Winding – tensioning – or guiding – Material guide or guard – With particular guide surface formation or treatment
Patent
1998-11-16
2000-09-05
Nguyen, John Q.
Winding, tensioning, or guiding
Material guide or guard
With particular guide surface formation or treatment
242548, 242566, 242909, 2261961, B65H 2304, B65H 2300
Patent
active
061130265
ABSTRACT:
A bow spreader bar employed in a plastic film processing arrangement incorporates an extruded member and a low-friction plastic wear cover. The bow spreader bar is positioned in advance of the film take-up roll and presses into the film web to eliminate folds, wrinkles, or creases. The extrusion can be of aluminum or another light-weight material having a T-shaped profile that is rounded on a side that faces the film so that the extrusion has an arcuate front surface. The associated wear cover is made of a wear resistant plastic material and is disposed on the arcuate surface of said extrusion. Preferably, the extrusion is formed with one or more tubular portions and can be fitted for fluid cooling. The arcuate surface of the extrusion can be provided with a low-friction surface treatment.
REFERENCES:
patent: 3463377 (1969-08-01), Lucas
patent: 5585120 (1996-12-01), Pottorff
patent: 5700489 (1997-12-01), Pottorff
Nguyen John Q.
Pearl Technologies, Inc.
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