CA1070535A - Deflection-compensated, preferably soft-surface roll for use in a calender - Google Patents
Deflection-compensated, preferably soft-surface roll for use in a calenderInfo
- Publication number
- CA1070535A CA1070535A CA285,081A CA285081A CA1070535A CA 1070535 A CA1070535 A CA 1070535A CA 285081 A CA285081 A CA 285081A CA 1070535 A CA1070535 A CA 1070535A
- Authority
- CA
- Canada
- Prior art keywords
- roll
- deflection
- compensation means
- shell
- calender
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000011068 loading method Methods 0.000 claims abstract description 6
- 238000003490 calendering Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C13/00—Rolls, drums, discs, or the like; Bearings or mountings therefor
- F16C13/02—Bearings
- F16C13/022—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle
- F16C13/024—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle
- F16C13/026—Bearings supporting a hollow roll mantle rotating with respect to a yoke or axle adjustable for positioning, e.g. radial movable bearings for controlling the deflection along the length of the roll mantle by fluid pressure
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/002—Opening or closing mechanisms; Regulating the pressure
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/02—Rolls; Their bearings
- D21G1/0206—Controlled deflection rolls
- D21G1/0213—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member
- D21G1/022—Controlled deflection rolls with deflection compensation means acting between the roller shell and its supporting member the means using fluid pressure
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
A deflection-compensated roll for use in a calender, comprising a stationary axle upon which is rotatably mounted a shell, characterized in that: The roll comprises at least two mutually independently controllable compensation means, one of the compensation means consisting of a piston provided with a slide shoe which abuts on the inner surface of the shell, the piston being a continuous stip-like piston extending over the entire length of the deflection-compensated roll, the one compensation means substantially compensating for the deflection due to the proper weight of the roll, and the other of said compensation means consisting of a pressurizable ring sector shaped gap between the shell and the axle, the other compensation means substantially compensating for the deflec-tion caused by the line pressure loading of the calender nip.
A deflection-compensated roll for use in a calender, comprising a stationary axle upon which is rotatably mounted a shell, characterized in that: The roll comprises at least two mutually independently controllable compensation means, one of the compensation means consisting of a piston provided with a slide shoe which abuts on the inner surface of the shell, the piston being a continuous stip-like piston extending over the entire length of the deflection-compensated roll, the one compensation means substantially compensating for the deflection due to the proper weight of the roll, and the other of said compensation means consisting of a pressurizable ring sector shaped gap between the shell and the axle, the other compensation means substantially compensating for the deflec-tion caused by the line pressure loading of the calender nip.
Description
1~70535 The present invention relates to a deflection-compensated roll for use in a calender, in particular in a calender such as has been specified in Canadian patent applica-tion No. 280,333, having as inventor Matti Kankaanpaa.
In the application 280,333 a so-called supercalender belonging to a paper machine and intended for the burnishing of the paper web has been disclosed, comprising a number of hard rolls and a substantially equal number of soft rolls, such as paper-coated rolls, cooperating with the hard rolls. It is a substantially characteristic feature of the main invention that the hard rolls have been disposed upon each other toconstitutea stack wherein there are formed hard nips, and that in connec-tion with the topmost and/or lowermost intermediate roll in the stack constituted by hard rolls there have been formed, in ad-dition to a hard nip between two hard rolls, at least two soft nips wherein one of the tworollsis a soft roll, most appropri-ately a paper-coated roll.
The object of the present invention is to accomplish improvements in the rolls employed in the above-defined calender and in other equivalent calenders, particularly in soft rolls which define soft nips together with hard rolls be-longing to the calender. In a calender according to applica-tion No. 280,333, the soft rolls will be so located that their axis and the nip defined by them are not in a vertical plane.
Furthermore, the loadin~ of the soft rol~s has been arranged to be adjustable. Owing to these circumstances the direction of the resultant from the proper weight of the rolls and the line pressure load is subject to change as the nip loadings are changed. Thereby the control of the calender rolls' deflection and hereby that of the distribution of line pressure in the nips defined by the soft roll~ becomes very difficult and very com-plicated. The object of the invention is in fact, to provide a ~070535 new calender roll by the aid of which the disadvanteges mentioned may be avoided.
Therefore, according to the present invention, there is provided a deflection-compensated roll for use in a calender, comprising a stationary axle upon which is rotatably mounted a shell characterized in that the roll comprises at least two mutually independently controllable compensation means, one of the compensation means consisting of a piston provided with a slide sho~ which abuts on the inner surface of the shell, the lo piston being a continuous strip-like piston extending over the entire length of the deflection compensated roll, the one com-pensation means substantially compensating for the deflection due to the proper weight of the roll, and the other of the com-pensation means consisting of a pressurizable ring sector shap-ed gap between the shell and the axle, the other compensation means substantially compensating for the deflection caused by the line pressure loading of the calender nip.
