CA1045433A - Wet press in a tissue paper machine - Google Patents
Wet press in a tissue paper machineInfo
- Publication number
- CA1045433A CA1045433A CA254,691A CA254691A CA1045433A CA 1045433 A CA1045433 A CA 1045433A CA 254691 A CA254691 A CA 254691A CA 1045433 A CA1045433 A CA 1045433A
- Authority
- CA
- Canada
- Prior art keywords
- roll
- nip
- wet press
- felt
- web
- 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
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/04—Arrangements thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/0281—Wet presses in combination with a dryer roll
Landscapes
- Paper (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE:
In a tissue paper machine provided with a Yankee cylinder a wet press wherein a paper web is conducted to pass.
The wet press comprises an upper suction roll, a lower recessed surface roll arranged to be urged against the suction roll for defining a first press nip therewith a second nip defined between the upper suction roll and the Yankee cylinder, and a third nip defined between the Yankee cylinder and a further recessed surface roll. Two felts sandwishes the web during its passage through the first nip.
In a tissue paper machine provided with a Yankee cylinder a wet press wherein a paper web is conducted to pass.
The wet press comprises an upper suction roll, a lower recessed surface roll arranged to be urged against the suction roll for defining a first press nip therewith a second nip defined between the upper suction roll and the Yankee cylinder, and a third nip defined between the Yankee cylinder and a further recessed surface roll. Two felts sandwishes the web during its passage through the first nip.
Description
The present invention concerns a wet press in a tissue paper machine.
As known in prior art, the press section of a tissue paper machine consists either of a conventional wet press and/or two press rolls, which are urged against a large diameter, so-called Yankee cylinder constructed for evaporation drying.
The drying section, again, consists either of said Yankee cylinder alone or of this cylinder together with the so-called after-dryer following thereafter. In both cases the drying of the web takes place by effect of evaporation when the wet web is brought into contact with the surfaces, heated by means of internal pressurized steam, of the Yankee cylinder and of the after-dryer, if any.
From the smooth surface of the Yankee cylinder the web that has become adherent thereto is detached at the end of the drying zone with the aid of a doctor blade, which produces in the web the creping obtained by the upsetting effect. The paper that has been creped in this manner is then transferred to the after-dryer and to potential marking prior to reeling. The after-dryer con-sists of a number of normal steam-heated paper machine drying cylinders. Especially in the case of the thinnest tissue paper brands the after-drying may be omitted.
In tissue paper machines of prior art the thin paper brands are usually dry-creped when the moisture content of the web is about 5 to 10%, while thicker brands from 25 g/cm base weight upwards are more commonly subjected to wet creping in which procedure the moisture content of the web is approximately 40 to 50%, whereby the above-mentioned separate after-dryer is needed to remove the residual moisture. Its absence restricts the use of the dry crepe machine to the nominal purpose only. The wet crepe machine, in contrast, may also be used to turn out dry crepe paper if the wet press, which mostly has to be used in the A
manufacturing of wet crepe, can be conveniently bypassed. The after-dryer remains unnecessary, of course.
In the tissue paper machine wet presses of prior art certain drawbacks have presented themselves, such as the fact that after the press nip the web no longer follows reliably along with the Yankee felt (the top felt), and these drawbacks have constituted part of the motivation for the present invention.
An object of the present invention is to provide in a tissue paper machine a wet press wherein the conduction of the web can be improved from what it was before, e.g. so that the web follows more positively along with the Yankee felt.
It is a further object to enhance the dewatering in the wet press and to achieve a two-sided, and as symmetrical as possiblej dewatering action.
Since in tissue paper machines a wet press is required which could be taken into operation and out of operation by simple means and preferably even while the machine is running (by-pass possibility), it is one of the objects of the present invention to arrange for the said by-pass possibility. In this connection reference is made to the same applicant's Finnish patent 51976 of May 10, 1977, the wet press of which is mainly characterized in that the lower roll of the wet press and at least one of the adjacent felt guiding rolls are mounted on a movable base, which can, when desired, by means of a suitable power means be moved away from the paper web to such a distance that the web may pass freely through between the press rolls without touching the felt lapping the lower roll.
