Plastic article or earthenware shaping or treating: apparatus – Including means advancing continuous length work through...
Patent
1978-07-10
1980-04-22
Anderson, Philip
Plastic article or earthenware shaping or treating: apparatus
Including means advancing continuous length work through...
138106, 138108, 138175, 248 49, 248 74B, 264 51, 264562, 264101, 264178R, 264DIG78, 285 53, 285235, 285236, 285237, 285374, 425817C, 425DIG60, B29D 2700, B29F 302
Patent
active
041993101
ABSTRACT:
A foam extrusion apparatus and method employs an extruder on an upper level extruding foamable extrudate into the upper end of a large elongated barometric leg which extends at a relatively shallow angle into a pool of water at a lower level. A conveyor in the barometric leg extends through a large radius in the pool to guide the extrudate from the pool for further processing. The leg is in the form of an elongated pipeline fabricated from sections and supported on an inclined ramp. Some of the sections are securely anchored to the ramp to resist axial forces when the leg is evacuated. The sections may be reinforced concrete or fabricated reinforced steel of a variety of sectional shapes. Each section is sealed end-to-end so that a vacuum within the leg will draw water from the pool into the leg leaving a vacuum chamber at the upper end of the leg in which the extrudate expands. The leg may be provided with a number of windows for visual access and the two levels may be the floors of two horizontally and vertically separated plants. The lower end of the leg may be provided with a baffle where it enters the pool.
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Anderson Philip
Condec Corporation
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