US3810817A - Twin-wire papermaking machine with vibrators connected to suction and liquid delivery boxes located beneath the converging wires - Google Patents
Twin-wire papermaking machine with vibrators connected to suction and liquid delivery boxes located beneath the converging wires Download PDFInfo
- Publication number
- US3810817A US3810817A US00192079A US19207971A US3810817A US 3810817 A US3810817 A US 3810817A US 00192079 A US00192079 A US 00192079A US 19207971 A US19207971 A US 19207971A US 3810817 A US3810817 A US 3810817A
- Authority
- US
- United States
- Prior art keywords
- wire
- wires
- suction
- liquid
- boxes
- 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 - Lifetime
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/18—Shaking apparatus for wire-cloths and associated parts
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
Definitions
- Vibrators are connected to the suction and liquid discharge boxes for oscillation at an angle of between about 20 and 50 degrees to the plane of the wire passing thereover.
- Slurry passages (which may be oscillated also) are located beneath the slurry contained between the converging wires and function to deliver as well as remove slurry.
- the invention relates to a papermaking machine with at least one traveling wire with a sheet formation area in which on one side of the wire a sheet is formed by deposition of fibres from a suspension, and on the other side of the wire liquid is sucked away, with passages for suspension, opening against the one side of the wire, and channels for liquid, opening against the other side of the wire.
- the suspension is fed to the wire through passages opening against the wire and arranged consecutively in the direction of wire travel.
- the liquid from the suspension is sucked away through channels on the other side of the wire, arranged consecutively in the direction of wire travel.
- the purpose of the invention is to make possible a better control over the deposition of fibres on the wire.
- the problem is solved, according to the invention, by using at least one of the suspension passages for removing suspension from the wire, or by using at least one of the liquid channels for feeding liquid to the wire or by use of both of these expedients.
- zones within the sheet formation area i.e. in the immediate neighborhood of the wire, are arranged in which suspension is removed from the wire, the desired direction and amount of fibre deposition on the wire can be easily achieved.
- zones on the side of the wire opposite to the sheet from which liquid is not removed but into which liquid is fed. the fibres already deposited on the wire can be loosened again.
- the channel walls and the passage walls into oscillations of periodic frequency above 800 per minute, the direction of oscillating lying preferably at an angle of at least 20 degrees relatively to the plane of the wire.
- a very advantageous machine is obtained if the liquid channels are situated in a box, of the type commonly used as a suction box, the wire-supporting wall of the box being convex domed. The wire then remains pressed against the box due to wire tension, even within the zone of liquid flowing towards the wire.
- boxes 9, 10 and 11, 12 On the other side of wires 1 and 2 are situated boxes 9, 10 and 11, 12 respectively.
- the box 9 is subdivided into channels 13, 15, 17, 19, and the box 10 into channels 14 16, 18, 20.
- the passages 5, 6, 7 are for feeding suspension while the passages 4 and 8 remove suspension from the neighborhood of wires 1 and 2, respectively.
- the passages 5 and 7 could be used for removal of suspension.
- Each flow connection includes a pump P having a valve V in its inlet whereby the flow rate may be controlled.
- the formation of the sheet can also be influenced by oscillating the channel walls and passage walls at periodic frequencies above 800 per minute. Vibrators 23 for this purpose are fitted to the boxes 9, 10, 11 and 12. The vibrator for the walls of channels 4 to 8 is not shown in the drawing.
- the direction of oscillating is shown in the drawing by double arrows.
- the direction of oscillating is at an angle of at least 20 degrees relatively to the plane of the wire, i.e. for suction boxes 9 and 10 at an angle of about 50 degrees, for suction boxes 11 and 12 at an angle of 30 degrees, and for the walls of passages 4 to 8 at angles of from 20 to 30 degrees.
- a papermaking machine of the twin wire type including two traveling wires, a headbox, means to supply a liquid suspension of fibres to said headbox, the headbox having bottom Walls over which corresponding wires travel and converge toward one another and means to withdraw liquid from said suspension through said wires and through said bottom walls
- the improvement which comprises:
- said means to supply liquid of suspension comprises a box having a convex, Wire supporting surface.
Landscapes
- Paper (AREA)
Abstract
A twin-wire papermaking machine wherein separate foraminous wires converge towards one another while passing over separately controlled, convex domed suction boxes and thereafter join together to form the fibrous web therebetween as the wires pass over opposing foils. Between some of the separately controlled suction boxes are located liquid discharge boxes for injecting liquid into the fibrous suspension contained between the converging wires. Vibrators are connected to the suction and liquid discharge boxes for oscillation at an angle of between about 20 and 50 degrees to the plane of the wire passing thereover. Slurry passages (which may be oscillated also) are located beneath the slurry contained between the converging wires and function to deliver as well as remove slurry.