Therefore, according to the present invention, in a tissue paper machine provided with a Yankee cylinder there is provided a wet press wherein a paper web is conducted to pass.
The wet press comprises an upper suction roll, a lower recessed surface roll, arranged to be urged against the upper suction roll for defining a first press nip therewith, a second nip defined between the upper suction roll and the Yankee cylinder, and a third nip defined between the Yankee cylinder and a further recessed surface roll. Two felts sandwishes the wet during its passage through the first nip.
In the following the invention is described in detail with reference to certain embodiment examples of the inven-tion, presented in the figures of the attached drawing, but to which the inventionisnottobe exclusively confined.
Fig. 1 shows a wet press according to the invention, in schematic elevational view.
Fig. 2 shows another wet press design according to the invention, in schematic elevational view.
As shown in Fig. 1, the web W formed on the wire 10 is transferred with the aid of a pick-up roll 12 onto the Yankee felt 13. The web W is inaicated in Fig. 1 with a dot-and~dash line, and the return roll of the forming wire 10 is indicated by the reference numeral 11~
The tissue paper machine wet press of Figure 1 comprises a lower roll 14, and an upper roll 16, which rolls are rotatably carried in a manner known in itself in prior art, in the frame 30 of the machine. The web to be treated, W, arrives, adherent to the lower face of the Yankee felt 13, to the nip N
defined by the rolls 14, 16. In the said nip Nl the web W is interposed between two felts, namely, the said Yankee or pick-up felt 13 and the lower felt 20, the guiding rolls of which are denoted with 18 and 19. After leaving the said nip Nl the web follows positively along with the Yankee felt 13, going to the roll 24, which defines the nip N2 together with the Yankee cylinder 26. In association with the Yankee cylinder 26 even another nip N3 is formed in connec~ion with the roll 25, and after the said 1~)45433 nip N3 the course of the Yankee felt ]3 and that of the web W
separate, the web W continuing its travel on the surface of the Yankee cylinder 26.
In order to obtain a symmetrical and efficient dewatering action and to make sure that the web W follows reliably along with the Yankee felt 13, the roll used as lower roll is a recessed surface roll 14, and the upper roll is a suction roll 16.
A recessed surface roll is understood to mean any such drilled or grooved roll the cavities of which serve transiently as a place of storage for the water escaping in the press nip and from which the water may be removed e.g. by means of the doctor blade 27.
It is thus understood that the lower roll 14, is e.g. a grooved roll, a blinddrilled roll, a roll coated with a plastic wire, or another equivalent recessed surface roll. As can be seen from Fig. 1, the upper roll 16 is a roll provided with a suction zone 17. The said suction zone 17 commences at the nip Nl and continues forward in the direction of travel of the web W through the angle indicated in the figure. This suction zone 17 causes the reliable transfer of the web W along with the Yankee felt 13.
Moreover, by action of the suction zone 17 water is also removed upward, whereby a two sided and substantially symmetrical dewatering action is obtained. In Fig. 1 the recessed surface of the lower roll 14 has been indicated with 15.
In the manufacturing of dry crepe with the tissue paper machine just described, the wet press may be disconnected from operation by turning the frame 22 of the lower roll 14 about its pivot 21 into its lower position. This can be accomplished e.g. with the aid of the power means 23, which have been schemati-cally showninFig. 1. As regards the conversion of the wet crepe machine just described to be appropriate for the manufacturing of dry crepe and the by-passing of the wet press, reference is made to the same applicant's earlier Finnish patent 51976 of May 10, 1977;
c~
the structurespresented therein may also be applied in connection with the wet press of Fig. 1. This is accomplished in the manner just described, in that the upper roll I6 is a fixedly installed suction roll and the lower roll 14 is a recessed surface roll that can be displaced from its position by means of a pivot 21 or equivalent.
