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:
Jan. 20, 2004
Filed:
May. 31, 2001
Roger E. Mulder, Groningen, NL;
Charles W. Peterson, Bergen op Zoom, NL;
Harri Dittmar, Battenberg, DE;
PPG Industries Ohio, Inc., Cleveland, OH (US);
Abstract
The present invention provides a mat having at least one primary area and at least one secondary area and adapted to reinforce a polymeric matrix material, the mat comprising (a) a first layer comprising a plurality of generally parallel, essentially continuous glass fiber strands oriented generally parallel to a longitudinal axis of the mat, at least a portion of outer surfaces of the first layer glass fiber strands having applied thereon at least a partial layer comprising at least a partially dried residue of first coating composition which is compatible with a polymeric matrix material, wherein at least a first portion of the first layer glass fiber strands are positioned within the at least one primary area at a primary strand density and at least a second portion of the first layer glass fiber strands are positioned within the at least one secondary area at a secondary strand density which is different from the primary strand density; and (b) a second layer comprising a plurality of randomly oriented glass fiber strands positioned within the at least one primary area and the at least one secondary area and adjacent to a surface of the first layer, at least a portion of outer surfaces of the second layer glass fiber strands having applied thereon at least a partial layer comprising at least a partially dried residue of a second coating composition which is compatible with the polymeric matrix material, wherein the first and second layers are joined to hold the mat together.