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. 17, 1991
Filed:
Jan. 08, 1990
Applicant:
Inventors:
Brian C Dais, Midland, MI (US);
Burdette W Miller, Freeland, MI (US);
Assignee:
DowBrands, Inc., Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
15624411 ; 15624425 ; 26417719 ; 2641 / ; 264237 ;
Abstract
An improved cooling process for thermoplastic film webs, profiles, or shapes and interlocking closure profiles extruded onto film webs for use on reclosable bags or containers is provided. A mixture of a surfactant and water is used to cool film webs or closure profiles which have been extruded and secured onto a film web. The surfactant lowers the surface tension of the water, improving its wetting properties and providing faster cooling of the film. The resulting film structures are more stable and consistent in structure.