As regards the mutual positioning of the rolls 14, 16 it is advantageous if the centre of the upper roll 16 lies slightly forward in the direction of travel of the web W from the vertical plane passing through thecentre of the lower roll 14.
The roll 14 may, if required, be fitted with compensation for its deflection, but this is by no means always necessary.
Referring to Fig. 2, wherein an advantageous embodiment of the tissue paper machine wet press according to the invention is presented. For greater ease of understanding the description, those structural components which correspond to components occurring also in Fig. 1 have been indicated with identical reference numerals. The web W formed upon the wire 10-is transferred with the aid of the pick-up roll 12 onto the Yankee felt 13. As in Fig. 1, the web has been indicated by a dot-and-dash line, and the return roll of the forming wire 10 has been denoted with 11. The reference numeral 31 indicate the guiding roll of the felt 13 and web W.
It has been understood in the embodiment of Fig. 2 to make use of the roll 24 of Fig. 1, which already exists, and which thus in the present embodiment is the equivalement of the suction roll 16 of Fig. 1. Hereby one suction roll is saved, and part of the frame structure. It is thus now understood that the wet press comprises the lower roll 14 and the upper roll 24, which rolls arerotatably carried in a manner previously known in itself. The web W to be treated arrives, adherent to the lower face of the Yankee or pick-up felt 13, to the nip Nl defined by the rolls 14, 24, where, as in the preceding embodiment, the web W is interposed between the Yankee felt 13 and the lower felt 20.
The rolls 18 and 19 serve as guiding rolls of the lower felt 20.
After leaving the said nip Nl, the web W arrives, following along with the Yankee felt 13, at the nip N2 defined by the suction roll 24 and the Yankee cylinder 26. It is thus observed that in this embodiment, differing from the preceding embodiment, the suction roll 24 has two suction zones, 17 and 17'. The web passes, after leaving the nip N2, adherent to the surface of the Yankee cylinder 26, and the Yankee felt 13 travels over the guiding rolls 32 and 33 to the roll 25, which is a blind drilled roll. The Yankee felt 13 may, of course, also be carried as-in Fig. 1 directly from the suction roll 24 to the said roll 25, but the arrangement of Fig. 2 enables the water absorbed by the felt 13 from the web W
to be removed in a manner previously known in itself (not depicted) prior to conduction of the felt 13 to the roll 25. The Yankee cylinder 26 and the said roll 25 define a nip N3, and after leaving said nip N3 the courses of the Yankee felt 13 and the web W go apart, the web W continuing its travel upon the surface of the - Yankee cylinder 26.
In this embodiment, too, a symmetrical and efficient dewatering action is obtained at the nip Nl defined by the suction roll 24 and the roll 14 with recessed surface 15, and in addition it is ensured that the web W follows reliably along with the Yankee felt 13 after the nip Nl. The angular width of the suction zone 17 of the suction roll 24 is denoted with a in Fig. 2. The suction roll has furthermore a second suction zone 17' substantially opposite to the nip N2! and its angular width is denoted with a'. Of course, water escapes in one direction only at the suction zone 17', whereas, as has been said, the dewatering is in two directions at the suction zone 17.
A
It is also possible in the embodiment of Fig, 2 to take the wet press out of operation when dry crepe is being manufactured on the tissue paper machine, and this is done by turning the frame of the lower roll 14 about its pivot into the lower position. In Fig. 2 the frame structure of the lower roll 14 has not been depicted, because it may be completely the same structure as in Fig. 1.
In the foregoing only two advantageous embodiments have been presented, and it is obvious to one skilled in the art that numerous modifications of these embodiments are possible, without digression from the protective scope of the invention.
As known in prior art, the press section of a tissue paper machine consists either of a conventional wet press and/or two press rolls, which are urged against a large diameter, so-called Yankee cylinder constructed for evaporation drying.
