公开(公告)号：US20230202153A1

公开(公告)日：2023-06-29

申请号：US17926930

申请日：2021-05-31

Applicant: TOPPAN INC.

Inventor： Daisuke HAMADA ,  Motokuni TAKENOUCHI ,  Tomoko OOKI ,  Tsuguki NISHIHARA ,  Masafumi HORIUCHI

IPC: B32B27/08 ,  B32B27/32 ,  B32B7/02 ,  B65D65/40

CPC classification number: B32B27/08 ,  B32B27/32 ,  B32B7/02 ,  B65D65/40 ,  B32B2270/00 ,  B32B2307/732 ,  B32B2439/46 ,  B32B2307/414 ,  B32B2307/538 ,  B32B2307/31 ,  B32B2250/242 ,  B32B2250/03

Abstract: A multilayer film including a first outer layer containing 70 to 30% by mass of a propylene homopolymer (A) and 30 to 70% by mass of a propylene/ethylene random copolymer (B) having an ethylene content of 5% by mass or less, an inner layer containing a propylene/ethylene block copolymer (C) and an ethylene/propylene copolymer elastomer (D), and a second outer layer containing 70 to 30% by mass of the propylene homopolymer (A) and 30 to 70% by mass of the propylene/ethylene random copolymer (B) having an ethylene content of 5% by mass or less, in that order.