EP1735497A1 - Paper manufacturing process - Google Patents
Paper manufacturing processInfo
- Publication number
- EP1735497A1 EP1735497A1 EP05736333A EP05736333A EP1735497A1 EP 1735497 A1 EP1735497 A1 EP 1735497A1 EP 05736333 A EP05736333 A EP 05736333A EP 05736333 A EP05736333 A EP 05736333A EP 1735497 A1 EP1735497 A1 EP 1735497A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibres
- polymer
- fibre
- man
- 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.)
- Withdrawn
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000835 fiber Substances 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 229920000642 polymer Polymers 0.000 claims abstract description 16
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 14
- 239000002023 wood Substances 0.000 claims abstract description 9
- 239000000725 suspension Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 125000000129 anionic group Chemical group 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 229920002907 Guar gum Polymers 0.000 claims description 2
- 239000000665 guar gum Substances 0.000 claims description 2
- 229960002154 guar gum Drugs 0.000 claims description 2
- 235000010417 guar gum Nutrition 0.000 claims description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 claims 1
- 239000001768 carboxy methyl cellulose Substances 0.000 claims 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 claims 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/06—Paper forming aids
- D21H21/10—Retention agents or drainage improvers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/25—Cellulose
- D21H17/26—Ethers thereof
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
- D21H17/24—Polysaccharides
- D21H17/31—Gums
- D21H17/32—Guar or other polygalactomannan gum
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
- D21H17/375—Poly(meth)acrylamide
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/20—Macromolecular organic compounds
- D21H17/33—Synthetic macromolecular compounds
- D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
- D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
- D21H17/43—Carboxyl groups or derivatives thereof
Definitions
- the present invention relates to a method for manufacturing a web comprising wood-based fibres and man-made fibres.
- the flocculation tendency can be alleviated by reducing the consistency of the pulp, but the production parameters may thus become such that the production is not possible with conventional machinery and/or the machine speeds must be dropped so low that the production is not profitable.
- Attempts have also been made to manufacture multi- layered paper, wherein diluted pulps can be run at a relatively high speed.
- paper qualities of similar types have been shifted to be manufactured by wet web formation with machinery for non- woven fabrics. To sum up, it has been problematic to run webs comprising man-made fibres in paper machines, and attempts have been made to solve this problem for about 30 years.
- the method according to the invention is characterized in that a poly- mer is added to a fibre suspension comprising wood-based fibres and man-made fibres, to improve the web formation and to slow down the removal of water in the wire section of the paper machine.
- the web can be manufactured by utilizing a normal paper machine construction, because there is no need to lower the consistency of the pulp, and thus the size of the slice is sufficient for dosing the pulp onto the wire.
- the consistency is about 1 % and the normal running speed is 800 m/min.
- the improvement in the web formation is manifested by the smoothness of the web.
- mechanical means can be used to have an effect on the placement of the fibres in the web.
- the mechanical means include, for example, the intrinsic improvement in the web formation during dewatering, due to the nature of the dewatering, because the fibres tend to move to locations with lower flow resistance and shear forces due to the speed difference between the headbox discharge and the wire.
- Other possible improving mechanisms include shearing forces generated by shaking of the wire and/or oscillation of the surface of the pulp layer.
- Further mechanical means include the effect of suction boxes underneath the forming wire, or it is possible to use a roll on the upper surface of the forming wire to prevent the formation of fibre bundles.
- the polymer to be used in the method according to the invention has a high molecular weight and is relatively unbranched.
- the polymer is preferably anionic.
- Suitable polymers to be used include, for example, anionic polyacryl- amide, CMC, guargum, or compounds of these.
- An anionic polyacryl- amide suitable for the purpose has a molecular weight of at least 10,000,000 g/mol and an electric charge density of about 30 %, and it is dosed 0.2 to 2 kg per ton of fibre.
- CMC has a molecular weight of at least 750,000 g/mol, and it is dosed 2 to 8 kg per ton of fibre.
- the dosage of the polymer can be reduced, because the polymer hardly adheres to the fibre and is thus returned to use.
- the pH value, at which the method works, is neutral or alkaline.
- the pH of the fibre suspension is adjusted to at least 6.5, for the polymer to function in the process.
- the polymer does not function at too high a pH value either.
- the polymer is added either into the pulp mixing tank, before the machine screen, or after the machine screen.
- the method according to the invention is used primarily in the manu- facture of wallpaper, particularly in connection with so-called paste-the- wall wallpapers (the adhesive agent is applied onto the wall to be papered and the dry wallpaper is placed onto the adhesive).
- the content of man-made fibres with a typical fibre length of 5 mm is often 10 weight-%, but in a wallpaper made by the method according to the invention, the content may be 15 to 50 weight-%.
- the man-made fibre to be used is polyester, because it has a density suitable for manufacturing with pulp fibres.
- the method is cost-efficient, as the paper can be made according to the conventional paper machine concept.
- the method according to the invention can be applied in products which are presently made by the wet web formation technique, such as filter papers, dust bags for vacuum cleaners, wet- strength towels, bed sheets and linen papers.
- FIG. 1 illustrates the formation (Ambertec formation) as a function of the consistency in the headbox.
- the dosage of anionic polyacrylamide was 1 to 2 kg per ton of fibre.
- the dosage of CMC was 5 to 10 kg per ton of fibre.
- the pH of the fibre suspension in connection with acrylamide was from 7 to 8.
