Method for calendering paper and paper manufactured by the metho

Details Method for calendering paper and paper manufactured by the metho Method for calendering paper and paper manufactured by the metho

1989-06-16

1991-01-22

Simmons, David A.

Paper making and fiber liberation

Processes and products

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

162206, 100 93RP, 100163A, D21G 100

Patent

active

049868837

ABSTRACT:
A method for calendering paper, especially with glassine calendering in a calender which comprises press rolls arranged successively in the paper-advancing direction where, at least between some of the rolls, press nips are formed for passing paper therethrough. Each press nip is preferably formed by a pair of rolls, one of which is hard and the other elastic. Paper is advanced into the calender at an initial moisture X within the range of 12% .ltoreq..times..ltoreq.25%, at least one of the press nips having a calculable line pressure higher than 250 kN/m. In operating conditions, the ratio X/LP between paper moisture X and calculable line pressure LP is maintained in the press nips within predetermined limits in such a manner that the maximum value of ratio X/LP divided by the minimum value of ratio X/LP is .ltoreq.2.15, whereby X refers to the moisture percentage of paper and LP is the line pressure at a particular press nip expressed as a quantity kN/m (kilonewton/meter).

REFERENCES:
patent: 3268354 (1966-08-01), Hain
patent: 4012543 (1977-03-01), Ranger et al.
patent: 4257843 (1981-03-01), Watanabe et al.

Affiliated with

Also associated with

Rating

Method for calendering paper and paper manufactured by the metho does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for calendering paper and paper manufactured by the metho, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for calendering paper and paper manufactured by the metho will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1553694