The drying section, again, consists either of said Yankee cylinder alone or of this cylinder together with the so-called after-dryer following thereafter. In both cases the drying of the web takes place by effect of evaporation when the wet web is brought into contact with the surfaces, heated by means of internal pressurized steam, of the Yankee cylinder and of the after-dryer, if any.
From the smooth surface of the Yankee cylinder the web that has become adherent thereto is detached at the end of the drying zone with the aid of a doctor blade, which produces in the web the creping obtained by the upsetting effect. The paper that has been creped in this manner is then transferred to the after-dryer and to potential marking prior to reeling. The after-dryer con-sists of a number of normal steam-heated paper machine drying cylinders. Especially in the case of the thinnest tissue paper brands the after-drying may be omitted.
In tissue paper machines of prior art the thin paper brands are usually dry-creped when the moisture content of the web is about 5 to 10%, while thicker brands from 25 g/cm base weight upwards are more commonly subjected to wet creping in which procedure the moisture content of the web is approximately 40 to 50%, whereby the above-mentioned separate after-dryer is needed to remove the residual moisture. Its absence restricts the use of the dry crepe machine to the nominal purpose only. The wet crepe machine, in contrast, may also be used to turn out dry crepe paper if the wet press, which mostly has to be used in the A
manufacturing of wet crepe, can be conveniently bypassed. The after-dryer remains unnecessary, of course.
In the tissue paper machine wet presses of prior art certain drawbacks have presented themselves, such as the fact that after the press nip the web no longer follows reliably along with the Yankee felt (the top felt), and these drawbacks have constituted part of the motivation for the present invention.
An object of the present invention is to provide in a tissue paper machine a wet press wherein the conduction of the web can be improved from what it was before, e.g. so that the web follows more positively along with the Yankee felt.
It is a further object to enhance the dewatering in the wet press and to achieve a two-sided, and as symmetrical as possiblej dewatering action.
Since in tissue paper machines a wet press is required which could be taken into operation and out of operation by simple means and preferably even while the machine is running (by-pass possibility), it is one of the objects of the present invention to arrange for the said by-pass possibility. In this connection reference is made to the same applicant's Finnish patent 51976 of May 10, 1977, the wet press of which is mainly characterized in that the lower roll of the wet press and at least one of the adjacent felt guiding rolls are mounted on a movable base, which can, when desired, by means of a suitable power means be moved away from the paper web to such a distance that the web may pass freely through between the press rolls without touching the felt lapping the lower roll.
Therefore, according to the present invention, in a tissue paper machine provided with a Yankee cylinder there is provided a wet press wherein a paper web is conducted to pass.
The wet press comprises an upper suction roll, a lower recessed surface roll, arranged to be urged against the upper suction roll for defining a first press nip therewith, a second nip defined between the upper suction roll and the Yankee cylinder, and a third nip defined between the Yankee cylinder and a further recessed surface roll. Two felts sandwishes the wet during its passage through the first nip.
In the following the invention is described in detail with reference to certain embodiment examples of the inven-tion, presented in the figures of the attached drawing, but to which the inventionisnottobe exclusively confined.
Fig. 1 shows a wet press according to the invention, in schematic elevational view.
Fig. 2 shows another wet press design according to the invention, in schematic elevational view.
As shown in Fig. 1, the web W formed on the wire 10 is transferred with the aid of a pick-up roll 12 onto the Yankee felt 13. The web W is inaicated in Fig. 1 with a dot-and~dash line, and the return roll of the forming wire 10 is indicated by the reference numeral 11~
The tissue paper machine wet press of Figure 1 comprises a lower roll 14, and an upper roll 16, which rolls are rotatably carried in a manner known in itself in prior art, in the frame 30 of the machine. The web to be treated, W, arrives, adherent to the lower face of the Yankee felt 13, to the nip N
defined by the rolls 14, 16. In the said nip Nl the web W is interposed between two felts, namely, the said Yankee or pick-up felt 13 and the lower felt 20, the guiding rolls of which are denoted with 18 and 19. After leaving the said nip Nl the web follows positively along with the Yankee felt 13, going to the roll 24, which defines the nip N2 together with the Yankee cylinder 26. In association with the Yankee cylinder 26 even another nip N3 is formed in connec~ion with the roll 25, and after the said 1~)45433 nip N3 the course of the Yankee felt ]3 and that of the web W
separate, the web W continuing its travel on the surface of the Yankee cylinder 26.
