WO2012007212A1 - Procédé et machine pour fabriquer une bande de matière fibreuse - Google Patents

Procédé et machine pour fabriquer une bande de matière fibreuse Download PDF

Info

Publication number
WO2012007212A1
WO2012007212A1 PCT/EP2011/058251 EP2011058251W WO2012007212A1 WO 2012007212 A1 WO2012007212 A1 WO 2012007212A1 EP 2011058251 W EP2011058251 W EP 2011058251W WO 2012007212 A1 WO2012007212 A1 WO 2012007212A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibrous web
pressure
smoothing
press
machine
Prior art date
Application number
PCT/EP2011/058251
Other languages
German (de)
English (en)
Inventor
Stephan Hampe
Guido Klaunzer
Original Assignee
Voith Patent Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Voith Patent Gmbh filed Critical Voith Patent Gmbh
Publication of WO2012007212A1 publication Critical patent/WO2012007212A1/fr

Links

Classifications

    • 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
    • D21F9/006—Complete machines for making continuous webs of paper of the twin-wire type paper or board consisting of two or more layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0281—Wet presses in combination with a dryer roll
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/04—Arrangements thereof
    • 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
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/08—Rearranging applied substances, e.g. metering, smoothing; Removing excess material
    • D21H25/12—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod
    • D21H25/14—Rearranging applied substances, e.g. metering, smoothing; Removing excess material with an essentially cylindrical body, e.g. roll or rod the body being a casting drum, a heated roll or a calender
    • 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
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating

