Plastic article or earthenware shaping or treating: apparatus – Female mold and means to shape parison directly by internal... – Including means to prepare parison
Patent
1987-04-01
1988-05-24
Chiesa, Richard L.
Plastic article or earthenware shaping or treating: apparatus
Female mold and means to shape parison directly by internal...
Including means to prepare parison
2642098, 264540, 425192R, 425381, 425466, 425532, B29C 4904
Patent
active
047462833
ABSTRACT:
Plastic blow molding equipment of a type including a die housing with a tubular chamber disposed therein. The die housing includes an inner portion on the inside of the tubular chamber and an outer portion on the outside of the tubular chamber. The tubular chamber has an outlet therein. Head tooling is attached to the die housing and this head tooling has a tubular passageway therethrough of an unequal diameter throughout the length thereof. The tubular passageway in the head tooling is in communication with the outlet in the die housing. An adjusting mechanism is associated with the head tooling for forming a parison outlet of different sizes. The adjusting mechanism includes an inner section inside of the tubular passageway and an outer section on the outside of the tubular passageway. The inner section includes a plurality of inner plates each having a progressively larger outer diameter from one end of the head tooling to the other end thereof, and the outer section includes a plurality of outer plates having an inner surface with a progressively larger diameter from one end of the head tooling to the other end thereof.
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"Large-Part Engineered Blow Molding: The State of the Art", Plastics Technology, Mar. 1987, pp. 65-69.
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