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:
Aug. 18, 1981
Filed:
Feb. 19, 1980
Applicant:
Inventor:
Gummar Cederqvist, S Lerdala, SE;
Assignee:
Rockwool Aktiebolaget, Skovde, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
162152 ; 1621 / ; 162169 ; 162185 ; 162205 ;
Abstract
A suspension of artificial mineral fibers and cellulosic fibers is dewatered during shaping on a wire. The sheet is thereafter pressed and dried. A latex emulsion binder is added to the mat after the mat has been partially dried to a solids content of 60 to 90%. The mat product has physical properties, including impression resistance, comparable to previously known asbestos-containing products.