Definitions

  • the invention relates to a method for producing a fibrous web, in particular paper, board or tissue web, with a first layer and at least a second layer, in which the fibrous web n in a press arrangement between two endlessly circulating, fluid-absorbable coverings, in particular Dewatering belts is passed through a single press nip and passes after passing through the press assembly to a Troc ken strec ke in La ufrichtu ng for the fibrous web forming drying device and is guided by this.
  • the invention further relates to a machine for producing a fibrous web, in particular paper, board or tissue web, with a first layer and at least one second layer comprising a pressing arrangement having only a single press nip and at least one of the press arrangement in the running direction of the fibrous web n nachgeord nete, at least one drying section descriptive drying device.
  • Press assemblies with only a single press nip are also referred to as single press press assemblies.
  • the fibrous web is always guided supported on at least one endless circulating, fluid-absorbable drainage tape, so that the leadership is free from a free train.
  • the transfer to a downstream functional unit is carried out in a so-called transfer area and in execution of this as a drying device usually free of a free train.
  • EP 1 072 721 A2 discloses an embodiment of a machine for producing and / or refining a fibrous web with a Such Einspaltpressenan Aunt, which is arranged downstream of a drying device for drying the fibrous web, wherein the fibrous web is dried by means of contact drying by guiding over heated drying cylinders.
  • Embodiments with integrated impingement drying for example, guidance via flow-through drying devices in the form of air-flow drying devices, are described in the publications DE 10 2004 056 320 A1 and DE 1 0 2004 039 785 A1.
  • EP 1 647 628 A1 in which an offset press for smoothing the fibrous web is provided between the drying device and the press arrangement.
  • the advantage of such arrangements is a relatively simple construction and a short construction.
  • the inner or internal strength of the fibrous web in the Z direction, ie height direction which is characterized as a split strength by the so-called Scott Bond value, compared to other press concepts depending on the composition and type of paper n or more or less.
  • the internal strength described here according to TAPPI T 569 the strength of the fibrous web in the thickness or Z-direction and characterizes the size of the maximum load that can withstand the fibrous web over a perpendicular to the surface of this applied force.
  • This internal Festig speed of the fibrous web is in view of the required properties of the fibrous web in the desired further processing and / or further treatment in some cases of considerable importance.
  • the invention is therefore based on the object, a method and a machine for producing a fibrous web with a Einspaltpressenan angel further develop such that the disadvantages mentioned are avoided and the Strength of the fibrous web, in particular the internal strength of the fibrous web increases, and the surface quality of the fibrous web is improved at high specific volume.
  • the solution according to the invention is intended thereby to have a low constructive and production-technical expenditure, and furthermore to not significantly impair the required overall length of the machine.
  • a treatment area characterizing portion is applied to the pressure on the fibrous web in the remaining area of the drying section increased pressure and that in man fürlaufrichtu ng the fibrous web the psychologistsbere I at least one smoothing area is arranged downstream by a smoothing pressure is applied to the fibrous web, while the fibrous web is smoothed at least on one side.
  • the invention is particularly advantageous for the production of the liner types White Top Kraftliner (abbreviated: WTKL) and White Top Testliner (abbreviated: WTTL), applicable, which in each case a first layer, the blanket layer (blanket), and at least one second layer, the supine position (back).
  • WTKL White Top Kraftliner
  • WTTL White Top Testliner
  • These varieties may consist of further layers which are arranged between the first and the second layer.
  • Such additional layers are referred to as a protective layer and insert.
  • the first and the second layer of these fibrous webs thus form the outer layers.
  • the quality characteristics SCT CD index are according to the measuring method according to DIN 54518, the Burst index according to the measuring method according to DIN EN ISO 2759, the RCT CD index according to the measuring method according to DIN 53134, 1990-02 and Roughness Bendtsen according to the measurement method according to ISO 5627 of particular importance.
  • White Top Kraftliner is used as wrapping paper whose basis weight is in the range of 100 to 300 g / m 2 . .With this use, high strengths and good surface properties are required.
  • Kraftliner is usually, as already mentioned, made of the two layers of blanket and back.
  • the blanket consists of 100% high quality bleached short and long fiber pulps, for example, 60% long fiber and 40% short fiber pulps.
  • the back is made of 100% high-quality, unbleached kraft pulp, for example, in Asia, the back of waste paper fibers Classes 1 .02, 1 .04, 4.03 and the protective layer of recycled paper Class 1 .1 1 with shares of 2.05, respectively European standard EN643.
  • the process according to the invention enables the production of high-quality white top kraftliner varieties.
  • the following property values can be achieved:
  • Burst index according to measurement method DIN EN ISO 2759 up to 4.9 kPam 2 / g, in particular up to 3 kPam 2 / g
  • White Top Testliner is also used as wrapping paper whose basis weight is in the range of 100 to 300 g / m 2 . This grade also requires high strengths and good surface properties. Testliner is usually made, as already mentioned, from the two layers of blanket and back.
  • the blanket may consist of 100% high quality bleached short and long fiber pulps, for example of 60% long fiber and 40% short fiber pulps or, as required, of waste paper such as 80% 3.18 and 20% 3.16 or 40% 2.05 and 40% 2.06 and 20% 3.10.
  • the back is 100% recycled paper fibers.
  • Possible exemplary waste paper grade compositions are 25% 1 .02 and 25% 1 .04 and 50% 4.03, or 100% 4.04, or 20% 1 .02 and 80% 4.03, or 50% 1 .02 and 50% 1 .04.
  • the protective layer or interlayer if the WTTL is made from more than two layers, for example made of 100% waste paper fibers of Class 1 .1 1 and optionally with admixtures of waste paper grade 2.05 according to the European standard EN643.
  • the inventive method enables the production of high quality white top testliner varieties.
  • the following property values can be achieved:
  • Burst index according to measurement method DIN EN ISO 2759 up to 2.6 kPam 2 / g, in particular up to 2.2 kPam 2 / g
  • the pulp suspension from which the testliner is made includes, due to economic considerations, costly raw materials. However, these impair the quality of the fibrous web produced.
  • the solution according to the invention makes it possible to produce a fibrous web with good quality and cost-effective use of raw materials.
  • the process according to the invention makes it possible to produce fibrous webs of white top testliner and white top kraftliner with a high, specific volume. This makes it possible to reduce the amount of high-quality pulps used and thus save costs.
  • the specified quality parameters can be achieved individually and also the values of several parameters in combination, for example, by dewatering the fibrous web correspondingly between the press arrangement and the device defining a treatment area arranged within the drying section. is split. Accordingly, the positive influence on the roughness of the fibrous web, for example, by the targeted division of the smoothing work between arranged within the drying section, a treatment area descriptive device and the downstream smoothing device, can be effected.
  • the production process of the fibrous web is modified such that after the single-gap press arrangement in the downstream drying device, a first process step is added, which increases the strength and in particular the internal strength of the fibrous web. It has been found that by applying pressure over a portion of the entire drying section, that is, a longer distance in the direction of passage of the fibrous web considered on this, the strength of the fibrous web considerably can be increased.
  • This first process step is preferably arranged in the dry content range of the fibrous web between 50% and 85%, preferably between 55% and 85%. The introduction of the pressure can be done in a relatively simple manner and integrated into the already provided guidance of the fibrous web.
  • a treatment region is understood to be the region in which apart from the drying parameters usually provided in a drying device, further parameters influencing the properties of the fibrous web act on the fibrous web.
  • a second process step was inserted after the treatment section with a smoothing area.
  • a second process step was inserted after the treatment section with a smoothing area.
  • the smoothing area can be arranged within the drying section or subsequently to the drying section.
  • the effective pressure in the treatment area on the fibrous web is preferably set in a range of 0.04 MPa to 0.5 MPa, preferably 0.05 MPa to 0.5 MPa, particularly preferably 0.2 MPa to 0.3 MPa. These heights of the pressures allow a corresponding increase in the strength of the fibrous web in the Z direction, in particular at least in the range of 20% to 80%.
  • the duration of action on the fibrous web can be influenced as a function of the machine speed.
  • the gap geometry formed in the treatment area influences the surface topography of the fibrous web accordingly.
  • the treatment area can preferably be continuous or interrupted in the fibrous web passage direction.
  • the first possibility offers the advantage of the formation of continuous pressure profiles over the extent of the treatment area in the direction of passage of the fibrous web, and thus a gradual increase in strength.
  • a plurality of individual partial treatment areas are provided, which are connected in series one after the other.
  • the pressure in the treatment area and / or in the smoothing area in the direction of passage of the fibrous web and / or transversely to the passage direction can be set variably.
