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:
Nov. 06, 1990
Filed:
Feb. 16, 1990
Applicant:
Inventor:
Steven A White, Ivinghos, GB;
Assignee:
W. R. Grace & Co.-Conn., Lexington, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264148 ; 264211 ; 264268 ; 264294 ; 264300 ; 524232 ; 524262 ; 524265 ; 524557 ; 524560 ; 524563 ; 524571 ; 524574 ; 524575 ; 524577 ; 524583 ; 524585 ; 525106 ; 525199 ; 525227 ; 525235 ; 525236 ; 525479 ;
Abstract
Molded articles such as gaskets for container caps are made from a thermoplastic composition at high speed, for instance above 100 per minute, by continuously cutting a continuous supply of molten thermoplastic composition into molten pieces and transferring the molten pieces to a molding position at which they are molded into the gaskets or other desired articles, and the composition includes a melt-release material that continuously replenishes a melt-release layer on the surfaces by which the molten composition is cut and transferred to the molding position.