Vacuum tank for vacuum sizing apparatus

Details Vacuum tank for vacuum sizing apparatus Vacuum tank for vacuum sizing apparatus

1994-08-30

1995-11-07

Warden, Robert J.

Plastic article or earthenware shaping or treating: apparatus

Including means advancing continuous length work through...

425 86, 4253261, 425388, B29C 4788

Patent

active

054643350

ABSTRACT:
A vacuum tank for a vacuum sizing apparatus is provided. The vacuum tank is especially suited to control with precision the size and cooling of small sized plastic extrudate. The vacuum tank has coolant tubes between the double walls of the tank so that the coolant is not directly exposed to the extrudate. A water make-up tube having very small holes in it is disposed below the surface of the water in the vacuum tank so that make-up water will enter the tank with a minimum of turbulence being created. Slots provided in a rotatable water over-flow tube permit the level of the water within the vacuum tank to be adjusted and the slots provide a non-turbulent exit of over-flow water from the vacuum tank. A pre-skin block is positioned within the vacuum tank and is designed to minimize turbulence of water at the pre-skinning position within the tank.

REFERENCES:
patent: 3538210 (1970-11-01), Gatto
patent: 3576929 (1971-04-01), Turner et al.
patent: 4220620 (1980-09-01), Clifford
patent: 4783291 (1988-11-01), Pagan
patent: 5008051 (1991-04-01), DeCoursey et al.
patent: 5340295 (1994-08-01), Preiato et al.
patent: 5346379 (1994-09-01), Wolfl et al.

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