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EP2588668A2 - Method for producing crepe paper that is smooth on one side - Google Patents

Method for producing crepe paper that is smooth on one side

Info

Publication number
EP2588668A2
EP2588668A2 EP11736307.7A EP11736307A EP2588668A2 EP 2588668 A2 EP2588668 A2 EP 2588668A2 EP 11736307 A EP11736307 A EP 11736307A EP 2588668 A2 EP2588668 A2 EP 2588668A2
Authority
EP
European Patent Office
Prior art keywords
paper
crepe
paper web
press
range
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
Application number
EP11736307.7A
Other languages
German (de)
French (fr)
Other versions
EP2588668B1 (en
Inventor
Dirk Schuldt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Papierwerke Lenk AG
Original Assignee
Papierwerke Lenk AG
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 Papierwerke Lenk AG filed Critical Papierwerke Lenk AG
Priority to PL11736307T priority Critical patent/PL2588668T3/en
Publication of EP2588668A2 publication Critical patent/EP2588668A2/en
Application granted granted Critical
Publication of EP2588668B1 publication Critical patent/EP2588668B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/12—Crêping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/12—Crêping
    • B31F1/14—Crêping by doctor blades arranged crosswise to the web
    • B31F1/145—Blade constructions
    • 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
    • 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
    • D21H25/005—Mechanical treatment
    • 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
    • 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

Definitions

  • the present invention relates to a process for producing single-sided crepe paper.
  • the invention relates to crepe paper which has been produced by the process according to the invention, in particular on a paper machine, and to the use of crepe paper.
  • Crepe paper is known in the art and is usually used as a technical paper for wrapping, insulation, coating and as a carrier material in particular in roofing membranes, as a medical paper for steam and gas sterilization,
  • Dental paper as wrapping papers, packing crepe papers, crepe papers for textile sleeve production, as insulation crepe paper for the electrical industry,
  • Interleaf paper protective paper, used for crafting, decorating, for paper flowers and the like.
  • creping is accomplished by scraping the paper web from a heated cylinder, such as a Yankee cylinder. According to the dry content of the paper web is between
  • the object of the present invention is to at least partially overcome the disadvantages known in the prior art.
  • the above object is achieved by an inventive method for the continuous production of crepe paper according to claim 1 and a paper machine for producing the creping paper according to claim 6 solved.
  • Particularly preferred embodiments are
  • the inventive method for the continuous production of crepe paper comprises the steps of producing a paper web from a stock suspension, mechanical dewatering of the paper web in a press section, the creation of a crepe structure in the sheet structure of the paper web and the thermal drying of the paper web. Characterized the method of the invention for the continuous production of crepe paper by applying the creped paper web to a Yankee cylinder by means of a volume-saving
  • Pressing system for drying and producing a smooth surface on the paper web Pressing system for drying and producing a smooth surface on the paper web.
  • the paper produced by the process according to the invention is understood to mean a crepe paper which receives a reduction in the paper web caused by the creping and thus, in particular, an increased ductility and
  • the creped paper is thereby u.a. smoother, more compressible and less sensitive to mechanical stress.
  • the crepe paper for example, comes to
  • Covering for painting and varnishing, for hygiene (crepe tissue paper), as a hinge for book spines, as masking paper in roofing membranes, etc. for
  • the production of a paper web from a stock suspension in the context of the present invention is understood to mean the process step of dewatering by means of sieve (s) and sheet formation during paper production.
  • the stock suspension is preferably metered via a headbox onto (between) a rotating sieve (e) and dehydrated, whereby a filter cake is formed.
  • corresponding Siebpartien are Langsiebpartien, Langsiebpartien with attached deck sieve or Eisseur, Rundsiebpartien, Rundsiebpartien with Rundsiebformern, Duoformer, Hybridformer, combinations thereof and the like.
  • All types of drainage of the paper web in a press section in the sense of the present invention all types of drainage of the
  • Paper machines are lay presses, suction presses, perforated & grooved press rolls, heated press rolls, Flexitherm & NipcoFlex rolls, felted, double felted, shoe presses, combinations thereof, and the like.
  • Creping doctor understood by compression of the paper web.
  • the mechanical dewatering by means of at least two, preferably three press nips, wherein at least one roller, in particular the third and last roller of the press section serves as a counter roll for a creping doctor and is also referred to as a creping roller.
  • a press nip in the sense of the present invention is understood to mean the gap between two press rolls, between which the paper web runs and on which a predetermined line force is exerted.
  • Counter-roll for a creping doctor in the sense of the present invention is understood to mean a roll against which a creping doctor abuts, which upsets the paper web and thereby produces the creping.
  • the dry content of the paper web after the wire section is between 16 and 23% and / or the dry content before the production of the crepe structure is between 25 and 45%.
  • Dry content of the paper web in the context of the present invention is understood as meaning the dry content of paper and pulp. The determination is carried out, for example, in accordance with the standard: BS EN ISO 638 Paper, board and pulp - Determination of dry content - Heating cabinet method. Thermal drying of the paper web in the sense of the present invention is understood as meaning types of contact drying in the paper machine, in particular cylinder drying. For example, other
  • Yankee cylinders are understood to mean heated cylinders with a large diameter and a smooth surface, such as, for example, a Yankee cylinder.
  • the dry content of the paper web before application to a Yankee cylinder is in the range between 50 and 80%, preferably between 60 and 75% and in particular in the range of 65 and 70%.
  • the creped paper web is applied to a Yankee cylinder using a volume-gentle nip system.
  • a volume-protecting pressure system is understood to mean a pressure system which does not essentially destroy the creping of the crepe paper and the volume of the crepe paper in one
  • Anpresssystems is also a German press, or a corresponding
  • Gloss of the paper web in the sense of the present invention is understood to mean the gloss of crepe paper as an optical impression perceived when viewing the surface.
  • the determination is carried out, for example, according to the standard: DIN 54502.
  • the crepe structure has a
  • Creping factor in the range of 1 to 20% and in particular the fiber orientation in the paper web a longitudinal / transverse ratio in the range of 1: 1 to 1: 2.5.
  • the percentage ratio between the uncreped and the creped paper web is understood, in particular by the creping a reduction of the paper web is effected.
  • the fiber orientation is determined in the sheet forming process in the paper machine and can be determined, for example, with image analysis methods, laser scattering methods, etc.
  • the creping doctor has a
  • Abrasion angle ⁇ in the range of 0.5 ° to 10 °, in particular between 3 ° to 8 ° and / or an angle of attack ⁇ of 20 ° to 30 ° and / or an angle ⁇ between 5 ° to 20 °, in particular of about 14 ° up.
  • grinding angle ⁇ (alpha) is understood to be the angle of the ground creping edge.
  • the angle of incidence ⁇ (gamma) is understood to mean the angle of the creping doctor to the counter-roller.
  • the angle of attack ⁇ (beta) is understood to mean the angle of incidence of the creping doctor relative to the vertical axis of the counter-roller.
  • the object of the present invention is also achieved with a paper machine for producing a crepe paper. This has at least one
  • Headbox a wire section for producing a paper web from a
  • the Smoothing device has at least one Yankee cylinder, which with a
  • a soft roller is understood to mean a roller with a soft cover in the range from 10 to 30 Pusey & Jhone.
