US 11,691,399 B2
Multi-layer film with improved modulus properties
Heinz Pudleiner, Krefeld (DE); Klaus Meyer, Dormagen (DE); Jürgen Winkler, Langenfeld (DE); Wolfgang Bräuer, Leverkusen (DE); Joerg Nickel, Dormagen (DE); Craig Pehlert, Lenox, MA (US); Chunhua Li, Cupertino, CA (US); and Yan Chen, Cupertino, CA (US)
Assigned to Covestro Intellectual Property GmbH & Co. KG, Leverkusen (DE)
Filed by Covestro Intellectual Property GmbH & Co. KG, Leverkusen (DE)
Filed on Jun. 23, 2022, as Appl. No. 17/847,468.
Application 17/847,468 is a continuation of application No. 17/094,182, filed on Nov. 10, 2020, granted, now 11,413,854.
Application 17/094,182 is a continuation of application No. 16/224,867, filed on Dec. 19, 2018, granted, now 10,864,708.
Application 16/224,867 is a continuation of application No. 14/400,363, granted, now 10,286,635, previously published as PCT/EP2013/059701, filed on May 10, 2013.
Prior Publication US 2022/0324211 A1, Oct. 13, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. B32B 27/08 (2006.01); B32B 27/40 (2006.01); B32B 27/36 (2006.01); A61C 5/00 (2017.01); C08J 7/04 (2020.01); C08L 75/08 (2006.01); A61C 13/00 (2006.01); B29C 48/92 (2019.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 48/625 (2019.01); B29C 48/21 (2019.01); B29C 48/30 (2019.01); B29C 48/34 (2019.01)
CPC B32B 27/08 (2013.01) [A61C 5/007 (2013.01); A61C 13/0022 (2013.01); B29C 48/0011 (2019.02); B29C 48/0017 (2019.02); B29C 48/08 (2019.02); B29C 48/21 (2019.02); B29C 48/625 (2019.02); B29C 48/92 (2019.02); B32B 27/36 (2013.01); B32B 27/365 (2013.01); B32B 27/40 (2013.01); C08J 7/042 (2013.01); C08L 75/08 (2013.01); B29C 48/30 (2019.02); B29C 48/34 (2019.02); B29C 2948/92609 (2019.02); B29C 2948/92704 (2019.02); B32B 2250/03 (2013.01); B32B 2250/24 (2013.01); B32B 2250/40 (2013.01); B32B 2307/4026 (2013.01); B32B 2307/412 (2013.01); B32B 2307/536 (2013.01); B32B 2307/54 (2013.01); B32B 2535/00 (2013.01); C08J 2369/00 (2013.01); C08J 2467/02 (2013.01); C08J 2475/04 (2013.01); Y10T 428/24967 (2015.01); Y10T 428/24983 (2015.01)] 29 Claims
 
1. A multi-layer plastic film, having
a layer A containing at least one polycarbonate or copolycarbonate and/or at least one polyester or copolyester, the layer A having a glass transition temperature Tg from 80° C. to 200° C.,
and at least one layer B containing at least one thermoplastic polyurethane, polyester and/or copolyester, the at least one layer B exhibiting a hardness from 45 Shore D to 85 Shore D,
wherein the adhesive force between the layer A and the at least one layer B is greater than 0.5 N/mm, determined in accordance with ASTM D 903 98,
wherein the film has been co-extruded.