In the following, the invention shall be described in detail with reference to an embodiment example of the invention presented in the figures of the attached drawing, but to which the invention is not confined in any way.
FIGURE 1 presents, in schematic elevational view, a calender wherein a deflection-compensated roll according to the invention is used.
FIGURE 2 shows the cross-section of the deflection-compensated roll of the invention.
FIGURE 3 shows a central axial section of the deflec-tion-compensated roll of the invention.
In Figure 1 an embodiment of the calender is depicted wherein a deflection-compensated roll according to the inven-tion is applied. The calender rolls 1, 2, 5 and 6 E~
'1070535 are hard rolls, for instance die-cast rolls. Rolls 1 and 2 are large-diameter rolls (radius Rl). The roll 2 has been provided with a drive means 40, which has been symbolically depicted. It should be observed in this connection that the large diameter 2Rl of the rolls 1 and 2 makes their deflection rather small however, even if they should be asymmetrically loaded.
The rolls 10 are so-called paper rolls, which are commonly employed in supercalenders, and they have been provided with deflection compensation in a manner which will be apparent later on. The deflection-compensated soft rolls 10 are also provided with force means 28, 29 and lever arms 30-33 visible in Figure 1, the latter being pivoted by axles 35 and 36 to the calender frame and allowing the rolls 10 to be distanced as is found suitable from the surface of the roll 1, or 2, as the case may be. The rolls 10 may be urged against the hard rolls 1 and 2 by means of the force means 28, 29 in order to obtain the desired line pressure of the calender nips N.
It is possible, by varying the placement of the soft rolls 10 and the force directed thereupon by means of the arms 30-33, to influence not only the nip pressures of the soft nips N, but also within rather wide and variable limits the nip pressures of the hard nips N. It follows that by varying the difference and mutual proportion of the working pressures Pl and P2 of the force means 28, 29 the calendering event may be influenced within very wide limits.
The means controlling the forces Pl and P2 have been schematically indicated by the block 50 in Figure 2. The path of the web through the calender of ~igure 1 is illus-trated by arrows Win - WOUt.
3 _ ~070535 The deflection-compensated roll 10 of the invention comprises a soft paper covering 11, under this a metallic shell 12. The paper covering 11 has been affixed upon the shell 12 by means of the tightening nut 16. The roll of the invention comprises, furthermore, a stationary, solid axle 14, upon which the roll shell 11, 12 has been arranged with the aid of the bearing 15 to be rotatable.
As shown in Figures 2 and 3, in view of compensating for the deflection caused by the proper weight of the roll there is in connection with the axle 14, a lathe-like piston 13, to which a slide shoe 22 has been attached, this latter abutting on the inner surface of the roll shell 12. Behind the lathe-like piston 13 there is a pressure chamber, into which liquid may be conducted under desired pressure through the bore 17. The slide shoe 22 and piston 13 constitute the compensation zone a, with the aid of which the deflection arising from the proper weight of the roll is compensated in the direction B. According to the invention, in connection with the roll there has also been provided at least one further compensation zone ~, consisting of a pressure chamber 20, confined by sealing strips 21.
Into the chamber confined by the outer surface of ~, the above-mentioned stationary axle 14 and the rotating roll shell 12, and by the seals 21, a pressurized fluid of desired pressure is conducted through the bores 19. The leakage . oil draining passage has been indicated by the reference numeral 18. By means of the compensation zone ~ constituted by thc pressure chamber 20, the deflections of the roll 10 caused by the line pressure loading of the calender nip N
can be compensated in the direction C.
_ 4 l07as3s By using at least two compensating zones ~ and ~
arranged as taught by the present invention, one is enabled by controlling the action pressure of these zones independent of.each other, to compensate for the deflections of the calender roll in all and any different loading situations, and to arrange the line pressure in the calender nip in question to have such distribution as is desired.
The invention is in no way confined to the details described in the foregoing by way of example only, and which may vary within th~ inventive idea defined by the claims following below.
.. . ..
