL/TIE/PO1/POX/PO3, obtained once by multilayer coextrusion and biaxial stretching, wherein: the total thickness of the multilayer film is 8 to 100 micrometers; the absolute value of the difference of the solubility parameters between the PO1 and PO3 layer materials is &#x2265;0.1 and &#x2264;0.5, and the absolute value of the difference of the cohesive energy density is &#x2265;3, and &#x2264;5; the solubility parameter and cohesive energy density of the POX bridge material are based on one of the PO1 and PO3 layer materials, and it's transitioned to the other in a gradient way; the absolute value of the difference of the solubility parameters between adjacent layers from the PO1 layer to the POX bridge and the PO3 layer is &#x2264;0.1 (J&#xb7;cm), and the absolute value of the difference of the cohesive energy density is &#x2264;3 J/cm).

A composite packaging material includes a top film and a bottom film as the forming film. The up film is BOPP/PE-TIE-PVDC-TIE-PP-PE structure, which is co-extruded by multi-layer flow or inflation film and formed by a solventless dry way; the bottom films has a PP-TIE-PVDC-TIE-PE structure which is co-extruded by multi-layer flow or inflation film. PVDC is homopolymerization of the polyvinylidene chloride or the copolymer of the methyl acrylate or the vinyl chloride, PE is polyethylene or modified polyethylene, and PP is polypropylene or modified polypropylene. The composite packaging material can solve the problem of effective composite of the PVDC-polyolefin material in the condition of the co-extruding, has high oxygen and water resistance, and can be used for various packages of gasing, vacuumizing and thermal forming.

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Suzhou, China

Xuewen Gao