Plastic article or earthenware shaping or treating: apparatus – Means providing a shaping orifice – Including means forming products with distinct portions of...
Patent
1981-07-20
1983-05-10
Thurlow, Jeffery R.
Plastic article or earthenware shaping or treating: apparatus
Means providing a shaping orifice
Including means forming products with distinct portions of...
264541, 2642091, 425376A, 425381, 425466, B29D 2304
Patent
active
043827667
ABSTRACT:
A mold has a core surrounded by an outer sleeve which defines with the core an annular axially extending passage. An adjustment element in the form of a ring or sleeve is displaceable in this passage so as to vary the radial dimension of a tubular blank that is extruded from the outlet end of the passage. The adjustment ring or sleeve may be elastically deformable by means of hydraulic cylinders or screws so as to create the desired thickness at the desired location, and may even be displaced during operation of the apparatus so as to vary the thickness of the blank from one region to another in the direction in which it is extruded.
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Striker Michael J.
Thurlow Jeffery R.
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