  • the term "felted felt” is understood to mean a felt which, in particular, protects the crepe paper web with regard to the paper-specific volume or the creping structure.
  • a vellum felt is used in the one side of the due to its compressibility
  • Crepe paper web can be pressed in the press nip and thus the
  • Crepe paper web is spared from the pressure in the press nip.
  • Schonfilz may according to another preferred embodiment also have a ribbing or other surface structure to give the crepe paper another particular visible structure or marking.
  • Size press and / or a calender, and / or a reel provided.
  • a further thermal drying device in the sense of the present invention is understood as meaning, for example, an after-dryer section.
  • a size press is understood to mean, for example, a roll applicator for the application of dry strength additives.
  • a device for rolling up the finished produced paper web such as a Poperoller- reeling understood.
  • the press section has a 1. Press, in particular with a line force in the range of 0 to 10 kN / m for producing a dry content in the paper web in the range of 25 to 30%, a second press, in particular with a line force in the range of 35 to 45 kN / m for producing a dry content in the paper web in the range of 27 to 38% and preferably a third press, in particular at a line force in the range of 45 to 55 kN / m to produce a dry content in the paper web in the range of 25 to 45% on.
  • Line force in the sense of the present invention is understood to mean the force which is exerted on the line in the press nip.
  • At least one roller of the press section is designed as a creping roller, in particular with a finished surface.
  • materials from which these finished surfaces are at least partially made are tungsten carbide compounds, in particular di-tungsten carbide, tungsten monocarbide and
  • Tungsten carbide combinations thereof, and the like.
  • a creping doctor is used for the production of the creping structure, which has in particular a ceramic coated scraper edge.
  • the creping doctor has a grinding angle ⁇ (alpha) in the range of 0.5 ° to 10, in particular between 3 ° to 8 ° and / or the setting angle ⁇ (gamma) of 20 ° to 30 ° and / or the angle ⁇ (beta) between 5 ° to 20 °, in particular of about 14 °.
  • the paper machine before the application of crepe paper according to the invention on a Yankee predrying particular cylinder drying to produce a dry content of crepe paper web according to the invention in the range between 50 and 80%, preferably between 60 and 75% and
  • Cylinder drying in the context of the present invention is understood to mean heated drying cylinders which are used in a paper machine for drying the paper web.
  • the software roll is part of a German press, which the paper web to the
  • a Schonfilz such as a vellum felt used, wherein preferably the line force between the press and cylinder in the range of 5 to 20kN / m.
  • the inventive method comprises the continuous
  • Core paper which was preferably produced on a paper machine according to the invention.
  • the present invention also includes the use of the crepe paper as a technical paper for wrapping, insulation, coating and as
  • Carrier material in particular in roofing membranes, as medical papers for steam and gas sterilization, dental crepe papers, as gift papers, packing crepe papers, crepe papers for textile sleeve production, as insulation crepe paper for the
  • Packaging for crafting, decorating, for paper flowers and the like.
  • crepe paper is smooth on one side and with the surface properties which are changed thereby, for example, for a multiplicity of others
  • Fields of application can be used. Such are, for example, the Kaschierhus the crepe paper, the coating option, in particular the
  • FIG. 2 is a schematic drawing of the apparatus used in the method according to the invention for producing a creping structure
  • FIG. 3 is a schematic drawing of the method according to the invention
  • Fig. 4 is a schematic drawing of the thermal drying with a
  • the embodiment of Figure 1 shows a creping blade 5 with a scraper edge 17, a grinding angle ⁇ , for example, between 3 ° and 8 °, a thickness a between 0.6 to 1 mm and a length b between 70 to 75 cm.
  • the phase of the grinding angle can be coated, for example.
  • Coating material are, for example, ceramic materials which are selected from a group which have abrasion-resistant compounds, in particular having silicate compounds, in particular carbide compounds, in particular silicon carbide compounds, boron carbide compounds,
  • the embodiment according to Figure 2 shows an apparatus for producing a crepe structure 7.
  • This device consists of a creping doctor 5 and a counter-roller 4, which also as a creping roller or in the present example as
  • Press roll can be designated.
  • the positioning of the creping doctor 5 becomes about the angle of incidence ⁇ with, for example, 10 ° to 20 °, in particular 14 ° and the angle of attack ⁇ set with, for example, 20 ° to 30 °.
  • the adjustment of the angle is performed, for example, with the positioning of an adjustable scraper bar.
  • the surface of the counter-roller 4 can also be at least partially coated with a particularly resistant material, similar to the scraper 5.
  • FIG. 3 shows the front part of a paper machine with a wire section 6, in which the first dewatering of a stock suspension takes place through (a) wire (s).
  • the press section 1 the dry content of the previously formed (paper) web is increased with a second mechanical dewatering process.
  • the press section 1 consists for example of a first press 12, here shown with an underfelt, a second press 13 and a third press 14. With the passage of the (paper) web along the arrow 15 through each press nip of the aforementioned presses, the dry content the web gradually increased to 25 - 45%.
  • the creping takes place on the third press 14, to which the apparatus for producing a crepe structure 7 is also attached.
  • This device consists in the present example of a creping blade 5 and a counter-roller 4, which are positioned with angles of attack to each other. From the press section 1, the paper web
  • FIG. 4 shows the course of a paper web 16 through a drying section 8 in which, for example, a slalom felt guide is installed in the first four drying cylinders. Following the drying is also a slalom felt guide
  • the smoothing device 9 has a Yankee cylinder 2 and a volume-pressure system 3, with which the crepe paper web is pressed against the Yankee cylinder 2, on.
  • the volume-saving pressure system 3 in this case has a protective felt 1 1 and a soft roller 10.
  • Table 1 shows an overview of the parameters of crepe paper after
  • One-side smooth white are examples of different basis weights in each case with respect to the paper top (OS) and paper underside (US) with the set machine parameters cylinder pressure Yankee (bar abs.), Contact pressure the pressure roller (KN / m) and cylinder surface temperature (° C) the paper parameters achieved roughness Bendtsen (ml / min) and gloss measurement according to DIN 54502.
  • OS paper top
  • US paper underside
  • KN / m cylinder pressure Yankee
  • ° C cylinder surface temperature
  • DIN 54502. gloss measurement according to DIN 54502.
  • the roughness according to Bendtsen and / or the gloss values according to DIN 54502 are markedly improved in the coffered paper according to the invention compared with the prior art.
  • Table 1 Parameters of crepe paper samples made according to the

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Sanitary Thin Papers (AREA)

Abstract

The invention relates to a method for continuously producing crepe paper, comprising the steps of producing a paper web (16) from a material suspension, mechanically dewatering the paper web (16) in a press section (1), generating a crepe structure in the sheet structure of the paper web (16), and thermally drying the paper web (16). The invention is characterized in that the paper web (16) is applied to a glazing cylinder (2) by means of a bulk-preserving pressing system (3) in order to dry and generate a smooth surface on the paper web (16). A possible advantage of the method according to the invention is that the crepe paper is smooth on one side and can be used for a variety of further application areas as a result of the surface properties that are, for example, modified in this way. Said properties include, for example, the laminatability of the crepe paper, the imprintability of the crepe paper and potential bondability of the crepe paper.

