US3874997A - Multiple cylinder drier in a paper machine - Google Patents
Multiple cylinder drier in a paper machine Download PDFInfo
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- US3874997A US3874997A US343469A US34346973A US3874997A US 3874997 A US3874997 A US 3874997A US 343469 A US343469 A US 343469A US 34346973 A US34346973 A US 34346973A US 3874997 A US3874997 A US 3874997A
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- drying
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- paper web
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
Definitions
- ABSTRACT An improvement in the multiple cylinder drier unit of a paper making machine, each drying group of which consists of a number of driers disposed in two rows, one above the other, and lapped by the paper web running through the group in zigzag fashion, supported by a drying wire.
- the suggested improvement is particularly characterized in that the driers in one row of the drying group are permeable to air and that the multiple cylinder drier also comprises additional driers for creating differential pressures on both sides of the paper web, whereby passage of air through the web is achieved, with the web pressed into contact with the drying wire.
- the drying means permeable to air are cylindrically shaped drying cylinders, or they consist of a suction chamber substantially confined by the drying wire moving on a support of guiding rolls.
- hot air blowing hoods may be arranged around the drying means permeable to air and, within them, suction chambers.
- the paper web arriving from the press section of the paper machine may be arranged to be attached to the drying wire by the aid of suction means exerting suction through this wire.
- the present invention concerns, in a paper making machine, a multiple cylinder drier having one or several drying groups or drying sections composed of drying means disposed in two rows, one above the other, over which the paper web travels along a zigzag path from one row to the other, through the group and is supported by a drying wire permeable to air.
- all drying means have previously been so constructed that the drying has taken place according to the contact drying method. As a result, the efficiency of the drier has not been as high as it could be.
- the multiple cylinder drier Since paper machines are nowadays run at high speed and the speed is increased all the time, the multiple cylinder drier is required to be more efficient in order that a desired degree of drying of the paper web might be achieved. Consequently, the multiple cylinder drier has to be very large indeed, which has its own drawbacks.
- the object of the present invention is to provide a more efficient multiple cylinder drier, in order that the above-mentioned drawback could be eliminated.
- the invention is characterized in that in a multiple cylinder drier of the kind described the drying means of one row are permeable to air and that the multiple cylinder drier also comprises means for creating differential pressures on both sides of the paper web, whereby the drying air can be made to pass through the paper web, while this paper web is urged into contact with the drying wire. Since the multiple cylinder drier according to the invention has alternating contact drying means and perfusion drying means, the advantages of the contact drying method and of the perfusion drying method can be combined. It follows that the drying efficiency of a multiple cylinder drier according to the invention is considerably superior to that of multiple cylinder driers of prior art.
- the drying means permeable to air may be cylinders permeable to air such as those provided with a cylinder mantle.
- the drying means permeable to air may also consist of suction chambers substantially confined by the drying wire, moving on the support of guiding rolls.
- a hot air blowing hood may be arranged, and inside it a suction chamber.
- FIG. 1 shows schematically a multiple cylinder drier according to an embodiment example of the invention, in elevational view.
- FIG. 2 shows a multiple cylinder drier according to another embodiment example of the invention, similarly in schematical presentation and in elevational view.
- each drying means in the upper row comprises suction rolls 4 and guiding rolls 6 disposed between these, and which constitute a curved path, along which the drying wire permeable to air travels.
- the drying wire consists most appropriately of a plastic wire or equivalent, which does not take up water.
- a heavy-duty hot air drying hood 7 Over the curved path a heavy-duty hot air drying hood 7 has been fitted, and under it, within the curved part, a suction chamber 8.
- the paper web 9 arriving from the press section of the paper machine is drawn against the drying wire 5 by the use of the suction roll 1, and its attachment to this wire is aided by the suction box 2. Subsequently, the paper web 9 travels, impacted between the drying cylinder 30 and the drying wire 5, up to the press nip 3a/4 defined by the drying cylinder 3a and the suction roll 4. Since the roll 4 is a suction roll, the paper web 9 follows along with the drying wire 5 in the passage of this wire along the curved path defined by the guiding rolls 6.
- the paper web 9 is urged against the drying wire by differential pressure created by the hot air drying hood 7 above the curved path and the suction chamber 8 within the curved path, and the drying air flows'through the paper web 9 and drying wire 5. Since another suction roll 4 has been placed at the end of the curved path, the paper web 9 is transferred to the second drying cylinder 3b. From this drying cylinder 3b the paper web 9 continues to another curved drying means of the kind described (not shown in its entirety).
- the drawing also shows blowing devices 11a and 11b used to blow hot air into the hoods 7 to produce pressure which is higher than atmospheric pressure.
- Suction means 12a and 12b are used to produce a vacuum in the suction chambers 8, while suction means 126 produce vacuum in the suction box 2.
- the walls of the hoods 7, suction chambers 8 and suction box 2 are indicated by the numeral 14 in the drawing, while sealing strips associated with these walls are indicated by the numeral 13.
- the drying means are likewise arranged in two rows, one above the other, interspaced with each other.
