Method of producing cast products using elastic molds

Details Method of producing cast products using elastic molds Method of producing cast products using elastic molds

1992-10-13

1994-04-26

Timm, Catherine

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

264313, 264314, B29C 4136, B29C 4142

Patent

active

053064607

ABSTRACT:
A method of providing hollow cast products using a filling unit wherein a non-solid material is filled into elastic molds having open bag shaped interior filling sections by a filling nozzle insertable internally of the filling sections of the elastic molds and a blowing nozzle for blowing air into the filling section, which includes: partly filling the filling sections of the elastic molds with the non-solid material, and blowing air into the partly filled filling sections before the material solidifies to blow the material upward and solidify the material on the inner peripheral surface of the filling sections.

REFERENCES:
patent: 1510117 (1924-09-01), Von Vass
patent: 3222725 (1965-12-01), Smith
patent: 3301925 (1967-01-01), Engel
patent: 3778213 (1973-12-01), Di Settembrini
patent: 3873652 (1975-03-01), Ramacciotti
patent: 4101617 (1978-07-01), Friederich
patent: 4315037 (1982-02-01), Kelly
patent: 4414164 (1983-11-01), Roba et al.
patent: 4802839 (1989-02-01), Hidawa
patent: 4854843 (1989-08-01), Takeda et al.

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