Description

Verfahren zur Herstellung von einseitig glattem Krepppapier  Process for producing one-sided smooth crepe paper
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von einseitig glattem Krepppapier. Zusätzlich betrifft die Erfindung Krepppapier, welches nach dem erfindungsgemäßen Verfahren insbesondere auf einer Papiermaschine hergestellt wurde und die Verwendung des Krepppapiers. Krepppapier ist im Stand der Technik bekannt und wird meist als technisches Papier für die Umwicklung, Isolierung, Beschichtung und als Trägermaterial insbesondere in Dachbahnen, als medizinisches Papier für Dampf- und Gassterilisation, The present invention relates to a process for producing single-sided crepe paper. In addition, the invention relates to crepe paper which has been produced by the process according to the invention, in particular on a paper machine, and to the use of crepe paper. Crepe paper is known in the art and is usually used as a technical paper for wrapping, insulation, coating and as a carrier material in particular in roofing membranes, as a medical paper for steam and gas sterilization,
Dentalkrepppapiere, als Geschenkpapiere, Packkrepppapiere, Krepppapiere für die Textilhülsenproduktion, als Isolationskrepppapier für die Elektroindustrie, Dental paper, as wrapping papers, packing crepe papers, crepe papers for textile sleeve production, as insulation crepe paper for the electrical industry,
Zwischenlagenpapier, Schutzpapier, zum Basteln, Dekorieren, für Papierblumen und dergleichen eingesetzt. Interleaf paper, protective paper, used for crafting, decorating, for paper flowers and the like.
Bei herkömmlichen Kreppverfahren, erfolgt die Kreppung durch Abschaben der Papierbahn von einem geheizten Zylinder, wie beispielsweise von einem Yankee- Zylinder. Entsprechend des Trockengehaltes der Papierbahn wird zwischen In conventional creping processes, creping is accomplished by scraping the paper web from a heated cylinder, such as a Yankee cylinder. According to the dry content of the paper web is between
Nasskrepp- und Trockenkrepp-Verfahren unterschieden. Wet crepe and dry crepe method different.
Nachteile der beidseitigen Kreppung sind beispielsweise im Bereich der Disadvantages of double-sided creping are, for example, in the field of
Weiterverarbeitung zu finden. Aufgrund von großen Oberflächenunebenheiten bei Krepppapieren sind beispielsweise die Eigenschaften hinsichtlich flächiger To find further processing. Due to large surface irregularities in crepe papers, for example, the properties are more flat
Bedruckbarkeit und Verklebbarkeit für Papiere mit beidseitiger Kreppung Printability and bondability for papers with double-sided creping
verbesserungswürdig. improvement.
Aufgabe der vorliegenden Erfindung ist es, die im Stand der Technik bekannten Nachteile wenigstens teilweise zu überwinden. Die vorstehende Aufgabe wird durch ein erfindungsgemäßes Verfahren zur kontinuierlichen Herstellung von Krepppapier gemäß Anspruch 1 und eine Papiermaschine zur Herstellung des Krepppapiers gemäß Anspruch 6 gelöst. Besonders bevorzugte Ausführungsformen sind The object of the present invention is to at least partially overcome the disadvantages known in the prior art. The above object is achieved by an inventive method for the continuous production of crepe paper according to claim 1 and a paper machine for producing the creping paper according to claim 6 solved. Particularly preferred embodiments are
Gegenstand der Unteransprüche. Das erfindungsgemäße Verfahren zur kontinuierlichen Herstellung von Krepppapier umfasst die Schritte der Herstellung einer Papierbahn aus einer Stoffsuspension, der mechanischen Entwässerung der Papierbahn in einer Pressenpartie, der Erzeugung einer Kreppstruktur im Blattgefüge der Papierbahn und der thermischen Trocknung der Papierbahn. Gekennzeichnet ist das erfindungsgemäße Verfahren zur kontinuierlichen Herstellung von Krepppapier durch das Aufbringen der gekreppten Papierbahn auf einen Glättzylinder mittels eines volumenschonenden Subject of the dependent claims. The inventive method for the continuous production of crepe paper comprises the steps of producing a paper web from a stock suspension, mechanical dewatering of the paper web in a press section, the creation of a crepe structure in the sheet structure of the paper web and the thermal drying of the paper web. Characterized the method of the invention for the continuous production of crepe paper by applying the creped paper web to a Yankee cylinder by means of a volume-saving
Anpresssystems zur Trocknung und Erzeugung einer glatten Oberfläche auf der Papierbahn. Pressing system for drying and producing a smooth surface on the paper web.
Unter dem nach dem erfindungsgemäßen Verfahren hergestellten Papier wird ein Krepppapier verstanden, welches eine durch das Kreppen bewirkte Kürzung der Papierbahn erhält und damit insbesondere eine erhöhte Dehnbarkeit sowie The paper produced by the process according to the invention is understood to mean a crepe paper which receives a reduction in the paper web caused by the creping and thus, in particular, an increased ductility and
Rückstellkräfte des Papiers in der (Maschinen) Laufrichtung aufweist. Das gekreppte Papier ist hierdurch u.a. schmiegsamer, kompressibler und unempfindlicher gegen mechanische Belastungen. Das Krepppapier kommt beispielsweise zu Restoring forces of the paper in the (machine) running direction. The creped paper is thereby u.a. smoother, more compressible and less sensitive to mechanical stress. The crepe paper, for example, comes to
Dekorationszwecken (Kreppseiden, Gärtnerkrepp), zu Verpackungsszwecken (Packkrepp), als Zwischenlagenpapier, zu Filtrierzwecken (Kaffeefilter), zu Decorative purposes (crepe silk, gardener crepe), for packaging purposes (packing crepe), as an interleaf paper, for filtering purposes (coffee filter), too
Abdeckarbeiten beim Malen und Lackieren, für die Hygiene (Krepp-Hygienepapier), als Scharnierstoff für Buchrücken, als Abdeckpapier in Dachbahnen, etc. zum Covering for painting and varnishing, for hygiene (crepe tissue paper), as a hinge for book spines, as masking paper in roofing membranes, etc. for
Einsatz. Unter der Herstellung einer Papierbahn aus einer Stoffsuspension im Sinne der vorliegenden Erfindung wird der Verfahrensschritt der Entwässerung mittels Sieb(en) und Blattbildung bei der Papierproduktion verstanden. Die Stoffsuspension wird vorzugsweise über einen Stoffauflauf auf(zwischen) ein umlaufendes Sieb(e) dosiert und entwässert, wodurch sich ein Filterkuchen ausbildet. Beispiele für die Commitment. The production of a paper web from a stock suspension in the context of the present invention is understood to mean the process step of dewatering by means of sieve (s) and sheet formation during paper production. The stock suspension is preferably metered via a headbox onto (between) a rotating sieve (e) and dehydrated, whereby a filter cake is formed. Examples of the
entsprechenden Siebpartien sind Langsiebpartien, Langsiebpartien mit aufgesetztem Decksieb oder Egoutteur, Rundsiebpartien, Rundsiebpartien mit Rundsiebformern, Duoformer, Hybridformer, Kombinationen hiervon und dergleichen. Unter mechanischer Entwässerung der Papierbahn in einer Pressenpartie im Sinne der vorliegenden Erfindung werden alle Arten von Entwässerungen des corresponding Siebpartien are Langsiebpartien, Langsiebpartien with attached deck sieve or Egoutteur, Rundsiebpartien, Rundsiebpartien with Rundsiebformern, Duoformer, Hybridformer, combinations thereof and the like. Under mechanical dewatering of the paper web in a press section in the sense of the present invention, all types of drainage of the
bahnförmigen Filterkuchens mittels Pressverfahren vorzugsweise innerhalb einer Pressenpartie einer Papiermaschine verstanden. Im Pressspalt wird das in der Papierbahn befindliche Wasser durch den zwischen den Walzenpaaren web-shaped filter cake by means of pressing process preferably understood within a press section of a paper machine. In the press nip, the water in the paper web is through the between the pairs of rollers
aufgebrachten Druck herausgepresst. Herkömmliche Presssysteme bei pressed out applied pressure. Conventional pressing systems at
Papiermaschinen sind Legepressen, Saugpressen, gelochte & gerillte Presswalzen, beheizte Presswalzen, Flexitherm- & NipcoFlex-Walzen, befilzt, doppelbefilzt, Schuhpressen, Kombinationen hiervon und dergleichen. Unter Erzeugung einer Kreppstruktur im Blattgefüge der Papierbahn im Sinne der Erfindung wird die Erzeugung von Kreppfalten auf einem Zylinder mittels Paper machines are lay presses, suction presses, perforated & grooved press rolls, heated press rolls, Flexitherm & NipcoFlex rolls, felted, double felted, shoe presses, combinations thereof, and the like. By creating a crepe structure in the sheet structure of the paper web according to the invention, the production of crepe creases on a cylinder by means of
Kreppschaber durch Stauchung der Papierbahn verstanden. Creping doctor understood by compression of the paper web.
