Belt for shoe press

Details Belt for shoe press Belt for shoe press

D - Textiles, Paper

21

F

D21F 3/02 (2006.01) D21F 7/08 (2006.01)

Patent

CA 2548259

[Problem to be Solved] To provide a belt for shoe-press of paper machine having water drain grooves which is usable for long time by preventing occurrence of cracks in side walls of the water drain grooves. [Solving Means] The surface condition of the water drain grooves side wall is arranged to be pear-skin state having minute unevenness, preferably to have an average surface roughness in a range of 10 to 50 micrometers in at least upper two thirds of the total distance (depth) of side wall of the water drain grooves between the top of a groove and a bottom thereof. The water drain grooves having such roughness can be manufactured in the following arrangement. A rotary cutting blades are disposed in a position contacting with a roll around which a belt is wound, the roll and the rotary cutting blades rotate simultaneously and a groove cutting device is shifted in the width direction of a belt so that water drain grooves are formed in the belt, in which the belt running speed on the roll is set at 2 to 20 m/min, preferably 5 to 1.5 m/min, rotation speed of the rotary cutting blades is set at 1,000 to 8,000 rpm, preferably 3,000 to 6,000 rpm, and thus grooves can be manufactured.

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