- the drying wire 5 runs along a zigzag path over the,said drying means, from one row to the other.
- the drying means in the lower row are conventional heatable drying cylinders 3a, 3b, 3c, etc.
- the drying means in the upper row are drying cylinders 10a, 10b, etc. permeable to air.
- the drying wire 5 travels together with the paper web along a zigzag path from one row to the other.
- heavy-duty hot air blowing hoods 7 and suction chambers 8 have been provided.
- FIG. 2 shows a blowing device applied to the third hood 7.
- the paper web is alternatingly subjected to contact drying and to perfusion drying. This results in a faster drying of the paper web than in prior art.
- a dryer assembly for the drying of a paper web, comprising a row of drying cylinders rotatable about their horizontal axes; perfusion drying means disposed at a vertical distance from the row of drying cylinders and located between said drying cylinders in their interstices; a drying wire permeable to air, the paper web traveling in contact with and supported by said wire from the beginning to the end of the dryer assembly all the way zigzagging from the preceding drying cylinder to the next perfusion drying means, the paper web being disposed on that side of the drying wire where, when running upon a drying cylinder, the paper web is interposed between the drying wire and the mantle surface of the drying cylinder so that hereby, the drying of the paper web by contact drying takes place; said perfusion drying means further comprising, on the side facing the drying wire and adjacent to it, a hot air blowing hood, and on the other side of the drying wire and paper web opposite thereto, a suction chamber extending and limited to the entire joint run of web and wire from
- the perfusion drying means comprise a plurality of guiding rolls, the axes of which lie on a curved surface between mutually adjacent drying cylinders, and whereby, under guidance of said guiding rolls, the drying wire travels from one row of drying cylinders to the next row, the perfusion drying means further comprising, adjacent to the outermost guiding rolls, a wall which, together with the drying wire guided by the guiding rolls, confines and encloses said suction chamber.
- Dryer assembly according to claim 2 wherein the outermost guiding rolls are suction rolls and are so placed to define a press nip together with the drying cylinders adjacent to them.
- the perfusion drying means comprises a row of cylinders permeable to air and rotatable about their horizontal axes, said row being disposed at a vertical distance from the row of drying cylinders and said hot air blowing hood covering said permeable-to-air cylinders on a sector of substantially and a confining wall located adjacent to the plane defined by the row of drying cylinders and which, together with the runs of the drying wire between the drying cylinders and the cylinder permeable to air, confine and enclose said suction chamber.
Abstract
An improvement in the multiple cylinder drier unit of a paper making machine, each drying group of which consists of a number of driers disposed in two rows, one above the other, and lapped by the paper web running through the group in zigzag fashion, supported by a drying wire. The suggested improvement is particularly characterized in that the driers in one row of the drying group are permeable to air and that the multiple cylinder drier also comprises additional driers for creating differential pressures on both sides of the paper web, whereby passage of air through the web is achieved, with the web pressed into contact with the drying wire. According to further, optional features of the invention, the drying means permeable to air are cylindrically shaped drying cylinders, or they consist of a suction chamber substantially confined by the drying wire moving on a support of guiding rolls. In addition, hot air blowing hoods may be arranged around the drying means permeable to air and, within them, suction chambers. The paper web arriving from the press section of the paper machine may be arranged to be attached to the drying wire by the aid of suction means exerting suction through this wire.
Description
Kankaanpaa 1 Apr. 1,1975
[ MULTIPLE CYLINDER DRIER IN A PAPER [56] References Cited UNITED STATES PATENTS 1,615,210 1/1927 Astcn 34/116X 1,767,889 6/1930 .lurgensen 162/290 X 1,844,658 2/1932 Holcomb 34/159 2,091,805 8/1937 Chuse 162/290 X 3,318,017 5/1967 Smith, Jr 34/116 3,320,675 5/1967 Chaikin et al. 34/115 X 3,576,078 4/1971 Holt 34/159 X 3,671,389 6/1972 Wahlstrom et al, 162/306 3,685,167 8/1972 Loveday et a1. 34/155 X 3,733,711 5/1973 Haythornethwaite 34/155 X 3,816,941 6/1974 Hulik et a1, 162/207 X Primary E.\'uminerRobert L. Lindsay, Jr. Assistant Examiner-Richard V. Fisher Attorney, Agent, or FirmRichards & Geier [57] ABSTRACT An improvement in the multiple cylinder drier unit of a paper making machine, each drying group of which consists of a number of driers disposed in two rows, one above the other, and lapped by the paper web running through the group in zigzag fashion, supported by a drying wire. The suggested improvement is particularly characterized in that the driers in one row of the drying group are permeable to air and that the multiple cylinder drier also comprises additional driers for creating differential pressures on both sides of the paper web, whereby passage of air through the web is achieved, with the web pressed into contact with the drying wire.
According to further, optional features of the invention, the drying means permeable to air are cylindrically shaped drying cylinders, or they consist of a suction chamber substantially confined by the drying wire moving on a support of guiding rolls. in addition, hot air blowing hoods may be arranged around the drying means permeable to air and, within them, suction chambers. The paper web arriving from the press section of the paper machine may be arranged to be attached to the drying wire by the aid of suction means exerting suction through this wire.