In einer weiteren Ausführungsform des erfindungsgemäßen Verfahrens zur kontinuierlichen Herstellung von Krepppapier erfolgt die mechanische Entwässerung mittels wenigstens zwei, vorzugsweise drei Pressspalten, wobei wenigstens eine Walze, insbesondere die dritte und letzte Walze der Pressenpartie als Gegenwalze für einen Kreppschaber dient und auch als Kreppwalze bezeichnet wird. In a further embodiment of the inventive method for the continuous production of crepe paper, the mechanical dewatering by means of at least two, preferably three press nips, wherein at least one roller, in particular the third and last roller of the press section serves as a counter roll for a creping doctor and is also referred to as a creping roller.
Unter einem Pressspalt im Sinne der vorliegenden Erfindung wird der Spalt zwischen zwei Presswalzen verstanden, zwischen welchen die Papierbahn läuft und auf diese eine vorgegebene Linienkraft ausgeübt wird. A press nip in the sense of the present invention is understood to mean the gap between two press rolls, between which the paper web runs and on which a predetermined line force is exerted.
Unter Gegenwalze für einen Kreppschaber im Sinne der vorliegenden Erfindung wird eine Walze verstanden, an der ein Kreppschaber anliegt, welcher die Papierbahn staucht und hierdurch die Kreppung erzeugt. Counter-roll for a creping doctor in the sense of the present invention is understood to mean a roll against which a creping doctor abuts, which upsets the paper web and thereby produces the creping.
In einer weiteren Ausführungsform des erfindungsgemäßen Verfahrens zur kontinuierlichen Herstellung von Krepppapier ist der Trockengehalt der Papierbahn nach der Siebpartie zwischen 16 und 23% und/oder der Trockengehalt vor der Erzeugung der Kreppstruktur zwischen 25 und 45%. In a further embodiment of the method according to the invention for the continuous production of crepe paper, the dry content of the paper web after the wire section is between 16 and 23% and / or the dry content before the production of the crepe structure is between 25 and 45%.
Unter Trockengehalt der Papierbahn im Sinne der vorliegenden Erfindung wird der Trockengehalt von Papier und Zellstoff verstanden. Die Bestimmung erfolgt beispielsweise nach der Norm: BS EN ISO 638 Papier, Pappe und Faserstoff - Bestimmung des Trockengehaltes - Wärmeschrankverfahren. Unter thermischer Trocknung der Papierbahn im Sinne der vorliegenden Erfindung werden Arten der Kontakttrocknung in der Papiermaschine, wie insbesondere Zylindertrocknung verstanden. Beispielsweise können auch weitere Dry content of the paper web in the context of the present invention is understood as meaning the dry content of paper and pulp. The determination is carried out, for example, in accordance with the standard: BS EN ISO 638 Paper, board and pulp - Determination of dry content - Heating cabinet method. Thermal drying of the paper web in the sense of the present invention is understood as meaning types of contact drying in the paper machine, in particular cylinder drying. For example, other
Trocknungsarten, wie Strahlungs- oder Konvektionstrocknung zum Einsatz kommen. Unter Glättzylinder im Sinne der vorliegenden Erfindung werden beheizte Zylinder mit einem großen Durchmesser und einer glatten Oberfläche, wie beispielsweise ein Yankee-Zylinder verstanden. Drying methods, such as radiation or convection drying are used. For the purposes of the present invention, Yankee cylinders are understood to mean heated cylinders with a large diameter and a smooth surface, such as, for example, a Yankee cylinder.
In einer weiteren Ausführungsform des erfindungsgemäßen Verfahrens zur kontinuierlichen Herstellung von Krepppapier ist der Trockengehalt der Papierbahn vor der Aufbringung auf einen Glättzylinder im Bereich zwischen 50 und 80%, vorzugsweise zwischen 60 und 75% und insbesondere im Bereich von 65 und 70%. In a further embodiment of the inventive method for the continuous production of crepe paper, the dry content of the paper web before application to a Yankee cylinder is in the range between 50 and 80%, preferably between 60 and 75% and in particular in the range of 65 and 70%.
Entsprechend der vorliegenden Erfindung wird die gekreppte Papierbahn auf einen Glättzylinder aufgebracht, wobei dies unter Verwendung eines volumenschonenden Anpresssystems erfolgt. Unter einem volumenschonenden Anpresssystem wird dabei ein Anpresssystem verstanden, welches die Kreppung des Krepppapiers im Wesentlichen nicht zerstört und das Volumen des Krepppapiers in einem According to the present invention, the creped paper web is applied to a Yankee cylinder using a volume-gentle nip system. A volume-protecting pressure system is understood to mean a pressure system which does not essentially destroy the creping of the crepe paper and the volume of the crepe paper in one
vorgegebenen Umfang erhält. Dies wird beispielsweise durch die Kombination einer weichen Anpresswalze mit einem Velin-Filz im Pressspalt zwischen Anpresswalze und Yankee-Zylinder erreicht. Ein Beispiel für die Anordnung eines solchen given scope. This is achieved for example by the combination of a soft pressure roller with a Velin felt in the press nip between the pressure roller and Yankee cylinder. An example of the arrangement of such
Anpresssystems ist auch eine Deutsche Presse, bzw. eine entsprechende Anpresssystems is also a German press, or a corresponding
Modifikation hiervon. Bei Mustern des erfindungsgemäßen Krepppapiers wurden beispielsweise Glättewerte im Bereich von 20 bis 1500ml/min vorzugsweise von 100 bis 1200ml/min und insbesondere im Bereich von 500 bis 900ml/min nach Bendtsen gemessen. Glanzwerte gemessen gemäß DIN 54502 mit einem Einfallwinkel von 85 Grad wurden bei Mustern des erfindungsgemäßen Krepppapiers beispielsweise im Bereich von 0 bis 25 vorzugsweise von 1 bis 23 und insbesondere im Bereich von 6 bis 22 gemessen.  Modification thereof. For samples of crepe paper according to the invention, for example, smoothness values in the range from 20 to 1500 ml / min, preferably from 100 to 1200 ml / min and in particular in the range from 500 to 900 ml / min according to Bendtsen, were measured. Gloss values measured according to DIN 54502 with an angle of incidence of 85 degrees were measured in samples of the crepe paper according to the invention, for example in the range from 0 to 25, preferably from 1 to 23 and in particular in the range from 6 to 22.