In the application 280,333 a so-called supercalender belonging to a paper machine and intended for the burnishing of the paper web has been disclosed, comprising a number of hard rolls and a substantially equal number of soft rolls, such as paper-coated rolls, cooperating with the hard rolls. It is a substantially characteristic feature of the main invention that the hard rolls have been disposed upon each other toconstitutea stack wherein there are formed hard nips, and that in connec-tion with the topmost and/or lowermost intermediate roll in the stack constituted by hard rolls there have been formed, in ad-dition to a hard nip between two hard rolls, at least two soft nips wherein one of the tworollsis a soft roll, most appropri-ately a paper-coated roll.
The object of the present invention is to accomplish improvements in the rolls employed in the above-defined calender and in other equivalent calenders, particularly in soft rolls which define soft nips together with hard rolls be-longing to the calender. In a calender according to applica-tion No. 280,333, the soft rolls will be so located that their axis and the nip defined by them are not in a vertical plane.
Furthermore, the loadin~ of the soft rol~s has been arranged to be adjustable. Owing to these circumstances the direction of the resultant from the proper weight of the rolls and the line pressure load is subject to change as the nip loadings are changed. Thereby the control of the calender rolls' deflection and hereby that of the distribution of line pressure in the nips defined by the soft roll~ becomes very difficult and very com-plicated. The object of the invention is in fact, to provide a ~070535 new calender roll by the aid of which the disadvanteges mentioned may be avoided.
Therefore, according to the present invention, there is provided a deflection-compensated roll for use in a calender, comprising a stationary axle upon which is rotatably mounted a shell characterized in that the roll comprises at least two mutually independently controllable compensation means, one of the compensation means consisting of a piston provided with a slide sho~ which abuts on the inner surface of the shell, the lo piston being a continuous strip-like piston extending over the entire length of the deflection compensated roll, the one com-pensation means substantially compensating for the deflection due to the proper weight of the roll, and the other of the com-pensation means consisting of a pressurizable ring sector shap-ed gap between the shell and the axle, the other compensation means substantially compensating for the deflection caused by the line pressure loading of the calender nip.
In the following, the invention shall be described in detail with reference to an embodiment example of the invention presented in the figures of the attached drawing, but to which the invention is not confined in any way.
FIGURE 1 presents, in schematic elevational view, a calender wherein a deflection-compensated roll according to the invention is used.
FIGURE 2 shows the cross-section of the deflection-compensated roll of the invention.
FIGURE 3 shows a central axial section of the deflec-tion-compensated roll of the invention.
In Figure 1 an embodiment of the calender is depicted wherein a deflection-compensated roll according to the inven-tion is applied. The calender rolls 1, 2, 5 and 6 E~
'1070535 are hard rolls, for instance die-cast rolls. Rolls 1 and 2 are large-diameter rolls (radius Rl). The roll 2 has been provided with a drive means 40, which has been symbolically depicted. It should be observed in this connection that the large diameter 2Rl of the rolls 1 and 2 makes their deflection rather small however, even if they should be asymmetrically loaded.
The rolls 10 are so-called paper rolls, which are commonly employed in supercalenders, and they have been provided with deflection compensation in a manner which will be apparent later on. The deflection-compensated soft rolls 10 are also provided with force means 28, 29 and lever arms 30-33 visible in Figure 1, the latter being pivoted by axles 35 and 36 to the calender frame and allowing the rolls 10 to be distanced as is found suitable from the surface of the roll 1, or 2, as the case may be. The rolls 10 may be urged against the hard rolls 1 and 2 by means of the force means 28, 29 in order to obtain the desired line pressure of the calender nips N.
It is possible, by varying the placement of the soft rolls 10 and the force directed thereupon by means of the arms 30-33, to influence not only the nip pressures of the soft nips N, but also within rather wide and variable limits the nip pressures of the hard nips N. It follows that by varying the difference and mutual proportion of the working pressures Pl and P2 of the force means 28, 29 the calendering event may be influenced within very wide limits.
The means controlling the forces Pl and P2 have been schematically indicated by the block 50 in Figure 2. The path of the web through the calender of ~igure 1 is illus-trated by arrows Win - WOUt.
3 _ ~070535 The deflection-compensated roll 10 of the invention comprises a soft paper covering 11, under this a metallic shell 12. The paper covering 11 has been affixed upon the shell 12 by means of the tightening nut 16. The roll of the invention comprises, furthermore, a stationary, solid axle 14, upon which the roll shell 11, 12 has been arranged with the aid of the bearing 15 to be rotatable.
