EP1397553A1 - Method and machine for the production of a fibre web - Google Patents
Method and machine for the production of a fibre webInfo
- Publication number
- EP1397553A1 EP1397553A1 EP02780825A EP02780825A EP1397553A1 EP 1397553 A1 EP1397553 A1 EP 1397553A1 EP 02780825 A EP02780825 A EP 02780825A EP 02780825 A EP02780825 A EP 02780825A EP 1397553 A1 EP1397553 A1 EP 1397553A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- suction
- fibrous web
- machine according
- tad
- 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.)
- Granted
Links
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
- D21F11/14—Making cellulose wadding, filter or blotting paper
- D21F11/145—Making cellulose wadding, filter or blotting paper including a through-drying process
-
- 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
- D21F11/006—Making patterned paper
-
- 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
- D21F11/14—Making cellulose wadding, filter or blotting paper
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S162/00—Paper making and fiber liberation
- Y10S162/903—Paper forming member, e.g. fourdrinier, sheet forming member
Definitions
- the invention relates to a method and a machine for producing a fibrous web, in particular tissue or hygiene web.
- TAD through-air drying
- the web has to be transferred from the forming zone to the TAD zone, the desired dry content in the web transfer depending on the basis weight, for example in a range from about 22 to about 26.5 % may lie.
- the web is then guided, for example, to a wet vacuum which effects wet embossing and then to the TAD drum.
- the stated dry content has only been achieved with a relatively high expenditure of energy.
- the aim of the invention is to provide an improved method and an improved machine of the type mentioned at the outset with which an optimal quality of the end product in question can be achieved with the least possible energy expenditure.
- the energy expenditure required in connection with vacuum generation during the dewatering of the fibrous web is to be reduced.
- this object is achieved by a method for producing a fibrous web, in particular a tissue or hygiene web, in which the fibrous web is formed on a fine-pored, soft covering and this covering is guided over a vacuumed surface, and in which the fibrous web is made directly from a fine-pored, soft covering is transferred to a TAD screen of a TAD drying facility.
- the capillary effect of the covering can be used in particular for the web drainage. This capillary action supports and promotes the negative pressure in question.
- the dry content required for the transfer to the TAD section is therefore achieved with a smaller number of vacuum pumps in the forming zone.
- the transfer of the fibrous web to the TAD screen is preferably carried out after the surface being vacuumed.
- the suction surface is expediently curved. It is preferably formed by a suction guide roller, a vacuumed shoe or the like.
- the fibrous web is dewatered between two coverings, which converge to form a stock inlet gap and are guided over a forming element such as, in particular, a forming roller, the fibrous web following the forming element through the inner covering which comes into contact with it to the surface to be vacuumed to be led.
- a forming element such as, in particular, a forming roller
- the forming element can be formed by a solid forming roller or a suction forming roller.
- the fibrous web is wet-embossed on the TAD screen.
- Wet stamping can be done at and / or after the web transfer point.
- the fine-pored soft covering can be formed in particular by a felt, a capillary felt, a capillary membrane and / or the like.
- a coated sieve for example a sieve with a foamed layer, and for example a felt with a foamed layer can be used as the fine-pored soft covering.
- the foam coating is preferably chosen so that pores in a range from about 3 to about 6 microns result. The corresponding capillary action is therefore used for dewatering.
- the felt is provided with a special foam layer that gives the surface very narrow pores, the diameter of which can be, for example, in the range from about 3 to about 6 ⁇ m.
- the air permeability of this felt is very low.
- the natural capillary action is used to drain the web while it is in contact with the felt.
- At least one suction element arranged within the loop of the TAD screen can be used for wet stamping.
- a pickup or suction element for example, can be provided in the area of the web transfer point within the loop of the TAD screen.
- At least one suction element serving for wet embossing of the fibrous web is provided in the area of the web transfer point and / or after this web transfer point within the loop of the TAD screen.
