US 12,226,967 B2
Multifunctional film
Steven R. Dubrule, Holden, MA (US); Jennifer Adamchuk, Marlborough, MA (US); and Nicole Love, Somerville, MA (US)
Assigned to SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed by SAINT-GOBAIN PERFORMANCE PLASTICS CORPORATION, Solon, OH (US)
Filed on Jun. 15, 2021, as Appl. No. 17/348,055.
Claims priority of provisional application 63/040,947, filed on Jun. 18, 2020.
Prior Publication US 2021/0394465 A1, Dec. 23, 2021
Int. Cl. B29C 70/54 (2006.01); C08L 101/00 (2006.01); C09D 5/00 (2006.01)
CPC B29C 70/544 (2021.05) [C08L 101/00 (2013.01); C09D 5/00 (2013.01); C08L 2201/14 (2013.01); C08L 2203/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A multifunctional film for a vacuum bag, wherein the multifunctional film comprises:
a flexible barrier film comprising a textured surface; and
a release coating overlying the textured surface of the flexible barrier film;
wherein the multifunctional film has an oxygen (O2) permeability of not greater than about 1100 cc/(m2-day-atm),
wherein the multifunctional film comprises a Young's modulus of at least about 10 MPa and not greater than about 10,000 MPa,
wherein the textured surface of the flexible barrier film comprises a repeating pattern of channels,
wherein the channels have an average channel width ACW of at least about 0.1 mm and not greater than about 100 mm, and
wherein the multifunctional film has a stability rating of not greater than about 90%, where the stability rating is defined as the maximum percent decrease in elongation at break as measured using ASTM D882 after being exposed to a temperature of 200° C. for 12 hours.