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. 07, 1977
Filed:
Sep. 25, 1974
Applicant:
Inventor:
Gary L Driscoll, Boothwyn, PA (US);
Assignee:
Sun Ventures, Inc., St. Davids, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; D21B / ;
U.S. Cl.
CPC ...
264 51 ; 162146 ; 1621 / ; 264147 ; 264230 ; 264D / ; 264D / ; 264D / ;
Abstract
Synthetic paper pulp is prepared by extruding a foam sheet of a synthetic thermoplastic fiber forming resin, which resin contains from 0.1 to 5.0 wt. % and preferably from 1 to 2 wt. % of a soap such as aluminum stearate, attenuating the foam sheet as it is extruded and applying either heat or a shearing action to the attenuated sheet to cause it to break down into short fibers containing numerous fibrils. This pulp is then either used directly or blended with natural pulp, wet laid to form a coarse paper and then formed into a final paper product by application of heat and pressure. The soap serves to improve the wettability of the resulting fibers.