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:
Sep. 16, 1980
Filed:
Apr. 27, 1978
Applicant:
Inventor:
Eckhard C Schwarz, Neenah, WI (US);
Assignee:
Biax Fiberfilm Corporation, Neenah, WI (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; D04H / ; D06C / ;
U.S. Cl.
CPC ...
428198 ; 264286 ; 264287 ; 2642888 ; 428288 ;
Abstract
A non-woven web of synthetic fibers is selectively stretched in incremental portions in a first and second station wherein the first and second station are provided with sets of rolls having grooves parallel and perpendicular, respectively, to the axis of each set of rolls to form a bi-axially stretched web. One groove pattern of the rolls is generally a sinosoidal wave with distances between grooves being less than 1.0 millimeters times the web basis weight in grams per square meter.