Plastic article or earthenware shaping or treating: apparatus – Stock pressurizing means operably associated with downstream... – Including heating or cooling means
Patent
1987-04-30
1989-01-10
Silbaugh, Jan H.
Plastic article or earthenware shaping or treating: apparatus
Stock pressurizing means operably associated with downstream...
Including heating or cooling means
264 459, 425381, 425466, 425817C, B29C 4712, B29C 4790
Patent
active
047970839
ABSTRACT:
The extrusion press comprises a block and a displacing body mounted in the block. The block includes an inlet duct, two feed ducts connected to it, transversely widened spaces connected to them and an outlet duct. The displacing body comprises a mounting portion and a guide portion and is located downstream of the inlet duct. It separates both feed ducts and both transversely widened spaces and projects with a sword-like piece of the guide portion into the outlet duct to form outlet gaps. It ends upstream of a mouth of the outlet duct providing an inner expansion chamber. The displacing body is free of a supporting member and held fixed from above and below by its mounting portion so that the thermoplastic material flow surrounds the sides of the sword-like piece running in the flow direction and surrounds the sword-like piece. At least the sword-like piece has a tempering passage system distributed over its length and breadth which is connected with a plurality of lateral connecting tubes for feeding and removing a tempering medium upstream of the sword-like piece.
REFERENCES:
patent: 3608145 (1971-09-01), Baker et al.
patent: 3764642 (1973-10-01), Boutillier
patent: 3792951 (1974-02-01), Meyers
patent: 4056344 (1977-11-01), Lemelson
patent: 4201480 (1980-05-01), Brand
patent: 4484883 (1984-11-01), Honda et al.
patent: 4655704 (1987-04-01), Dekel
patent: 4669965 (1987-06-01), Murakami
Dubno Herbert
Heitbrink Jill L.
Reifenhauser GmbH & Co. Maschinenfabrik
Silbaugh Jan H.
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