D - Textiles – Paper – 21 – G
Patent
D - Textiles, Paper
21
G
92/21.5
D21G 1/02 (2006.01) B23P 11/02 (2006.01) D21F 3/08 (2006.01) F16C 13/00 (2006.01)
Patent
CA 1066101
ABSTRACT OF THE DISCLOSURE: A roll of the type which is used in a paper machi- ne has an inner roll body covered with a plurality of strips. The strips include pairs of strip portions situated one next to the other along the roll body and covering the outer surface thereof. Each pair of strip portions extends through 360° around the roll body with each pair of strip portions including one strip portion at least part of which circumferentially surrounds and overlaps at least part of the other of each pair of strip portions. This one of each of strip portions circumferentially presses ra- dially inwardly against at least said part of the other of each pair of strip portions to press the other of each pair of strip portions against the outer surface of the roll body. The one of each pair of strip portions has a coefficient of thermal ex- pansion greater than the other of each pair of strip portions and when initially placed on the roll body is in a heated condi- tion at a temperature sufficiently high so that upon cooling the one of each pair of strip portions will contract against the other of each pair of strip portions to provide the circumferential inwardly directed radial pressure acting to press the other of each pair of strip portions against the outer surface of the inner roll body.
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