Method of making mold used in slip casting process

Details Method of making mold used in slip casting process Method of making mold used in slip casting process

1987-07-24

1989-04-04

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Anti-stick or adhesion preventing coating

264133, 264135, 264219, 264225, 264250, 264261, 264264, 264265, 264275, 264300, 249113, 249134, 249141, B29C 3338, B29C 3910, B29C 3912, B29C 6712

Patent

active

048184578

ABSTRACT:
A method of making a mold used in a pressure slip casting process, including the steps of: preparing at least two porous bodies each defining a filter layer having a plurality of channels formed therein for allowing water and air to flow therethrough; placing a reinforcing iron frame and one of the porous bodies on a bottom board with a parting agent applied to its surface; applying a sealing resin to the surface of the other porous body opposite to a molding surface thereof and to a portion of the surface of the bottom board between the box and the porous body; filling up the space between one of the porous bodies and the reinforcing iron frame with a filler; and preparing a second part of the pressure mold. This second part preparing step includes the sub-steps of: turning the first part upside down together with the one porous body and the reinforcing iron frame to direct its parting face upward and applying a parting agent to the parting face; overlaying the other of the porous bodies on the one porous body; overlaying a second reinforcing iron frame on the first reinforcing iron frame; applying an adhesive to the sealing resin and the inner side of the overlaid second reinforcing iron frame after the sealing resin has cured; filling up the space between the overlaid second iron frame and the other porous body with filler; and parting the second part from the first part after the filler has cured.

REFERENCES:
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patent: 2964822 (1960-12-01), Tomkins
patent: 3156751 (1964-11-01), Valdes
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patent: 3993727 (1976-11-01), Skriletz
patent: 4100853 (1978-07-01), Clancy
patent: 4413966 (1983-11-01), Mills
patent: 4528152 (1985-07-01), Aoyama
patent: 4591472 (1986-05-01), Gerster

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