Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1984-03-02
1986-04-01
Woo, Jay H.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
264 39, 425566, 425DIG227, B29C 4522
Patent
active
045795207
ABSTRACT:
This invention relates to an improved valve gated injection molding system in which the heated nozzle has a nose portion which extends through a cylindrical opening in the cavity plate to the cavity. The valve gate extends through the nose portion and is tapered so that the forward face of the nose portion can be machined to a predetermined length to provide a gate of a particular size. This has the advantage of improving heat transfer to the gate area and reducing the accuracy required of the moldmaker in that both the valve pin and the matching seat in the gate are provided by the manufacturer. Furthermore, each size of nozzle can be adapted for several different gate sizes which reduces manufacturing and inventory costs.
REFERENCES:
patent: 3076225 (1963-02-01), Sherbondy
patent: 3211347 (1965-10-01), Phillips, Jr.
patent: 4026518 (1977-05-01), Gellert
patent: 4043740 (1977-08-01), Gellert
patent: 4286941 (1981-09-01), Gellert
patent: 4449915 (1984-05-01), van den Brink
patent: 4468191 (1984-08-01), Gellert
Mold-Masters.RTM. Melt Conveying Tech with Master-Shot.RTM. Nozzles-Company Magazine.
Heitbrink Timothy W.
Woo Jay H.
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