US 11,945,204 B2
Smooth film laminated elastomer articles
Jason Krizan, Elkton, MD (US); Douglas R. Duriez, Morgantown, PA (US); Liang Fang, Chesterbrook, PA (US); and Kerry Drake, Red Hill, PA (US)
Assigned to West Pharmaceutical Services, Inc., Exton, PA (US)
Filed by West Pharmaceutical Services, Inc., Exton, PA (US)
Filed on Apr. 5, 2022, as Appl. No. 17/713,920.
Application 17/713,920 is a division of application No. 16/771,136, granted, now 11,325,367, previously published as PCT/US2018/066078, filed on Dec. 17, 2018.
Claims priority of provisional application 62/599,259, filed on Dec. 15, 2017.
Prior Publication US 2022/0227113 A1, Jul. 21, 2022
Int. Cl. B32B 38/10 (2006.01); A61M 5/315 (2006.01); B29C 43/00 (2006.01); B29C 43/02 (2006.01); B29C 43/20 (2006.01); B29C 65/00 (2006.01); B29C 65/70 (2006.01); B32B 27/08 (2006.01); B32B 27/26 (2006.01); B32B 27/30 (2006.01); B32B 37/00 (2006.01); B32B 37/26 (2006.01); B29K 27/18 (2006.01); B29L 31/00 (2006.01)
CPC B32B 38/10 (2013.01) [A61M 5/31513 (2013.01); B29C 43/003 (2013.01); B29C 43/02 (2013.01); B29C 43/203 (2013.01); B29C 65/70 (2013.01); B29C 66/81265 (2013.01); B32B 27/08 (2013.01); B32B 27/26 (2013.01); B32B 27/304 (2013.01); B32B 37/0053 (2013.01); B32B 37/26 (2013.01); A61M 2207/10 (2013.01); B29C 2043/025 (2013.01); B29K 2027/18 (2013.01); B29L 2031/7544 (2013.01); B32B 2037/268 (2013.01); B32B 2274/00 (2013.01); B32B 2305/72 (2013.01); B32B 2307/406 (2013.01); B32B 2307/538 (2013.01); B32B 2307/714 (2013.01); B32B 2435/02 (2013.01); B32B 2439/80 (2013.01); Y10T 428/1352 (2015.01); Y10T 428/1386 (2015.01)] 19 Claims
OG exemplary drawing
 
1. An elastomeric article for sealing a container, the elastomeric article comprising:
an elastomeric body having an external sidewall surface and an external crown surface; and
a fluoropolymer film layer having an internal surface and an external surface, the internal surface of the fluoropolymer film layer being laminated to the external sidewall surface and the external crown surface, the external surface of the fluoropolymer film layer including a drug contact surface positioned over the external crown surface and being configured to contact a drug contained in the container and a sealing surface positioned over the external sidewall surface and being configured to contact an interior surface of the container,
wherein the external surface of the fluoropolymer film layer is substantially free of striations, and the sealing surface has a surface roughness characterized by a peak density greater than 50,000 peaks/mm2 when applying a Gaussian filter of 2.0 microns or a peak density greater than 300,000 peaks/mm2 when applying a Gaussian filter of 0.08 microns.