MULTIPLE CYLINDER DRIER IN A PAPER MACHINE The present invention concerns, in a paper making machine, a multiple cylinder drier having one or several drying groups or drying sections composed of drying means disposed in two rows, one above the other, over which the paper web travels along a zigzag path from one row to the other, through the group and is supported by a drying wire permeable to air. In multiple cylinder driers of this kind, all drying means have previously been so constructed that the drying has taken place according to the contact drying method. As a result, the efficiency of the drier has not been as high as it could be. Since paper machines are nowadays run at high speed and the speed is increased all the time, the multiple cylinder drier is required to be more efficient in order that a desired degree of drying of the paper web might be achieved. Consequently, the multiple cylinder drier has to be very large indeed, which has its own drawbacks.
The object of the present invention is to provide a more efficient multiple cylinder drier, in order that the above-mentioned drawback could be eliminated. The invention is characterized in that in a multiple cylinder drier of the kind described the drying means of one row are permeable to air and that the multiple cylinder drier also comprises means for creating differential pressures on both sides of the paper web, whereby the drying air can be made to pass through the paper web, while this paper web is urged into contact with the drying wire. Since the multiple cylinder drier according to the invention has alternating contact drying means and perfusion drying means, the advantages of the contact drying method and of the perfusion drying method can be combined. It follows that the drying efficiency of a multiple cylinder drier according to the invention is considerably superior to that of multiple cylinder driers of prior art.
The drying means permeable to air may be cylinders permeable to air such as those provided with a cylinder mantle. The drying means permeable to air may also consist of suction chambers substantially confined by the drying wire, moving on the support of guiding rolls. In order to create differential pressures, around the drying means permeable to air a hot air blowing hood may be arranged, and inside it a suction chamber.
The invention is more thoroughly described with reference to the embodiment examples presented in the attached drawings.
In the drawing,
FIG. 1 shows schematically a multiple cylinder drier according to an embodiment example of the invention, in elevational view.
FIG. 2 shows a multiple cylinder drier according to another embodiment example of the invention, similarly in schematical presentation and in elevational view.
In the multiple cylinder drier of FIG. 1 the drying means have been disposed, interspaced, in two rows one above the other. The drying means in the lower row are conventional heatable drying cylinders 30, 3b. Each drying means in the upper row comprises suction rolls 4 and guiding rolls 6 disposed between these, and which constitute a curved path, along which the drying wire permeable to air travels. The drying wire consists most appropriately of a plastic wire or equivalent, which does not take up water. Over the curved path a heavy-duty hot air drying hood 7 has been fitted, and under it, within the curved part, a suction chamber 8. In addition, there are means for conducting the paper web to the multiple cylinder drier. These means consist of a suction roll 1, followed by a suction box 2.
The paper web 9 arriving from the press section of the paper machine is drawn against the drying wire 5 by the use of the suction roll 1, and its attachment to this wire is aided by the suction box 2. Subsequently, the paper web 9 travels, impacted between the drying cylinder 30 and the drying wire 5, up to the press nip 3a/4 defined by the drying cylinder 3a and the suction roll 4. Since the roll 4 is a suction roll, the paper web 9 follows along with the drying wire 5 in the passage of this wire along the curved path defined by the guiding rolls 6. Here, the paper web 9 is urged against the drying wire by differential pressure created by the hot air drying hood 7 above the curved path and the suction chamber 8 within the curved path, and the drying air flows'through the paper web 9 and drying wire 5. Since another suction roll 4 has been placed at the end of the curved path, the paper web 9 is transferred to the second drying cylinder 3b. From this drying cylinder 3b the paper web 9 continues to another curved drying means of the kind described (not shown in its entirety). The drawing also shows blowing devices 11a and 11b used to blow hot air into the hoods 7 to produce pressure which is higher than atmospheric pressure. Suction means 12a and 12b are used to produce a vacuum in the suction chambers 8, while suction means 126 produce vacuum in the suction box 2. The walls of the hoods 7, suction chambers 8 and suction box 2 are indicated by the numeral 14 in the drawing, while sealing strips associated with these walls are indicated by the numeral 13.
In the embodiment example of FIG. 2 the drying means are likewise arranged in two rows, one above the other, interspaced with each other. The drying wire 5 runs along a zigzag path over the,said drying means, from one row to the other. The drying means in the lower row are conventional heatable drying cylinders 3a, 3b, 3c, etc. The drying means in the upper row are drying cylinders 10a, 10b, etc. permeable to air. As has been said above, the drying wire 5 travels together with the paper web along a zigzag path from one row to the other. Similarly as in the preceding embodiment, in this design, too, and for the same reasons, heavy-duty hot air blowing hoods 7 and suction chambers 8 have been provided. From the drawing it is understood that impingement drying is effected in the region of the blowing hoods 7. For conduction of the paper web 9 from the press section to the drying cylinder 3a, a suction roll 1 and suction box 2 have been provided as in the preceding embodiment example. The paper web travels over the drying cylinders 3a, 3b and 3c in the lower row, pressed against them by the drying wire 5. In its travel over the drying cylinders 10a and 10b, permeable to air, in the upper row, the paper web 9 is urged against the drying wire 5 by effect of the hot air drying hood 7 and the suction chamber 8. In addition to blowing devices 11a and 11b, FIG. 2 also shows a blowing device applied to the third hood 7.
