Process and device for cooling hollow synthetic material profile

Details Process and device for cooling hollow synthetic material profile Process and device for cooling hollow synthetic material profile

1981-09-10

1983-06-21

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264565, 2642091, 264237, 425 71, 425 72R, 4253261, 425378R, B29F 308

Patent

active

043893660

ABSTRACT:
A hollow synthetic profile is cooled during extrusion by direct heat exchange through the introduction of under-cooled liquid nitrogen under a pressure of 2 to 8 bar into the hollow interior by means of a boring in the arbor of the extrusion tool with an insulated capillary tube forming the cooling medium line.

REFERENCES:
patent: 3129461 (1964-04-01), Zavasnik et al.
patent: 3195184 (1965-07-01), Svec
patent: 4069282 (1978-01-01), Gutermuth et al.
patent: 4088724 (1978-05-01), Kuhnert
patent: 4190473 (1980-02-01), Soecknick et al.
patent: 4212171 (1980-07-01), Soecknick

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