Machine for forming expanded resinous products

Details Machine for forming expanded resinous products Machine for forming expanded resinous products

1978-10-10

1980-11-11

Anderson, Philip

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

264 51, 264DIG10, 425351, 425422, 425437, 425441, 425444, B29D 2700

Patent

active

042330068

ABSTRACT:
Apparatus for molding expandable thermoplastic resin particles having opposed mold platens. The platens having male and female mold members mounted thereon. The first platen having heated and cooled male mold members mounted thereon, and the second platen having heated and cooled female mold members mounted thereon. Tie bars extending between the first and second platens. Means for feeding expandable thermoplastic resin particles to the mold cavities defined by the male and female mold members when they are engaged together. Means for transfering the mold members from a first position wherein the heated and cooled mold members on the respective platens would be opposed to each other, and in a second position wherein the heated mold member on one platen would be opposed to the cool mold member on the other opposing platen. Means to clamp the mold members together during molding of the expandable thermoplastic resin particles.

REFERENCES:
patent: 3488411 (1970-01-01), Goldman
patent: 3676033 (1972-05-01), Buonaiuto
patent: 4106884 (1978-08-01), Jegelka

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