Process and equipment for the continuous production of block-sha

Details Process and equipment for the continuous production of block-sha Process and equipment for the continuous production of block-sha

1978-10-23

1980-04-29

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By gas forming or expanding

264 455, 264331, 264DIG14, 264DIG65, 264DIG84, 425115, 425224, 425329, 425817C, B29D 2704

Patent

active

042006031

ABSTRACT:
The instant invention is directed to a process for the continuous production of block-shaped foam and to the equipment used therefore. The process of the invention broadly involves the heating of the bottom film prior to application of the foamable mixture. In this way, the undesirable crust generally formed on the bottom of the foam blocks is substantially reduced and/or eliminated.

REFERENCES:
patent: 2957207 (1960-10-01), Roop et al.
patent: 3047449 (1962-07-01), Coble
patent: 3124627 (1964-03-01), Hood
patent: 3129270 (1964-04-01), Hood
patent: 3786122 (1974-01-01), Berg
patent: 3870441 (1975-03-01), Petzetakis
patent: 4026979 (1977-05-01), Palomares
patent: 4080125 (1978-03-01), Vinas

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