Description
H. F. ARLEDTER TWIN WIRE PAPERMAKING MACHINE WITH VIBRATORS CONNECTED May 14, 1974 3,810,817
TO SUCTION AND LIQUID DELIVERY BOXES LOCATED BENEATH THE CONVERGING WIRES Filed Oct. 26, 1971 United States Patent Oflice 3,810,817 Patented May 14, 1974 US. Cl. 162-301 6 Claims ABSTRACT OF THE DISCLOSURE A twin-wire papermaking machine wherein separate foraminous wires converge towards one another while passing over separately controlled, convex domed suction boxes and thereafter join together to form the fibrous web therebetween as the wires pass over opposing foils. Between some of the separately controlled suction boxes are located liquid discharge boxes for injecting liquid into the fibrous suspension contained between the converging wires. Vibrators are connected to the suction and liquid discharge boxes for oscillation at an angle of between about 20 and 50 degrees to the plane of the wire passing thereover. Slurry passages (which may be oscillated also) are located beneath the slurry contained between the converging wires and function to deliver as well as remove slurry.
BACKGROUND OF THE INVENTION The invention relates to a papermaking machine with at least one traveling wire with a sheet formation area in which on one side of the wire a sheet is formed by deposition of fibres from a suspension, and on the other side of the wire liquid is sucked away, with passages for suspension, opening against the one side of the wire, and channels for liquid, opening against the other side of the wire.
With a known papermaking machine, the suspension is fed to the wire through passages opening against the wire and arranged consecutively in the direction of wire travel. In a similar way, the liquid from the suspension is sucked away through channels on the other side of the wire, arranged consecutively in the direction of wire travel. By regulating the supply of suspension, and the removal of liquid through the respective channels the deposition of fibres on the wire can be controlled.
The purpose of the invention is to make possible a better control over the deposition of fibres on the wire. For the type of papermaking machine described at the outset, the problem is solved, according to the invention, by using at least one of the suspension passages for removing suspension from the wire, or by using at least one of the liquid channels for feeding liquid to the wire or by use of both of these expedients.
Since zones within the sheet formation area, i.e. in the immediate neighborhood of the wire, are arranged in which suspension is removed from the wire, the desired direction and amount of fibre deposition on the wire can be easily achieved. By arranging zones on the side of the wire opposite to the sheet, from which liquid is not removed but into which liquid is fed. the fibres already deposited on the wire can be loosened again.
If it is desired to counteract the tendency of the fibres to orient themselves in the direction of wire travel, it is advantageous to set the channel walls and the passage walls into oscillations of periodic frequency above 800 per minute, the direction of oscillating lying preferably at an angle of at least 20 degrees relatively to the plane of the wire.
It is of advantage to include regulating devices to control the quantities of suspension or liquid, respectively, flowing in the channels and passages.
A very advantageous machine is obtained if the liquid channels are situated in a box, of the type commonly used as a suction box, the wire-supporting wall of the box being convex domed. The wire then remains pressed against the box due to wire tension, even within the zone of liquid flowing towards the wire.
BRIEF DESCRIPTION OF THE DRAWING In the drawing, with the help of which the invention is described in detail, an embodiment of the invention is shown in simplified manner. The figure shows a vertical section, in the direction of wire travel, through the sheet formation area of a papermaking machine.
DESCRIPTION OF THE PREFERRED EMBODIMENT Two wires 1 and 2 pass through the sheet formation area and come together in a double wire section. Between the wires 1 and 2 is a bath 3 of suspension, contained in a headbox 3', out of which a sheet is formed by fibre deposition on the wires 1 and 2. Five passages 4, 5, 6, 7 and 8 open into the bath 3. The passages 4, 5, 6 open into the bath 3 in the immediate neighborhood of wire 1, with their mouths arranged consecutively in the direction of travel of wire 1. The passages 8, 7, 6 open into the immediate neighborhood of wire 2, with the channel mouths arranged consecutively in the direction of travel of wire 2.
On the other side of wires 1 and 2 are situated boxes 9, 10 and 11, 12 respectively. The box 9 is subdivided into channels 13, 15, 17, 19, and the box 10 into channels 14 16, 18, 20.
At the end of bath 3, Le. just before the two wires 1 and 2 come together, are situated foils 21 and 22.
