Molding apparatus for expanding beads of polystyrene material

Details Molding apparatus for expanding beads of polystyrene material Molding apparatus for expanding beads of polystyrene material

1981-04-01

1983-05-10

Anderson, Philip E.

Plastic article or earthenware shaping or treating: apparatus

With mechanical means forming or expanding pores

249 79, 264 51, 264334, 264DIG10, 425441, 425443, 425444, B29D 2700

Patent

active

043827578

ABSTRACT:
An improved molding apparatus for expanding beads of polystyrene material into large blocks in the manufacture of insulating material. The mold apparatus has walls made from a plurality of tubular wall members arranged in horizontal, side-by-side relation. The wall members are mounted transversally within encircling frames. Steam is supplied to each wall member, and from within each wall member, into the mold cavity to expand the polystyrene beads held therein into a block. An improved device is also provided to remove the block from the mold cavity.

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