Patent ID: 9604867
Date: 2017-03-28
CPC Classifications: C03B,Y10T

Claim:
1. A heat-resistant roll comprising a roll portion containing 5% by weight or more of clay, wherein: a surface part of the roll portion is made denser compared with an inside of the roll portion, the surface part has an arithmetic average surface roughness Ra measured by a method defined by JIS B 0601-1994 of 5.0 μm or less, the surface art of the roll portion is made of a material containing 5% by weight or more of clay; the roll portion contains 90% by weight or more of an inorganic fiber, an inorganic filler and the clay in total; and the inorganic filler consists of at least one selected from the group of mica, wollastonite, silica and alumina.