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:
Nov. 29, 2016
Filed:
Jul. 15, 2013
Applicant:
Ahlstrom Corporation, Helsinki, FI;
Inventor:
Rainer Bergström, Mikkeli, FI;
Assignee:
Ahlstrom Corporation, Helsinki, FI;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 70/54 (2006.01); B32B 5/06 (2006.01); B29C 70/22 (2006.01); B32B 5/02 (2006.01); B32B 38/00 (2006.01);
U.S. Cl.
CPC ...
B32B 5/06 (2013.01); B29C 70/226 (2013.01); B29C 70/547 (2013.01); B32B 5/022 (2013.01); B32B 38/00 (2013.01); B32B 2305/20 (2013.01);
Abstract
A stitched unidirectional or multi-axial reinforcement and a method of producing a stitched unidirectional or multi-axial reinforcement includes transversely arranging thin discrete flow passage forming means having a diameter of 70-300 μm in a direction transverse to the direction of the unidirectional rovings at least on the continuous rovings of the at least one layer, and stitching the thin discrete flow passage forming means and the continuous unidirectional rovings to one another to form a reinforcement.