In both embodiment examples presented in the foregoing, the paper web is alternatingly subjected to contact drying and to perfusion drying. This results in a faster drying of the paper web than in prior art.
The invention is by no means confined merely to the embodiment examples presented here; these may rather be modified in many ways within the scope of the invention.
I claim:
1. In a paper machine, a dryer assembly for the drying of a paper web, comprising a row of drying cylinders rotatable about their horizontal axes; perfusion drying means disposed at a vertical distance from the row of drying cylinders and located between said drying cylinders in their interstices; a drying wire permeable to air, the paper web traveling in contact with and supported by said wire from the beginning to the end of the dryer assembly all the way zigzagging from the preceding drying cylinder to the next perfusion drying means, the paper web being disposed on that side of the drying wire where, when running upon a drying cylinder, the paper web is interposed between the drying wire and the mantle surface of the drying cylinder so that hereby, the drying of the paper web by contact drying takes place; said perfusion drying means further comprising, on the side facing the drying wire and adjacent to it, a hot air blowing hood, and on the other side of the drying wire and paper web opposite thereto, a suction chamber extending and limited to the entire joint run of web and wire from one drying cylinder to the next, so that perfusion drying of the paper web takes place substantially on the whole distance of travel ofthe paper web from the preceding to the next drying cylinder, and so that drying furthermore takes place by impingement drying in the region of the blowing hood; a suction roll at the beginning of the dryer assembly and at a vertical distance from the first drying cylinder so that, by means of said suction roll, the paper web is transferred to be supported by the drying wire; a joint run of the paper web and drying wire between said suction roll and first drying cylinder; a suction box on said joint run on the side facing the drying wire, the effect of the vacuum in this suction box being used to make the paper web adhere to the drying wire.
2. Dryer assembly according to claim 1, wherein the perfusion drying means comprise a plurality of guiding rolls, the axes of which lie on a curved surface between mutually adjacent drying cylinders, and whereby, under guidance of said guiding rolls, the drying wire travels from one row of drying cylinders to the next row, the perfusion drying means further comprising, adjacent to the outermost guiding rolls, a wall which, together with the drying wire guided by the guiding rolls, confines and encloses said suction chamber.
3. Dryer assembly according to claim 2, wherein the outermost guiding rolls are suction rolls and are so placed to define a press nip together with the drying cylinders adjacent to them.
4. Dryer assembly according to claim 1, wherein the perfusion drying means comprises a row of cylinders permeable to air and rotatable about their horizontal axes, said row being disposed at a vertical distance from the row of drying cylinders and said hot air blowing hood covering said permeable-to-air cylinders on a sector of substantially and a confining wall located adjacent to the plane defined by the row of drying cylinders and which, together with the runs of the drying wire between the drying cylinders and the cylinder permeable to air, confine and enclose said suction chamber.
Claims (4)
1. In a paper machine, a dryer assembly for the drying of a paper web, comprising a row of drying cylinders rotatable about their horizontal axes; perfusion drying means disposed at a vertical distance from the row of drying cylinders and located between said drying cylinders in their interstices; a drying wire permeable to air, the paper web traveling in contact with and supported by said wire from the beginning to the end of the dryer assembly all the way zigzagging from the preceding drying cylinder to the next perfusion drying means, the paper web being disposed on that side of the drying wire where, when running upon a drying cylinder, the paper web is interposed between the drying wire and the mantle surface of the drying cylinder so that hereby, the drying of the paper web by contact drying takes place; said perfusion drying means further comprising, on the side facing the drying wire and adjacent to it, a hot air blowing hood, and on the other side of the drying wire and paper web opposite thereto, a suction chamber extending and limited to the entire joint run of web and wire from one drying cylinder to the next, so that perfusion drying of the paper web takes place substantially on the whole distance of travel of the paper web from the preceding to the next drying cylinder, and so that drying furthermore takes place by impingement drying in the region of the blowing hood; a suction roll at the beginning of the dryer assembly and at a vertical distance from the first drying cylinder so that, by means of said suction roll, the paper web is transferred to be supported by the drying wire; a joint run of the paper web and drying wire between said suction roll and first drying cylinder; a suction box on said joint run on the side facing the drying wire, the effect of the vacuum in this suction box being used to make the paper web adhere to the drying wire.
2. Dryer assembly according to claim 1, wherein the perfusion drying means comprise a plurality of guiding rolls, the axes of which lie on a curved surface between mutually adjacent drying cylinders, and whereby, under guidance of said guiding rolls, the drying wire travels from one row of drying cylinders to the next row, the perfusion drying means further comprising, adjacent to the outermost guiding rolls, a wall which, together with the drying wire guided by the guiding rolls, confines and encloses said suction chamber.
