| 摘要 |
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. |
