Web-tensioning apparatus
Assignee3M Innovative Properties Company
InventorJAMES J. SHIMEK
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Abstract
An apparatus that self-adjusts a plurality of web contact pads (20) positioned to evenly tension baggy webs. The apparatus comprises a transverse series of actuators (15) connected to web contact pads (20), where each actuator (15) is controlled pneumatically and self-adjusts to provide uniform tension across the width of a web.
Claims5
A web-tensioning apparatus comprising a first gas intake, a plurality of piston assemblies, each piston assembly connected to a web contact pad comprising a sintered plastic material to provide a web contact pad assembly, wherein each web contact pad assembly is independently controlled pneumatically and self-adjusts to provide uniform tension across the width of a web.
Dependencies are inferred from the claim text.