3. Dryer assembly according to claim 2, wherein the outermost guiding rolls are suction rolls and are so placed to define a press nip together with the drying cylinders adjacent to them.
4. Dryer assembly according to claim 1, wherein the perfusion drying means comprises a row of cylinders permeable to air and rotatable about their horizontal axes, said Row being disposed at a vertical distance from the row of drying cylinders and said hot air blowing hood covering said permeable-to-air cylinders on a sector of substantially 180*, and a confining wall located adjacent to the plane defined by the row of drying cylinders and which, together with the runs of the drying wire between the drying cylinders and the cylinder permeable to air, confine and enclose said suction chamber.
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US343469A US3874997A (en) | 1973-03-21 | 1973-03-21 | Multiple cylinder drier in a paper machine |
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US343469A US3874997A (en) | 1973-03-21 | 1973-03-21 | Multiple cylinder drier in a paper machine |
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Cited By (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4000035A (en) * | 1973-05-10 | 1976-12-28 | J. M. Voith Gmbh | Machine for drying webs, including suction and heat-contact cylinders |
US4033049A (en) * | 1973-12-22 | 1977-07-05 | J. M. Voith Gmbh | Apparatus for changing the moisture content of paper webs or the like |
US4036684A (en) * | 1975-08-04 | 1977-07-19 | Beloit Corporation | High bulk tissue forming and drying apparatus |
US4064637A (en) * | 1975-03-19 | 1977-12-27 | Ab Svenska Flaktfabriken | Cylinder dryer for paper machines |
FR2357685A1 (en) * | 1976-07-05 | 1978-02-03 | Valmet Oy | METHOD FOR ENSURING TIGHT GUIDANCE OF THE STRIP OF PAPER IN THE INITIAL PART OF THE DRYING SECTION OF A PAPER MACHINE |
DE2813933A1 (en) * | 1977-04-04 | 1978-10-12 | Valmet Oy | METHOD OF GUIDING A WEB IN THE DRY SECTION OF A PAPER MACHINE AND DRYING CYLINDER GROUP FOR PERFORMING THE METHOD |
WO1982002938A1 (en) * | 1981-02-17 | 1982-09-02 | Co Weyerhaeuser | A vacuum box for use in high speed papermaking |
WO1982002937A1 (en) * | 1981-02-17 | 1982-09-02 | Co Weyerhaeuser | High speed paper drying |
US4361466A (en) * | 1977-10-27 | 1982-11-30 | Beloit Corporation | Air impingement web drying method and apparatus |
US4441263A (en) * | 1979-11-20 | 1984-04-10 | Valmet Oy | Device in the drying section of a paper machine |
JPS59150195A (en) * | 1983-02-07 | 1984-08-28 | バルメット・オイ | Method and constitution for guiding paper web to drying partfrom press zone of papermaking machine |
DE3344217A1 (en) * | 1983-12-07 | 1985-06-20 | J.M. Voith Gmbh, 7920 Heidenheim | DEVICE FOR TRANSFERRING A PAPER RAIL FROM THE PRESS TO THE DRYING SECTION OF A PAPER MACHINE |
US4551203A (en) * | 1984-04-02 | 1985-11-05 | Valmet Oy | Method and arrangement for guiding a paper web from the press section to the drying section |
US4716660A (en) * | 1986-04-03 | 1988-01-05 | Hercules Incorporated | Unifelt air suction system |
US4768294A (en) * | 1985-12-17 | 1988-09-06 | J. M. Voith, Gmbh | Device for transferring a paper or board web from the press section to the dryer section of a paper machine |
EP0321986A2 (en) * | 1987-12-23 | 1989-06-28 | Oy Tampella Ab | Drying section in a paper making machine |
US4875976A (en) * | 1988-09-27 | 1989-10-24 | Beloit Corporation | Transfer apparatus from press section to drying section |
WO1990001085A1 (en) * | 1988-07-22 | 1990-02-08 | Beloit Corporation | A dryer apparatus for drying a web |
US4967489A (en) * | 1988-12-14 | 1990-11-06 | Valmet Paper Machinery Inc. | Multi-cylinder dryer with twin-wire draw and web transfer between the cylinder groups |
DE4012421A1 (en) * | 1990-04-19 | 1991-10-24 | Voith Gmbh J M | Paper-making drying section in paper making machine - has compressed air directed at free side of the web in a free path to reduce shrinkage unevenness |
US5101577A (en) * | 1987-02-13 | 1992-04-07 | Beloit Corporation | Web transfer apparatus |
US5241760A (en) * | 1987-02-13 | 1993-09-07 | Beloit Technologies, Inc. | Dryer apparatus |
US5336373A (en) * | 1992-12-29 | 1994-08-09 | Scott Paper Company | Method for making a strong, bulky, absorbent paper sheet using restrained can drying |
