Multilayer stretched polyamide film

Abstract

An object of the present invention is to provide a multilayer stretched polyamide-based film having excellent bending resistance, thermal dimensional stability and aroma retention, whose lamination strength is measureable when a sealing layer is laminated thereon. Specifically, the invention provides a multilayer stretched polyamide-based film obtained by biaxially stretching a multilayer laminate including three layers consisting of a polyester layer (Layer A), an adhesive layer (Layer B), and a polyamide layer (Layer C), wherein Layer A contains a crystalline polyester, Layer B contains a modified polyester-based elastomer, Layer C contains an aliphatic polyamide, and Layer C has a thickness of 5 μm or more, and wherein a sealing layer is to be laminated on Layer C by a lamination method, after biaxially stretching the multilayer laminate.

Dependencies are inferred from the claim text.