- a shoe press is provided in the area of the web transfer point, through which the fibrous web is passed together with the fine-pored soft covering and the TAD screen.
- the length of the press nip of the shoe press considered in the web running direction is greater than a value of approximately 80 mm and preferably greater than or equal to approximately 85 mm and in particular greater than or equal to approximately 120 mm, and the shoe press is designed in such a way that the press nip length produces a pressure profile with a maximum press pressure which is less than or equal to a value of approximately 2.5 MPa and in particular less than 2 MPa for a press shoe length greater than or equal to approximately 120 mm.
- This ensures a gentle pressing with low pressing pressure and, due to the length of the shoe, ensures a longer dwell time or pressing time, which improves the embossing effect.
- the shoe press advantageously comprises a shoe press unit, in particular a shoe press roll, and a screen roll which interacts with it and is arranged within the loop of the TAD screen.
- a shoe press unit in particular a shoe press roll
- a screen roll which interacts with it and is arranged within the loop of the TAD screen.
- the fibrous web is used both by means of the shoe press and by means of a seen suction elements is wet stamped. Basically, wet stamping is possible at various points.
- a drainage sieve with zonally different sieve permeability is used as the outer covering which does not come into contact with the forming element.
- the fibrous web is expediently transferred from the TAD screen to a drying cylinder, in particular a Yankee cylinder.
- a shoe press unit in particular a shoe press, encompassing a long shoe and preferably encased in a soft felt or a capillary felt can be provided in the transfer area within the loop of the TAD screen.
- the web transfer in question can also be ensured by a suction press roll, and in particular a press roll that is not vacuumed.
- the machine according to the invention for producing a fibrous web, in particular tissue or hygienic web is correspondingly characterized in that the fibrous web is formed on a fine-pored soft covering and this covering is guided over a vacuumed surface, and that the fibrous web is made directly from a fine-pored soft covering transferred to a TAD screen of a TAD drying facility.
- FIG. 1 is a schematic partial representation of a machine for producing a fibrous web
- Fig. 2 is a schematic partial representation of a modified form of the machine with a shoe press and arranged in the web transfer area
- Fig. 3 is a schematic representation of a further embodiment of the machine, in which the web transfer from the TAD screen to the drying cylinder is supported by a shoe press unit.
- FIG. 1 shows a schematic partial representation of a machine 10 for producing a fibrous web 12, which is in particular a Paper web and can preferably be a tissue or hygiene web.
- the fibrous web 12 is formed on a fine-pored soft covering 14.
- This covering 14 is guided together with the fibrous web 12 formed thereon over a vacuumed surface 16. Subsequently, the fibrous web 12 is transferred from the fine-pored soft covering 14 directly to a TAD screen 18 of a TAD drying device 20.
- the fibrous web 12 is thus transferred from the same fine-pored soft covering 14 directly to the TAD screen 18 on which it was formed.
- the transfer takes place in the web running direction L after the surface 16 that has been vacuumed.
- the suction surface 16 is formed by a suction guide roller 22.
- the fibrous web 12 is dewatered between two fabrics 14, 24, which converge to form a material inlet gap and are guided over a forming element 28, such as, in particular, a forming roller.
- the fibrous web 12 is guided after the forming element 28 through the inner covering 14, which comes into contact with this forming element 28, to the vacuumed surface 16.
- the outer covering 24, which does not come into contact with the forming element 28, can in particular be formed by a preferably water-permeable endless belt.
- the forming element 28 can be formed by a solid forming roll or also by a suction forming roll.
- the fibrous web 12 is wet stamped on the TAD screen 18. Basically, the wet stamping can take place at and / or after the web transfer point I.
- the two coverings 14, 24 have a different running speed in order to produce a creping effect acting on the fibrous web 12.
- the fine-pored soft covering 14 can be formed in particular by a felt, a capillary felt, a capillary membrane and / or the like.
