EP1711657A1 - Method and system for producing a wood-free coated, matte or semi-matte paper web - Google Patents
Method and system for producing a wood-free coated, matte or semi-matte paper webInfo
- Publication number
- EP1711657A1 EP1711657A1 EP04804965A EP04804965A EP1711657A1 EP 1711657 A1 EP1711657 A1 EP 1711657A1 EP 04804965 A EP04804965 A EP 04804965A EP 04804965 A EP04804965 A EP 04804965A EP 1711657 A1 EP1711657 A1 EP 1711657A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- paper web
- arrangement
- calendering
- applying liquid
- matt
- 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
-
- 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
- D21F5/18—Drying webs by hot air
-
- 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
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/30—Pretreatment of the paper
-
- 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
- D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
- D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
-
- 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
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
- D21H23/48—Curtain coaters
Definitions
- the invention relates to a method and an arrangement for producing a wood-free coated, matt or semi-matt paper web.
- WFC papers wood-free coated
- WFC papers wood-free coated
- this object is achieved in that the paper web is pre-calendered by means of at least one device for pre-calendering, then by means of at least one device for applying liquid or pasty application medium is coated at least on one side and then dried by means of at least one device for drying, in order thereby to produce a wood-free coated, matt or semi-matt paper web with a roughness in the range from 0.8 to 3.9 ⁇ m [PPS] and a gloss in the range from To produce 3 to 35% [TAPPI 75 °].
- This combination according to the invention permits the advance into new quality ranges for WFC types, in particular for matt and semi-matt WFC types.
- the coated paper can be produced in a way that conserves volume and the required calendering work can be significantly reduced.
- the roughness of the paper web after pre-calendering is ⁇ 6 ⁇ m, in particular ⁇ 5 ⁇ m, in particular in the case of single-coated paper webs, that is to say in the case of non-pre-coated paper webs, ⁇ 1.4 times the final roughness of the finished paper web. This creates the possibility of producing a paper web with a very low roughness with a low gloss.
- pre-calendering immediately before the last job it is necessary to produce the desired smoothness here so that the desired finish is achieved after the subsequent job, in particular by means of contactless curtain coating.
- the pre-calendering is also very advantageous for the application, in particular by means of contactless curtain coating, since this means that the requirements for the Viscoelasticity of the application medium can be reduced and a good application quality is ensured.
- the overall process for the production of wood-free coated, matt or semi-matt paper webs is simplified, since the previous finishing satin is eliminated and the overall process can preferably be designed as an online process.
- the paper web is coated before it is pre-calibrated by means of at least one device for applying liquid or pasty application medium.
- the deletion is preferably carried out on a first side simply by means of a film or curtain application device, on both sides simply by means of a film application device or on both sides simply by means of a curtain application device.
- the compositions of the coating colors, the respective coat weights and the like can vary.
- the paper web is dried in a known manner.
- the paper web is passed through at least one film press before the first application of liquid or pasty application medium. This ensures a possible first thickness calibration of the paper web in an effective and simple manner.
- the paper web is pre-calendered by means of a smoothing unit, by means of a shoe calender having at least one wide nip and a smoothing unit, by means of a soft calender having at least one nip or by means of a supercalender having at least one nip.
- These precalibration devices are outstandingly suitable for this and are distinguished by the process reliability at low operating costs that is necessary for the manufacturing process according to the invention.
- the paper web is then simply coated on a first side by means of a device for applying liquid or pasty application medium, in particular a curtain application device. Additionally or alternatively, the paper web is also simply or simply coated on a second side by means of a further device for applying liquid or pasty application medium, in particular a curtain application device.
- the composition of the at least one coating color, the coat weight and the like can vary.
- the paper web is dried for the first time or again in a known manner.
- the paper web is passed through at least one film press before it is pre-calendered, provided that the paper web is simply simply coated. This ensures a possible first thickness calibration of the paper web in an effective and simple manner.
- the object of the invention is achieved with an arrangement according to the invention in that it has at least one device for pre-calendering the paper web, at least one device for applying liquid or pasty application medium to the paper web and at least one device for drying the paper web in the running direction of the paper web.
- the device for pre-calendering the paper web is preceded by at least one further device for applying liquid or pasty application medium to the paper web and another device for drying the paper web in the running direction of the paper web.
- the device for pre-calendering the paper web preferably comprises at least one smoothing unit, a soft calender having at least one nip, a super calender having at least one nip or a shoe calender having at least one wide nip.
