Shaping heat-softenable sheets by roll forming

Details Shaping heat-softenable sheets by roll forming Shaping heat-softenable sheets by roll forming

C - Chemistry, Metallurgy

03

B

49/33

C03B 11/00 (2006.01) C03B 23/033 (2006.01)

Patent

CA 1054796

SHAPING HEAT-SOFTENABLE SHEETS BY ROLL FORMING Robert G. Frank, Murrysville, Pennsylvania 15668 Abstract of the Disclosure In forming heat-softened sheets by the roll form- ing method, continuously moving sheets of heat-softenable material, such as glass sheets, are conveyed continuously in a series along a conveyor into a roll forming station, where a pair of sets of rotating forming rolls move relatively to- ward one another to provide rolling engagement against the opposite major surfaces of each moving glass sheet in succes- sion in spaced relation to the conveyor for sufficient time to shape the sheets. The rotating forming rolls are segmented into short lengths to reduce scuff marks caused by substantial differences in peripheral speed at different portions along the the axial length of the rotating forming rolls. The present invention relates to a further improvement in roll forming apparatus that minimizes still further the likelihood of pro- ducing scuff marks when sheets are shaped by roll forming.

221549

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