Method and apparatus for cooling molten tube

Details Method and apparatus for cooling molten tube Method and apparatus for cooling molten tube

1982-03-29

1984-02-28

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Production of continuous or running length

264564, 264569, 425 72R, 425 74, 4253261, B29F 308

Patent

active

044341296

ABSTRACT:
This invention provides an improvement in a method of cooling molten extruded tube produced by a blown-tube process. The improvement comprises cooling the tube utilizing the heat of evaporation of moisture in steam. The steam is brought into contact with the molten tube after extrusion of the molten tube from an extrusion die, whereby the steam is permitted to expand prior to, during or subsequent to contact with the molten tube. An apparatus is also provided for carrying out the above-described method.

REFERENCES:
patent: 2461975 (1949-02-01), Fuller
patent: 2461976 (1949-02-01), Schenk
patent: 3061876 (1962-11-01), Lloyd et al.
patent: 3127458 (1964-03-01), Scott, Jr. et al.
patent: 3299192 (1967-01-01), Lux
patent: 3321563 (1967-05-01), Rettig et al.
patent: 3576929 (1971-04-01), Turner et al.
patent: 3754067 (1973-08-01), St. Eve et al.
patent: 3888609 (1975-06-01), St. Eve et al.
patent: 4115047 (1978-09-01), Stelmack

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