Method and apparatus for the manufacture of dimensionally stable, liquid-impermeable, flexible press bands, particularly for wet presses of paper making machines

Abstract From the Canadian patent

The invention relates to a method of and an apparatus for the manufacture of dimensionally stable liquid-, impermeable, flexible press bands particularly for, wet presses of paper making machines. With known manufacturing methods for such press bands the, provision of a structured surface for liquid discharge on the outer surface of the press band which, faces the fibrous web or the felts is achieved either, by reversing the press band after removal from the casting mould so that the structured surface becomes the outer surface of the band while the smooth surface forms the inside thereof, or by grinding drainage ducts. into the outer surface of the press band. But especially in the case of …