公开(公告)号：US20220340789A1

公开(公告)日：2022-10-27

申请号：US17635918

申请日：2020-08-19

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： David B. Bilbrey

IPC: C09J7/50 ,  B32B27/20 ,  B32B25/08 ,  B32B27/34 ,  B32B27/30 ,  B32B27/40

Abstract: Conformable, stretchable, printable films are described. In particular, films that include a film substrate, a pressure sensitive adhesive, and a hybrid solvent barrier/primer layer including a blend of two copolyamides that are not miscible are described. Such hybrid solvent barrier and primer layers may be effective as both a solvent barrier and a primer layer.

公开(公告)号：US20230295391A1

公开(公告)日：2023-09-21

申请号：US18021505

申请日：2021-08-18

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Tianyu Wu ,  Rajdeep S. Kalgutkar ,  Ning Zhou ,  David B. Bilbrey

IPC: C08J7/04 ,  C09J7/50 ,  C09D177/10 ,  C08J7/043

CPC classification number: C08J7/042 ,  C09J7/50 ,  C09D177/10 ,  C08J7/043 ,  C08J2367/04 ,  C08J2377/10 ,  C09J2477/001 ,  C09J2467/006

Abstract: Films including solvent barriers and primer layers are described. In particular, films including a substrate, the substrate including polylactic acid, a primer layer disposed on the substrate, a barrier layer disposed on the surface of the primer layer opposite the substrate, and an adhesive layer disposed on a surface of the barrier layer opposite the primer layer. The barrier layer includes an amorphous aliphatic polyamide with a glass transition temperature of at least 40 #C. Such films can provide acceptable adhesion and barrier performance to polylactic acid based graphics film systems.