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:
Apr. 03, 1990
Filed:
Jun. 20, 1988
Frederick J Buja, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Apparatus for operating an injecting molding process utilizing an acceptable part and process window for an injection molding machine having a pair of separable mold elements forming a mold cavity with a part-line therebetween, means for opening and closing the mold elements, and means for introducing a moldable material into the mold cavity at a first pressure and for exerting a second pressure on the moldable material as it cures in the cavity. The apparatus includes means for generating an acceptable part and process window for the machine by operating the machine by closing the mold elements, means for introducing a moldable material into the mold cavity, and measuring the separation of the mold elements resulting from the introduction of the moldable material into the mold cavity. At least one operating parameter is incrementally changed over a plurality of molding cycles until unacceptable parts are produced to generate minimum part-line and time values for that machine and process. At least one operating parameter is incrementally changed over a plurality of molding cycles until unacceptable parts are produced to generate maximum part-line and time values. Then, an acceptable part and process window is generated utilizing the minimum and maximum part-line and time values.