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:
Aug. 27, 1991
Filed:
Aug. 30, 1989
Applicant:
Inventor:
Michael D Butler, North Andover, MA (US);
Assignee:
Borden, Inc., Columbus, OH (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
15624411 ; 15624418 ; 15624419 ; 428347 ; 428349 ; 428910 ;
Abstract
The invention relates to a process for improving the slittability and subsequent wind-up of a roll of clear plastic multilayer coextrusion film by the addition to the skin layer of a slitting aid. The slitting aid is an inorganic filler material the presence of which in the skin layer reduces or eliminates telescoping of the rolled coextruded film, facilitates faster line speed, and allows the reduction of taper tension as the wind-up process progresses.