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:
Feb. 22, 2011
Filed:
Jan. 13, 2010
Thomas E. Nahill, Amherst, NH (US);
Sam Kalmouni, Pembroke, NH (US);
Nikhil Mani, Billerica, MA (US);
Keith Barker, Candia, NH (US);
Brian Lynch, Merrimack, NH (US);
Thomas E. Nahill, Amherst, NH (US);
Sam Kalmouni, Pembroke, NH (US);
Nikhil Mani, Billerica, MA (US);
Keith Barker, Candia, NH (US);
Brian Lynch, Merrimack, NH (US);
Graham Packaging Company, LLP, York, PA (US);
Abstract
Method and apparatus for controlling the delivery of polymer material in a sequential injection molding process. In one embodiment, the method provides: delivering a first shot of a first material simultaneously to a plurality of mold cavities; independently sensing for each cavity a property that is indicative of a volume or flow of material that is delivered to the corresponding cavity during the step of delivering the first shot; independently stopping the step of delivering the first shot to one or more cavities according to a program that uses as a variable a signal indicative of the property sensed for the corresponding cavity during delivery of the first shot; and delivering a second shot of a second material simultaneously to the cavities subsequent to the step of stopping the step of delivering the first shot.