Patent ID: 6197156
Filing Date: 2001-03-06
Classification: D21F

Abstract:
A press section of a paper machine including a plurality of press rolls and a pick-up roll provided with a suction zone on which a paper web is detached from a forming wire and transferred to a pick-up felt, comprisinga hollow-faced press roll situated against said suction zone of said pick-up roll to form a first press nip after the web is transferred to said pick-up felt, said first press nip being structured and arranged to provide a low load, said pick-up felt carrying the web into and through said first press nip and acting as a press fabric in said first press nip,a press felt arranged around said hollow-faced press roll such that said press felt and said pick-up felt run through said first press nip, andextended nip means for forming an extended nip after said first press nip in the running direction of the web, said extended nip means comprising a smooth-faced press roll, the web being passed on said pick-up felt from said first press nip into said extended nip,said extended nip constituting the only press nip formed against said smooth-face center roll,said pick-up felt constituting the only water-receiving press fabric in said extended nip, the web being separated from said pick-up felt in the vicinity of said extended nip.