Method for producing gas-barrier film, gas-barrier film, packaging material film, and packaging material
By forming an inorganic oxide layer on a substrate layer and coating it with an active energy ray curable resin composition, the problem of gas barrier properties deteriorating due to thermal deformation during hot air drying of the gas barrier film is solved, achieving excellent oxygen barrier and water vapor barrier properties.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- TOPPAN HOLDINGS INC
- Filing Date
- 2024-12-12
- Publication Date
- 2026-07-17
AI Technical Summary
Existing gas barrier membranes are prone to deterioration in gas barrier properties during hot air drying due to thermal deformation, especially a reduction in oxygen barrier properties, which is more pronounced when polyolefin resin membranes are used as the substrate.
An inorganic oxide layer is formed on a substrate layer, and an active energy ray curable resin composition is coated on it. The active energy ray cures the resin to form an outer coating. Specifically, the proportion and structure of acrylic compounds are controlled to increase the crosslinking density and form a dense film.
Regardless of the heat resistance of the substrate film, it exhibits excellent gas barrier properties, improving oxygen and water vapor barrier properties and reducing cracks and gas barrier properties caused by thermal deformation.
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Figure CN122422149A_ABST
Abstract
Citation Information
Patent Citations
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JP2000167973A