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:
Oct. 25, 2011
Filed:
Feb. 19, 2008
Applicants:
Eberhard Pfeiffer, Kandel, DE;
Harri Dittmar, Battenberg, DE;
Karl-ludwig Brentrup, Moriken, CH;
Inventors:
Assignee:
Quadrant Plastic Composites, AG, Lenzburg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 43/18 (2006.01); B29C 43/20 (2006.01);
U.S. Cl.
CPC ...
Abstract
Low density and acoustically absorbing panels are produced by consolidation in a mold of a heated part of a pre-cut, lofty, semi-finished product containing polypropylene fibers and reinforcing fibers and having an air pore content of 20 to 80 vol.-% wherein overlapping with the periphery of the pre-cut part are heated strips of polypropylene optionally containing up to 60 wt.-% reinforcing fibers, but containing 5 vol.-% or less of air pores.