Pull-rolls for use in glass manufacturing processes and methods for making the same

摘要

Pulling rolls for used in forming glass ribbons with reduced defects and cracking are disclosed. In one embodiment, the pulling roll may include a shaft member and a roll assembly. The roll assembly may be positioned on the shaft member for rotation with the shaft member. The roll assembly may include an axially compressed stack of ring elements formed from an inorganic material such as mica paper. The mica paper may include layers of overlapping mica platelets oriented substantially in parallel with one another. A contact surface of the roll assembly may have a Shore D hardness greater than or equal to about 10 and less than or equal to about 60.

主权项

1. A pulling roll comprising:
a shaft member; a roll assembly positioned on the shaft member for rotation with the shaft member, the roll assembly comprising an axially compressed stack of ring elements formed from mica paper, the mica paper comprising layers of overlapping mica platelets oriented substantially in parallel with one another, wherein:
a contact surface of the roll assembly has a Shore D hardness greater than or equal to about 10 and less than or equal to about 60; and wherein the ring elements are impregnated with a filler material such that a density of the roll assembly increases radially inward from the contact surface of the roll assembly.