A SHOE FOR A PAPER MACHINE PRESS, BELT ROLL COMPRISING THE SHOE, AND PAPER MAKING MACHINE COMPRISING THE BELT ROLL

Patentradars sammanfattning

This invention relates to a press shoe for paper machine extended nip presses, particularly for tissue paper production, comprising a polymer working surface with specified surface roughness (Ra < 6 μm, preferably < 1 μm) and Shore hardness (50-65 Shore A equivalent). The low surface roughness combined with controlled hardness retains lubricating oil film between the shoe and rotating belt, reducing friction, wear, and power consumption even during partial lubrication loss. The shoe cooperates with a counter roll to form a nip press that dewaters fibrous webs during paper manufacturing.

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