EP0620313A2 (en) † | 1993-03-22 | 1994-10-19 | Valmet Paper Machinery Inc. | Drying method and drying module, as well as dryer sections that make use of same, in particular for a high-speed paper machine |
US5426535A (en) * | 1993-07-29 | 1995-06-20 | Eastman Kodak Company | Apparatus for removing air from between a master magnetic medium and a slave magnetic medium preceding anhysteretic transfer of signals from master to slave |
US5507104A (en) * | 1987-02-13 | 1996-04-16 | Beloit Technologies, Inc. | Web drying apparatus |
US5522151A (en) * | 1995-01-27 | 1996-06-04 | Beloit Technologies, Inc. | Single tier dryer section with dual reversing rolls |
WO1996023102A1 (en) * | 1995-01-27 | 1996-08-01 | Beloit Technologies, Inc. | Papermaking dryer with multi-roll vacuum chamber |
US5542193A (en) * | 1992-04-24 | 1996-08-06 | Beloit Technologies, Inc. | Dryer group for curl control |
US5600898A (en) * | 1995-09-12 | 1997-02-11 | Beloit Technologies, Inc. | Curl control by dryer aircaps in top felted dryer section |
US5637195A (en) * | 1995-03-23 | 1997-06-10 | Westvaco Corporation | Method to reduce off-taste and/or odor from hygienic paper packages |
DE19651191A1 (en) * | 1996-12-10 | 1998-06-18 | Voith Sulzer Papiermasch Gmbh | Papermaking machine drying section |
US5792318A (en) * | 1996-11-18 | 1998-08-11 | Mancini; Ralph | Method to stabilize sheet between press section and dryer section of a paper-making machine |
US5832625A (en) * | 1987-02-13 | 1998-11-10 | Beloit Technologies, Inc. | Apparatus for drying a web |
US5865955A (en) * | 1995-04-10 | 1999-02-02 | Valmet Corporation | Method and device for enhancing the run of a paper web in a paper machine |
US5884415A (en) * | 1992-04-24 | 1999-03-23 | Beloit Technologies, Inc. | Paper making machine providing curl control |
US6004430A (en) * | 1995-10-04 | 1999-12-21 | Ilvespaa; Heikki | Method and device for enhancing the run of a paper web in a paper machine |
US6049999A (en) * | 1987-02-13 | 2000-04-18 | Beloit Technologies, Inc. | Machine and process for the restrained drying of a paper web |
US6154981A (en) * | 1998-04-30 | 2000-12-05 | Valmet Corporation | Method and apparatus for improving the drying capacity of a hood covering a yankee cylinder |
US6260287B1 (en) * | 1997-08-08 | 2001-07-17 | Peter Walker | Wet web stability method and apparatus |
US6442865B1 (en) | 1999-07-27 | 2002-09-03 | Voith Sulzer Papiertechnik Patent Gmbh | Drying section |
US20070245589A1 (en) * | 2006-04-19 | 2007-10-25 | Metso Paper, Inc. | Runnability of Web in a Material Web Machine |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1615210A (en) * | 1925-01-30 | 1927-01-25 | Eduard V Asten | Process and device for drying paper and the like fibrous webs |
US1767889A (en) * | 1927-11-16 | 1930-06-24 | Harvey H Jurgensen | Paper-making machine |
US1844658A (en) * | 1928-06-29 | 1932-02-09 | Fiberfraks Inc | Drier for paper-making machines |
US2091805A (en) * | 1934-10-06 | 1937-08-31 | Harry A Chuse | Paper making method and machine |
US3318017A (en) * | 1967-05-09 | Heat treating method and apparatus | ||
US3320675A (en) * | 1963-04-05 | 1967-05-23 | Chaikin Malcolm | Continuous method for the treatment of compressed fibrous material with gaseous substances |
US3576078A (en) * | 1970-02-02 | 1971-04-27 | Cons Paper Inc | Paper drying process and apparatus |
US3671389A (en) * | 1970-01-22 | 1972-06-20 | Johnson & Co Inc A | Apparatus for transferring a web from the forming section to the press section in a papermaking machine |
US3685167A (en) * | 1969-07-29 | 1972-08-22 | Greenbank Eng Co Ltd | Machines for drying sheets of paper or like material |
US3733711A (en) * | 1971-09-07 | 1973-05-22 | Scapa Dryers Ltd | Apparatus for and method of treating a web |
US3816941A (en) * | 1972-03-14 | 1974-06-18 | Wyss E Gmbm | Drier section |
-
1973
- 1973-03-21 US US343469A patent/US3874997A/en not_active Expired - Lifetime
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3318017A (en) * | 1967-05-09 | Heat treating method and apparatus | ||
US1615210A (en) * | 1925-01-30 | 1927-01-25 | Eduard V Asten | Process and device for drying paper and the like fibrous webs |
US1767889A (en) * | 1927-11-16 | 1930-06-24 | Harvey H Jurgensen | Paper-making machine |
