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:
Feb. 15, 1977
Filed:
Jan. 22, 1975
Applicant:
Inventors:
Assignee:
Daicel, Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29G / ;
U.S. Cl.
CPC ...
264137 ; 264128 ;
Abstract
A nonwoven cellulose acetate laminate is made from a base material mainly composed of a cellulose acetate fiber web, in a short time, by the steps of: impregnating a liquid initial condensate of phenol-formaldehyde into the web or spraying a powdery condensate of phenol-formaldehyde onto the web, and then penetrating superheated steam through the resultant cellulose acetate laminate sheet. The sheet possesses good mechanical properties and excellent sound-absorbing and heat-insulating characteristics.