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:
Jan. 16, 1979
Filed:
Feb. 23, 1977
Applicant:
Inventors:
James Dow, Thaxted, GB;
Ronald Lloyd, Sawbridgeworth, GB;
Albert G Patchell, Welwyn Garden City, GB;
Assignee:
Smith & Nephew Polyfabrik Limited, Nelson, GB;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
264147 ; 264175 ; 2642 / ; 264284 ; 264288 ; 264D / ;
Abstract
An extruded sheet or the like of cold-drawable polymer such as polypropylene is embossed as a molten sheet by a circumferentially multi-grooved roller and stretched in the direction of the embossed grooves to split into filaments along the grooves.