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:
May. 26, 2020
Filed:
Dec. 26, 2012
Applicant:
Ahlstrom-munksjö Oyj, Helsinki, FI;
Inventors:
Emmanuel Faynot, Vif, FR;
Marc Berlioz, Froges, FR;
Samuel Merlet, Route de la Gorge, FR;
Claude Leclercq, Pernes les Fontaines, FR;
Assignee:
Ahlstrom-Munksjö Oyj, Helsinki, FI;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E04C 2/28 (2006.01); E04C 2/04 (2006.01); B32B 13/14 (2006.01); B32B 5/28 (2006.01); B32B 5/26 (2006.01); B32B 5/02 (2006.01); B32B 7/02 (2019.01); B32B 5/08 (2006.01); D21H 17/00 (2006.01); D21H 21/16 (2006.01); D21H 27/02 (2006.01); D21H 27/38 (2006.01);
U.S. Cl.
CPC ...
E04C 2/28 (2013.01); B32B 5/022 (2013.01); B32B 5/08 (2013.01); B32B 5/26 (2013.01); B32B 5/28 (2013.01); B32B 7/02 (2013.01); B32B 13/14 (2013.01); D21H 17/74 (2013.01); D21H 21/16 (2013.01); D21H 27/02 (2013.01); D21H 27/38 (2013.01); E04C 2/043 (2013.01); B32B 2250/05 (2013.01); B32B 2250/40 (2013.01); B32B 2260/023 (2013.01); B32B 2260/044 (2013.01); B32B 2260/046 (2013.01); B32B 2262/0276 (2013.01); B32B 2262/062 (2013.01); B32B 2262/101 (2013.01); B32B 2262/14 (2013.01); B32B 2307/538 (2013.01); B32B 2307/714 (2013.01); B32B 2307/718 (2013.01); B32B 2307/7145 (2013.01); B32B 2607/00 (2013.01); Y10T 428/24355 (2015.01); Y10T 428/24612 (2015.01);
Abstract
Gypsum board having a core, said core having at least one side covered with a non-woven fabric; characterized in that the inner side of the non-woven fabric, which is in contact with the core of the gypsum board, has a surface roughness Ra of from 25 to 60 micrometers, preferably from 25 to 50 micrometers, advantageously from 25 to 40 micrometers.