Plastic article or earthenware shaping or treating: apparatus – With foraminous or absorbent means for removal of vehicle or...
Patent
1974-05-23
1976-05-25
Spicer, Jr., Robert L.
Plastic article or earthenware shaping or treating: apparatus
With foraminous or absorbent means for removal of vehicle or...
100211, 425352, 425406, 425 3, 264 86, B28B 302, B29C 300
Patent
active
039589080
ABSTRACT:
The specification describes an apparatus and a method for the production of eramic mouldings, in the case of which a suspension of moulding composition particles is introduced into a filling space formed between two punches which can be relatively moved towards each other. The liquid is removed via a filter formed in a punch provided with filter openings. The supply of the suspension is terminated after filling of the filling space with the supply duct shut off. The volume of the system comprising the filling space, the supply duct shut off from the outside and a space with a deformable limiting wall is decreased with a corresponding increase in pressure in this system and then in a conventional manner the final pressure is produced by relative movement of the punches. In the preferred form the filling space is isolated from the remainder of the filling system during the final compaction and forming of the moulding. The invention is preferably applied to the production of magnetized ferrite mouldings.
REFERENCES:
patent: 2519661 (1950-08-01), Johnson
patent: 2730281 (1956-01-01), Prohaska
patent: 3041153 (1962-06-01), Elder et al.
Dorst-Keramikmaschinen-Bau Inh. Otto Dorst u. Dipl.-Ing. Walter
Spicer, Jr. Robert L.
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