Unter Glanz der Papierbahn im Sinne der vorliegenden Erfindung wird der Glanz von Krepppapier als ein optischer Eindruck, den man bei der Betrachtung der Oberfläche wahrnimmt verstanden. Die Bestimmung erfolgt beispielsweise nach der Norm: DIN 54502. In einer weiteren Ausführungsform des erfindungsgemäßen Verfahrens zur kontinuierlichen Herstellung von Krepppapier weist die Kreppstruktur einen Gloss of the paper web in the sense of the present invention is understood to mean the gloss of crepe paper as an optical impression perceived when viewing the surface. The determination is carried out, for example, according to the standard: DIN 54502. In a further embodiment of the method according to the invention for the continuous production of crepe paper, the crepe structure has a
Kreppfaktor im Bereich von 1 bis 20% auf und insbesondere die Faserorientierung in der Papierbahn ein Längs-/ Querverhältnis im Bereich von 1 :1 bis 1 :2,5 auf. Unter Kreppfaktor der Kreppstruktur im Sinne der vorliegenden Erfindung wird das prozentuale Verhältnis zwischen der ungekreppten und der gekreppten Papierbahn verstanden, wobei durch das Kreppen insbesondere eine Kürzung der Papierbahn bewirkt wird. Creping factor in the range of 1 to 20% and in particular the fiber orientation in the paper web, a longitudinal / transverse ratio in the range of 1: 1 to 1: 2.5. Under creping of the creping structure in the context of the present invention, the percentage ratio between the uncreped and the creped paper web is understood, in particular by the creping a reduction of the paper web is effected.
Unter Faserorientierung im Sinne der vorliegenden Erfindung wird das Verhältnis zwischen der Faserorientierung längs zur Faserorientierung und quer der Under fiber orientation in the context of the present invention, the ratio between the fiber orientation along the fiber orientation and across the
Papiermaschine verstanden. Die Faserorientierung wird beim Blattbildungsprozess in der Papiermaschine festgelegt und kann beispielsweise mit Bildanalyseverfahren, Laser-Streuungsmethoden, etc. ermittelt werden.  Paper machine understood. The fiber orientation is determined in the sheet forming process in the paper machine and can be determined, for example, with image analysis methods, laser scattering methods, etc.
In einer weiteren Ausführungsform des erfindungsgemäßen Verfahrens zur kontinuierlichen Herstellung von Krepppapier weist der Kreppschaber einen In a further embodiment of the method according to the invention for the continuous production of crepe paper, the creping doctor has a
Schleifwinkel α im Bereich von 0,5° bis 10°, insbesondere zwischen 3° bis 8° und/oder einen Anstellwinkel γ von 20° bis 30° und/oder einen Anstellwinkel ß zwischen 5° bis 20° auf, insbesondere von ca. 14° auf. Abrasion angle α in the range of 0.5 ° to 10 °, in particular between 3 ° to 8 ° and / or an angle of attack γ of 20 ° to 30 ° and / or an angle β between 5 ° to 20 °, in particular of about 14 ° up.
Unter Schleifwinkel α (Alpha) im Sinne der vorliegenden Erfindung wird der Winkel der angeschliffenen Kreppschaberkante verstanden. For the purposes of the present invention, grinding angle α (alpha) is understood to be the angle of the ground creping edge.
Unter dem Anstellwinkel γ (Gamma) im Sinne der vorliegenden Erfindung wird der Winkel des Kreppschabers zur Gegenwalze verstanden. For the purposes of the present invention, the angle of incidence γ (gamma) is understood to mean the angle of the creping doctor to the counter-roller.
Unter dem Anstellwinkel ß (Beta) im Sinne der vorliegenden Erfindung wird der Auftreffwinkel des Kreppschabers zur vertikalen Achse der Gegenwalze verstanden. Die Aufgabe der vorliegenden Erfindung wird ferner auch mit einer Papiermaschine zur Herstellung eines Krepppapiers gelöst. Diese weist wenigstens einen For the purposes of the present invention, the angle of attack β (beta) is understood to mean the angle of incidence of the creping doctor relative to the vertical axis of the counter-roller. The object of the present invention is also achieved with a paper machine for producing a crepe paper. This has at least one
Stoffauflauf, eine Siebpartie zur Erzeugung einer Papierbahn aus einer Headbox, a wire section for producing a paper web from a
Stoffsuspension, eine Pressenpartie zur mechanischen Entwässerung, eine Stock suspension, a press section for mechanical drainage, a
Vorrichtung zur Erzeugung einer Kreppstruktur in der Papierbahn, eine Trockenpartie zur thermischen Entwässerung der Papierbahn und eine Glätteinrichtung auf. Die Glätteinrichtung weist wenigstens einen Glättzylinder auf, welcher mit einem Device for producing a crepe structure in the paper web, a drying section for thermal dewatering of the paper web and a smoothing device. The Smoothing device has at least one Yankee cylinder, which with a
Anpresssystem die gekreppte Papierbahn mit einer Softwalze und/oder einem Schonfilz auf den Glättzylinder zur Erzeugung einer glatten Oberfläche aufbringt. Pressing the creped paper web with a soft roller and / or a soft felt on the Yankee cylinder to produce a smooth surface.
Unter Softwalze im Sinne der vorliegenden Erfindung wird eine Walze mit einem weichem Bezug im Bereich von 10 bis 30 Pusey & Jhone verstanden. For the purposes of the present invention, a soft roller is understood to mean a roller with a soft cover in the range from 10 to 30 Pusey & Jhone.
Unter Schonfilz im Sinne der vorliegenden Erfindung wird ein Filz verstanden, welcher insbesondere die Krepppapierbahn bezüglich des papierspezifischen Volumens bzw. der Kreppstruktur schont. Hierzu wird beispielsweise ein Velin-Filz eingesetzt, in den aufgrund seiner Kompressibilität die eine Seite der For the purposes of the present invention, the term "felted felt" is understood to mean a felt which, in particular, protects the crepe paper web with regard to the paper-specific volume or the creping structure. For this example, a vellum felt is used in the one side of the due to its compressibility
Krepppapierbahn im Pressnip hinein gedrückt werden kann und somit die Crepe paper web can be pressed in the press nip and thus the
Krepppapierbahn von der Druckeinwirkung im Pressspalt geschont wird. Der Crepe paper web is spared from the pressure in the press nip. Of the
Schonfilz kann gemäß einer weiteren bevorzugten Ausführungsform auch eine Rippung oder andere Oberflächenstruktur aufweisen, um dem Krepppapier eine weitere insbesondere sichtbare Struktur oder Markierung zu geben. In einer weiteren Ausführungsform der erfindungsgemäßen Papiermaschine sind wenigstens eine weitere thermische Trocknungseinrichtung, und/oder eine Schonfilz may according to another preferred embodiment also have a ribbing or other surface structure to give the crepe paper another particular visible structure or marking. In a further embodiment of the paper machine according to the invention, at least one further thermal drying device, and / or one
Leimpresse, und/oder ein Glättwerk, und/oder eine Aufrollung vorgesehen. Size press, and / or a calender, and / or a reel provided.