- a felt with a foamed layer can be used as the fine-pored soft covering 14.
- the foam coating can in particular be selected so that pores in a range from approximately 3 to approximately 6 ⁇ m result.
- At least one suction element arranged within the loop of the TAD screen 18 can be provided for wet stamping.
- a suction element 30 is used, which is provided here, for example, after the web transfer point I.
- a pickup or suction element 32 is provided in the area of the web transfer point I within the loop of the TAD screen 18.
- the fibrous suspension is introduced via a headbox 34 into the stock inlet gap 26 formed between the two coverings 14, 24.
- the covering 14 is transferred after the transfer of the fibrous web 12 to the TAD screen 18 by means of a so-called Uhle-Box 36, i.e. of a pipe suction device, conditioned.
- the fibrous web 12 is guided together with the TAD screen 18 over a TAD drum 38, which, as can be seen from FIG. 1, is assigned a drying hood 40.
- FIG. 2 shows a modified form of the machine 10 in a schematic partial illustration.
- a shoe press 42 is provided in the area of the web transfer point I, through which the fibrous web 12 is passed together with the fine-pored soft covering 14 and the TAD screen 18.
- the length of the press nip 44 of the shoe press 42 viewed in the web running direction L can expediently be selected to be greater than a value of approximately 80 mm and preferably greater than or equal to approximately 85 mm and in particular greater than or equal to approximately 120 mm, and the shoe press can in particular be designed so that there is a pressure profile with a maximum pressure that is less than or equal to a value of about 2.5 MPa and in particular less than 2 MPa for a press shoe length greater than or equal to about 120 mm over the length of the press nip. In this way, a gentle pressing with low pressing pressure is ensured and, due to the corresponding shoe length, a longer dwell and pressing time is ensured, which improves the embossing effect.
- suction element 30 (cf. also FIG. 1) which also serves for wet stamping can also be provided behind this web transfer point I, but this is not mandatory in the present case.
- wet embossing can take place in the area of the level crossing point I or behind this level crossing point I, or such a wet embossing can take place both in the area of the level crossing point I and behind this level crossing point I.
- the shoe press 42 comprises a shoe press unit 46, in particular a shoe press roller, and, in the present exemplary embodiment, a suction roller or suction pressure roller 48 which interacts with it and is arranged within the loop of the TAD screen 18.
- the two coverings 14, 18 have the same running speed, i.e. wet creping does not take place here.
- FIG. 3 shows a schematic view of a complete view of the machine 10, the forming zone and TAD zone of which are at least essentially designed as shown in FIG. 1, all modifications being conceivable here as well.
- these forming zones, including all the modifications mentioned, can in particular also be designed as described in connection with the embodiment according to FIG. 2.
- Corresponding elements are assigned the same reference symbols.
- the outer covering 24, which does not come into contact with the forming element 28, can be formed by a dewatering sieve with zonally different sieve permeability, which in particular has the advantage of a higher water absorption rate of the fibrous web 12.
- the fibrous web 12 is transferred from the TAD screen 18 to a drying cylinder 50, in particular a Yankee cylinder, after the TAD drying.
- a shoe press unit 54 preferably encased in a soft felt or a capillary felt 52, is provided, which can preferably again be a shoe press roll.
- SPW suction press roll
- a hot air hood 56 is assigned to the drying cylinder 50.
- the web 12 is finally wound up into a winding roll 58.
- Machine fibrous web, fine-pored, soft covering, suction surface, suction guide roller TAD screen, TAD drying device, suction guide roller, outer covering, material inlet gap, forming element, suction element, pick-up or suction element, headbox, Uhle box (pipe suction device), TAD drum, drying hood, shoe press, press nip, shoe press unit, suction roller, suction cylinder, suction cylinder, suction cylinder, suction cylinder Capillary felt Shoe press unit Hot air hood Winding roll Web direction I web transfer overlap
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10130038A DE10130038A1 (en) | 2001-06-21 | 2001-06-21 | Method and machine for producing a fibrous web |
DE10130038 | 2001-06-21 | ||
PCT/EP2002/005807 WO2003000989A1 (en) | 2001-06-21 | 2002-05-27 | Method and machine for the production of a fibre web |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1397553A1 true EP1397553A1 (en) | 2004-03-17 |
EP1397553B1 EP1397553B1 (en) | 2007-01-03 |
Family
ID=7689016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02780825A Expired - Lifetime EP1397553B1 (en) | 2001-06-21 | 2002-05-27 | Method and machine for the production of a fibre web |
Country Status (6)
Country | Link |
---|---|
US (1) | US6986830B2 (en) |
EP (1) | EP1397553B1 (en) |
AT (1) | ATE350534T1 (en) |
CA (1) | CA2451503C (en) |
DE (2) | DE10130038A1 (en) |
WO (1) | WO2003000989A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE352666T1 (en) * | 2000-05-18 | 2007-02-15 | Metso Paper Karlstad Ab | SOFT CREPE PAPER MACHINE AND PRESS SECTION THEREOF |
DE10129613A1 (en) * | 2001-06-20 | 2003-01-02 | Voith Paper Patent Gmbh | Method and device for producing a fibrous web provided with a three-dimensional surface structure |
DE10130038A1 (en) * | 2001-06-21 | 2003-01-02 | Voith Paper Patent Gmbh | Method and machine for producing a fibrous web |
US8243633B2 (en) | 2004-03-16 | 2012-08-14 | Nokia Corporation | Enhanced uplink dedicated channel—application protocol over lub/lur |
US20080113575A1 (en) * | 2006-11-09 | 2008-05-15 | Davis Michael C | Solvent stripping process |
US20080142737A1 (en) * | 2006-12-18 | 2008-06-19 | Joseph Brian Hovanec | Microwave solvent stripping process |
US7592415B2 (en) * | 2006-12-18 | 2009-09-22 | E. I. Du Pont De Nemours And Company | Infrared solvent stripping process |
DE102006062237A1 (en) * | 2006-12-22 | 2008-06-26 | Voith Patent Gmbh | Machine for producing a fibrous web |
US8608998B2 (en) * | 2008-07-09 | 2013-12-17 | E I Du Pont De Nemours And Company | Infrared solvent stripping process |
AT508331B1 (en) | 2009-05-19 | 2011-05-15 | Andritz Ag Maschf | METHOD AND DEVICE FOR TREATING A FIBROUS CAR TRACK IN A LANGNIP PRESS UNIT |
AT517330B1 (en) * | 2015-10-06 | 2017-01-15 | Andritz Ag Maschf | METHOD FOR PRODUCING A FIBROUS WEB |
CA3014325A1 (en) | 2016-02-11 | 2017-08-17 | Structured I, Llc | Belt or fabric including polymeric layer for papermaking machine |
DE102018114748A1 (en) | 2018-06-20 | 2019-12-24 | Voith Patent Gmbh | Laminated paper machine clothing |
DE102020105480A1 (en) * | 2020-03-02 | 2021-04-01 | Voith Patent Gmbh | Seam for a perforated plastic film |
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US3812000A (en) * | 1971-06-24 | 1974-05-21 | Scott Paper Co | Soft,absorbent,fibrous,sheet material formed by avoiding mechanical compression of the elastomer containing fiber furnished until the sheet is at least 80%dry |
US3821068A (en) * | 1972-10-17 | 1974-06-28 | Scott Paper Co | Soft,absorbent,fibrous,sheet material formed by avoiding mechanical compression of the fiber furnish until the sheet is at least 80% dry |
