Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1986-04-08
1991-07-30
Matecki, Katherine A.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 672, B65H 1920
Patent
active
050353730
ABSTRACT:
An improved turret type winder incorporates articulated constant contact lay-on rolls mounted concentrically with chucks at the ends of the arms of the turret winder. The articulated constant contact lay-on rolls are continuously repositioned radially during winding and are able to either maintain constant pressure or to reduce lay-on roll pressure as the film bundle diameter increases. Web tension variations during transfer operations are minimized by maintaining an essentially constant wrap angle on the lay-on roll between the web and the lay-on roll. An improved web feed-in mechanism is incorporated to reduce web tension variations due to drag forces. An improved method for winding film bundles is also provided whereby the nip pressure is varied during winding and then maintained at an about constant value during turret rotation.
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Ferb Robert J.
John Brown Inc.
Matecki Katherine A.
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