Suction roll for a paper making machine and a method for produci

Details Suction roll for a paper making machine and a method for produci Suction roll for a paper making machine and a method for produci

1990-12-05

1992-08-04

Hastings, Karen M.

Paper making and fiber liberation

Processes and products

Running or indefinite length work forming and/or treating...

34117, 34120, 162368, 162370, 162372, D21F 310, D21F 502

Patent

active

051356147

ABSTRACT:
The invention concerns a suction roll (10) for a paper making machine, on which the paper web is pressed towards the outer face of the roll mantle. The suction roll (10) is divided, in the axial direction of the roll, into at least three vacuum spaced (A.sub.1, A.sub.2, A.sub.3). In the interior of the suction roll (10), there are at least two partition walls (17a, 17b), by means of which the suction space (13) is divided into separate zones of negative pressure. The lateral vacuum spaces (A.sub.1, A.sub.3) in the suction space can be subjected to a higher negative pressure than the vacuum space (a.sub.2) in the middle area of the roll, whereby the profile of negative pressure is formed such that the negative pressure increases across the width of the roll towards the lateral areas. The invention also concerns a method for producing a desired pressure profile for a suction roll.

REFERENCES:
patent: 573752 (1896-12-01), Allen
patent: 4876803 (1989-10-01), Wedel
patent: 4882854 (1989-11-01), Wedel et al.
patent: 4905379 (1990-03-01), Wedel
patent: 4974340 (1990-12-01), Wedel et al.
patent: 4980979 (1991-01-01), Wedel
patent: 5015336 (1991-05-01), Roerig et al.
patent: 5024729 (1991-06-01), Kuhasalo et al.

Affiliated with

Also associated with

Rating

Suction roll for a paper making machine and a method for produci does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Suction roll for a paper making machine and a method for produci, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Suction roll for a paper making machine and a method for produci will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-776076