Of the suspension passages 4 to 8, the passages 5, 6, 7 are for feeding suspension while the passages 4 and 8 remove suspension from the neighborhood of wires 1 and 2, respectively. However, if desired the passages 5 and 7 could be used for removal of suspension.
While the channels 13, 17, 19 and 14, 18, 20 of the boxes 9 annd 10, respectively serve as suction channels to such away liquid from the suspension, the channels 15 and 16 of these boxes deliver liquid to the wires 1 and 2, respectively. This back flow of liquid into the bath 3 could be from the channels 17 and 18, or could be repeated in the channels 19, 20.
The passages 4 to 8 and channels 13 to 20 and for the channels of the boxes 11 and 12, serve as supplies or as returns as indicated by the arrows in the drawing. Each flow connection includes a pump P having a valve V in its inlet whereby the flow rate may be controlled.
In addition, the formation of the sheet can also be influenced by oscillating the channel walls and passage walls at periodic frequencies above 800 per minute. Vibrators 23 for this purpose are fitted to the boxes 9, 10, 11 and 12. The vibrator for the walls of channels 4 to 8 is not shown in the drawing.
The direction of oscillating is shown in the drawing by double arrows. The direction of oscillating is at an angle of at least 20 degrees relatively to the plane of the wire, i.e. for suction boxes 9 and 10 at an angle of about 50 degrees, for suction boxes 11 and 12 at an angle of 30 degrees, and for the walls of passages 4 to 8 at angles of from 20 to 30 degrees.
Under papermaking machine in the sense of the invention is also understood a machine for producing a paper-like sheet, for example a machine for production of non-woven webs.
I claim:
1. In a papermaking machine of the twin wire type including two traveling wires, a headbox, means to supply a liquid suspension of fibres to said headbox, the headbox having bottom Walls over which corresponding wires travel and converge toward one another and means to withdraw liquid from said suspension through said wires and through said bottom walls the improvement which comprises:
(a) means to deliver liquid of suspension into said headbox through at least one bottom wall and the corresponding wire; and
(b) oscillating means connected to vibrate said means to deliver liquid at a frequency above 800 cycles per minute,
() the direction of the oscillation being at angle of at least 20 to the direction of wire travel.
2. The machine defined in claim 1 including:
means regulating the rate of flow of liquid through said means to deliver the liquid.
3. The machine defined in claim 2 including:
means to remove a portion of the liquid suspension of fibres from said headbox through a flow path having an inlet in said headbox adjacent the surface of said wire.
4. The machine defined in claim 1 including:
means to remove a portion of the liquid suspension of fibres from said headbox through a flow path having an inlet in said headbox adjacent the surface of said wire.
said means to supply liquid of suspension comprises a box having a convex, Wire supporting surface.
References Cited UNITED STATES PATENTS 2,028,952 1/1936 Reimer 162-208 X 3,516,905 6/1970 Dennis et al 162-337 2,116,168 5/1938 Fish et al. 162-355 X 1,881,105 1 0/1932 Vedder 162-355 2,488,700 11/1949 Bidwell 162-348 X 3,463,700 8/1969 Brewster et al 162-308 1,875,075 8/1932 Mason 162-203 X 3,149,028 9/1964 Robinson 162-303 3,549,487 12/1970 Clark 162-209 X FOREIGN PATENTS 1,005,530 12/1951 France 162-209 560,577 4/1944 Great Britain 162-341 S. LEON BASHORE, Primary Examiner R. H. TUSHIN, Assistant Examiner US. Cl. X.R.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT976470A AT322963B (en) | 1970-10-30 | 1970-10-30 | METHOD OF SHEET FORMING IN A TWIN-SCREEN PAPER MACHINE |
Publications (1)
Publication Number | Publication Date |
---|---|
US3810817A true US3810817A (en) | 1974-05-14 |
Family
ID=3617060
