Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – With means to heat or cool
Patent
1991-02-19
1992-03-17
Heitbrink, Tim
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
With means to heat or cool
26432814, 425567, 425569, B29C 4572
Patent
active
050964100
ABSTRACT:
The sprue bushing is mounted within a support housing for an injection molding machine. Melt viscosity of plastic employed is controlled by moving water through the bushing inner tube during the presence of the plastic. The bushing has an outer sleeve containing a longitudinal central bore. An inner tube is mounted within the bore, but spaced apart from an inner wall of the bore. Baffles mounted on opposite sides of an outer wall of the inner tube prevent water movement around an upper portion of the tube. A lower portion of the tube having a smaller outer diameter than the upper portion permits the water to flow under the baffles and through the bushing.
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Heitbrink Tim
Larson Herbert W.
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