Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means between charger and mold to cut off flow of...
Patent
1998-10-16
2000-10-24
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means between charger and mold to cut off flow of...
425564, B29C 4523
Patent
active
06135757&
ABSTRACT:
A novel valve gated injection molding system and valve gate reduces the formation of gate vestiges on parts molded therewith and enhances cooling of the tip of the valve stem during the cooling portion of an injection molding cycle. Channels are provided and extend from an area adjacent the contact area of the sealing portions of the stem tip and gate to the melt channel of the injection nozzle. These channels allow material, which would otherwise form a thin film layer in the contact area of the sealing portions of the stem tip and gate, to be expressed through the channels and back to the injection nozzle. As the formation of thin films is inhibited, an increased contact area, in addition to the contact area of the tip and gate sealing portions, can be provided to improve the transfer of heat energy from the tip to the gate when the gate is cooled.
REFERENCES:
patent: 4781572 (1988-11-01), Boring
patent: 4923387 (1990-05-01), Gellert
patent: 5423672 (1995-06-01), Gordon
patent: 5695793 (1997-12-01), Bauer
patent: 5849343 (1998-12-01), Gellert et al.
Heitbrink Tim
Husky Injection Systems Ltd.
LandOfFree
Valve gated injection molding system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Valve gated injection molding system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Valve gated injection molding system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1958159