  • This possibility offers the advantage of locally specifically adjustable, in particular adjustable, increases in strength and surface properties. Due to the adjustability of the smoothing pressure in the smoothing area transverse to the machine direction a profiling to achieve a desired smoothness transverse profile is possible.
  • the pressure and / or the smoothing pressure or the pressure profile or the smoothing pressure profile can be kept constant transversely to the passage direction of the fibrous web in the treatment area and / or in the smoothing area in the direction of passage of the fibrous web. Due to the extended formation of the treatment area in the direction of passage and the residence time determined by the passage speed, an irreversible and preferably uniform action on the surface of the fibrous web takes place, whereby a smoothing of this is achieved.
  • variable adjustment of pressure profiles in the machine direction and / or cross-machine direction advantageously allows the targeted setting of property profiles or an adjustment of a constant property curve in the machine direction and / or cross-machine direction.
  • the pressure profile and / or smoothing pressure profile can be controlled or adjusted.
  • the variable adjustability of the pressure and / or smoothing pressure in the machine direction and / or cross machine direction can also be used as a control function in a control / regulation of at least one property of the fibrous web.
  • the treatment area is characterized by an inlet and an outlet area with regard to the pressure to be applied in the machine direction.
  • the pressure is thereby increased from an initial value, preferably 0 MPa and lowered again in the direction of the outlet in the machine direction.
  • the reduction is preferably continuous, ie free of increments.
  • the increase or decrease in the pressure or the pressure changes in the direction of passage of the fibrous web viewed between inlet and outlet preferably take place continuously.
  • the setting of a constant pressure curve in the machine direction and / or cross machine direction offers the advantage of setting a property profile.
  • the effect of the pressure and / or smoothing pressure on the fibrous web takes place either directly on the fibrous web surface or indirectly via further, the pressure-transmitting components, in particular a fiber web supporting the fabric.
  • the former case offers the advantage that here preferably the pressure is exerted directly against the fibrous web by means of at least one smooth surface and, at the same time, a smoothness effect is achieved depending on the configuration of the surface.
  • the pressure can be arbitrarily applied to a fibrous web leading and supporting clothing or movable contact surface, wherein the fibrous web is not affected in their leadership.
  • the pressure and / or smoothing pressure is applied in the simplest case via a contact surface against a mating surface.
  • the pressure which can be applied via the contact surface can be adjusted as a function of the geometry of the contact surface, arrangement and actuating force.
  • the contact surface and the mating surface are arranged opposite one another in such a way that they form a treatment region which is elongated in the direction of passage of the fibrous web.
  • Contact surface and counter surface are preferably movable and can be moved synchronously or at a differential speed to each other.
  • the pressure and / or smoothing pressure is exerted only by means of at least one movable contact surface against the fibrous web, preferably between the movable surface and the fibrous web and / or the fibrous web supporting fabric or surface of this component leading there is no speed difference.
  • the pressure and / or smoothing pressure is set directly as a function of the machine speed over a predefined residence time. Speeds with speed difference offer the advantage of increasing the smoothness effect.
  • the first variant is used in particular for designs which require different fibrous web properties on both sides.
  • the second variant offers the advantage that the same properties can be achieved on both sides of the fibrous web.
  • another such device on the other fibrous web surface is effective. The devices are then connected in series in the direction of passage of the fibrous web.
  • the treatment area extends in the direction of passage, in particular in the machine direction over a range of> 1 m, preferably> 3 m, particularly preferably> 5 m, very particularly preferably> 10 m, more preferably> 20 m.
  • the upper limit can be described as a function of the arrangement of the inlet into the treatment area and the remaining length of the drying section thereof.
  • belt presses are used, which are characterized in that the pressure on the fibrous web is applied over a belt.
  • Such belt press arrangements can be integrated in a particularly advantageous embodiment in combination with a heatable cylinder in the drying device, since these additionally contribute to increasing the drying effect.
  • the fibrous web is guided through at least one double press arrangement which forms an extended press nip which describes in the longitudinal and transverse treatment region and a surface pressure is exerted on the fibrous web on both sides of the treatment area via smooth press belts.
  • the embodiments with such extended, extending in the direction of execution of the fibrous web treatment gap offer the advantage of a considerable time compared to conventional manufacturing process prolonged pressurization and thus compression on at least the exposed side of the fibrous web. Due to the gap geometry generated thereby, in particular its length in the direction of passage and height perpendicular thereto, the surface topography of the fibrous web is influenced such that it has a low roughness. Due to the long, by the length of the gap and the speed of passage through this particular residence time takes place an irreversible and uniform action on the surface. The smoothing of the surface can be achieved purely mechanically by pressure or in combination with the targeted adjustment of other physical factors, in particular temperature increases.
  • the resulting surface pressure of the back and forth across the smooth press belts on the fibrous web can be kept constant in the passage direction or else that through the press nip within Volume guided throughout the treatment area.
  • the resulting surface pressure of the flat pressures exerted on both sides of the fibrous web within the treatment area is preferably set by controlling at least the surface pressure on one fibrous web side, while the other pressure applied to the opposite side is limited to a fixed value or also freely adjustable.
  • the control engineering effort can be significantly minimized and the adjustment can be made directly on the press belt.
  • the adjustment can be made considerably more sensitive.
  • the distance of the two press belts describing the height of the press nip is kept constant over the extent of the treatment zone.
  • the surface pressures are adjusted depending on the surface conditions on the fibrous web to maintain the distance and are therefore variably adjustable.
  • the pressure distribution in the longitudinal direction of the press nip and in the transverse direction is preferably freely adjustable.
  • the desired surface properties in particular smoothness, roughness
  • the desired surface properties can be set in a targeted manner.
  • the effect of pressure can be increased by influencing the condition of the surface areas.
  • at least one device describing a treatment area for applying a pressure to the fibrous web is arranged within the drying section for this purpose.
  • the individual treatment area is formed by at least one contact surface and an opposing surface or, when the contact pressure is active, also by the counter surface being formed as a contact surface of two contact surfaces acting on both sides of the fibrous web.
  • the individual contact surfaces are formed by endlessly circulating belts, in particular press belts. These allow any customizable space and space to be integrated into the drying device in a space-saving manner.
  • the individual device for at least indirect application of a pressure and / or smoothing pressure is formed by a drying device, comprising at least one drying cylinder, which is covered over at least one of its outer circumference by a pressure hood that exerts a pressure against the drying cylinder and at d he fibrous web together m at least one, a contact surface forming endless circulating belt in the form of a gas and liquid impermeable fabric and a drying fabric between the drying cylinder and the pressure hood can be passed.
  • a drying device comprising at least one drying cylinder, which is covered over at least one of its outer circumference by a pressure hood that exerts a pressure against the drying cylinder and at d he fibrous web together m at least one, a contact surface forming endless circulating belt in the form of a gas and liquid impermeable fabric and a drying fabric between the drying cylinder and the pressure hood can be passed.
  • a drying device comprising at least one drying cylinder, which is covered over at least one of its outer circumference
  • the blanket layer comes into contact with the smooth side of the device describing a treatment area for applying a pressure to the fibrous web in the drying section.
  • This can be, for example, a drying cylinder.
  • the individual device for at least indirect application of a pressure comprises at least one double belt press arrangement with two press elements each having a press belt, which form an extended press nip which describes a treatment region in the direction of passage of the fiber web.
  • the double belt press can be designed as an isobaric or isochronous double belt press.
  • a plurality of unilaterally acting on the fibrous web means for applying a pressure to the fibrous web are provided, which are connected in series in the direction of passage of the fibrous web along the drying section, wherein the individual devices are arranged and designed such that they are effective on different fibrous web pages to ensure the same properties on both sides.
  • the drying device may comprise at least one contact drying device for contact drying, in particular one or a plurality of heatable drying cylinders and / or an impingement drying device.
  • the impingement drying device is preferably arranged directly after the single press nip, wherein the fibrous web is transferred to the impingement drying device without free tension. This has the advantage that the fibrous web, which is still very moist and therefore has a low strength, can be transferred without burring despite the forces acting from outside.
