| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated biaxially-stretched polyamide-based film suitable for packing application use, excellent in an oxygen gas barrier property, impact resistance and resistance to fatigue from flexing which are qualities necessary as a packaging film, capable of preventing a content from being deteriorated or discolored, when used as various packaging materials, and further effective for preventing a bag for merchandise from being broken by vibration or impact in transportation, and capable of protecting the quality of the content. SOLUTION: This laminated biaxially-stretched polyamide-based film is laminated with a resin layer (layer B) mainly composed of an aliphatic polyamide resin on at least one surface of a resin layer (layer A) mainly composed of a polyamide polymer containing m-xylylene diamine or a mixture of m-xylylene diamine and p-xylylene diamine as a main diamine component, and containing aα,ω-6-12C aliphatic dicarboxylic acid as a main dicarboxylic acid component, and has a specific small number of pinholes, a specific low oxygen permeability and a specific high separation strength. COPYRIGHT: (C)2009,JPO&INPIT |