In order to obtain a symmetrical and efficient dewatering action and to make sure that the web W follows reliably along with the Yankee felt 13, the roll used as lower roll is a recessed surface roll 14, and the upper roll is a suction roll 16.
A recessed surface roll is understood to mean any such drilled or grooved roll the cavities of which serve transiently as a place of storage for the water escaping in the press nip and from which the water may be removed e.g. by means of the doctor blade 27.
It is thus understood that the lower roll 14, is e.g. a grooved roll, a blinddrilled roll, a roll coated with a plastic wire, or another equivalent recessed surface roll. As can be seen from Fig. 1, the upper roll 16 is a roll provided with a suction zone 17. The said suction zone 17 commences at the nip Nl and continues forward in the direction of travel of the web W through the angle indicated in the figure. This suction zone 17 causes the reliable transfer of the web W along with the Yankee felt 13.
Moreover, by action of the suction zone 17 water is also removed upward, whereby a two sided and substantially symmetrical dewatering action is obtained. In Fig. 1 the recessed surface of the lower roll 14 has been indicated with 15.
In the manufacturing of dry crepe with the tissue paper machine just described, the wet press may be disconnected from operation by turning the frame 22 of the lower roll 14 about its pivot 21 into its lower position. This can be accomplished e.g. with the aid of the power means 23, which have been schemati-cally showninFig. 1. As regards the conversion of the wet crepe machine just described to be appropriate for the manufacturing of dry crepe and the by-passing of the wet press, reference is made to the same applicant's earlier Finnish patent 51976 of May 10, 1977;
c~
the structurespresented therein may also be applied in connection with the wet press of Fig. 1. This is accomplished in the manner just described, in that the upper roll I6 is a fixedly installed suction roll and the lower roll 14 is a recessed surface roll that can be displaced from its position by means of a pivot 21 or equivalent.
As regards the mutual positioning of the rolls 14, 16 it is advantageous if the centre of the upper roll 16 lies slightly forward in the direction of travel of the web W from the vertical plane passing through thecentre of the lower roll 14.
The roll 14 may, if required, be fitted with compensation for its deflection, but this is by no means always necessary.
Referring to Fig. 2, wherein an advantageous embodiment of the tissue paper machine wet press according to the invention is presented. For greater ease of understanding the description, those structural components which correspond to components occurring also in Fig. 1 have been indicated with identical reference numerals. The web W formed upon the wire 10-is transferred with the aid of the pick-up roll 12 onto the Yankee felt 13. As in Fig. 1, the web has been indicated by a dot-and-dash line, and the return roll of the forming wire 10 has been denoted with 11. The reference numeral 31 indicate the guiding roll of the felt 13 and web W.
It has been understood in the embodiment of Fig. 2 to make use of the roll 24 of Fig. 1, which already exists, and which thus in the present embodiment is the equivalement of the suction roll 16 of Fig. 1. Hereby one suction roll is saved, and part of the frame structure. It is thus now understood that the wet press comprises the lower roll 14 and the upper roll 24, which rolls arerotatably carried in a manner previously known in itself. The web W to be treated arrives, adherent to the lower face of the Yankee or pick-up felt 13, to the nip Nl defined by the rolls 14, 24, where, as in the preceding embodiment, the web W is interposed between the Yankee felt 13 and the lower felt 20.
The rolls 18 and 19 serve as guiding rolls of the lower felt 20.
