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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.:

US 11745480 B1

PDFFull Text
Date of Patent:
Sep. 05, 2023

Filed:

Sep. 25, 2019

Composite film

Applicant:

Ewald Dörken Ag, Herdecke, DE;

Inventor:

Thomas Bachon, Düsseldorf, DE;

Assignee:

EWALD DÖRKEN AG, Herdecke, DE;

Attorneys:

Jason H. Vick

Sheridan Ross, PC

Primary Examiner:

Lawrence D Ferguson

Int. Cl.
CPC ...
B32B 27/12 (2006.01); B32B 5/02 (2006.01); B32B 5/18 (2006.01); B32B 5/24 (2006.01); B32B 7/08 (2019.01); B32B 7/14 (2006.01); B32B 27/08 (2006.01); B32B 27/32 (2006.01); B32B 27/36 (2006.01); B32B 27/40 (2006.01); E04B 1/62 (2006.01); E04D 5/10 (2006.01); E04D 12/00 (2006.01);
U.S. Cl.
CPC ...
B32B 27/12 (2013.01); B32B 5/022 (2013.01); B32B 5/18 (2013.01); B32B 5/245 (2013.01); B32B 7/08 (2013.01); B32B 7/14 (2013.01); B32B 27/08 (2013.01); B32B 27/32 (2013.01); B32B 27/36 (2013.01); B32B 27/40 (2013.01); E04B 1/625 (2013.01); E04D 5/10 (2013.01); E04D 12/002 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/0276 (2013.01); B32B 2307/718 (2013.01); B32B 2419/00 (2013.01);
Abstract

The invention relates to a composite film (), preferably intended for use in the construction industry and/or preferably for use as a construction film, having at least one functional layer (), at least one outer protective layer () and at least one inner protective layer (), the functional layer () being arranged between the outer protective layer () and the inner protective layer (). According to the invention, it is provided that the functional layer () is formed as at least a single-layer membrane layer, that the outer protective layer () is formed as a nonwoven layer comprising polyolefin and the inner protective layer () is formed as a nonwoven layer comprising polyester.

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