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(11) | EP 0 389 234 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Liquid-tight slip-casting molds and method for production thereof |
| (57) A mold (1) for cast-molding a slip under pressure is provided. The mold comprises
a divisible casting mold (1) including at least two mold portions (8,9) to form a
slip-depositing mold cavity (18) when mated together; a sealing material layer (11)
attached onto at least the whole mating filter surface (16) of at least one mold portion
to be mated; and a resilient material layer (10) attached onto one of the sealing
material layer (11) and another mating filter surface (16), along slip-depositing
divisible surfaces (12) of the filter layers (2); whereby the mold portions (8,9)
mated together are provided with a resilient liquid-tight zone (14) between the mating
filter surfaces (16). The mold is readily produced by coating at least the whole mating
filter surfaces (16) of at least one mold portion (8,9) to be mated with a sealing
compound; applying a releasing material between the mating mold portions (8,9), mating
the mold portions, and hardening the sealing compound to provide a sealing material
layer (11); and then bonding a resilient material sheet (10) onto one of the resulting
sealing material layer (11) and another mating filter surface(16), along slip-depositing
divisible surfaces (12) of the filter layers. |