Plastic article or earthenware shaping or treating: apparatus – Female mold and charger to supply fluent stock under... – Mold having movable core or movable pin
Patent
1986-09-12
1988-08-16
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Female mold and charger to supply fluent stock under...
Mold having movable core or movable pin
249 58, 249 63, 249 66A, 249142, 425547, 425556, B29C 4543
Patent
active
047641037
ABSTRACT:
An injection mold for molding a tubular article having a closed end comprises a stationary mold half including a cavity plate having at least one cavity impression and a movable mold half which is movable between a closed position and an open position and is provided with at least one core portion for defining a cavity together with the cavity impression when the movable mold half is moved to the closed position. A recess is formed in the top face of the core portion and a telescopic mold piece is fitted into the recess in such a manner that a narrow space is formed therebetween. An air chamber having a relatively large volume is formed in the vicinity of the top face of the core portion. The air chamber is communicated with the space over the top face of the core portion by way of the narrow space between the mold piece and the recess, and with the atmosphere by way of a communicating passage formed in the core portion.
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Chiesa Richard L.
Fuji Photo Film Co. , Ltd.
Razzano Pasquale A.
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