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. 31, 1984
Filed:
May. 14, 1982
Applicant:
Inventor:
Ewald A Kamp, Chicago, IL (US);
Assignee:
Union Carbide Corporation, Danbury, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B32B / ; B32B / ;
U.S. Cl.
CPC ...
156 66 ; 383 63 ; 15624411 ; 15624425 ; 156500 ; 156501 ; 2641 / ; 264259 ; 425111 ; 425112 ; 425113 ; 428172 ; 428192 ;
Abstract
A method and apparatus for extruding a film, a tape and a closure device simultaneously to produce integrated interlocking closure stock comprising (a) extruding a sheet of film onto a rotating casting roll at a rate to provide a high draw-down ratio; (b) extruding a tape to join the film on the casting roll at a rate to provide a medium draw-down ratio; and (c) extruding a closure device onto the tape as it approaches the casting roll at a rate to provide a small draw-down ratio.