  • the drying device can be formed by a plurality of drying devices in the form of so-called belt press drying devices, comprising at least one drying cylinder, which is covered over part of its outer periphery by at least one pressure cap which exerts a pressure against the drying cylinder and where the fibrous web together with at least one, a contact surface forming endless circulating belt in the form of a gas and liquid impermeable fabric and a drying fabric belt between the drying cylinder and the pressure hood can be passed.
  • the device for applying the increased pressure can be formed by at least one such drying device, wherein at this the pressure on the fibrous web is increased compared to the other drying devices and in which optionally the temperature of the drying cylinder can differ from those of the other drying cylinder.
  • This design offers the advantage of installing increased drying rates on short lengths. It is also conceivable execution of at least one such belt press with unheated cylinder.
  • the increase in strength and in particular the internal strength of the fibrous web can be achieved by adding glue into the pulp suspension or the pulp suspension to be supplied to the headbox.
  • glue may be provided within the machine for producing a fibrous web of the Einspaltpressanssen downstream and at least one means for applying a pasty medium, in particular glue.
  • Possible commissionable applicators are, for example, size presses, which are operated in the upflow mode, film presses in which the glue or the starch is applied indirectly via rollers. Film presses are suitable for applying glue with a solids content of up to 1 8% at application rates of up to 8 g / m 2 air-dry mass per side of the fibrous web.
  • white top kraftliner and / or white top testliner is produced by the method according to the invention, wherein these have at least two-layer construction with the top layer and the backsheet.
  • Several layers are also possible according to the inventive solution.
  • a multi-layered structure is located between the ceiling and the supine an insert.
  • the raw material is used to treat the raw mate rial to produce a fibrous web, in particular white top kraftliner and / or white top testliner, before the raw materials in the form of a fibrous stock suspension the constant part and the paper machine are fed, ground.
  • the grinding is carried out in at least one milling stage at a higher consistency of at least one pulp suspension of the two layers, preferably the higher-grade pulp suspension for the production of the ceiling layer.
  • This contains bleached short fibers and long fibers.
  • the co nsi nity of the suspension is advantageously adjusted to a consistency range between 4.5% and 8% (mass of the solid based on the suspension volume), preferably between 4.8% and 8%.
  • the advantage lies in a higher eric strength of the produced fibrous web and in a lower fines content than in grinding at a lower consistency. In addition, less grinding energy is needed compared to conventional grinding.
  • the forming unit of the paper machine for the back and the top layer each have a wire, at least one headbox is equipped with VerPnungswassertechnik.
  • VerPnungswassertechnik This has the advantage that the thickness profile in the cross machine direction can be better adjusted. This allows a better smoothing result in the smoother and avoids surface defects, such as mottling.
  • At least one roller of the former may be equipped with a screen shaker for formation improvement.
  • the forming unit for the ceiling and / or the supine position may comprise a hybrid former.
  • the fibrous web is first dewatered on both sides and from an average dry content of 3 to 5% on both sides.
  • the former unit is selected so that the individual layers still in a relatively wet state, that is at a Dry content of less than 9%, preferably less than 8% together.
  • This arrangement has the advantage that less expensive sieve suction and thus less energy for the production of the fibrous web are needed.
  • the layer strength is increased, which is an important quality feature, especially in Kraftliner.
  • a double-wire former in the production of the supine position of the fibrous web White Top Test in the European Union, it is advantageous for a double-wire former to be advantageous in this case.
  • the pulp suspension is guided via a headbox into a gap formed by two forming rolls which wrap around the forming roll and are dewatered there.
  • the twin-wire former is characterized by the fact that the forming roller is wrapped by both forming fabrics through an angle of more than 90 °.
  • Dewatering devices achieved.
  • the intake of false air compared to Siebsaugwalze can be minimized, thereby the gas content in the white water can also be reduced. As a result, the later effort to reduce the free air in the white water is much lower.
  • the inner shape iersieb a wire is assigned to a further layer, such as the protective layer or insert, the fibrous web formed and this Cyprusgautschte on the supine position formed in Doppelsiebformer. Subsequently, another wire is provided for the production of the ceiling layer. This is alsgautscht on the protective layer or insert. In the event that no protective layer or insert is provided, the ceiling layer is puffed directly onto the supine position.
  • the forming unit is fed from at least one multilayer headbox with a pulp suspension.
  • the multilayer headbox carries at least two different pulp suspensions in the individual layers for the production of the various layers.
  • the smoothing region located downstream of the treatment region comprises a smoothing device, which comprises a counter surface directly contacting the fibrous web on a first side and designed as a surface of a heated roll. It is also possible that the smoothing device comprises a, the fibrous web on a second side directly touching, designed as a surface of a metal strip or plastic belt contact surface. This allows a smooth smoothing without high loss of specific volume.
  • the smoothing device comprises a, the fibrous web on a second side directly touching, designed as a surface of a roller contact surface.
  • the smoothing device has one or two rollers which directly touch the fibrous web on a first and / or second side and at least one roller comprises a two-layered jacket, wherein the first, inner jacket layer is deformable and in particular made of a plastic or Polymer is composed and the second, outer cladding layer consists of a metal and is formed such that upon application of the smoothing pressure in the smoothing region an elastic deformation of the shell is formed.
  • the outer cladding layer consists of a metallic layer whose thickness is less than 1 mm, preferably less than 0.5 mm.
  • the layer is applied by a thermal spraying process.
  • the smoothing device consists of a soft-nip calender with two rolls, wherein at least one roll has a plastic cover.
  • Figure 1 illustrates in a schematic simplified representation of the basic arrangement and integration of a device for exerting a pressure on the fibrous web within a drying device
  • FIG. 2 illustrates a first advantageous embodiment with a device designed as a drying device and acting on one side on the fibrous web for applying a pressure;
  • Figure 3 illustrates a particularly advantageous development according to an embodiment of Figure 2 with a further second means for applying a pressure which is effective on the other fibrous web surface;
  • FIG. 4 illustrates a particularly advantageous further third embodiment with an embodiment of the invention in which a pressure is applied as a double-belt press arrangement.
  • FIG. 5 shows a variant for the treatment of the raw materials for producing a fibrous web before the raw materials in the form of a pulp suspension are fed to the constant part and to the paper machine.
  • FIG. 6 shows the constant part of the papermaking mast bar
  • FIG. 7 shows a first advantageous embodiment variant of a paper machine
  • FIG. 8 shows a second advantageous embodiment variant of a paper machine
  • FIG. 9 shows a third advantageous variant of a paper machine
  • FIG. 10 shows a fourth advantageous embodiment of a paper machine
  • FIG. 1 illustrates, in a schematically simplified representation, the basic principle and basic structure of a machine 1 designed according to the invention for producing material webs, in particular fibrous webs F in the form of paper, board or tissue webs.
  • a section of the machine 1 is shown here in a simplified schematic representation, wherein a coordinate system is created to clarify the individual directions.
  • the X-direction illustrates the longitudinal direction of the machine and is therefore referred to as the machine direction MD, which corresponds to the basic guide direction of the fibrous web F through the machine 1.
  • the Y direction corresponds to the width direction, i. the direction transverse to the machine direction MD, which is therefore also referred to as the cross-machine direction CD, while the Z direction represents the height direction.
  • the fibrous web F is formed essentially in a forming unit 2, which is not shown in detail in detail, from which the fibrous web F is transferred into a press arrangement 3 downstream of it in the machine direction MD.
  • the press arrangement 3 is designed according to the invention as a so-called single-gap press arrangement. This comprises within the entire press arrangement 3 only a single single press nip 4, which is formed by two press rolls 5 and 6.
  • the press fits 4 i st in the machine direction MD considered and thus carried out in the direction of passage of the fibrous web F through this preferably as an extended press nip.
  • a drying device 9 which can be designed in various ways.
  • the leadership of the fibrous web F takes place within thezelvornchtung 9 along a so-called drying section 10.
  • the pressure which is locally applied over at least a portion of the drying section 10, wherein the application of the pressure can be on one or both sides, causes an increase in the internal strength of the fibrous web F.
  • the device 11 for at least indirectly applying a pressure defines a in Machine direction MD and transverse machine direction CD at least one continuous or formed from a plurality of surface areas surface area, which describes the treatment area 12.
  • the at least indirect application of a pressure can take place on the upper and / or lower side FO, FU of the fibrous web F.
