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:
Jun. 26, 1979
Filed:
Jun. 07, 1977
Applicant:
Inventors:
Gunnar Cederqvist, Lerdala, SE;
Ulf Aberg, Skovde, SE;
Assignee:
Rockwool Aktiebolaget, Skovde, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
162145 ; 162147 ; 162189 ; 162D / ;
Abstract
A method for producing shaped bodies of fibrous materials using mineral fibers, cellulosic fibers, and zero fibers. The zero fibers are extremely thin and short cellulosic fibers produced either synthetically or from natural by-products from the cellulose industry. These bodies can be used as substitutes for asbestos fiber products, and display physical properties, such as resistance and rigidity, comparable to the asbestos products. The fibrous materials are produced using an aqueous dispersion of the mineral fibers, cellulose fibers, and zero fibers, whereafter the dispersion is de-watered, shaped and dried.