Heat-shrinkable multilayer film
AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorsTakahisa Ueyama, Tadayoshi Itoh, Eiichi Hayashi, Hajime Tsukamoto
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Abstract
A polyester-surfaced heat-shrinkable multilayer film exhibiting good printability and adaptability to various automatic packaging processes is provided, including an outer surface layer (a) comprising a polyester resin, an intermediate layer (b) comprising a polyamide resin and an inner surface layer (c) comprising a sealable resin. The film exhibits a heat-shrinkable stress at 50° C. of at most 3 MPa both in longitudinal direction and in transverse direction, and a hot water shrinkability at 90° C. of at least 20%.
Claims27
A heat-shrinkable multilayer film, comprising at least three layers including an outer surface layer (a) comprising a polyester resin, an intermediate layer (b) comprising a polyamide resin, and an inner surface layer (c) comprising a sealable resin;
- said multilayer film exhibiting a heat-shrinkage stress at 50° C. of at most 3 MPa both in longitudinal direction and in transverse direction, and a hot water shrinkability at 90° C. of at least 20%.
Dependencies are inferred from the claim text.