| 摘要 |
A press is described for manufacturing plates, etc., having a press die which can be moved against a countermold for pressing, the press die being molded in accordance with the inner shape of the plate, etc., to be pressed, and having an elastic membrane closing a cavity in the countermold and mounted at its edge which is adapted to the dimensions of the edge of the finished plate. The membrane is provided with an annular slot corresponding to the base of the plate and is capable of having porcelain body in powder form distributed over it in the limits set by the mounting, when the press die is moved a distance away from the membrane, the cavity covered by the membrane being capable of being filled with a pressure medium which can be pressurized when the press die has been moved onto the porcelain body in powder form distributed over the membrane. The press die has a coating which is provided at the edge with a torus bulging towards the membrane. A self-contained annular groove may be provided in the edge of the membrane opposite this torus.
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