Method and a mould for producing an insulating unit, in particul

Details Method and a mould for producing an insulating unit, in particul Method and a mould for producing an insulating unit, in particul

1977-03-25

1978-08-29

Pavelko, Thomas P.

Plastic and nonmetallic article shaping or treating: processes

Treatment of material by vibrating, jarring, or agitating...

By reciprocating or vibrating mold

249121, 249141, 264128, 264263, 264275, 264278, 264DIG6, B28B 108

Patent

active

041103882

ABSTRACT:
When producing insulating units, in particular building units, plaster of Paris was previously poured into the mold, bloated polystyrene pearls being prekneaded into said plaster. Plaster of Paris has also been poured into molds, wherein a lining of an aggregate of fused, bloated polystyrene pearls were prearranged. The bloated polystyrene pearls according to the invention are first densely packed in the mold, whereupon plaster of Paris, cement or another hydraulic binding material is filled into the mold through a net or a perforated plate, said net or perforated plate keeping the pearls densely packed during the casting so as to ensure that they do not reposition as a consequence of their buoyancy in the cast, liquid binding material.

REFERENCES:
patent: 2194036 (1940-03-01), Talalay
patent: 2903389 (1959-09-01), Fujita
patent: 3247294 (1966-04-01), Sabouni
patent: 3608010 (1971-09-01), Stayner
patent: 3787544 (1974-01-01), Barnette
patent: 3829542 (1974-08-01), DeRomano
patent: 3869295 (1975-03-01), Bowles

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