Calender for treating both sides of a paper web

Details Calender for treating both sides of a paper web Calender for treating both sides of a paper web

D - Textiles, Paper

21

G

D21G 1/02 (2006.01) D21G 1/00 (2006.01)

Patent

CA 2169979

A calender for the two-sided treatment of a paper web has two similar stacks each of which has at least two soft rollers and two hard rollers. Working nips are formed between each hard and soft roller. The calender has at least one working nip wherein the dwell time (t) is at least 0.1 ms, the surface temperature (T) is at least 100°C, and the load (P) on the stack creates an average compressive stress in the working nip of more than 42 N/mm2. This provides a calender that is smaller and less expensive to manufacture and operate than super-calenders of the prior art but that also affords excellent finishing results.

Cette invention concerne une calandre pour le traitement sur deux faces d'une bande de papier. Elle se compose de deux groupes semblables de rouleaux composés chacun d'au moins deux rouleaux à revêtement souple et deux rouleaux durs. Le traitement se fait à la ligne de rencontre entre chaque paire de rouleaux dur et à revêtement souple. La calandre comporte au moins une pince de traitement à temps de tenue (t) d'au moins 0,1 ms et à température de surface d'au moins 100 degrés Celsius, la charge (P) exercée sur les groupes de rouleaux donnant une force de compression moyenne, au droit de la pince de traitement, de plus de 42 N/mm2. Cette disposition constructive donne une calandre plus ramassée et moyen chère à fabriquer et à exploiter que les supercalandres des antériorités, tout en offrant une finition excellente.

Affiliated with

Also associated with

Rating

Calender for treating both sides of a paper web does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Calender for treating both sides of a paper web, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Calender for treating both sides of a paper web will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1432565