Apparatus for internal cooling in extrusion of tube-shaped objec

Details Apparatus for internal cooling in extrusion of tube-shaped objec Apparatus for internal cooling in extrusion of tube-shaped objec

1983-04-27

1985-07-02

Thurlow, Jeffery

Plastic article or earthenware shaping or treating: apparatus

Including means advancing continuous length work through...

264558, 264560, 264565, 425 72R, 425143, 425378R, B29F 308

Patent

active

045265267

ABSTRACT:
A method and apparatus for internal cooling of extruded tube-shaped objects wherein liquid nitrogen is inserted into the tube and evaporated there out of contact with the tube on account of the heat from the tube whereafter only evaporated nitrogen is made to pass through the inner surfaces of the extruded tube. The apparatus for evaporation of the liquid nitrogen and for conduction of the gasified nitrogen comprises a cylinder-shaped member with good thermal conductivity placed in the shaped tube adjacent to the extruder nozzle. Provided in the closed end of the cylindrical member are nozzle members with a connection to a supply line for liquid nitrogen inserted through the extruder nozzle. Provided in the opposite end of the cylindrical member are openings for passage of the evaporated nitrogen out towards the shaped tube. The temperature in the evaporating arrangement near the said openings is regulated in such a manner that the temperature is always higher than the evaporation temperature of the nitrogen at the pressure prevailing in the tube, whereby all supplied nitrogen is evaporated before contacting inner surfaces of the extruded tube.

REFERENCES:
patent: 3170011 (1965-02-01), Cheney et al.
patent: 3522337 (1970-07-01), Ball
patent: 3618169 (1971-11-01), Coast
patent: 4069282 (1978-01-01), Gutermuth et al.
patent: 4088724 (1978-05-01), Kuhnert
patent: 4115048 (1978-09-01), Alderfer et al.
patent: 4212171 (1980-07-01), Soecknick
patent: 4389366 (1983-06-01), Hoesslin et al.

Affiliated with

Also associated with

Rating

Apparatus for internal cooling in extrusion of tube-shaped objec does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for internal cooling in extrusion of tube-shaped objec, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for internal cooling in extrusion of tube-shaped objec will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-378985