US3891501A - Multilayer paper making machine - Google Patents
Multilayer paper making machine Download PDFInfo
- Publication number
- US3891501A US3891501A US335090A US33509073A US3891501A US 3891501 A US3891501 A US 3891501A US 335090 A US335090 A US 335090A US 33509073 A US33509073 A US 33509073A US 3891501 A US3891501 A US 3891501A
- Authority
- US
- United States
- Prior art keywords
- paper
- layer
- inverform
- wire
- fourdrinier wire
- 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
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
- D21F11/02—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type
- D21F11/04—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines of the Fourdrinier type paper or board consisting on two or more layers
Definitions
- a combination-paper making machine comprising a Fourdrinier wire on which is formed the first layer of a multi-layer paper sheet, a looped conveying felt placed adjacent to the wire; an inverform unit comprising a second layer-making unit for forming a second layer on the first layer, and is placed over the one end of said Fourdrinier wire and the opposite end of the looped conveying felt, and preferably successive inverform layer making units for forming in turn a third and other successive layers, each of said inverform units having at the bottom part thereof a dehydration mechanism whereby the texture of said multilayer paper is formed.
- the apparatus of the present invention relates to an improved combination-paper making machine in which multi-layer paper is formed by putting the second and preferably following paper layers in turn over the first paper layer.
- the combination-paper making machine should form the first layer which is a base of the multilayer paper, in a considerable thickness while forming an excellent texture paper.
- a conventional combination-paper making machine in which all the layer making units including the first paper layer forming unit cooperate with a common bottom wire never meets the aforementioned requirements, because of limited length of the bottom wire and the difficulties in weighing of the first paper layer as well as other adjustments.
- An object of this invention is to provide a novel, unique combination-paper making machine or device which does not have the above disadvantages of the conventional paper making machines.
- a further object is to provide a machine according to this invention which has the feature of a looped conveying felt adjacent to or in the neighborhood of the Fourdrinier wire which functions to form the first layer of the multi-layer paper.
- An inverform second layermaking unit is positioned or laid over the adjacent end of said wire part opposite to said first head box means for supplying paper pulp to the Fourdrinier wire.
- Said inverform unit is positioned adjacent the one end of the looped conveying felt.
- This inverform layer making unit cooperates with the part of the Fourdrinier wire adjacent thereto and allows the second paper layer to combine with the travelling first layer formed on the said Fourdrinier wire.
- This inverform layer making unit cooperates with the combined paper layer to lead the so formed paper layer onto the end of the looped conveying felt successively.
- the inverform, second layermaking unit serves as means for conveying the doubly combined paper layer onto the looped felt as well as for making the second paper layer.
- the paper making machine has the provision along the top running part of said conveying felt for plural pairs of inverform making units for forming in turn and combining the third and successive paper layers, said inverform making units having each a dehydration mechanism at its lower part which constitutes a means for forming texture of the paper.
- the drawing shows in schematic form a combinationpaper making machine according to this invention.
- reference numeral 1 represents connectively for forming the first layer a Fourdrinier wire, which comprises an endlessly moving foraminous belt.
- a looped conveying felt (2) or bottom felt (2) is arranged is adjacent to said Fourdrinier wire (1);
- an inverform second-layer forming unit 3 is laid over and joins the end of the wire Fourdrinier 1 and the end of the looped conveying felt 2;
- means 4 are provided for forming the third and successive layers placed along the top reach or running part 2a of the conveying felt 2 adjacent to the inverform second layer-making unit 3', said means 4 which comprises several pairs of inverform making units and bottom conveying felts for forming the third and successive layers of paper in turn.
- inverform layer making unit for the third and successive layers is shown in the drawing with only three inverform short wire units 4a, 4b, and 4c, the number of said units can be suitably increased or decreased.
- a low nip pressure press part 20 is provided along the top reach or running part 20 of the conveying felt 2.
- the Fourdrinier wire part 1 may be that of the usual Fourdrinier paper machine.
- a paper slurry is supplied over the wire 7 from the head box 6 to form the first paper layer.
- the second paper layer is formed by the inverform, second paper layenmaking unit 3.
- This inverform second layer-making unit 3 has a relatively short wire 9 running around several guide rolls in the direction of the arrow, and is provided with a suitable dehydration mechanism 30 at the bottom part thereof to constitute a texture-forming unit.
