Method for producing pulling rods for use in manufacturing sheet glass
AssigneeCorning Incorporated
InventorDavid S. Kaiser
Life of this patent
Estimating the term…
Abstract
Pulling rolls (13) for glass ribbons (11) and methods for manufacturing such rolls are provided. The rolls include a shaft (17), a plurality of heat-resistant discs (15) mounted on the shaft in face-to-face contact, and a pair of fittings (25 or 25,31) affixed to the shaft which apply an axial compressive force to the discs. The magnitude of the axial compressive force is adjusted so that the portions (27) of the roll surface (33) which contact the glass ribbon during use have a Shore D hardness at room temperature of between 30 and 55. The rolls achieve a long service life without applying excessive force to the glass ribbon or generating high levels of particulate contamination.
Claims5
A method for producing a roll for pulling a glass ribbon comprising:
- (a) providing a shaft, two fittings, and a plurality of heat-resistant discs, said discs comprising refractory ceramic fibers, mica, and a heat resistant binder;
- (b) assembling the plurality of heat-resistant discs on the shaft and compressing the discs between the fittings;
- and
- (c) monitoring the amount of force used in step (b) to compress the discs and adjusting the number of discs if said force is outside a predetermined range;
- wherein:
- (i) the roll has a roll surface, one or more portions of which are adapted to contact the glass ribbon during use of the roll;
- and
- (ii) the predetermined range in step (c) is selected so that the one or more portions have a Shore D hardness at room temperature of between 30 and 55.
Dependencies are inferred from the claim text.