The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2026
Filed:
Nov. 02, 2021
Applicant:
Borealis Ag, Vienna, AT;
Inventors:
Antti Tynys, Linz, AT;
Yi An Lin, New Taipei, TW;
Assignee:
BOREALIS AG, Vienna, AT;
Primary Examiner:
Int. Cl.
CPC ...
B32B 5/18 (2006.01); B32B 27/06 (2006.01); B32B 27/32 (2006.01);
U.S. Cl.
CPC ...
B32B 5/18 (2013.01); B32B 27/065 (2013.01); B32B 27/32 (2013.01); B32B 2250/02 (2013.01); B32B 2255/102 (2013.01); B32B 2266/025 (2013.01); B32B 2307/51 (2013.01); B32B 2307/54 (2013.01); B32B 2307/718 (2013.01); B32B 2307/7244 (2013.01); B32B 2307/7246 (2013.01); B32B 2307/7376 (2023.05); B32B 2439/70 (2013.01);
Abstract
The present invention relates to a multilayer sheet comprising at least two layers (A) and (B) in adherent contact with each other, wherein layer (A) is a foamed sheet comprising a high melt strength polypropylene composition and layer (B) is a coated non-foamed layer, which comprises a polypropylene composition, a process for producing said multilayer sheet, an article comprising said multilayer sheet and the use of said multilayer sheet for the production of an article with improved water vapor transmission and oxygen transmission properties.