Brightness enhancement with textured roll

Details Brightness enhancement with textured roll Brightness enhancement with textured roll

B - Operations, Transporting

21

B

13/1, 80/49, 80/

B21B 27/02 (2006.01) B21B 1/22 (2006.01) B21B 27/00 (2006.01) B21B 27/10 (2006.01)

Patent

CA 2028711

A method for rolling material between rotating rolls utilizing a lubricant, at least one of the rolls having an anistropic working surface that comprises a topography of smooth bearing areas spaced apart by at least one micron-size groove extending around and along the face of the roll in the general direction of rolling. The groove receives and conducts lubricant freely therealong during the rolling process, i.e., as the material to be rolled is directed through the rotating rolls, and is compressed between the rolls, the smooth-bearing areas force lubricant from the areas to the location of the groove in the roll. In this manner, the material is rolled under boundary lubrication conditions.

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