Patent ID: 8551249
Filing Date: 2013-10-08
Classification: B33Y,B65H,C23C

Abstract:
1. A cassette for supporting a length of a film substrate during a gaseous vapor deposition process, the film substrate having a predetermined width dimension at the gaseous deposition temperature, the cassette comprising: a central shaft having an axis therethrough; a first and a second end plate, each end plate being mounted to the shaft, each end plate comprising a central hub from which radiate a plurality of angularly spaced spokes, each end plate having a spiral rib mounted to the interior surface of the spokes thereof, each rib having a cross sectional configuration in a radial plane containing the axis of the shaft, the cross sectional configuration exhibiting substantially linear major edges, the interspoke spacing is at least three hundred millimeters (300 mm) and is greater than the width dimension exhibited by a film substrate at a gaseous deposition temperature, and the width dimension of the rib on each end plate is between about 0.5% to about 2.0% of the interspoke spacing.