After leaving the said nip Nl, the web W arrives, following along with the Yankee felt 13, at the nip N2 defined by the suction roll 24 and the Yankee cylinder 26. It is thus observed that in this embodiment, differing from the preceding embodiment, the suction roll 24 has two suction zones, 17 and 17'. The web passes, after leaving the nip N2, adherent to the surface of the Yankee cylinder 26, and the Yankee felt 13 travels over the guiding rolls 32 and 33 to the roll 25, which is a blind drilled roll. The Yankee felt 13 may, of course, also be carried as-in Fig. 1 directly from the suction roll 24 to the said roll 25, but the arrangement of Fig. 2 enables the water absorbed by the felt 13 from the web W
to be removed in a manner previously known in itself (not depicted) prior to conduction of the felt 13 to the roll 25. The Yankee cylinder 26 and the said roll 25 define a nip N3, and after leaving said nip N3 the courses of the Yankee felt 13 and the web W go apart, the web W continuing its travel upon the surface of the - Yankee cylinder 26.
In this embodiment, too, a symmetrical and efficient dewatering action is obtained at the nip Nl defined by the suction roll 24 and the roll 14 with recessed surface 15, and in addition it is ensured that the web W follows reliably along with the Yankee felt 13 after the nip Nl. The angular width of the suction zone 17 of the suction roll 24 is denoted with a in Fig. 2. The suction roll has furthermore a second suction zone 17' substantially opposite to the nip N2! and its angular width is denoted with a'. Of course, water escapes in one direction only at the suction zone 17', whereas, as has been said, the dewatering is in two directions at the suction zone 17.
A
It is also possible in the embodiment of Fig, 2 to take the wet press out of operation when dry crepe is being manufactured on the tissue paper machine, and this is done by turning the frame of the lower roll 14 about its pivot into the lower position. In Fig. 2 the frame structure of the lower roll 14 has not been depicted, because it may be completely the same structure as in Fig. 1.
In the foregoing only two advantageous embodiments have been presented, and it is obvious to one skilled in the art that numerous modifications of these embodiments are possible, without digression from the protective scope of the invention.
Claims (11)
1. In a tissue paper machine provided with a Yankee cylinder a wet press wherein a paper web is conducted to pass, comprising:
- an upper suction roll, - a lower recessed surface roll, arranged to be urged against said upper suction roll for defining a first press nip therewith, - a second nip defined between said upper suction roll and said Yankee cylinder, - a third nip defined between said Yankee cylinder and a further recessed surface roll, and - two felts sandwishing said web during its passage through said first nip.
- an upper suction roll, - a lower recessed surface roll, arranged to be urged against said upper suction roll for defining a first press nip therewith, - a second nip defined between said upper suction roll and said Yankee cylinder, - a third nip defined between said Yankee cylinder and a further recessed surface roll, and - two felts sandwishing said web during its passage through said first nip.
2. A wet press according to claim 1, wherein one of said felts is a pick-up felt, said web passing through said first, second and third nips accompanied by said pick-up felt.
3. A wet press according to claim 2, further comprising means for separting said pick-up felt from the web after said second nip.
4. A wet press according to claim 3, wherein said means for separating said pick-up felt from the web after said second nip comprises also felt reconditionning means.
5. A wet press according to claim 4, wherein said pick-up felt separating and reconditionning means comprises two guiding rolls.
6. A wet press according to claim 1, wherein said upper roll is a suction roll, having a first suction zone opposite said first nip, and a second suction zone opposite said second nip.
7. A wet press according to claim 1, wherein said lower recessed surface roll is a grooved roll.
8. A wet press according to claim 1, wherein said lower recessed surface roll is a blind drilled roll.
9. A wet press according to claim 1, wherein said lower recessed surface roll is a roll coated with a plasticwire.
10. A wet press according to claim 1, further comprising means for displacing away said lower recessed surface roll from its operating position.