  • the temporal effect of the pressure is described as a function of the size of the treatment area 12, in particular the extent in the machine direction MD and the speed of movement of the fibrous web F through this.
  • the treatment area 12 can be described by at least one flat or curved surface. This preferably extends over the entire fibrous web F in the cross machine direction CD while passing through the drying device 9.
  • the device 11 for at least indirectly applying a pressure comprises a contact surface AF and a counter-surface GF.
  • the treatment area 1 2 is characterized for example by a length of> 1 m, preferably> 3 m, more preferably> 5 m, most preferably> 10 m.
  • the smoothing device 100 is arranged downstream of the drying section in this example. However, according to the invention, the arrangement of the smoothing device 100 is also possible within the drying section 10.
  • FIG. 2 illustrates, by way of example, with reference to a section of the machine 1, a first embodiment of an arrangement according to the invention and the formation of a device 1 1 for at least indirect application of a pressure within the drying section 10 formed by the drying device 9.
  • the web guiding path of the fibrous web F is determined Understood.
  • the downstream smoothing device 100 is not shown. In this regard, reference is made to the following figure.
  • the fibrous web F is transferred from a dewatering belt 13, in particular a wire belt as donating fabric to the press assembly 3 in a transfer area 14 to a fabric of the press assembly 3.
  • the fibrous web F is dewatered to a dry content TG of at least 16% in predominantly wood-containing materials and at least 18% in predominantly wood-free materials.
  • the fibrous web F is here, for example, together with the Entracesseru ngsband 1 3, in particular wire and a ufshake for Fl u id receptive press felt 15 through a, formed by a besaugbaren roller 16 and a press roll 17 so-called pre-press nip 18 out.
  • the fluid to be removed in particular water
  • the suctionable roller 16 On the opposite side, the fluid emerging from the fibrous web F is taken up by the press felt 15 and transported away therewith.
  • the transfer to the press assembly 3 is free from a free train from the dewatering belt 1 3, in particular screen belt to one, the fibrous web F within the press assembly 2 leading fabric.
  • the fibrous web F is guided through the press nip 4 between two endlessly running and fluid-absorbable drainage belts 7 and 8.
  • the dewatering belts 7 and 8 are preferably press felts.
  • the dewatering belt 7 in the form of the upper felt is designed as ab- or accepting clothing and arranged such that it dips supported on a suction device, in particular suction roller 19 in the guide region of the dewatering belt 13 and the fibrous web F due to the over the suction roller 9 applied negative pressure takes over.
  • the fibrous web F is then continued supported on the dewatering belt 7 and sandwiched by the second dewatering belt 8 with this led through the press nip 4 of the press arrangement 3.
  • the individual press rolls 5 and 6 of the press arrangement 3 can be designed in different ways. These can be designed and dimensioned such that they form only a simple press nip or preferably a press nip 3 extended in the machine direction MD.
  • the press roll 5 is designed as a shoe press roll comprising a rotatable flexible roll shell 20 with one at its end Inner circumference effective, one with respect to the press roller acting as a counter roller 6 concave contact surface 21 having Anpresstician 22 in the form of a press shoe.
  • the fibrous web F is supported on this along the surface of a first drying cylinder TZ1 and further guided on this free of support by the belt 26 and subsequently supported by a dryer fabric belt 27 from the surface of the drying cylinder TZ1 and the pulley 24.1 and passed through the drying device 9.
  • the drying device 9 can be designed in various ways.
  • the drying device 9 comprises at least one contact drying device and / or an impingement drying device.
  • the drying device 9 is formed by way of example as a single-row drying cylinder arrangement comprising at least one, preferably a plurality of drying cylinders TZ1 to TZn, along the surface of the fibrous web F over a portion of the outer circumference this is guided in contact.
  • the pulleys 24.1 to 24th n can be formed as grooved and / or besaugbare rolls, in particular inside or outside Shen besaugbare rollers.
  • the drying device 9 can be designed in various ways, the fibrous web F being guided via one or more functional units influencing the dry content of the fibrous web F.
  • the drying device 9 may comprise one or more devices arranged in series in the direction of passage of the fibrous web F for direct or indirect drying. These may, as already stated, be contact dry means and / or impingement drying devices.
  • a device 1 1 for at least indirectly applying a pressure to the fibrous web F is provided here. This is integrated into the guide path of the fibrous web F. This is the 2 out of the meander-shaped guide path predetermined by the arrangement of the drying cylinders TZ1 to TZn and fed to the device 11.
  • the device 11 can also be integrated in the machine direction MD within the drying cylinder arrangement, ie in the axial direction in the longitudinal direction, but this leads to an increase in the extent of the machine 1 in this direction. Therefore, according to a particularly advantageous embodiment, the arrangement of the device 1 1 in the vertical direction offset from the drying cylinders TZ1 to TZn.
  • the device 1 1 is designed in the illustrated case as a belt press 28.
  • the treatment area 12 formed by this is curved and writable by an envelope.
  • the fibrous web F is guided on a curved, movable, rotatable surface in the illustrated case 29 as counter surface GF supported on the dryer fabric 27 and on the side facing away from the surface 29 side of the fibrous web F acts another g ekrü m mte surface 30 in the F un technische surface AF.
  • a drying device 31 is used to exert the pressure within the drying device 9 in a particularly advantageous embodiment with functional concentration, which takes over the function of the device 1 1 in addition to the drying.
  • This comprises a heatable drying cylinder 32 which is covered over a part of its outer periphery 33 by at least one, a contact pressure relative to the drying cylinder 32 performing printing hood 36 and in which the fibrous web F together with at least one endless circulatingkowskisiebband, here thetersiebband 27 and a than Press belt acting impermeable fabric 35, which is impermeable to gas and liquids in particular, between the drying cylinder 32 and the pressure hood 36 can be passed.
  • the fabric 35 acting as a press belt is preferably designed as a metal strip, in particular steel strip.
  • the surface 29 acting as counter surface GF is formed by the surface of the drying cylinder 32.
  • the contact surface 30 is formed by the covering 35 which is supported on the pressure hood 36, which wraps it around.
  • the Dry fabric belt 27 and the fabric 35 in each case form a loop, wherein the two endless loops are arranged inside each other and guided over at least guide rollers and guide rollers, wherein at least one of the bands 35 and 27, preferably both, at least indirectly and preferably at the same speed be driven speed.
  • the kbar is also a differential speed, which allows an additional smoothness effect.
  • a further drying wire belt 34 may additionally be provided between the dryer fabric belt 27 and the fabric 35, in particular metal strip, which acts as a press belt.
  • Thensiebb sections 27 and 34 and the Bespann ung 35 are guided over a part of their U mlaufweges contacting each other.
  • this contact region forms an enveloping region on the drying cylinder 32, in particular on the outer circumference 33 of the drying cylinder 32, and preferably also extends beyond a part beyond.
  • the separation can be done directly in the drying cylinder 32 or this downstream.
  • the pressure hood 36 is effective.
  • the drying wire belt 27 supports on its outer side 27A, which corresponds to the fibrous web F contacting surface, the fibrous web F in the leadership in the drying cylinder 32 from.
  • the drying cylinder 32 is preferably heated. The selected temperatures are for example 90 ° C to 200 ° C, preferably 140 ° C to 200 ° C.
  • the illustrated embodiment of a belt press 28 is exemplary. Also conceivable are other designs. With regard to the structure of such a device, reference is made, for example, to WO 2005/100682 A1. It is not absolutely necessary to use the available contact surfaces or mating surfaces.
  • the strength of the fibrous web F can be increased by the pressure in the container 1 2 and the strength of the fibrous web F can be increased.
  • the figure 2 illustrates an example of an embodiment with one-sided treatment of the fibrous web F by the compressive force is applied to the fibrous web underside FU, while the fibrous web top side FO guided on the surface of the drying cylinder 32 is.
  • at least one second device 1 1 .2 is provided which is arranged and constructed in such a way that it exerts a pressure on the web other side not treated with the first device 1 1 according to Figure 2, here exerts the fibrous web top side FO.
  • the basic structure of the device 1 1 and 1 1 .2 corresponds to that of the device 1 1 in Figure 2, which is why the same reference numerals are used for the same elements.
  • Figures 2 and 3 illustrate this particularly advantageous embodiments, which are characterized by a space-saving arrangement, especially when the devices 1 1, 1 1 .2 are arranged in the vertical direction with offset to the already existing drying section 10 and the fibrous web F only the usual drying cylinder arrangement brought out and introduced into this again.
  • the extent in the machine direction MD can be kept short or virtually unchanged in comparison to conventional drying devices 10, and the space available in any case in the vertical direction can be effectively utilized.
  • the guide over a curved path allows the generation of the pressure partly already on the tension of the dryer fabric 27 itself.
  • a third embodiment is characterized by the formation of a planar treatment zone 12.
  • the pressure is applied to a double belt press 37, which acts on both sides of the fibrous web F and generates a pressure on it.
  • the basic construction of the press arrangement 3 corresponds to that described in FIGS. 2 and 3, for which reason the same reference numbers are used for the same elements and reference is made to the description thereof.
