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:
Sep. 25, 1984
Filed:
Sep. 07, 1982
Applicant:
Inventor:
Raban Grundmann, Marl, DE;
Assignee:
Chemische Werke Huels, Marl, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428 68 ; 428 71 ; 428 74 ; 428 76 ; 428402 ; 428407 ; 252 62 ; 156 71 ;
Abstract
New damping (insulating) materials are based on polyvinyl chloride particles or balled up fibers which are extremely lightweight and have a bulk density of 10-200 g/l and a particle weight less than 1 g. The particles are either enveloped by sheets or combined into lightweight components by means of heat or by the addition of binders, such as adhesives, fusion (hot-melt) adhesives, curable polymers, or frothed (pre-foamed), expandable polymers.