Machine for manufacturing polystyrene foam products

Plastic article or earthenware shaping or treating: apparatus – With mechanical means forming or expanding pores

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425589, 425595, 425451, 4254517, 425453, 425457, 425DIG221, B29C 3924, B29C 4564

Patent

active

053705157

ABSTRACT:
A machine for manufacturing polystyrene foam products, whereby a mold comprising a first half and a second half mold defining a molding chamber when closed, is loaded, with the two half molds locked in the closed position, onto the machine and into an operating position wherein the mold is connected automatically to granular polystyrene and utility fluid supply lines. In this operating position, the two half molds are rendered mutually mobile with the first half mold, connected to the utility supply lines, remaining locked to a fixed frame on the machine, and the second half mold remaining locked to a mobile frame on the machine.

REFERENCES:
patent: 3141192 (1964-07-01), Benedetto
patent: 3837769 (1964-09-01), Erlenbach
patent: 4106884 (1978-08-01), Jegelka
patent: 4315727 (1982-02-01), Black
patent: 4976602 (1990-12-01), Yamazaki
patent: 5234337 (1993-08-01), Hehl
Kunststoffe, vol. 79, No. 10, Oct. 1988, pp. 984-990, Munich, DE; R. K. Hasloch: "EPS-Formteil-und Blockverabeitung" *p. 986, column 2*.
Modern Plastics International, vol. 18, No. 10, Oct. 1988, pp. 42-45, Lausanne, CH; P. Mapleston: "New technologies broaden scope for bead molding equipment" *p. 44, columns 2-3.

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