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:
Dec. 12, 1989
Filed:
May. 10, 1988
Applicant:
Inventor:
David W Bainbridge, Lakewood, CO (US);
Assignee:
Manville Corporation, Denver, CO (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; E04B / ;
U.S. Cl.
CPC ...
428184 ; 428182 ; 428186 ; 428252 ; 428286 ; 4283044 ; 4283184 ; 4283188 ; 428137 ; 428138 ; 296211 ; 296214 ; 181284 ; 181288 ; 181290 ; 181291 ; 181292 ; 181293 ;
Abstract
An automotive headliner comprised of a laminate of double corrugated paperboard. Perforations in all the sheets of the laminate except the back paperboard sheet improve the acoustical performance of the liner. A vapor barrier on the back sheet prevents entry of moisture into the laminate from the roof, and a layer of sound dampening material on the front face of the laminate improves the sound absorption of the laminate. The front corrugation is larger than the back corrugation. When molding the laminate it is first moisturized, then heat molded. Heat is applied until the laminate has regained its rigidity.