公开(公告)号：US20240217222A1

公开(公告)日：2024-07-04

申请号：US18685038

申请日：2022-08-23

Applicant: TOPPAN INC.

Inventor： Masaki SATO ,  Hiroyuki OTSUKA ,  Yuka FUKUDA

IPC: B32B27/08 ,  B32B3/26 ,  B32B7/12 ,  B32B27/32 ,  B32B27/34 ,  B32B27/40 ,  B65D75/26 ,  B65D75/58

CPC classification number: B32B27/08 ,  B32B3/266 ,  B32B7/12 ,  B32B27/32 ,  B32B27/34 ,  B32B27/40 ,  B65D75/26 ,  B65D75/5805 ,  B32B2307/582 ,  B32B2439/46

Abstract: A laminate film including a base material layer and a sealant layer including a polyolefin resin, the base material layer including a first resin layer that includes a polyolefin resin and a second resin layer that includes a laser beam-absorbing resin, in which the laser beam-absorbing resin absorbs a laser beam used to form a half-cut line, the polyolefin resins included in the sealant layer and the first resin layer do not absorb the laser beam, and a total content percentage occupied by the polyolefin resins in the entirety of the laminate film is 90% by mass or greater.