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:
Jul. 13, 1976
Filed:
Nov. 15, 1973
Applicant:
Inventor:
Gary L Driscoll, Boothwyn, PA (US);
Assignee:
Sun Ventures, Inc., St. Davids, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B29D / ;
U.S. Cl.
CPC ...
264 50 ; 156 79 ; 156229 ; 156306 ; 260 / ; 264 53 ; 264 54 ; 2642 / ; 264D / ; 428107 ; 428523 ; 428910 ;
Abstract
Non-woven fabrics are produced from oriented foam fibrillated webs contaning 50 to 98 wt. % polypropylene and 2 to 50 wt. % polystyrene. The webs are assembled in a plurality of layers and then bonded by heat and pressure either with or without the presence of an adhesive. In a preferred aspect films especially of polyethylene or ethylenevinyl acetate copolymers are used as the bonding agent.