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. 06, 2004
Filed:
Apr. 09, 2001
Applicant:
Inventor:
Thomas G. Mushaben, Cincinnati, OH (US);
Assignee:
Clopay Plastic Products Company, Inc., Mason, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 5/500 ;
U.S. Cl.
CPC ...
B29C 5/500 ;
Abstract
The method and apparatus of the present invention prevents the formation of pin-holes during stretching of strip laminates in the cross-machine direction (CD). Pin-holes are prevented by creating slack areas ( ) along the length of the laminate ( ) where the edges of the non-woven strips ( ) meet with the polymer film ( ), pressing the slack areas ( ) into the interdigital stretching rollers ( ) without stretching the slack areas ( ), and stretching the remainder of the laminate ( ) in a typical manner. The slack areas ( ) are formed prior to interdigitation by, for example, formation of a furrow, a fold or a corrugation.