Unter einer weiteren thermische Trocknungseinrichtung im Sinne der vorliegenden Erfindung wird beispielsweise eine Nachtrockenpartie verstanden. Unter Leimpresse im Sinne der vorliegenden Erfindung wird ein Walzenauftragswerk beispielsweise für den Auftrag von Trockenverfestigungsadditiven verstanden. A further thermal drying device in the sense of the present invention is understood as meaning, for example, an after-dryer section. For the purposes of the present invention, a size press is understood to mean, for example, a roll applicator for the application of dry strength additives.
Unter Glättwerk im Sinne der vorliegenden Erfindung wird beispielsweise ein Under calender in the context of the present invention, for example, a
Walzenglättwerk verstanden. Roll calender understood.
Unter Aufrollung im Sinne der vorliegenden Erfindung wird eine Vorrichtung zum Aufrollen der fertig produzierten Papierbahn, wie beispielsweise eine Poperoller- Aufrollung verstanden. Under Aufrollung in the context of the present invention, a device for rolling up the finished produced paper web, such as a Poperoller- reeling understood.
In einer weiteren Ausführungsform der erfindungsgemäßen Papiermaschine weist die Pressenpartie eine 1 . Presse, insbesondere mit einer Linienkraft im Bereich von 0 bis 10kN/m zur Erzeugung eines Trockengehalts in der Papierbahn im Bereich von 25 bis 30%, eine 2. Presse, insbesondere mit einer Linienkraft im Bereich von 35 bis 45kN/m zur Erzeugung eines Trockengehalts in der Papierbahn im Bereich von 27 bis 38% und vorzugsweise eine 3. Presse, insbesondere bei einer Linienkraft im Bereich von 45 bis 55kN/m zur Erzeugung eines Trockengehaltes in der Papierbahn im Bereich von 25 bis 45% auf. Unter Linienkraft im Sinne der vorliegenden Erfindung wird die Kraft verstanden, welche auf die Linie im Pressspalt ausgeübt wird. In a further embodiment of the paper machine according to the invention, the press section has a 1. Press, in particular with a line force in the range of 0 to 10 kN / m for producing a dry content in the paper web in the range of 25 to 30%, a second press, in particular with a line force in the range of 35 to 45 kN / m for producing a dry content in the paper web in the range of 27 to 38% and preferably a third press, in particular at a line force in the range of 45 to 55 kN / m to produce a dry content in the paper web in the range of 25 to 45% on. Line force in the sense of the present invention is understood to mean the force which is exerted on the line in the press nip.
In einer weiteren Ausführungsform der erfindungsgemäßen Papiermaschine ist wenigstens eine Walze der Pressenpartie als Kreppwalze insbesondere mit einer veredelten Oberfläche ausgebildet. Beispiele für Materialien, aus welchen diese veredelten Oberflächen wenigstens teilweise hergestellt sind, sind Wolframcarbid- Verbindungen, insbesondere Di-Wolframcarbid, Wolframmonocarbid und In a further embodiment of the paper machine according to the invention, at least one roller of the press section is designed as a creping roller, in particular with a finished surface. Examples of materials from which these finished surfaces are at least partially made are tungsten carbide compounds, in particular di-tungsten carbide, tungsten monocarbide and
Wolframschmelzcarbid, Kombinationen hiervon und dergleichen. Tungsten carbide, combinations thereof, and the like.
In einer weiteren Ausführungsform der erfindungsgemäßen Papiermaschine wird für die Erzeugung der Kreppstruktur ein Kreppschaber verwendet wird, welcher insbesondere eine keramisch beschichtete Schaberkante aufweist. In a further embodiment of the paper machine according to the invention, a creping doctor is used for the production of the creping structure, which has in particular a ceramic coated scraper edge.
In einer weiteren Ausführungsform der erfindungsgemäßen Papiermaschine weist der Kreppschaber einen Schleifwinkel α (Alpha) im Bereich von 0,5° bis 10, insbesondere zwischen 3° bis 8° und/oder der Anstellwinkel γ (Gamma) von 20° bis 30° und/oder der Anstellwinkel ß (Beta) zwischen 5° bis 20°, insbesondere von ca. 14° auf. In a further embodiment of the paper machine according to the invention, the creping doctor has a grinding angle α (alpha) in the range of 0.5 ° to 10, in particular between 3 ° to 8 ° and / or the setting angle γ (gamma) of 20 ° to 30 ° and / or the angle β (beta) between 5 ° to 20 °, in particular of about 14 °.
In einer weiteren Ausführungsform der erfindungsgemäßen Papiermaschine weist die Papiermaschine vor der Aufbringung des erfindungsgemäßen Krepppapiers auf einen Glättzylinder eine Vortrocknung insbesondere eine Zylindertrocknung zur Erzeugung eines Trockengehaltes der erfindungsgemäßen Krepppapierbahn im Bereich zwischen 50 und 80%, vorzugsweise zwischen 60 und 75% und In a further embodiment of the paper machine according to the invention, the paper machine before the application of crepe paper according to the invention on a Yankee predrying particular cylinder drying to produce a dry content of crepe paper web according to the invention in the range between 50 and 80%, preferably between 60 and 75% and
insbesondere im Bereich von 65 und 70% auf. especially in the range of 65 and 70%.
Unter Zylindertrocknung im Sinne der vorliegenden Erfindung werden beheizte Trockenzylinder verstanden, welche in einer Papiermaschine zur Trocknung der Papierbahn eingesetzt werden. In einer weiteren Ausführungsform der erfindungsgemäßen Papiermaschine ist die Softwalze Bestandteil einer Deutsche Presse, welche die Papierbahn an den Cylinder drying in the context of the present invention is understood to mean heated drying cylinders which are used in a paper machine for drying the paper web. In a further embodiment of the paper machine according to the invention the software roll is part of a German press, which the paper web to the
Glättzylinder, insbesondere den Yankee-Zylinder, aufbringt. Ferner wird Smoothing cylinder, in particular the Yankee cylinder, applies. Furthermore, will
insbesondere ein Schonfilz wie beispielsweise ein Velin-Filz verwendet, wobei vorzugsweise die Linienkraft zwischen Presse und Zylinder im Bereich von 5 bis 20kN/m liegt. in particular a Schonfilz such as a vellum felt used, wherein preferably the line force between the press and cylinder in the range of 5 to 20kN / m.
Des weiteren umfasst das erfindungsgemäße Verfahren zur kontinuierlichen Furthermore, the inventive method comprises the continuous
Herstellung von Krepppapier auch das nach diesem Verfahren hergestellte Production of crepe paper also produced by this method
Kernpapier, welches vorzugsweise auf einer erfindungsgemäßen Papiermaschine hergestellt wurde. Core paper, which was preferably produced on a paper machine according to the invention.
