Screw extrusion press having temperature-control means

Details Screw extrusion press having temperature-control means Screw extrusion press having temperature-control means

1979-03-20

1980-11-25

Thurlow, Jeffery R.

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Including heating or cooling means

165 71, 366 79, 366144, B29F 308

Patent

active

042355818

ABSTRACT:
A screw extrusion press having longitudinally extending bores in the wall thereof for heating or cooling the cylinder wall by passage therethrough of a temperature control medium. The passages are divided into sets of three adjacent passages with each set of three passages so connected to one another by annular passages which are divided off into respective portions for each set that medium supplied to an inlet manifold provided in a connecting flange at one end of the cylinder passes through a radial bore into a first passage of each set, flows along that passage to the other end of the cylinder, passes into a respective portion of the annular passage, passes into the second passage of each set, passes back along the cylinder into a respective portion of the annular passage and passes into the third passage of the set to pass along the cylinder, through a radial bore into an outlet manifold in a connecting flange at the other end of the cylinder and thence to an outlet connection.

REFERENCES:
patent: 2796632 (1957-06-01), Willert
patent: 2958099 (1960-11-01), Chisholm et al.
patent: 3030193 (1962-04-01), Marullo et al.
patent: 3900188 (1975-08-01), Seufert

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