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00192079A Expired - Lifetime US3810817A (en) | 1970-10-30 | 1971-10-26 | Twin-wire papermaking machine with vibrators connected to suction and liquid delivery boxes located beneath the converging wires |
Country Status (6)
Country | Link |
---|---|
US (1) | US3810817A (en) |
AT (1) | AT322963B (en) |
CA (1) | CA966341A (en) |
DE (2) | DE2152958A1 (en) |
FR (1) | FR2113332A5 (en) |
GB (1) | GB1374629A (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048008A (en) * | 1975-02-13 | 1977-09-13 | Slovenska Vysoka Skola Technicka | Method of and apparatus for forming sheets of fibrous material between converging sieves |
US4184913A (en) * | 1978-03-31 | 1980-01-22 | Western Electric Company, Incorporated | Methods of simultaneously covering each of a plurality of elongated materials with uniformly weighted pulp insulation |
US4224105A (en) * | 1979-03-02 | 1980-09-23 | Western Electric Company, Inc. | Apparatus for simultaneously covering each of a plurality of elongated materials with uniformly weighted pulp insulation |
US4515542A (en) * | 1983-07-05 | 1985-05-07 | Austria Tabkwerke Aktiengesellschaft vorm. Osterreischische Tabakregie | Apparatus for the production of a reconstituted tobacco foil |
US4648943A (en) * | 1984-05-18 | 1987-03-10 | Valmet-Dominion Inc. | Vibrating forming shoe in a twin wire former |
US4999087A (en) * | 1984-10-03 | 1991-03-12 | Research Association For Pulp And Paper Technology | Twin wire forming apparatus with positive pressure foils |
WO1991006704A1 (en) * | 1989-11-03 | 1991-05-16 | Rodriguez Peter A | Method and apparatus for recovering pulp solids from whitewater |
US5056195A (en) * | 1989-06-29 | 1991-10-15 | Isover Saint-Gobain | Mineral fiber collection process and device |
US5065478A (en) * | 1989-06-29 | 1991-11-19 | Isover Saint-Gobain | Process and device for the reception of mineral fibers |
US5196090A (en) * | 1989-11-03 | 1993-03-23 | Glauco Corbellini | Method for recovering pulp solids from whitewater using a siphon |
WO1997008383A1 (en) * | 1995-08-23 | 1997-03-06 | Thermo Fibertek Inc. | Activity induction in papermaking |
US5863387A (en) * | 1997-05-01 | 1999-01-26 | Voith Sulzer Technology North America, Inc | Ultrasonic device for deflocculating fiber suspension in a paper-making machine headbox nozzle |
WO2002061202A2 (en) * | 2000-12-22 | 2002-08-08 | Vibre-Tech Llc | Method and apparatus for use of vibrational force in papermaking |
US20040140077A1 (en) * | 2001-12-21 | 2004-07-22 | Bricco Michael J. | Method and apparatus for forming a paper or tissue web |
CN111819324A (en) * | 2018-01-05 | 2020-10-23 | 国际纸业公司 | Paper product with increased bending stiffness and transverse strength and method for manufacturing the same |
RU2771697C2 (en) * | 2018-01-05 | 2022-05-11 | Интернэшнл Пэйпа Кампани | Paper products exhibiting high bending stiffness and strength in the transverse direction, and methods for production thereof |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3107926A1 (en) * | 1981-03-02 | 1982-11-04 | Escher Wyss Gmbh, 7980 Ravensburg | METHOD FOR FORMING A MULTILAYER PAPER SHEET IN A DOUBLE SCREEN FORM AND DOUBLE SCREEN FORM FOR IMPLEMENTING THE METHOD |
AT374843B (en) * | 1982-07-23 | 1984-06-12 | Escher Wyss Gmbh | MULTIPLE MATERIAL FEEDER FOR PARTICULAR PAPER MACHINES |
FI85885C (en) * | 1987-11-25 | 1992-06-10 | Tampella Oy Ab | FOERFARANDE FOER FORMERING AV EN FIBERBANA I EN PAPPERSMASKIN SAMT EN ANORDNING FOER UTFOERING AV FOERFARANDET. |
JPH01314797A (en) * | 1988-03-30 | 1989-12-19 | Beloit Corp | Apparatus and method for forming web |
-
1970
- 1970-10-30 AT AT976470A patent/AT322963B/en not_active IP Right Cessation
-
1971
- 1971-10-23 DE DE19712152958 patent/DE2152958A1/en active Pending
- 1971-10-23 DE DE19712152959 patent/DE2152959A1/en active Pending
- 1971-10-26 US US00192079A patent/US3810817A/en not_active Expired - Lifetime
- 1971-10-28 FR FR7138695A patent/FR2113332A5/fr not_active Expired
- 1971-10-29 GB GB5050371A patent/GB1374629A/en not_active Expired
- 1971-10-29 CA CA126,425A patent/CA966341A/en not_active Expired
