Plastic article or earthenware shaping or treating: apparatus – With means applying coating material to work or work contact... – Separate means applying material directly to shaping means,...
Patent
1982-12-13
1984-05-22
Thurlow, Jeffery R.
Plastic article or earthenware shaping or treating: apparatus
With means applying coating material to work or work contact...
Separate means applying material directly to shaping means,...
72 60, 264570, 264573, 264320, 264323, 425380, 4253871, 425392, B30B 1130
Patent
active
044499043
ABSTRACT:
A hydrostatic extrusion apparatus whereby semicrystalline thermopolastic polymers can be hydrostatically extruded in a solid state is described. The apparatus includes an outer tooling support means; a container assembly aligned within one end of the outer support means and having pressure means contiguous therewith whereby pressure is applied to the apparatus to both rigidly align the tooling and provide sufficient pressure for extrusion of a polymer billet within the container assembly and a receiver assembly coaxially aligned with the container assembly in the other end of the tooling means. The container assembly includes a container means, sealing means to prevent leakage of hydrostatic fluid in the container means and a die portion on the inner forward surface of the container means. The receiver assembly includes a concentrically aligned mandrel which supports and aligns a mandrel-head in spaced relationship with the die portion of the container means. Means are also provided for receiving, lubricating and cooling the extrudate in the receiver assembly. A base portion supports the extrudate receiving assembly and coacts with the pressurizing means in the container assembly to rigidly align and clamp the tooling means together.
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Austen Alfred R.
Humphries Darral V.
Bethlehem Steel Corporation
Thurlow Jeffery R.
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