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CN1070964C (en) * | 1993-12-20 | 2001-09-12 | 普罗克特和甘保尔公司 | Wet pressed paper web and method of making same |
WO1997001671A1 (en) * | 1995-06-28 | 1997-01-16 | The Procter & Gamble Company | Creped tissue paper exhibiting unique combination of physical attributes |
SE504645C2 (en) * | 1995-07-12 | 1997-03-24 | Valmet Karlstad Ab | Paper machine for making tissue paper |
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CA2234305A1 (en) * | 1997-04-03 | 1998-10-03 | Fort James Corporation | High-intensity through-air-drying for conversion of conventional wet-press paper machines |
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US6790315B2 (en) * | 1999-06-17 | 2004-09-14 | Metso Paper Karlstad Ab | Drying section and method for drying a paper web |
SE516663C2 (en) * | 1999-06-17 | 2002-02-12 | Metso Paper Karlstad Ab | Drying portion of a machine for making a continuous tissue paper web and method of drying a continuous tissue. |
WO2001000925A1 (en) * | 1999-06-29 | 2001-01-04 | Valmet-Karlstad Ab | Apparatus and method for making textured tissue paper |
DE10003686A1 (en) * | 2000-01-28 | 2001-08-23 | Voith Paper Patent Gmbh | Machine and method for producing a tissue web |
DE10032251A1 (en) * | 2000-07-03 | 2002-01-17 | Voith Paper Patent Gmbh | Water extraction station for a web of tissue/toilet paper has a shoe press unit at the drying cylinder with an extended press gap and a suction unit within an overpressure hood at the carrier belt |
DE10129613A1 (en) * | 2001-06-20 | 2003-01-02 | Voith Paper Patent Gmbh | Method and device for producing a fibrous web provided with a three-dimensional surface structure |
DE10130038A1 (en) * | 2001-06-21 | 2003-01-02 | Voith Paper Patent Gmbh | Method and machine for producing a fibrous web |
US6551461B2 (en) * | 2001-07-30 | 2003-04-22 | Kimberly-Clark Worldwide, Inc. | Process for making throughdried tissue using exhaust gas recovery |
DE10157451A1 (en) * | 2001-11-23 | 2003-06-05 | Voith Paper Patent Gmbh | Method and device for producing a fibrous web |
US6758943B2 (en) * | 2001-12-27 | 2004-07-06 | Kimberly-Clark Worldwide, Inc. | Method of making a high utility tissue |
US7150110B2 (en) * | 2002-01-24 | 2006-12-19 | Voith Paper Patent Gmbh | Method and an apparatus for manufacturing a fiber web provided with a three-dimensional surface structure |
US6727004B2 (en) * | 2002-07-24 | 2004-04-27 | Kimberly-Clark Worldwide, Inc. | Multi-ply paper sheet with high absorbent capacity and rate |
-
2001
- 2001-06-21 DE DE10130038A patent/DE10130038A1/en not_active Withdrawn
-
2002
- 2002-05-27 CA CA2451503A patent/CA2451503C/en not_active Expired - Fee Related
- 2002-05-27 DE DE50209174T patent/DE50209174D1/en not_active Expired - Lifetime
- 2002-05-27 AT AT02780825T patent/ATE350534T1/en active
- 2002-05-27 EP EP02780825A patent/EP1397553B1/en not_active Expired - Lifetime
- 2002-05-27 WO PCT/EP2002/005807 patent/WO2003000989A1/en active IP Right Grant
-
2003
- 2003-12-19 US US10/742,401 patent/US6986830B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03000989A1 * |
Also Published As
Publication number | Publication date |
---|---|
CA2451503C (en) | 2010-04-06 |
DE50209174D1 (en) | 2007-02-15 |
WO2003000989A1 (en) | 2003-01-03 |
DE10130038A1 (en) | 2003-01-02 |
US6986830B2 (en) | 2006-01-17 |
ATE350534T1 (en) | 2007-01-15 |
CA2451503A1 (en) | 2003-01-03 |
US20040244933A1 (en) | 2004-12-09 |
EP1397553B1 (en) | 2007-01-03 |
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