As shown in Figures 2 and 3, in view of compensating for the deflection caused by the proper weight of the roll there is in connection with the axle 14, a lathe-like piston 13, to which a slide shoe 22 has been attached, this latter abutting on the inner surface of the roll shell 12. Behind the lathe-like piston 13 there is a pressure chamber, into which liquid may be conducted under desired pressure through the bore 17. The slide shoe 22 and piston 13 constitute the compensation zone a, with the aid of which the deflection arising from the proper weight of the roll is compensated in the direction B. According to the invention, in connection with the roll there has also been provided at least one further compensation zone ~, consisting of a pressure chamber 20, confined by sealing strips 21.
Into the chamber confined by the outer surface of ~, the above-mentioned stationary axle 14 and the rotating roll shell 12, and by the seals 21, a pressurized fluid of desired pressure is conducted through the bores 19. The leakage . oil draining passage has been indicated by the reference numeral 18. By means of the compensation zone ~ constituted by thc pressure chamber 20, the deflections of the roll 10 caused by the line pressure loading of the calender nip N
can be compensated in the direction C.
_ 4 l07as3s By using at least two compensating zones ~ and ~
arranged as taught by the present invention, one is enabled by controlling the action pressure of these zones independent of.each other, to compensate for the deflections of the calender roll in all and any different loading situations, and to arrange the line pressure in the calender nip in question to have such distribution as is desired.
The invention is in no way confined to the details described in the foregoing by way of example only, and which may vary within th~ inventive idea defined by the claims following below.
.. . ..
Claims (2)
1. A deflection-compensated roll for use in a calender, comprising a stationary axle upon which is rotatably mounted a shell characterized in that:
- the roll comprises at least two mutually indepen-dently controllable compensation means, - one of said compensation means consisting of a piston provided with a slide shoe which abuts on the inner surface of said shell, said piston being a continuous strip-like piston extending over the entire length of the deflection-compensated roll, said one compensation means substantially compensating for the deflection due to the proper weight of the roll, and - the other of said compensation means consisting of a pressurizable ring sector shaped gap between said shell and said axle, said other compensation means substantially compen-sating for the deflection caused by the line pressure loading of the calender nip.
- the roll comprises at least two mutually indepen-dently controllable compensation means, - one of said compensation means consisting of a piston provided with a slide shoe which abuts on the inner surface of said shell, said piston being a continuous strip-like piston extending over the entire length of the deflection-compensated roll, said one compensation means substantially compensating for the deflection due to the proper weight of the roll, and - the other of said compensation means consisting of a pressurizable ring sector shaped gap between said shell and said axle, said other compensation means substantially compen-sating for the deflection caused by the line pressure loading of the calender nip.
2. A deflection-compensated roll according to claim 1, wherein said roll has a soft covering mounted on said shell.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI762392A FI60264C (en) | 1976-08-20 | 1976-08-20 | BOXING COMPONENTS WHICH MAKE A DIFFERENTITY OF THE CALENDAR |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1070535A true CA1070535A (en) | 1980-01-29 |
Family
ID=8510195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA285,081A Expired CA1070535A (en) | 1976-08-20 | 1977-08-19 | Deflection-compensated, preferably soft-surface roll for use in a calender |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5331809A (en) |
| AT (1) | AT367475B (en) |
| BR (1) | BR7705462A (en) |
| CA (1) | CA1070535A (en) |
| DE (1) | DE2737346C2 (en) |
| FI (1) | FI60264C (en) |
| FR (1) | FR2362238A2 (en) |
| SE (1) | SE7709210L (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI58801C (en) * | 1976-06-17 | 1981-04-10 | Valmet Oy | TILL EN PAPPERSMASKIN HOERANDE SK SUPERKALANDER |
| DE3007452C2 (en) * | 1980-02-28 | 1984-09-20 | Kleinewefers Gmbh, 4150 Krefeld | Process for regulating the pressure exerted in a calender and calender for carrying out this process |