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4048008A (en) * | 1975-02-13 | 1977-09-13 | Slovenska Vysoka Skola Technicka | Method of and apparatus for forming sheets of fibrous material between converging sieves |
US4184913A (en) * | 1978-03-31 | 1980-01-22 | Western Electric Company, Incorporated | Methods of simultaneously covering each of a plurality of elongated materials with uniformly weighted pulp insulation |
US4224105A (en) * | 1979-03-02 | 1980-09-23 | Western Electric Company, Inc. | Apparatus for simultaneously covering each of a plurality of elongated materials with uniformly weighted pulp insulation |
US4515542A (en) * | 1983-07-05 | 1985-05-07 | Austria Tabkwerke Aktiengesellschaft vorm. Osterreischische Tabakregie | Apparatus for the production of a reconstituted tobacco foil |
US4648943A (en) * | 1984-05-18 | 1987-03-10 | Valmet-Dominion Inc. | Vibrating forming shoe in a twin wire former |
US4999087A (en) * | 1984-10-03 | 1991-03-12 | Research Association For Pulp And Paper Technology | Twin wire forming apparatus with positive pressure foils |
US5056195A (en) * | 1989-06-29 | 1991-10-15 | Isover Saint-Gobain | Mineral fiber collection process and device |
US5065478A (en) * | 1989-06-29 | 1991-11-19 | Isover Saint-Gobain | Process and device for the reception of mineral fibers |
US5268015A (en) * | 1989-06-29 | 1993-12-07 | Isover Saint-Gobain | Process for the reception of mineral fibers |
WO1991006704A1 (en) * | 1989-11-03 | 1991-05-16 | Rodriguez Peter A | Method and apparatus for recovering pulp solids from whitewater |
US5196090A (en) * | 1989-11-03 | 1993-03-23 | Glauco Corbellini | Method for recovering pulp solids from whitewater using a siphon |
US5681430A (en) * | 1995-08-23 | 1997-10-28 | Thermo Fibertek Inc. | Activity induction in papermaking |
WO1997008383A1 (en) * | 1995-08-23 | 1997-03-06 | Thermo Fibertek Inc. | Activity induction in papermaking |
US5863387A (en) * | 1997-05-01 | 1999-01-26 | Voith Sulzer Technology North America, Inc | Ultrasonic device for deflocculating fiber suspension in a paper-making machine headbox nozzle |
US20040149415A1 (en) * | 2000-12-22 | 2004-08-05 | Vibre-Tech Llc | Method and apparatus for forming a paper or tissue web |
WO2002061202A3 (en) * | 2000-12-22 | 2002-10-10 | Vibre Tech Llc | Method and apparatus for use of vibrational force in papermaking |
US6702925B2 (en) | 2000-12-22 | 2004-03-09 | Vibre-Tech Llc | Method and apparatus for forming a paper or tissue web |
WO2002061202A2 (en) * | 2000-12-22 | 2002-08-08 | Vibre-Tech Llc | Method and apparatus for use of vibrational force in papermaking |
US7169262B2 (en) | 2000-12-22 | 2007-01-30 | Vibre-Tech Llc | Method and apparatus for forming a paper or tissue web |
US20040140077A1 (en) * | 2001-12-21 | 2004-07-22 | Bricco Michael J. | Method and apparatus for forming a paper or tissue web |
US7101462B2 (en) | 2001-12-21 | 2006-09-05 | Vibre-Tech, Llc | Method and apparatus for forming a paper or tissue web |
US20070068644A1 (en) * | 2001-12-21 | 2007-03-29 | Vibre-Tech, Llc. | Method and apparatus for forming a paper or tissue web |
CN111819324A (en) * | 2018-01-05 | 2020-10-23 | 国际纸业公司 | Paper product with increased bending stiffness and transverse strength and method for manufacturing the same |
CN111819325A (en) * | 2018-01-05 | 2020-10-23 | 国际纸业公司 | Paper product with increased bending stiffness and transverse strength and method for manufacturing the same |
RU2771697C2 (en) * | 2018-01-05 | 2022-05-11 | Интернэшнл Пэйпа Кампани | Paper products exhibiting high bending stiffness and strength in the transverse direction, and methods for production thereof |
US11441268B2 (en) * | 2018-01-05 | 2022-09-13 | International Paper Company | Paper products having increased bending stiffness and cross-direction strength and methods for making the same |
Also Published As
Publication number | Publication date |
---|---|
GB1374629A (en) | 1974-11-20 |
CA966341A (en) | 1975-04-22 |
DE2152958A1 (en) | 1972-05-25 |
AT322963B (en) | 1975-06-25 |
FR2113332A5 (en) | 1972-06-23 |
DE2152959A1 (en) | 1972-05-25 |
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