11. A wet press according to claim 2 wherein said pick-up felt is carried directly from said upper suction roll to said further recessed surface roll.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI751754A FI751754A (en) | 1975-06-12 | 1975-06-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1045433A true CA1045433A (en) | 1979-01-02 |
Family
ID=8509269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA254,691A Expired CA1045433A (en) | 1975-06-12 | 1976-06-11 | Wet press in a tissue paper machine |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS51149907A (en) |
| BR (1) | BR7603726A (en) |
| CA (1) | CA1045433A (en) |
| DE (1) | DE2626298A1 (en) |
| FI (1) | FI751754A (en) |
| FR (1) | FR2314294A1 (en) |
| GB (1) | GB1507578A (en) |
| NO (1) | NO145106C (en) |
| SE (1) | SE426251B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI752585A (en) * | 1975-09-16 | 1977-03-17 | Valmet Oy | |
| FI74060C (en) * | 1975-09-17 | 1987-12-10 | Valmet Oy | tissue Paper Machine |
| FI74314C (en) * | 1977-02-18 | 1988-01-11 | Valkama P J | Pressure for removing water from fiber web |
| US4302282A (en) * | 1980-01-29 | 1981-11-24 | The Procter & Gamble Company | Method of and apparatus for making imprinted paper |
| FI71370C (en) * | 1983-05-06 | 1986-12-19 | Valmet Oy | SLUTET PRESSPARTI I PAPPERSMASKIN |
| DE10247538A1 (en) * | 2002-10-11 | 2004-05-06 | Voith Paper Patent Gmbh | Press arrangement |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE244817C (en) * | ||||
| GB602237A (en) * | 1944-03-13 | 1948-05-24 | Beloit Iron Works | Improvements in or relating to paper making machines, and suction transfer roll assemblies suitable for use in the improved paper making machines |
| US2672078A (en) * | 1950-04-05 | 1954-03-16 | Beloit Iron Works | Suction press assembly |
| US2888074A (en) * | 1954-10-11 | 1959-05-26 | Beloit Iron Works | Suction press assembly utilizing a press roll having a wire mesh periphery |
| FR1280824A (en) * | 1960-12-13 | 1962-01-08 | Beloit Iron Works | Presser assembly for continuous paper machine |
| FR1406336A (en) * | 1964-09-02 | 1965-07-16 | Millspaugh Ltd | Press section for papermaking machines |
| FR2211023A5 (en) * | 1972-12-18 | 1974-07-12 | Valmet Oy | Press for removing fluid from paper - includes a series of roller nips through which paper web passes |
| FI284474A (en) * | 1974-09-27 | 1976-03-28 | Valmet Oy |
-
1975
- 1975-06-12 FI FI751754A patent/FI751754A/fi not_active Application Discontinuation
-
1976
- 1976-06-07 GB GB23407/76A patent/GB1507578A/en not_active Expired
- 1976-06-08 JP JP51066155A patent/JPS51149907A/en active Pending
- 1976-06-10 NO NO762012A patent/NO145106C/en unknown
- 1976-06-10 BR BR7603726A patent/BR7603726A/en unknown
- 1976-06-10 SE SE7606565A patent/SE426251B/en unknown
- 1976-06-11 DE DE19762626298 patent/DE2626298A1/en not_active Ceased
- 1976-06-11 FR FR7617783A patent/FR2314294A1/en active Granted
- 1976-06-11 CA CA254,691A patent/CA1045433A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| SE7606565L (en) | 1976-12-13 |
| DE2626298B2 (en) | 1980-05-14 |
| FI751754A (en) | 1976-12-13 |
| FR2314294A1 (en) | 1977-01-07 |
| NO145106B (en) | 1981-10-05 |
| NO762012L (en) | 1976-12-14 |
| FR2314294B1 (en) | 1982-08-20 |
| JPS51149907A (en) | 1976-12-23 |
| SE426251B (en) | 1982-12-20 |
| GB1507578A (en) | 1978-04-19 |
| NO145106C (en) | 1982-01-13 |
| BR7603726A (en) | 1977-02-08 |
| DE2626298A1 (en) | 1976-12-23 |
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