DOUBLE-BELT PRESS Russian patent published in 1997 - IPC

FIELD: plastic material working. SUBSTANCE: double-belt press for forming continuously fed web of material includes rigid frame and drums mounted for rotation in bearing units, upper and lower endless belts embracing said drums, pressure chambers closed from upwards and from downwards by pressure plates and by inner surfaces of press belts and restricted at their lateral sides by sliding sealings. Said sealings are arranged in grooves passing along edges of pressure plates with possibility of motion normal relative to inner sides of press belts and they are forced to inner sides of respective belts by pressurized liquid medium for creating forming pressure onto belts of press. Sliding sealing includes metallic body turned to pressure plate and to inner side of press belt and dry sliding layer connected with said body and sliding along inner side of press belt. Additional sealing is placed on pressure plate in parallel with said main sealing. Such design provides stability of sealing against pressure and temperature actions and also trapping and draining medium leakage. EFFECT: improved design. 6 cl, 4 dwg