Patent ID: 11965067
Assignee: DOW GLOBAL TECHNOLOGIES LLC
Field: Surface technology, coating (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 6:
7. A process comprising:
(A) providing at least 6 film layers, each film layer being a pearlized biaxially oriented polypropylene (BOPP) with one of the BOPP film layers being an outermost layer on a first side of the laminate and another BOPP layer being an outermost layer on a second side opposing the first side;
(B) applying a solvent-less adhesive at a coat weight from 2.0 g/m2 to 3.5 g/m2 between each film layer such that the solvent-less adhesive is in direct contact with two film layers, the solventless adhesive comprising
(i) a polyol component comprising at least one polyol selected from the group consisting of a polyester polyol, a polyether polyol, and combinations thereof;
(ii) an isocyanate component comprising an isocyanate prepolymer that is the reaction product of at least one isocyanate monomer and at least one polyol selected from the group consisting of a polyester polyol, a polyether polyol, and combinations thereof; and

(C) forming a laminate, the laminate having a thickness of at least 300 μm.