- a head box 10 is positioned adjacent to the inverform unit 3 for the second layer on the inlet side of the texture-forming part, and the paper pulp slurry is supplied over the first layer in the space between the running parts of the upper and lower wires 9 and 7, while water is removed upward from the paper pulp slurry (i.e.
- the inverform, second layer-making unit 3 Since the inverform, second layer-making unit 3 is laid over the one end of the foraminous wire part 1 and the one end of the conveying felt 2, the doubly combined paper layer is taken out of the wire 7 at at the other end through the inverform, a second layenmaking unit 3 to be transferred onto the top running part 2a of the con veying felt 2.
- the second layer-making unit 3 serves as means for transferring the second layer to the felt 2 as well as means for forming it. Therefore, it is unnecessary to provide an open draw system in order to transfer the paper layer from the wire 7 to the felt 2, resulting in an increased operation efficiency because of no accompanying paper breakage ascribed to the open draw.
- the inverform making units 4a, 4b and 40 for the third and successive layers are arranged in turn along the top running part 2a of the looped conveying felt 2 are constructed in a manner similar to the inverform, second layer-making unit 3.
- the paper pulp stuff supplied from the head box 11 for the third layer is laid in the space between the bottom running part of a looped short wire of the inverform, third layer-making unit 40 and the top running part 2a of the long continuing, looped conveying felt 2, and then undergoes upward dehydration by means of dehydration mechanism 31 to form triple layer combined paper.
- the fourth and fifth paper layers are combined in succession through the inverform layer making units 4b and 4c and so on.
- the multi-layer paper having a desired number oflayers is sent to the low nip pressure press part 5 by means of the conveying felt 2 and further dehydrated with mechanisms 32 and 33.
- the low nip pressure press part 5 is provided with several pairs of press roll means which form a pressure nip in a pair between them, and has an endless felt 21 travelling around a plurality of guide rolls. Said felt cooperates with the bottom, continuing conveying felt 2 with holding the multi-laycr paper of completed combination between both the felts. The paper layer is pressed while travelling through nips of the press roll means 20 transferring water onto the felt.
- This low nip pressure press part is provided to get easy dehydration under high nip pressure in the next step.
- the present device can achieve easy adjusting of weighing, making velocity, and texture formation of the first layer, and thereby form combined paper capable of meeting the various requirements, because the first layer having serious influence on the quality of the combined paper is formed through a Fourdrinier type wire part.
- multilayer paper can be produced with a considerably short cned length of Fourdrinier wire. Hence difficulties such as increased weight of wire when making multi-layer paper with a Fourdrinier wire alone can be avoided in this device.
- Combination paper making machine which comprises a Fourdrinier wire comprising an endless foraminous belt defining a paper forming path, headbox means for supplying a first paper forming slurry to one end of said Fourdrinier wire, a looped conveying felt having one end adjacent the Fourdrinier wire and the other end away from said Fourdrinier wire, at least one inverform paper layer making endless wire means extending over and between said Fourdrinier wire and said looped conveying felt, and second headbox means adjacent to said Fourdrinier wire and before said inverform paper layer making means for supplying a second paper forming slurry on top of said first paper forming slurry on said Fourdrinier wire.
- Combination paper making machine wherein at least one additional inverform paper layer making endless wire means is positioned over and upon said looped conveying felt and adjacnet the inverform paper layer making means extending over and between the Fourdrinier wire and the looped conveying felt.
- Combination paper making machine wherein said additional inverform means includes means for dehydration of said paper, whereby a multilayer paper of the desired texture is produced.
- Combination paper making machine including a low nip pressure press adjacent the end of said looped conveying felt away from said Fourdrinier wire.