  • the device 1 1 for at least indirectly applying a pressure to the fibrous web F according to the invention comprises at least one press arrangement in the form of a so-called double belt press arrangement 37. This works continuously and forms a in a continuous flow for the fibrous web F prolonged press nip 38, we s ech in a treatment area 12 describes.
  • a pressing element 40.1, 41.2 comprises a so-called press belt 41, 41 and 41, which is designed as an endlessly circulating belt and is guided over at least two guide rollers, which are referred to as drums.
  • the in the feedthrough direction at the inlet into the press nip 38 arranged and the press belts 41 .1, 41 .2 supporting or leading rollers are also referred to as inlet drum, while the other in the direction of passage through the double belt press arrangement 37 these downstream, arranged at the outlet rollers d the outlet drums form , which are preferably designed to be drivable.
  • the fibrous web is subjected to at least one pressure over a predefined surface, preferably the entire surface .
  • This surface pressure p1 and p2 respectively acting on the fibrous web F via the press belts 41 .1, 41 .2 can be variably adjusted as an isobaric press system depending on the design of the double belt press arrangement 37 over the treatment area 12 or in the form of an isochoric press system.
  • Figures 2 to 4 illustrate example advantageous variants, the execution is not limited to this kt. It is crucial that the arrangement takes place within the drying section 10, in particular in a region of still high humidity and preferably the device 1 1 upon reaching a dry content of 16% predominantly wood-containing and at least 18% predominantly wood-free substances on the example Fulcrum surface FU and / or FO acts.
  • the individual devices 1 1 can be combined with each other used here, with a guide over curved or straight dry sections is possible here for the individual fibrous web surfaces FU, FO. Also conceivable is an arrangement of several such devices in the direction of passage of the fibrous web F successively.
  • the fibrous web F is subjected at least on one side, locally and for a limited time, to an increased pressure in relation to the pressure otherwise acting on it within the drying section 10.
  • This pressure is in the range of 0.04 MPa to 0.5 MPa, preferably 0.05 MPa to 0.5 MPa, more preferably 0.2 MPa to 0.3 MPa and can be applied in various ways. It is conceivable, preferably to let the pressure act evenly over the entire pressure surface to be formed or, according to a particularly advantageous embodiment, locally and temporally variable. This local and temporal variability is achieved by adjusting the MD machine pressure and / or across it in the CD cross direction.
  • the pressure can vary from one another, in particular in the edge regions of the fibrous web F as well as in the middle region.
  • the pressure setting can be carried out fixedly with a defined pressure or a predefined pressure profile or, according to a particularly advantageous embodiment, can be variably controlled, preferably adjusted, by the fibrous web properties to be achieved in adaptation.
  • the Nachowski the drying device 9 takes place free of an interposition of other functional components, ie directly.
  • the drying device 9 itself can be designed in various ways. This may be so-called contact drying devices as described in FIGS. 2 to 4, in which the fibrous web passes in direct contact with the surface of a heated drying cylinder TZ1-TZn.
  • impingement drying devices which may be infrared dryers or else Air-flow drying devices, in particular impingement-drying devices or so-called TAD-drying devices, that is
  • the dry content can be varied depending on the initial properties of the fibrous web in the transfer region from the press arrangement 3 to the drying device 9.
  • FIG. 5 shows a further advantageous variant of the solution according to the invention for treating the raw materials for producing a fibrous web, in particular white top kraftliner and / or white top testliner, before the raw materials in the form of a pulp suspension are fed to the constant part and the paper machine 70.1, 70.2, 70.3 are supplied.
  • This example shows a simplified stock preparation for the two-ply production of White Top Kraftliner and / or White Top Testliner.
  • the first layer consists at least of a fabric made of bleached short fibers and long fibers and represents the high-quality, decisive for the strength layer, the so-called ceiling layer.
  • These raw materials are first stacked in a cloth chest 51 .1 and then in a first grinding stage in a refiner 52.1 ground.
  • the consistency is for example 6%.
  • the second milling stage also follows in a refiner 52.2. Thereafter, the cloth is stacked in the machine chest 51 .3.
  • the supine position in this example consists of two types of material - a high-grade variety of unbleached short fibers and long fibers, and a second grade, consisting of waste paper, such as cardboard from a recycling process.
  • the high-quality material is fed to the Stoffbütte for the supine 53.1 a first refiner 54 and ground there and then fed to a mixing device 55 and mixed with a desired waste paper content.
  • the supine position can also be made from 100% unbleached short fibers and long fibers.
  • the waste paper strand is eliminated.
  • additives such as Retention agent and to dilute white water are added.
  • the waste paper content comes directly from the Altpapierstoffbütte for the supine 53.2.
  • the mixing device 55 the material mixture is ground in a further grinding step in a refiner 56 and then also fed to a machine chest 53.4. The substances for the two layers are fed from the respective machine chest 51 .3, 53.4 to the constant part 60 in the further course of the material flow.
  • the constant part 60 is shown, which is immediately upstream of the paper machine.
  • the pulp suspension for the preparation of the ceiling layer is led from the machine chest 51 .3 via a pump to another mixing device 62.1, in which a further mixture with white water 1 and dilution is carried out.
  • the fiber suspension is guided and cleaned over preferably several cleaner stages 70 and reduced in a degassing device 61, the air content.
  • the mixing device 62.2 the dilution is carried out on headbox consistency.
  • a sieve 65 coarse flakes are crushed and impurities removed.
  • the impurities are again passed through a sieve device 67, 68 and the Accept passed into the degassing device 61, 64.
  • the pulp suspension for the blanket layer is fed to the headbox.
  • the pulp suspension for the supine position is treated accordingly.
  • FIG. 7 shows a first, advantageous embodiment variant of a paper machine for the production of white top kraftliners.
  • the forming region is shown in greater detail and the smoothing device 100 and the winding station 90 are shown.
  • the fiber suspensions for the top layer and the backsheet are fed to the corresponding headboxes 80.2 and 80.1 and dewatered by the wire meshes 2.2 and 2.1 and then sixteengegautscht the fibrous webs formed into a fibrous web.
  • the endless wire for the blanket can be associated with a double-wire unit for double-sided drainage, which is not shown.
  • the fibrous web F is then transferred into the press assembly 3 and in the course of Paper machine further dehydrated and dried.
  • the surfaces of the fibrous web in the smoothing device 100 are smoothed smoothly and volume-savingly with low smoothing pressure in a smoothing device 100, which is designed as a calender, and are slid on to the opening 90 lt, which is equipped with a center drive.
  • a smoothing device 100 which is designed as a calender
  • At least one of the headboxes 2.1, 2.2 is designed as a dilution water headbox.
  • the treatment unit 1 1 is arranged downstream of a pre-drying and this in turn followed by a size press, not shown.
  • the glue application is dried.
  • the driers and driers are provided to stabilize the course of the fibrous web F.
  • FIG. 8 shows a second advantageous embodiment variant of a paper machine.
  • the forming unit 2 is formed by a sieve arrangement for the formation of a three-ply fibrous web F, for example white-top kraftliner and / or white top testliner.
  • the arrangement is chosen so that the individual layers are still fauxgegautscht in a relatively wet state, that is at a dry content of less than 9%, preferably less than 8%.
  • This arrangement has the advantage that less expensive suction filters and thus less energy for the production of the fibrous web F are required.
  • the layer strength is increased, which is an important quality feature, especially in white top kraftliner.
  • FIG. 9 shows a further variant of the forming unit 2. It consists of a twin-wire former, which passes through a multilayer headbox 80.1, 80.2, 80.3 with different pulp suspension, for producing the different layers of the fibrous web F, in particular for white top kraftliner and / or white top testliner , is supplied.
  • the wrap around the forming roller 2.7 arranged at the beginning of the dewatering, in the loop of the inner forming fabric 2.1, is more than 90 °.
  • FIG. 10 shows an advantageous embodiment variant of a paper machine 400 for the production of white top testliner. This embodiment variant differs from the embodiment shown in Figure 7 essentially by the design of the forming unit 2.
  • the forming unit 2 consists of a Doppelsiebformer m ith the inner forming iersieb 2, 1 and an outer ßeren Formiersieb 2.2, and two Langsieben 2.5 and 2.6 for the production of white top testliner.
  • the Formiers 2.1, 2.2 wrap around the forming roller 2.7 by more than 90 °. This ensures a high dewatering performance with good distribution of the fillers and fillers in the z-direction of the fibrous web F.
  • the twin-wire former the supine position, on the first long-screen 2.5, the protective layer or the inlay and on the second long-screen 2.6, the ceiling layer is made.
  • the supine position is dewatered to a dry content of about 1 2% before the thawing of the protective layer.
  • the layer of blanket is puffed up onto the protective layer.
  • the impingement drying devices 42 associated with the drying device are shown in FIG. 8 to indicate the increase in dry content.
  • an applicator 95 for applying starch to the fibrous web F after the treatment unit 1 1, 28, 31 is shown. It is designed as a size press 95.
  • the wire screens 2.5 and 2.6 can optionally be designed as a hybrid former with attached screen unit.
  • 1 1, 1 1 .1, 1 1 .2 means for at least indirectly applying a pressure

