Cooled vacuum pull roll

Details Cooled vacuum pull roll Cooled vacuum pull roll

1990-07-11

1992-04-14

Flanigan, Allen J.

Heat exchange

Movable heating or cooling surface

Rotary drum

34124, 226 95, F28D 1102

Patent

active

051038986

ABSTRACT:
A pull roll in which the outer shell of a cooling roll through which a cooling medium flows has grooves in its outer surface forming lands which support a perforated skin. Communication is provided between the shell grooves and a segmented stator groove connected to a source of reduced pressure so that the vacuum exerts a pull on the web while the cooling medium cools the web through the skin.

REFERENCES:
patent: 1215236 (1917-02-01), Badenhausen
patent: 2299662 (1942-10-01), Thaler
patent: 3080150 (1963-03-01), Gross
patent: 3752227 (1973-08-01), Bulson
patent: 4207998 (1980-06-01), Schmid

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