US1844658A (en) * | 1928-06-29 | 1932-02-09 | Fiberfraks Inc | Drier for paper-making machines |
US2091805A (en) * | 1934-10-06 | 1937-08-31 | Harry A Chuse | Paper making method and machine |
US3320675A (en) * | 1963-04-05 | 1967-05-23 | Chaikin Malcolm | Continuous method for the treatment of compressed fibrous material with gaseous substances |
US3685167A (en) * | 1969-07-29 | 1972-08-22 | Greenbank Eng Co Ltd | Machines for drying sheets of paper or like material |
US3671389A (en) * | 1970-01-22 | 1972-06-20 | Johnson & Co Inc A | Apparatus for transferring a web from the forming section to the press section in a papermaking machine |
US3576078A (en) * | 1970-02-02 | 1971-04-27 | Cons Paper Inc | Paper drying process and apparatus |
US3733711A (en) * | 1971-09-07 | 1973-05-22 | Scapa Dryers Ltd | Apparatus for and method of treating a web |
US3816941A (en) * | 1972-03-14 | 1974-06-18 | Wyss E Gmbm | Drier section |
Cited By (56)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4000035A (en) * | 1973-05-10 | 1976-12-28 | J. M. Voith Gmbh | Machine for drying webs, including suction and heat-contact cylinders |
US4033049A (en) * | 1973-12-22 | 1977-07-05 | J. M. Voith Gmbh | Apparatus for changing the moisture content of paper webs or the like |
US4064637A (en) * | 1975-03-19 | 1977-12-27 | Ab Svenska Flaktfabriken | Cylinder dryer for paper machines |
US4036684A (en) * | 1975-08-04 | 1977-07-19 | Beloit Corporation | High bulk tissue forming and drying apparatus |
FR2357685A1 (en) * | 1976-07-05 | 1978-02-03 | Valmet Oy | METHOD FOR ENSURING TIGHT GUIDANCE OF THE STRIP OF PAPER IN THE INITIAL PART OF THE DRYING SECTION OF A PAPER MACHINE |
DE2813933A1 (en) * | 1977-04-04 | 1978-10-12 | Valmet Oy | METHOD OF GUIDING A WEB IN THE DRY SECTION OF A PAPER MACHINE AND DRYING CYLINDER GROUP FOR PERFORMING THE METHOD |
US4361466A (en) * | 1977-10-27 | 1982-11-30 | Beloit Corporation | Air impingement web drying method and apparatus |
US4359827A (en) * | 1979-11-05 | 1982-11-23 | Weyerhaeuser Company | High speed paper drying |
US4359828A (en) * | 1979-11-05 | 1982-11-23 | Weyerhaeuser Company | Vacuum box for use in high speed papermaking |
US4441263A (en) * | 1979-11-20 | 1984-04-10 | Valmet Oy | Device in the drying section of a paper machine |
WO1982002937A1 (en) * | 1981-02-17 | 1982-09-02 | Co Weyerhaeuser | High speed paper drying |
WO1982002938A1 (en) * | 1981-02-17 | 1982-09-02 | Co Weyerhaeuser | A vacuum box for use in high speed papermaking |
JPS59150195A (en) * | 1983-02-07 | 1984-08-28 | バルメット・オイ | Method and constitution for guiding paper web to drying partfrom press zone of papermaking machine |
JPH0635717B2 (en) | 1983-02-07 | 1994-05-11 | バルメット・オイ | Method and apparatus for guiding a paper web from a press section of a paper machine to a drying section |
DE3344217C2 (en) * | 1983-12-07 | 1991-01-24 | J.M. Voith Gmbh, 7920 Heidenheim, De | |
DE3344217A1 (en) * | 1983-12-07 | 1985-06-20 | J.M. Voith Gmbh, 7920 Heidenheim | DEVICE FOR TRANSFERRING A PAPER RAIL FROM THE PRESS TO THE DRYING SECTION OF A PAPER MACHINE |
US4551203A (en) * | 1984-04-02 | 1985-11-05 | Valmet Oy | Method and arrangement for guiding a paper web from the press section to the drying section |
US4768294A (en) * | 1985-12-17 | 1988-09-06 | J. M. Voith, Gmbh | Device for transferring a paper or board web from the press section to the dryer section of a paper machine |
US4716660A (en) * | 1986-04-03 | 1988-01-05 | Hercules Incorporated | Unifelt air suction system |
US5101577A (en) * | 1987-02-13 | 1992-04-07 | Beloit Corporation | Web transfer apparatus |
US5636448A (en) * | 1987-02-13 | 1997-06-10 | Beloit Technologies, Inc. | Web drying apparatus |
US5832625A (en) * | 1987-02-13 | 1998-11-10 | Beloit Technologies, Inc. | Apparatus for drying a web |
US5507104A (en) * | 1987-02-13 | 1996-04-16 | Beloit Technologies, Inc. | Web drying apparatus |
US6049999A (en) * | 1987-02-13 | 2000-04-18 | Beloit Technologies, Inc. | Machine and process for the restrained drying of a paper web |
US5241760A (en) * | 1987-02-13 | 1993-09-07 | Beloit Technologies, Inc. | Dryer apparatus |
EP0321986A3 (en) * | 1987-12-23 | 1991-04-17 | Oy Tampella Ab | Drying section in a paper making machine |
EP0321986A2 (en) * | 1987-12-23 | 1989-06-28 | Oy Tampella Ab | Drying section in a paper making machine |