- the smoothing unit can have two hard cast rollers, the soft calender a hard cast roller and a roller provided with a plastic cover, and the super calender a hard cast roller and a paper roller, the roller pairs mentioned forming a nip with one another.
- the device for applying liquid or pasty application medium is a contactless device or a device contacting the paper web.
- the contactless device can have a curtain coating device or a spray coating device and the device contacting the paper web can have a coating device (JetFlow) or a film coating device.
- the device for drying the paper web has an impingement flow dryer and / or an IR drying unit. These drying devices are outstandingly suitable for this and are distinguished by the process reliability required for the manufacturing process according to the invention with low operating costs.
- At least one film press can be arranged upstream of the device for pre-calendering the paper web or the device for applying liquid or pasty application medium to the paper web in the running direction of the paper web. This ensures a possible first thickness calibration of the paper web in an effective and simple manner.
- the arrangement according to the invention it is also possible for the arrangement according to the invention to form a unit with a paper machine. This means that the wood-free coated, matt or semi-matt paper web can be produced online and process steps previously required, such as winding and unwinding the paper web in the manufacturing process, are no longer required.
- Figure 1 is a schematic representation of an arrangement according to the invention
- Figures 2a and 2b further schematic representations of two arrangements according to the invention
- FIG. 3 another schematic representation of an arrangement according to the invention.
- Figure 4 an inventive roughness-gloss diagram.
- FIG. 1 shows a schematic representation of an arrangement 10 according to the invention for producing a wood-free coated, matt or semi-matt paper web 1.
- the paper machine 5 for producing the paper web 1 comprises, in a known manner, the sections headbox, wire section, press section, dryer section and winding machine, which are not explicitly shown.
- the general structure of a paper machine and its sections is described in a large number of publications and is well known to the person skilled in the art.
- the arrangement 10 has in the running direction L (arrow) of the paper web 1 at least one device 11 for pre-calendering the paper web 1, at least one device 12 for applying liquid or pasty application medium to the paper web 1 and at least one device 13 for drying the paper web 1.
- the device 11 for pre-calendering the paper web 1 comprises at least one smoothing unit, a soft calender having at least one nip, a super calender having at least one nip or a shoe calender having at least one wide nip.
- the smoothing unit can have two hard cast rollers, the soft calender a hard cast roller and a roller provided with a plastic cover, and the super calender a hard cast roller and a paper roller, the roller pairs mentioned forming a nip with one another.
- a soft calender with several rollers is known, for example, from European patent EP 0 732 446 B.
- the device 12 for applying liquid or pasty application medium is a contactless device or a device contacting the paper web 1.
- the contactless device can have a curtain coating device or a spray coating device and the device contacting the paper web can have a coating device (JetFlow) or a film coating device.
- a curtain application process including application device is, for example, from the German published application DE 100 12 344 A1 and the VOITH publication "The DF Coater - a coating technology of the new generation", twogether special edition “Systems for Finishing", Hirofumi Morita, p3326 d 03.03, known.
- the device 13 for drying the paper web 1 has an impingement flow dryer and / or an IR drying unit. However, other drying systems and principles can of course also be used.
- the devices 11, 12 and 13 are shown in bold outline in the schematic illustration in order to express their importance.
- This arrangement 10 thus enables the method according to the invention to be carried out.
- the paper web 1 is pre-calendered by means of at least one device 11 for pre-calendering, then coated on at least one side by means of at least one device 12 for applying liquid or pasty application medium and then dried by means of at least one device 13 for drying, in order to do so to produce a wood-free coated, matt or semi-matt paper web 1 with a roughness in the range from 0.8 to 3.9 ⁇ m [PPS] and a gloss in the range from 3 to 35% [TAPPI 75 °].
- FIG. 1 It can be clearly seen in FIG. 1 that the devices 11, 12 and 13 form part of the arrangement 10 with the paper machine 5.
- the method steps according to the invention thus take place online in the production of the wood-free coated, matt or semi-matt paper web 1.
- FIGS. 2a and 2b show further schematic representations of two configurations according to the invention.
- the device 11 for pre-calendering the paper web 1 is preceded by at least one further device 14 for applying liquid or pasty application medium to the paper web 1 and another device 15 for drying the paper web 1 in the running direction L (arrow) of the paper web 1.
- the further device 14 for applying liquid or pasty application medium to the paper web 1 is again a contactless device or a device contacting the paper web 1 (cf. FIG. 1). It is preferably designed as a film or curtain application device and simply coats the paper web 1 on a first side S1 or simply on both sides S2.