Landscapes

  • Paper (AREA)

Abstract

L'invention concerne un procédé et une machine (1) pour fabriquer une bande de matière fibreuse (F), en particulier une bande de papier, de carton ou de papier mousseline, la bande de matière fibreuse (F) étant guidée dans un système de presse (3) entre deux bandes d'assèchement (7, 8) courant sans fin, absorbant du fluide, à travers une unique fente (4) de presse réalisée allongée dans le sens de passage et étant transmise, après être passée par le système de presse (3), à un dispositif de séchage (9) formant un tronçon de séchage (10) dans le sens de passage pour la bande de matière fibreuse (F) et étant guidée à travers ce dernier. L'invention est caractérisée selon une réalisation particulièrement avantageuse en ce qu'une pression plus élevée que celle agissant sur la bande de matière fibreuse (F) dans la zone restante du tronçon de séchage (10) est appliquée de manière localement limitée sur au moins une zone partielle caractérisant une zone de traitement (12, 12.1, 12.2) dans le tronçon de séchage (10) dans le sens de passage de la bande de matière fibreuse (F) et en ce qu'au moins une zone de lissage dans laquelle une pression de lissage est appliquée sur la bande de matière fibreuse (F), cette dernière étant lissée au moins d'un côté, est disposée en aval de la zone de traitement (12, 12.1, 12.2) dans le sens de passage de la bande de matière fibreuse (F).
PCT/EP2011/058251 2010-07-16 2011-05-20 Procédé et machine pour fabriquer une bande de matière fibreuse WO2012007212A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010031450.1 2010-07-16
DE102010031450A DE102010031450A1 (de) 2010-07-16 2010-07-16 Verfahren und Maschine zur Herstellung einer Faserstoffbahn

Publications (1)

Publication Number Publication Date
WO2012007212A1 true WO2012007212A1 (fr) 2012-01-19

Family

ID=44119165

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/058251 WO2012007212A1 (fr) 2010-07-16 2011-05-20 Procédé et machine pour fabriquer une bande de matière fibreuse

Country Status (2)

Country Link
DE (1) DE102010031450A1 (fr)
WO (1) WO2012007212A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022160024A1 (fr) * 2021-01-27 2022-08-04 Klabin S.A. Papier white top kraftliner, procédé de production dudit papier, utilisation de ce papier et emballage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016083172A1 (fr) * 2014-11-28 2016-06-02 Voith Patent Gmbh Dispositif de production d'une bande de matière fibreuse
AT526619A1 (de) * 2022-11-08 2024-05-15 Mondi Ag Verfahren zur Herstellung einer bedruckbaren Linerbahn für Verpackungen sowie bedruckbarer Liner für Verpackungen
AT526620A1 (de) * 2022-11-08 2024-05-15 Mondi Ag Verfahren zur Herstellung einer bedruckbaren Linerbahn für Verpackungen sowie bedruckbarer Liner für Verpackungen

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999064671A1 (fr) * 1998-06-10 1999-12-16 Valmet Corporation Machine a papier integree
EP1072721A2 (fr) 1999-07-24 2001-01-31 Voith Paper Patent GmbH Machine à papier
WO2005100682A1 (fr) 2004-04-13 2005-10-27 Voith Patent Gmbh Machine destinee a la fabrication d'une bande de matiere fibreuse
DE102004039785A1 (de) 2004-08-16 2006-02-23 Voith Paper Patent Gmbh Papiermaschine mit Ein-Nip Presse
EP1647628A1 (fr) 2004-10-16 2006-04-19 Voith Paper Patent GmbH Section de presse
DE102004056320A1 (de) 2004-11-22 2006-05-24 Voith Paper Patent Gmbh Ein-Nip Presse plus Hochleistungstrockner 2
EP2072672A1 (fr) * 2007-12-20 2009-06-24 Metso Paper, Inc. Agencement en connexion avec la section de pressage d'une machine de fabrication d'une bande de matériau
WO2009147285A1 (fr) * 2008-06-04 2009-12-10 Metso Paper, Inc. Procede de manipulation d’une bande fibreuse dans une calandre a courroie metallique et dispositif permettant la mise en œuvre de ce procede

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999064671A1 (fr) * 1998-06-10 1999-12-16 Valmet Corporation Machine a papier integree
EP1072721A2 (fr) 1999-07-24 2001-01-31 Voith Paper Patent GmbH Machine à papier
WO2005100682A1 (fr) 2004-04-13 2005-10-27 Voith Patent Gmbh Machine destinee a la fabrication d'une bande de matiere fibreuse
DE102004039785A1 (de) 2004-08-16 2006-02-23 Voith Paper Patent Gmbh Papiermaschine mit Ein-Nip Presse
EP1647628A1 (fr) 2004-10-16 2006-04-19 Voith Paper Patent GmbH Section de presse
DE102004056320A1 (de) 2004-11-22 2006-05-24 Voith Paper Patent Gmbh Ein-Nip Presse plus Hochleistungstrockner 2
EP2072672A1 (fr) * 2007-12-20 2009-06-24 Metso Paper, Inc. Agencement en connexion avec la section de pressage d'une machine de fabrication d'une bande de matériau
WO2009147285A1 (fr) * 2008-06-04 2009-12-10 Metso Paper, Inc. Procede de manipulation d’une bande fibreuse dans une calandre a courroie metallique et dispositif permettant la mise en œuvre de ce procede

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022160024A1 (fr) * 2021-01-27 2022-08-04 Klabin S.A. Papier white top kraftliner, procédé de production dudit papier, utilisation de ce papier et emballage

Also Published As

Publication number Publication date
DE102010031450A1 (de) 2012-01-19

Similar Documents

Publication Publication Date Title
EP2576900B2 (fr) Procédé pour produire une bande de matière fibreuse multicouche revêtue
DE60223385T2 (de) Verfahren, papiermaschine und rohpapier zur herstellung eines einfach bestrichenen papiers mit lwc qualität
DE10084571B4 (de) Verfahren zum Herstellen von Papier und Papiermaschinenlinie
EP2576895B1 (fr) Machine, procede et application d'une machine pour produire une bande de papier, en particulier une bande de papier pour sac
EP3224409B1 (fr) Procédé et dispositif de fabrication de papier d'emballage
WO2011151238A1 (fr) Procédé de production d'une bande fibreuse multicouche enduite
DE102010031440A1 (de) Verfahren und Maschine zur Herstellung einer Faserstoffbahn
DE60125582T2 (de) Verfahren zur herstellung von papier, insbesondere eines beschichteten feinpapiers, und papiemaschine insbesondere zur herstellung eines beschichteten feinpapiers
DE102014210879A1 (de) Verfahren zur Herstellung von mehrlagigem Verpackungspapier, Papiermaschine zur Herstellung von mehrlagigem Verpackungspapier und mehrlagiges Verpackungspapier hergestellt nach diesem Verfahren
WO2012007212A1 (fr) Procédé et machine pour fabriquer une bande de matière fibreuse
WO2004109011A2 (fr) Procede et systeme pour produire une bande de papier sanitaire
WO2007003504A1 (fr) Procede de fabrication d'une bande continue de papier, en particulier de papier heliographique
WO2011157639A1 (fr) Procédé de fabrication d'une bande de matière fibreuse couchée
DE102004017808A1 (de) Maschine und Verfahren zur Herstellung einer Faserstoffbahn
EP3384082A1 (fr) Dispositif de fabrication d'une bande de matière fibreuse
WO2012007297A1 (fr) Machine dotée d'une section des presses et procédé de fabrication d'une bande de matière fibreuse
EP2309058A1 (fr) Machine de fabrication et/ou de traitement d'une bande de matière fibreuse
DE102010031447A1 (de) Verfahren und Maschine zur Herstellung einer Faserstoffbahn
WO2020030320A1 (fr) Machine et procédé de production d'une bande de papier brut de carton ondulé
EP2305882A2 (fr) Procédé et machine destinés à la fabrication d'une bande de matière fibreuse
DE102015223663A1 (de) Vorrichtung zur herstellung einer faserstoffbahn
DE102004017823A1 (de) Papiermaschine
EP4323581A1 (fr) Machine et procédé pour la production d'une nappe fibreuse
DE102021121837A1 (de) Maschine zur Herstellung und/oder Behandlung einer Faserstoffbahn
EP1842961A1 (fr) Procédé et dispositif de traitement d'une bande de matière fibreuse

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11720528

Country of ref document: EP

Kind code of ref document: A1

122 Ep: pct application non-entry in european phase

Ref document number: 11720528

Country of ref document: EP

Kind code of ref document: A1