- the pH of the fibre suspension in connection with CMC was from 7 to 8.
Landscapes
- Paper (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI20045132A FI20045132A (sv) | 2004-04-14 | 2004-04-14 | Papperstillverkningsprocess |
PCT/FI2005/050118 WO2005100689A1 (en) | 2004-04-14 | 2005-04-14 | Paper manufacturing process |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1735497A1 true EP1735497A1 (en) | 2006-12-27 |
Family
ID=32104260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05736333A Withdrawn EP1735497A1 (en) | 2004-04-14 | 2005-04-14 | Paper manufacturing process |
Country Status (7)
Country | Link |
---|---|
US (1) | US20070284070A1 (sv) |
EP (1) | EP1735497A1 (sv) |
JP (1) | JP2007532792A (sv) |
CN (1) | CN1942630A (sv) |
CA (1) | CA2561033A1 (sv) |
FI (1) | FI20045132A (sv) |
WO (1) | WO2005100689A1 (sv) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105786052B (zh) * | 2014-12-16 | 2020-09-08 | 艺康美国股份有限公司 | 一种用于pH调节的在线控制和反应方法 |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2626214A (en) * | 1949-06-14 | 1953-01-20 | C H Dexter & Sons Inc | Paper from long synthetic fibers and partially water soluble sodium carboxymethylcellulose and method |
US3019157A (en) * | 1958-10-06 | 1962-01-30 | American Cyanamid Co | Web-forming fibrous suspensions of improved freeness |
US3391057A (en) * | 1965-07-06 | 1968-07-02 | Dow Chemical Co | Suspensions of synthetic polymer fibrous products containing acrylamide polymer and method of making a paper web therefrom |
US3794557A (en) * | 1969-03-26 | 1974-02-26 | Johnson & Johnson | Method of making isotropic fibrous webs containing textile length fibers |
US3808095A (en) * | 1971-05-13 | 1974-04-30 | Johnson & Johnson | Wet-formed nonwoven textile fabrics and methods of making the same |
US3834983A (en) * | 1973-03-15 | 1974-09-10 | Dexter C & Sons Inc | Process of forming wet laid tufted non-woven fibrous web from a viscous fibrous dispersion and product |
US4200488A (en) * | 1975-02-20 | 1980-04-29 | International Paper Company | Viscous dispersion for forming wet-laid, non-woven fabrics |
GR65316B (en) * | 1978-06-20 | 1980-08-02 | Arjomari Prioux | Method for the preparation of fibrous leaf |
US4822452A (en) * | 1987-04-06 | 1989-04-18 | James River Corporation Of Virginia | Manufacture of wet laid nonwoven webs |
US4925528A (en) * | 1987-04-06 | 1990-05-15 | James River Corporation Of Virginia | Manufacture of wetlaid nonwoven webs |
US5403444A (en) * | 1990-03-05 | 1995-04-04 | International Paper Company | Printable, high-strength, tear-resistant nonwoven material and related method of manufacture |
US5133835A (en) * | 1990-03-05 | 1992-07-28 | International Paper Company | Printable, high-strength, tear-resistant nonwoven material and related method of manufacture |
US5238534A (en) * | 1992-01-24 | 1993-08-24 | James River Corporation Of Virginia | Wetlaid nonwovens on high speed machines |
SE9502522D0 (sv) * | 1995-07-07 | 1995-07-07 | Eka Nobel Ab | A process for the production of paper |
US6379497B1 (en) * | 1996-09-20 | 2002-04-30 | Fort James Corporation | Bulk enhanced paperboard and shaped products made therefrom |
US6113741A (en) * | 1996-12-06 | 2000-09-05 | Eka Chemicals Ab | Process for the production of paper |
CA2676732C (en) * | 1998-06-12 | 2014-04-15 | Georgia-Pacific Consumer Products Lp | Method of making a paper web having a high internal void volume of secondary fibers and a product made by the process |
CA2443885A1 (en) * | 2002-10-02 | 2004-04-02 | Fort James Corporation | Paper products including surface treated thermally bondable fibers and methods of making the same |
-
2004
- 2004-04-14 FI FI20045132A patent/FI20045132A/sv unknown
-
2005
- 2005-04-14 EP EP05736333A patent/EP1735497A1/en not_active Withdrawn
- 2005-04-14 US US11/578,584 patent/US20070284070A1/en not_active Abandoned
- 2005-04-14 WO PCT/FI2005/050118 patent/WO2005100689A1/en active Application Filing
- 2005-04-14 JP JP2007507808A patent/JP2007532792A/ja active Pending
- 2005-04-14 CA CA002561033A patent/CA2561033A1/en not_active Abandoned
- 2005-04-14 CN CNA200580011274XA patent/CN1942630A/zh active Pending
Non-Patent Citations (1)
Title |
---|
See references of WO2005100689A1 * |
Also Published As
Publication number | Publication date |
---|---|
FI20045132A (sv) | 2005-10-15 |
CN1942630A (zh) | 2007-04-04 |
WO2005100689A8 (en) | 2006-04-20 |
JP2007532792A (ja) | 2007-11-15 |
CA2561033A1 (en) | 2005-10-27 |
US20070284070A1 (en) | 2007-12-13 |
WO2005100689A1 (en) | 2005-10-27 |
FI20045132A0 (sv) | 2004-04-14 |
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Legal Events
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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17P | Request for examination filed |
Effective date: 20061016 |
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AK | Designated contracting states |
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DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20091001 |