- the one-sided deletion of the paper web 1 can take place on the upper or lower side and the two-sided deletion of the paper web 1 can take place simultaneously (cf. FIG. 2a), overlapping in time or offset in time (cf. FIG. 2b).
- the further device 15 for drying the paper web 1 has an impingement flow dryer and / or an IR drying unit (cf. FIG. 1).
- an impingement flow dryer and / or an IR drying unit cf. FIG. 1.
- other drying systems and principles can of course also be used.
- the further device 14 for applying liquid or pasty application medium to the paper web 1 is preceded in the running direction L (arrow) of the paper web 1 by at least one film press 16 of known design and mode of operation (double-dashed representation) for possible first thickness calibration of the still uncoated paper web 1. Between the film press 16 and the device 14 it is of course also possible to arrange further units and devices of known type (dashed line) serving the manufacturing process of the wood-free coated, matt or semi-matt paper web 1.
- FIG. 3 shows a further schematic illustration of an embodiment according to the invention.
- This arrangement 10 is fundamentally similar to the arrangement 10 in FIG. 1, reference being made to it.
- the device 11 for applying liquid or pasty application medium to the paper web 1 in the running direction L (arrow) of the paper at least one film press 17 (double-coated representation) of known design and mode of operation for possible first thickness calibration of the still uncoated paper web 1.
- film press 17 double-coated representation
- further units and devices of known type serving for the production process of the wood-free coated, matt or semi-matt paper web 1 can be arranged.
- FIG. 4 shows a roughness-gloss diagram according to the invention.
- the method according to the invention allows small gloss values to be set with low roughness. This is because the roughness is determined by the pre-calendering and is no longer worsened in combination with the contactless coating. A contour stroke is applied for contactless painting.
- the advantage here is that the coating medium is not pressed into the paper web during spreading, which would lead to a certain moistening of the paper web and thus to an increase in the roughness of the paper web.
- the gloss of the paper web is now set independently of the calendering work by the parameters of the application medium. These parameters are, for example, the consistency, the recipe, the particle size and shape of the pigments and the like.
- the pre-calendering creates much better conditions for the contactless application process. Among other things, this leads to better ones Deletion results due to lower requirements for the viscoelasticity of the application medium.
- a wood-free coated, matt or semi-matt paper web can thus be produced in new quality ranges.
- the new quality ranges lie within a triangular, preferably elliptical contour, which extends in the roughness range from 0.8 to 3.9 ⁇ m [PPS] and in the gloss range from 3 to 35% [TAPPI 75 °] and is fully dashed or dashed in FIG is shown fully lined.
- FIG. 4 also shows the quality ranges of wood-free coated paper webs which were produced in accordance with the previously known production processes. These are also within a preferably elliptical contour, which, however, has less favorable quality values and is shown in dashed lines.
- the invention creates a method and an arrangement for producing a wood-free coated, matt or semi-matt paper web, which allow the production of paper webs in new quality ranges, in particular for matt and semi-matt WFC types.
Landscapes
- Paper (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004003921A DE102004003921A1 (en) | 2004-01-27 | 2004-01-27 | Method and arrangement for producing a wood-free coated, matt or semi-matt paper web |
PCT/EP2004/053630 WO2005071158A1 (en) | 2004-01-27 | 2004-12-21 | Method and system for producing a wood-free coated, matte or semi-matte paper web |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1711657A1 true EP1711657A1 (en) | 2006-10-18 |
EP1711657B1 EP1711657B1 (en) | 2010-06-09 |
Family
ID=34801034
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04804965A Revoked EP1711657B1 (en) | 2004-01-27 | 2004-12-21 | Method for producing a wood-free coated, matte or semi-matte paper web |
Country Status (6)
Country | Link |
---|---|
US (2) | US20070166462A1 (en) |