| JPS57115676A (en) * | 1981-01-09 | 1982-07-19 | Azuma Steel | Internal pressure controller |
| DE3119387C2 (en) * | 1981-05-06 | 1985-03-21 | Sulzer-Escher Wyss AG, Zürich | Roll for a rolling device |
| DE3138365A1 (en) * | 1981-09-21 | 1983-04-14 | Escher Wyss AG, Zürich | DEFLECTION ADJUSTING ROLLER |
| JPS62164818A (en) * | 1986-01-13 | 1987-07-21 | Honda Motor Co Ltd | Annealing method and direct-fired combustion furnace for annealing |
| CH671732A5 (en) * | 1986-11-07 | 1989-09-29 | Escher Wyss Ag | |
| FI104206B (en) * | 1998-06-15 | 1999-11-30 | Valmet Corp | Rapid movement arrangement of a hydrostatic bearing roller |
| DE102010029492A1 (en) * | 2010-05-31 | 2011-12-01 | Voith Patent Gmbh | Roller and method for avoiding their vibrations |
| DE202016106944U1 (en) * | 2016-02-08 | 2017-01-02 | Voith Patent Gmbh | Device for treating a fibrous web |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1026609B (en) * | 1956-02-01 | 1958-03-20 | Kuesters Eduard | Roller for the pressure treatment of goods, e.g. Paper webs |
| DE1240804B (en) * | 1962-01-03 | 1967-05-24 | Ramisch & Co Dr | Calender roll |
| US3276102A (en) * | 1964-01-24 | 1966-10-04 | Beloit Corp | Adjustable crown roll |
| DE1277793B (en) * | 1964-08-14 | 1968-09-19 | Kleinewefers Soehne J | Roll for calenders, squeezing mills, rolling mills or the like. |
| US3430319A (en) * | 1966-08-15 | 1969-03-04 | Beloit Corp | Nondeflection support for web carrying roll |
| DE2230139B2 (en) * | 1971-06-28 | 1980-01-31 | Escher Wyss Ag, Zuerich (Schweiz) | Roller with deflection compensation for the pressure treatment of web-shaped materials |
| CH565600A5 (en) * | 1973-06-15 | 1975-08-29 | Escher Wyss Ag |
-
1976
- 1976-08-20 FI FI762392A patent/FI60264C/en not_active IP Right Cessation
-
1977
- 1977-08-10 AT AT0583677A patent/AT367475B/en not_active IP Right Cessation
- 1977-08-12 JP JP9618677A patent/JPS5331809A/en active Pending
- 1977-08-16 SE SE7709210A patent/SE7709210L/en not_active Application Discontinuation
- 1977-08-17 BR BR7705462A patent/BR7705462A/en unknown
- 1977-08-18 DE DE2737346A patent/DE2737346C2/en not_active Expired
- 1977-08-19 CA CA285,081A patent/CA1070535A/en not_active Expired
- 1977-08-19 FR FR7725423A patent/FR2362238A2/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FI762392A7 (en) | 1978-02-21 |
| DE2737346C2 (en) | 1983-11-17 |
| AT367475B (en) | 1982-07-12 |
| JPS5331809A (en) | 1978-03-25 |
| FI60264B (en) | 1981-08-31 |
| SE7709210L (en) | 1978-02-21 |
| FI60264C (en) | 1981-12-10 |
| DE2737346A1 (en) | 1978-02-23 |
| FR2362238B2 (en) | 1983-03-18 |
| FR2362238A2 (en) | 1978-03-17 |
| BR7705462A (en) | 1978-05-02 |
| ATA583677A (en) | 1981-11-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5438920A (en) | Method for calendering a paper or an equivalent web material and a calender that makes use of the method | |
| CA1263551A (en) | Pressure roll for use in calenders or the like | |
| CA1070535A (en) | Deflection-compensated, preferably soft-surface roll for use in a calender | |
| EP0332594B1 (en) | Variable-crown roll | |
| US4793250A (en) | Method and apparatus for controlling deflection of an adjustable crown roll | |
| CA1305621C (en) | Variable-crown roll | |
| US5590593A (en) | Mounting arrangement for calendar rolls in a calender | |
| US6129453A (en) | Hydrostatic glide bearing for a roll or equivalent | |
| US4194446A (en) | Rolls, such as filled calender rolls, having deflection compensation | |
| US4936207A (en) | System of rolls in a supercalender | |
| US5018258A (en) | Support system for a variable-crown roll | |
| US4131063A (en) | Calender | |
| CA1274109A (en) | Press roll in particular for the treatment of paper web or equivalent | |
| GB2145194A (en) | Improvements in or relating to a roll for a foil-drawing calendar | |
| US4435971A (en) | Controlled deflection roll with control arrangement | |
| EP1212484B1 (en) | Calender with two intermediate shoe rolls | |
| CA2183482C (en) | Method for regulating loading of an adjustable-crown roll and an adjustable-crown roll | |
| EP0886696A1 (en) | A tubular roll provided with hydraulically loaded glide bearings | |
| WO2003104553A1 (en) | Arrangement for closing roll nips | |
| WO2001021889A1 (en) | Method and arrangement for control of rolls in a calender | |
| FI98319C (en) | A bend adjustable roll and method of controlling the load of a bend adjustable roll | |
| FI58661C (en) | VALS FOER EN PAPPERSMASKIN | |
| FI81184C (en) | BOEJNINGSKOMPENSERAD VALS. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |