Method and apparatus for preventing air entrapment in a rolled w

Details Method and apparatus for preventing air entrapment in a rolled w Method and apparatus for preventing air entrapment in a rolled w

1995-02-13

1996-05-21

Darling, John P.

Winding, tensioning, or guiding

Convolute winding of material

Pressure element against coil

B65H 1826

Patent

active

055182011

ABSTRACT:
An air-displacement roller bears against a film roll and extends to the ends of the film roll. A film web is fed to a winding core via a contact cylinder and is wound to form the film roll. The air layers carried along by the roll and the film web are included between the particular uppermost roll plies and for the most part are pressed out of the film roll via the end faces of the latter by the air-displacement roller. Each of the two roller ends is movable via a pressure mechanism articulated on a roller holder, the air-displacement roller being pressed against the film roll with a linear force lower than 10 N/cm to higher than 0.2 N/cm.

REFERENCES:
patent: 3692252 (1972-09-01), Perconti
patent: 4180216 (1979-12-01), Dahl et al.
patent: 4343440 (1982-08-01), Engl
patent: 4491283 (1985-01-01), Pav et al.
patent: 4576344 (1986-03-01), Sasaki et al.
patent: 4811915 (1989-03-01), Smith
patent: 4830303 (1989-05-01), Hagens et al.
patent: 4832274 (1989-05-01), Hawkins
patent: 5026005 (1991-06-01), Ehrola

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