- Combination paper making machine including a low nip pressure press adjacent the end of said looped conveying felt away from said Fourdrinier wire.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1972024146U JPS513203Y2 (de) | 1972-02-29 | 1972-02-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3891501A true US3891501A (en) | 1975-06-24 |
Family
ID=12130177
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US335090A Expired - Lifetime US3891501A (en) | 1972-02-29 | 1973-02-23 | Multilayer paper making machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US3891501A (de) |
JP (1) | JPS513203Y2 (de) |
DE (1) | DE2310445C3 (de) |
GB (1) | GB1387109A (de) |
IT (1) | IT979629B (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5002638A (en) * | 1988-06-13 | 1991-03-26 | Appleton Mills | Papermaking machine in which the paper web is supported in the draw between the press and dryer sections |
US5507104A (en) * | 1987-02-13 | 1996-04-16 | Beloit Technologies, Inc. | Web drying apparatus |
US5832625A (en) * | 1987-02-13 | 1998-11-10 | Beloit Technologies, Inc. | Apparatus for drying a web |
US6049999A (en) * | 1987-02-13 | 2000-04-18 | Beloit Technologies, Inc. | Machine and process for the restrained drying of a paper web |
US20070163736A1 (en) * | 2004-02-13 | 2007-07-19 | Kari Raisanen | Multi-layer web formation section |
US20090173463A1 (en) * | 2006-04-07 | 2009-07-09 | Gruppo Cordenons S.P.A. | Security paper material, in particular for labelling and packaging, and manufacturing method thereof |
US7608165B2 (en) * | 2004-02-13 | 2009-10-27 | Metso Paper, Inc. | Multi-layer web formation section |
US10760220B2 (en) * | 2014-04-23 | 2020-09-01 | Hewlett-Packard Development Company, L.P. | Packaging material and method for making the same |
US11680371B2 (en) * | 2017-10-18 | 2023-06-20 | Solenis Technologies, L.P. | Method for producing multi-layer paper |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI75383C (fi) * | 1986-02-11 | 1988-06-09 | Ahlstroem Oy | Foerfarande foer framstaellning av flerskiktskartong. |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
US3681193A (en) * | 1969-03-03 | 1972-08-01 | Tampella Oy Ab | Apparatus for producing separate paper webs and combining them on a common porous belt |
-
1972
- 1972-02-29 JP JP1972024146U patent/JPS513203Y2/ja not_active Expired
-
1973
- 1973-02-23 US US335090A patent/US3891501A/en not_active Expired - Lifetime
- 1973-02-28 IT IT7321045A patent/IT979629B/it active
- 1973-02-28 DE DE2310445A patent/DE2310445C3/de not_active Expired
- 1973-02-28 GB GB981673A patent/GB1387109A/en not_active Expired
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3681193A (en) * | 1969-03-03 | 1972-08-01 | Tampella Oy Ab | Apparatus for producing separate paper webs and combining them on a common porous belt |
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 |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5507104A (en) * | 1987-02-13 | 1996-04-16 | Beloit Technologies, Inc. | Web drying 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 |
US6049999A (en) * | 1987-02-13 | 2000-04-18 | Beloit Technologies, Inc. | Machine and process for the restrained drying of a paper web |
US5002638A (en) * | 1988-06-13 | 1991-03-26 | Appleton Mills | Papermaking machine in which the paper web is supported in the draw between the press and dryer sections |
US20070163736A1 (en) * | 2004-02-13 | 2007-07-19 | Kari Raisanen | Multi-layer web formation section |
US7608165B2 (en) * | 2004-02-13 | 2009-10-27 | Metso Paper, Inc. | Multi-layer web formation section |
US7931777B2 (en) * | 2004-02-13 | 2011-04-26 | Metso Paper, Inc. | Multi-layer web formation section |
US20090173463A1 (en) * | 2006-04-07 | 2009-07-09 | Gruppo Cordenons S.P.A. | Security paper material, in particular for labelling and packaging, and manufacturing method thereof |
US8691051B2 (en) * | 2006-04-07 | 2014-04-08 | Gruppo Cordenons S.P.A. | Security paper material, in particular for labelling and packaging, and manufacturing method thereof |
US10760220B2 (en) * | 2014-04-23 | 2020-09-01 | Hewlett-Packard Development Company, L.P. | Packaging material and method for making the same |
US11680371B2 (en) * | 2017-10-18 | 2023-06-20 | Solenis Technologies, L.P. | Method for producing multi-layer paper |
Also Published As
Publication number | Publication date |
---|---|
IT979629B (it) | 1974-09-30 |
DE2310445B2 (de) | 1975-01-16 |
JPS513203Y2 (de) | 1976-01-30 |
GB1387109A (en) | 1975-03-12 |
JPS48100904U (de) | 1973-11-28 |
DE2310445A1 (de) | 1973-09-20 |
DE2310445C3 (de) | 1975-08-21 |
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