US 12,187,015 B2
Polyvinylidene fluoride-acrylate and thermoplastic polyurethane multilayer protective film
David Collette, South Hadley, MA (US); and Thomas Burke, Conway, MA (US)
Assigned to DelStar Technologies, Inc.; and Mativ Luxembourg, (LU)
Filed by ARGOTEC LLC, Geenfield, MA (US); and SWM Luxembourg, Contern (LU)
Filed on Aug. 21, 2023, as Appl. No. 18/452,787.
Application 18/452,787 is a division of application No. 16/764,378, granted, now 11,731,405, previously published as PCT/EP2018/081653, filed on Nov. 16, 2018.
Claims priority of provisional application 62/587,429, filed on Nov. 16, 2017.
Prior Publication US 2024/0051277 A1, Feb. 15, 2024
Int. Cl. B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/40 (2006.01); G11C 7/12 (2006.01); G11C 7/18 (2006.01)
CPC B32B 27/08 (2013.01) [B32B 27/304 (2013.01); B32B 27/308 (2013.01); B32B 27/40 (2013.01); B32B 2307/406 (2013.01); B32B 2307/412 (2013.01); B32B 2307/584 (2013.01); B32B 2307/732 (2013.01); B32B 2327/00 (2013.01); B32B 2333/12 (2013.01); B32B 2375/00 (2013.01)] 14 Claims
 
1. A method of making a multilayer film characterized in that the method comprises:
(a) forming a first layer comprising a polyvinylidene fluoride (PVDF)/acrylate polymer blend;
(b) forming a second layer consisting of a polycaprolactone-based thermoplastic polyurethane; and
(c) bonding the first layer to a major surface of the second layer.