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US 2017/0324223 A1Published application
Position adjustment mechanism for a corona treatment apparatus
AssigneeIllinois Tool Works Inc.
InventorsRory A. Wolf, Eric J. Urban, Robert A. Kleinschmidt
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Abstract
According to an aspect of the present disclosure, a position adjustment mechanism is provided for automatically adjusting the position of an electrode relative to a ground roller in a corona treatment apparatus. The position adjustment mechanism is capable of detecting thickened areas in a web of material that is being treated and automatically adjusting the air gap to maintain the quality of the surface treatment of the web.
Claims18
A corona treatment apparatus for surface treating a web of material comprising:
- a frame;
- a rotatable ground roller mounted to the frame;
- a high-voltage electrode mounted to the frame and mounted proximate to the ground roller;
- a mount attached to the electrode for connecting the electrode to the frame;
- and
- a motor directly connected to the mount and configured to adjust the position of the mount and the electrode relative to the ground plate.
3 more elements
A method comprising:
- passing a web of material between a ground roller and an electrode, the web of material having a first thickness and a second thickness, the first thickness being greater than the second thickness;
- sensing the thickness of the web of material prior to entry of the web of material between the ground roller and the electrode;
- upon sensing the first thickness of the web of material, activating a motor to move the electrode a first predetermined distance away from the ground roller;
- and
- upon sensing the second thickness of the web of material, activating the motor to move the electrode a second predetermined distance away from the ground roller, the second predetermined distance being less than the first predetermined distance.
2 more elements
Dependencies are inferred from the claim text.