EP (1) | EP1711657B1 (en) |
AT (1) | ATE470754T1 (en) |
BR (1) | BRPI0418055A (en) |
DE (2) | DE102004003921A1 (en) |
WO (1) | WO2005071158A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007029328A1 (en) | 2007-06-22 | 2008-12-24 | Voith Patent Gmbh | Method and device for producing an at least substantially wood-free coated paper web |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6126787A (en) * | 1995-02-01 | 2000-10-03 | Valmet Corporation | Dry end of a paper machine |
DE29504034U1 (en) * | 1995-03-09 | 1995-05-04 | Voith Sulzer Finishing GmbH, 47803 Krefeld | Calender for the two-sided treatment of a paper web |
US5591489A (en) * | 1995-05-04 | 1997-01-07 | Sequa Chemicals, Inc. | Process for surface sizing paper or paperboard |
FI115649B (en) * | 1998-06-10 | 2005-06-15 | Metso Paper Inc | Method of making paper and paper machine |
FI113791B (en) * | 1998-06-22 | 2004-06-15 | Metso Paper Inc | Method and apparatus for surface treatment of a web |
EP1016546B1 (en) * | 1998-12-28 | 2004-05-19 | Nippon Paper Industries Co., Ltd. | Ink-jet recording paper containing silica layers and method for its' manufacture |
FI111476B (en) * | 1999-03-12 | 2003-07-31 | Metso Paper Inc | Method and apparatus for making coated paper and coated paper |
FI991108A (en) * | 1999-05-14 | 2000-11-15 | Valmet Corp | Method and apparatus for the manufacture of calendered paper or calendered paperboard |
FI106966B (en) * | 2000-02-24 | 2001-05-15 | Metso Paper Inc | System for keeping calender rolls of a papermaking machine clean |
DE10012344A1 (en) * | 2000-03-14 | 2001-09-20 | Voith Paper Patent Gmbh | Continuous liquid curtain coating, for paper or card operates under specified conditions of temperature, pressure and viscosity, leaving thin wet film on surface |
US6547929B2 (en) * | 2000-04-12 | 2003-04-15 | Rohm And Haas Company | Paper having improved print quality and method of making the same |
FI115405B (en) * | 2000-06-20 | 2005-04-29 | Metso Paper Inc | Calendering method especially for pre-calendering and paper processing line |
FI118811B (en) * | 2000-11-06 | 2008-03-31 | Metso Paper Inc | Blow drying section and drying group |
AU2002214076A1 (en) * | 2000-11-09 | 2002-05-21 | Metso Paper Inc. | A method and a paper machine line for the manufacture of coated fine paper |
US6551455B2 (en) * | 2001-02-27 | 2003-04-22 | The Mead Corporation | Multi-layer printable wear resistant papers including particle rich interior layer |
FI20011291A (en) * | 2001-06-18 | 2002-12-19 | Metso Paper Inc | Process and paper machine for making coated paper |
FI110957B (en) * | 2001-12-10 | 2003-04-30 | Metso Paper Inc | Method and apparatus for forming a multilayer coating |
FI20020159A (en) * | 2002-01-29 | 2003-07-30 | Metso Paper Inc | Surface shaping apparatus and method using the apparatus for finishing coated or uncoated fibrous web |
DE10255422B4 (en) * | 2002-11-28 | 2004-10-28 | Voith Paper Patent Gmbh | Method and device for treating a paper or cardboard web |
US7625607B1 (en) * | 2003-07-22 | 2009-12-01 | Newpage Wisconsin System Inc. | Low glare, high print gloss printing paper |
EP1700952B1 (en) * | 2003-12-26 | 2013-07-17 | Nippon Paper Industries Co., Ltd. | Coated paper adapted to newsprint printing ink and process for producing the same |
US7504002B2 (en) * | 2006-01-20 | 2009-03-17 | Newpage Corporation | Method of producing coated paper with reduced gloss mottle |
-
2004
- 2004-01-27 DE DE102004003921A patent/DE102004003921A1/en not_active Withdrawn
- 2004-12-21 WO PCT/EP2004/053630 patent/WO2005071158A1/en active Application Filing
- 2004-12-21 DE DE502004011273T patent/DE502004011273D1/en active Active
- 2004-12-21 BR BRPI0418055-0A patent/BRPI0418055A/en not_active Application Discontinuation
- 2004-12-21 US US10/587,617 patent/US20070166462A1/en not_active Abandoned
- 2004-12-21 AT AT04804965T patent/ATE470754T1/en active
- 2004-12-21 EP EP04804965A patent/EP1711657B1/en not_active Revoked
-
2009
- 2009-09-17 US US12/561,723 patent/US20100006251A1/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO2005071158A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102004003921A1 (en) | 2005-11-24 |
US20070166462A1 (en) | 2007-07-19 |
EP1711657B1 (en) | 2010-06-09 |
DE502004011273D1 (en) | 2010-07-22 |
BRPI0418055A (en) | 2007-04-17 |
ATE470754T1 (en) | 2010-06-15 |
WO2005071158A1 (en) | 2005-08-04 |
US20100006251A1 (en) | 2010-01-14 |
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