WO1990001085A1 (en) * | 1988-07-22 | 1990-02-08 | Beloit Corporation | A dryer apparatus for drying a web |
US4875976A (en) * | 1988-09-27 | 1989-10-24 | Beloit Corporation | Transfer apparatus from press section to drying section |
US5046266A (en) * | 1988-12-14 | 1991-09-10 | Valmet Paper Machinery Inc. | Multi-cylinder dryer with twin-wire draw and web transfer between the cylinder groups |
US4967489A (en) * | 1988-12-14 | 1990-11-06 | Valmet Paper Machinery Inc. | Multi-cylinder dryer with twin-wire draw and web transfer between the cylinder groups |
DE4012421A1 (en) * | 1990-04-19 | 1991-10-24 | Voith Gmbh J M | Paper-making drying section in paper making machine - has compressed air directed at free side of the web in a free path to reduce shrinkage unevenness |
US5542193A (en) * | 1992-04-24 | 1996-08-06 | Beloit Technologies, Inc. | Dryer group for curl control |
US5884415A (en) * | 1992-04-24 | 1999-03-23 | Beloit Technologies, Inc. | Paper making machine providing curl control |
US5336373A (en) * | 1992-12-29 | 1994-08-09 | Scott Paper Company | Method for making a strong, bulky, absorbent paper sheet using restrained can drying |
EP0620313B2 (en) † | 1993-03-22 | 2009-11-04 | Metso Paper, Inc. | Drying method and drying module, as well as dryer sections that make use of same, in particular for a high-speed paper machine |
EP0620313A2 (en) † | 1993-03-22 | 1994-10-19 | Valmet Paper Machinery Inc. | Drying method and drying module, as well as dryer sections that make use of same, in particular for a high-speed paper machine |
US5426535A (en) * | 1993-07-29 | 1995-06-20 | Eastman Kodak Company | Apparatus for removing air from between a master magnetic medium and a slave magnetic medium preceding anhysteretic transfer of signals from master to slave |
GB2314098B (en) * | 1995-01-27 | 1998-12-23 | Beloit Technologies Inc | Papermaking dryer with multi-roll vacuum chamber |
KR100403986B1 (en) * | 1995-01-27 | 2004-03-20 | 벨로이트 테크놀로지스 인코포레이티드 | Layer drying unit having a double reversing roll |
GB2314098A (en) * | 1995-01-27 | 1997-12-17 | Beloit Technologies Inc | Papermaking dryer with multi-roll vacuum chamber |
GB2311306B (en) * | 1995-01-27 | 1998-07-15 | Beloit Technologies Inc | Dryer for papermaking |
GB2311306A (en) * | 1995-01-27 | 1997-09-24 | Beloit Technologies Inc | Single tier dryer section with dual reversing rolls |
US5522151A (en) * | 1995-01-27 | 1996-06-04 | Beloit Technologies, Inc. | Single tier dryer section with dual reversing rolls |
WO1996023103A1 (en) * | 1995-01-27 | 1996-08-01 | Beloit Technologies, Inc. | Single tier dryer section with dual reversing rolls |
WO1996023102A1 (en) * | 1995-01-27 | 1996-08-01 | Beloit Technologies, Inc. | Papermaking dryer with multi-roll vacuum chamber |
US5637195A (en) * | 1995-03-23 | 1997-06-10 | Westvaco Corporation | Method to reduce off-taste and/or odor from hygienic paper packages |
US5865955A (en) * | 1995-04-10 | 1999-02-02 | Valmet Corporation | Method and device for enhancing the run of a paper web in a paper machine |
US5600898A (en) * | 1995-09-12 | 1997-02-11 | Beloit Technologies, Inc. | Curl control by dryer aircaps in top felted dryer section |
US6004430A (en) * | 1995-10-04 | 1999-12-21 | Ilvespaa; Heikki | Method and device for enhancing the run of a paper web in a paper machine |
US5792318A (en) * | 1996-11-18 | 1998-08-11 | Mancini; Ralph | Method to stabilize sheet between press section and dryer section of a paper-making machine |
DE19651191A1 (en) * | 1996-12-10 | 1998-06-18 | Voith Sulzer Papiermasch Gmbh | Papermaking machine drying section |
US6260287B1 (en) * | 1997-08-08 | 2001-07-17 | Peter Walker | Wet web stability method and apparatus |
US6154981A (en) * | 1998-04-30 | 2000-12-05 | Valmet Corporation | Method and apparatus for improving the drying capacity of a hood covering a yankee cylinder |
US6442865B1 (en) | 1999-07-27 | 2002-09-03 | Voith Sulzer Papiertechnik Patent Gmbh | Drying section |
US20070245589A1 (en) * | 2006-04-19 | 2007-10-25 | Metso Paper, Inc. | Runnability of Web in a Material Web Machine |
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Owner name: VALMET-DOMINION INC., 795 FIRST AVENUE, LACHINE, Q Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VALMET OY;REEL/FRAME:004331/0750 Effective date: 19840503 |