PERFECTION OF CORRUGATING ROLLS Russian patent published in 2014 - IPC B31F1/20 

FIELD: process engineering.

SUBSTANCE: invention relates to corrugating roll to be used for corrugation of heavyweight paper or cardboard. Heatless corrugating roll has outer contact corrugating surface. Proposed roll comprises a channel made between opposite sides air with ambient temperature to be forced by vacuum source there through from the roll contact surface vial roll into the channel. Note here that said roll is made, in fact, of materials of lower density compared to that of steel.

EFFECT: lower costs of corrugating machines.

13 cl, 7 dwg