Die vorliegende Erfindung umfasst ferner auch die Verwendung des Krepppapiers als technisches Papier für die Umwicklung, Isolierung, Beschichtung und als The present invention also includes the use of the crepe paper as a technical paper for wrapping, insulation, coating and as
Trägermaterial insbesondere in Dachbahnen, als Medizinische Papiere für Dampfund Gassterilisation, Dental krepppapiere, als Geschenkpapiere, Packkrepppapiere, Krepppapiere für die Textilhülsenproduktion, als Isolationskrepppapier für die Carrier material, in particular in roofing membranes, as medical papers for steam and gas sterilization, dental crepe papers, as gift papers, packing crepe papers, crepe papers for textile sleeve production, as insulation crepe paper for the
Elektroindustrie, zur Kaschierung von Papier, Pappe und Karton, als farbige Papiere, als nassfeste Papiere, als hydrophobe Papiere, Sicherheitspapiere, für  Electrical industry, for the lamination of paper, cardboard and cardboard, as colored papers, as wet - strength papers, as hydrophobic papers, security papers, for
Verpackungen, zum Basteln, Dekorieren, für Papierblumen und dergleichen. Packaging, for crafting, decorating, for paper flowers and the like.
Ein Vorteil des erfindungsgemäßen Verfahrens zur Herstellung von Krepppapier ist, dass das Krepppapier einseitig glatt ist und mit den beispielsweise dadurch veränderten Oberflächeneigenschaften für eine Vielzahl weiterer An advantage of the method according to the invention for the production of crepe paper is that the crepe paper is smooth on one side and with the surface properties which are changed thereby, for example, for a multiplicity of others
Anwendungsbereiche einsetzbar ist. Solche sind beispielsweise die Kaschierbarkeit des Krepppapiers, die Beschichtungsmöglichkeit, insbesondere die Fields of application can be used. Such are, for example, the Kaschierbarkeit the crepe paper, the coating option, in particular the
Walzenbeschichtung, die Bedruckbarkeit des Krepppapiers und eine mögliche Verklebbarkeit des Krepppapiers. Roll coating, the printability of the crepe paper and a possible adhesiveness of the crepe paper.
Ein Vorteil des erfindungsgemäßen Verfahrens ist die Erzeugung von An advantage of the method according to the invention is the generation of
Glanzeigenschaften als ein optischer Eindruck von Krepppapier, den man bei der Betrachtung der Oberfläche wahrnimmt. Gloss properties as an optical impression of crepe paper, which one perceives when looking at the surface.
Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels erläutert, wobei darauf hingewiesen wird, dass durch dieses Beispiel Abwandlungen beziehungsweise Ergänzungen wie sie sich für den Fachmann unmittelbar ergeben mit umfasst sind. Darüber hinaus stellt dieses bevorzugte Ausführungsbeispiel keine Beschränkung der Erfindung in der Art dar, dass Abwandlungen und Ergänzungen im Umfang der vorliegenden Erfindung liegen. The invention will be explained below with reference to a preferred embodiment, wherein it should be noted that by this example modifications or additions as they arise for the skilled person directly are included. Moreover, this preferred embodiment does not limit the invention to the nature that modifications and additions are within the scope of the present invention.
Dabei zeigen: Fig. 1 eine schematische Zeichnung der im erfindungsgemäßen Verfahren 1 shows a schematic drawing of the method according to the invention
eingesetzten Kreppschaberklinge; inserted creping blade;
Fig. 2 eine schematische Zeichnung der im erfindungsgemäßen Verfahren zum Einsatz kommenden Vorrichtung zur Erzeugung einer Kreppstruktur und der FIG. 2 is a schematic drawing of the apparatus used in the method according to the invention for producing a creping structure and FIG
Positionierung des Kreppschabers zur Gegenwalze; Fig. 3 eine schematische Zeichnung der im erfindungsgemäßen Verfahren Positioning the creping doctor to the counter roller; Fig. 3 is a schematic drawing of the method according to the invention
eingesetzten vorderen Teils einer Papiermaschine; inserted front part of a paper machine;
Fig. 4 eine schematische Zeichnung der thermischen Trocknung mit einem Fig. 4 is a schematic drawing of the thermal drying with a
Glättzylinder. Yankee cylinder.
Das Ausführungsbeispiel gemäß Figur 1 zeigt einen Kreppschaber 5 mit einer Schaberkante 17, einem Schleifwinkel α beispielsweise zwischen 3° und 8°, einer Dicke a zwischen 0,6 bis 1 mm und einer Länge b zwischen 70 bis 75 cm. Die Phase des Schleifwinkels kann beispielsweise beschichtet sein. Als abriebfester The embodiment of Figure 1 shows a creping blade 5 with a scraper edge 17, a grinding angle α, for example, between 3 ° and 8 °, a thickness a between 0.6 to 1 mm and a length b between 70 to 75 cm. The phase of the grinding angle can be coated, for example. As abrasion resistant
Beschichtungsstoff eignen sich beispielsweise keramische Werkstoffe, die aus einer Gruppe ausgewählt werden, welche abriebfeste Verbindungen aufweisen, die insbesondere Silicat-Verbindungen aufweist, die insbesondere Carbid-Verbindungen, die insbesondere Siliciumcarbid-Verbindungen, Borcarbid-Verbindungen, Coating material are, for example, ceramic materials which are selected from a group which have abrasion-resistant compounds, in particular having silicate compounds, in particular carbide compounds, in particular silicon carbide compounds, boron carbide compounds,
Aluminiumoxid-Verbindungen, Berylliumoxid-Verbindungen, Zirkonoxid- Verbindungen, Bornitrid-Verbindungen, Kaolinit-Verbindungen, Illit-Verbindungen, Montmorillonit-Verbindungen, Quarz-Verbindungen, Feldspat-Verbindungen, Alumina compounds, beryllium oxide compounds, zirconium oxide compounds, boron nitride compounds, kaolinite compounds, illite compounds, montmorillonite compounds, quartz compounds, feldspar compounds,
Glimmer-Verbindungen, Kalk-Verbindungen, Kombinationen hiervon und dergleichen aufweist. Mica compounds, lime compounds, combinations thereof, and the like.
Das Ausführungsbeispiel gemäß Figur 2 zeigt eine Vorrichtung zur Erzeugung einer Kreppstruktur 7. Diese Vorrichtung besteht aus einem Kreppschaber 5 und einer Gegenwalze 4, die auch als Kreppwalze oder im vorliegenden Beispiel als The embodiment according to Figure 2 shows an apparatus for producing a crepe structure 7. This device consists of a creping doctor 5 and a counter-roller 4, which also as a creping roller or in the present example as
Presswalze bezeichnet werden kann. Die Positionierung des Kreppschabers 5 wird über den Anstellwinkel ß mit beispielsweise 10° bis 20°, insbesondere 14° und den Anstellwinkel γ mit beispielsweise 20° bis 30° eingestellt. Die Einstellung der Winkel wird beispielsweise mit der Positionierung eines verstellbaren Schaberbalkens durchgeführt. Um dauerhaft der mechanischen Belastung durch den Schaber 5 stand zu halten, kann ferner die Oberfläche der Gegenwalze 4 auch mit einem besonders widerstandsfähigem Material - ähnlich wie der Schaber 5 - wenigstens teilweise beschichtet sein. Press roll can be designated. The positioning of the creping doctor 5 becomes about the angle of incidence β with, for example, 10 ° to 20 °, in particular 14 ° and the angle of attack γ set with, for example, 20 ° to 30 °. The adjustment of the angle is performed, for example, with the positioning of an adjustable scraper bar. In order to permanently withstand the mechanical load by the scraper 5, furthermore, the surface of the counter-roller 4 can also be at least partially coated with a particularly resistant material, similar to the scraper 5.
