B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 45/17 (2006.01)
Patent
CA 2419426
A process for producing an injection molded article with a hollow rim portion (18) in an injection molding machine including the steps of injecting a short shot of injection molding material into a mold via an injection nozzle, permitting a mold cavity to fill in an unbalanced manner as a result of a gas channel (20) formed in a wall of the mold, closing the injection nozzle; and injecting a pressurized gas into the short shot of injection molding material, wherein the pressurized gas travels through the gas channel (20) into a rim portion (16) of the mold thereby expanding the injection molding material throughout the mold and simultaneously creating a hollow cavity (8) within the rim portion of the mold.
L'invention porte sur un procédé de production, dans une machine de moulage par injection, d'un article moulé par injection pourvu d'un rebord creux. Ce procédé consiste à injecter dans un moule, par une brève impulsion, un matériau de moulage via un ajutage ; remplir la cavité du moule de manière inégale du fait de la formation d'un canal de gaz dans une paroi du moule ; fermer l'ajutage d'injection ; et injecter un gaz sous pression par une brève impulsion dans le matériau de moulage. Le gaz sous pression se déplace dans le canal de gaz pour pénétrer dans une partie du rebord du moule, ce qui dilate le matériau de moulage dans le moule et c
Knicklebine Dave P.
Laabs Bruce A. Jr.
Rice Frank J.
Carlson Tool & Manufacturing Corporation
Mcfadden Fincham
National Sales Company L.l.c.
LandOfFree
Molded article having hollow rim portion and process for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Molded article having hollow rim portion and process for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Molded article having hollow rim portion and process for... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1916389