Die Darstellung gemäß Figur 3 zeigt den vorderen Teil einer Papiermaschine mit einer Siebpartie 6, in der die erste Entwässerung einer Stoffsuspension durch (ein) Sieb(e) erfolgt. In der Pressenpartie 1 wird der Trockengehalt der zuvor gebildete (Papier)bahn mit einem zweiten mechanischen Entwässerungsvorgang erhöht. Die Pressenpartie 1 besteht beispielsweise aus einer ersten Presse 12, hier mit einem Unterfilz dargestellt, einer zweiten Presse 13 und einer dritten Presse 14. Mit dem Durchlaufen der (Papier)bahn entlang dem Pfeil 15 durch jeden einzelnen Pressspalt der zuvor genannten Pressen wird der Trockengehalt der Papierbahn schrittweise bis auf 25 - 45% gesteigert. Im vorliegenden Ausführungsbeispiel erfolgt die Kreppung an der dritten Presse 14, an welcher sich auch die Vorrichtung zur Erzeugung einer Kreppstruktur 7 angebracht ist. Diese Vorrichtung besteht im vorliegenden Beispiel aus einem Kreppschaber 5 und einer Gegenwalze 4, die mit Anstellwinkeln zueinander positioniert sind. Von der Pressenpartie 1 wird die Papierbahn The illustration according to FIG. 3 shows the front part of a paper machine with a wire section 6, in which the first dewatering of a stock suspension takes place through (a) wire (s). In the press section 1, the dry content of the previously formed (paper) web is increased with a second mechanical dewatering process. The press section 1 consists for example of a first press 12, here shown with an underfelt, a second press 13 and a third press 14. With the passage of the (paper) web along the arrow 15 through each press nip of the aforementioned presses, the dry content the web gradually increased to 25 - 45%. In the present embodiment, the creping takes place on the third press 14, to which the apparatus for producing a crepe structure 7 is also attached. This device consists in the present example of a creping blade 5 and a counter-roller 4, which are positioned with angles of attack to each other. From the press section 1, the paper web
beispielsweise in die Trockenpartie 8 der Figur 4 überführt. for example, transferred to the drying section 8 of Figure 4.
Die Darstellung gemäß Figur 4 zeigt den Verlauf einer Papierbahn 16 durch eine Trockenpartie 8 bei der beispielsweise in den ersten vier Trockenzylindern eine Slalomfilzführung installiert ist. Im Anschluss an die Trocknung ist ferner eine The illustration according to FIG. 4 shows the course of a paper web 16 through a drying section 8 in which, for example, a slalom felt guide is installed in the first four drying cylinders. Following the drying is also a
Glätteinrichtung angeordnet. Die Glätteinrichtung 9 weist einen Glättzylinder 2 und ein volumenschonendes Anpresssystem 3, mit welchem die Krepppapierbahn an den Glättzylinder 2 gepresst wird, auf. Das volumenschonende Anpresssystem 3 weist hierbei einen Schonfilz 1 1 und eine Softwalze 10 auf. Smoothing arranged. The smoothing device 9 has a Yankee cylinder 2 and a volume-pressure system 3, with which the crepe paper web is pressed against the Yankee cylinder 2, on. The volume-saving pressure system 3 in this case has a protective felt 1 1 and a soft roller 10.
Tabelle 1 zeigt eine Übersicht der Parameter von Krepppapier nach dem Table 1 shows an overview of the parameters of crepe paper after
erfindungsgemäßen Verfahren. Für die Papiersorte einseitig glatt Weiß (einseitig glatt Weiß = eglt. Weiß) sind beispielhaft für unterschiedliche Flächengewichte jeweils bezüglich der Papier-Oberseite (OS) und Papier-Unterseite (US) mit den eingestellten Maschinenparametern Zylinderdruck Yankee (bar abs.), Anpressdruck der Anpresswalze (KN/m) und Zylinderoberflächentemperatur (°C) die erzielten Papierparameter Rauhigkeit nach Bendtsen (ml/min) und Glanzmessung nach DIN 54502 dargestellt. Bei dem erfindungsgemäßen Kepppapier sind beispielsweise die Rauhigkeit nach Bendtsen und/oder die Glanzwerte nach DIN 54502 gegenüber dem Stand der Technik deutlich verbessert. inventive method. One-side smooth white (one-sided smooth white = eglt. White) are examples of different basis weights in each case with respect to the paper top (OS) and paper underside (US) with the set machine parameters cylinder pressure Yankee (bar abs.), Contact pressure the pressure roller (KN / m) and cylinder surface temperature (° C) the paper parameters achieved roughness Bendtsen (ml / min) and gloss measurement according to DIN 54502. For example, the roughness according to Bendtsen and / or the gloss values according to DIN 54502 are markedly improved in the coffered paper according to the invention compared with the prior art.
Tabelle 1 : Parameter von Krepppapiermustern hergestellt nach dem  Table 1: Parameters of crepe paper samples made according to the
erfindungsgemäßen Verfahren.  inventive method.

Claims

Patentansprüche claims
1 . Verfahren zur kontinuierlichen Herstellung von Krepppapier mit den Schritten 1 . Process for the continuous production of crepe paper with the steps
- Herstellung einer Papierbahn (16) aus einer Stoffsuspension; - Production of a paper web (16) from a stock suspension;
- mechanische Entwässerung der Papierbahn (16) in einer Pressenpartie- Mechanical dewatering of the paper web (16) in a press section
(1 ); (1 );
- Erzeugung einer Kreppstruktur im Blattgefüge der Papierbahn (16); - Creation of a crepe structure in the sheet structure of the paper web (16);
- Thermische Trocknung der Papierbahn (16); gekennzeichnet durch das Aufbringen der Papierbahn (16) auf einen Glättzylinder (2) mittels eines volumenschonenden Anpresssystems (3), zur Trocknung und Erzeugung einer glatten Oberfläche auf der Papierbahn (16). - Thermal drying of the paper web (16); characterized by the application of the paper web (16) on a Yankee cylinder (2) by means of a volume-gentle pressing system (3), for drying and producing a smooth surface on the paper web (16).
2. Verfahren zur Herstellung eines Krepppapiers gemäß Anspruch 1 dadurch gekennzeichnet, dass die mechanische Entwässerung mittels wenigstens zwei, vorzugsweise drei Pressspalten erfolgt und wenigstens eine Walze der Pressenpartie als Gegenwalze (4) für einen Kreppschaber (5) dient. 2. A method for producing a crepe paper according to claim 1, characterized in that the mechanical dewatering takes place by means of at least two, preferably three press nips and at least one roller of the press section serves as a counter roll (4) for a creping doctor (5).
3. Verfahren zur Herstellung eines Krepppapiers gemäß Anspruch 1 oder 2 dadurch gekennzeichnet, dass der Trockengehalt der Papierbahn (16) nach der Siebpartie (6) zwischen 16 und 23% liegt und/oder der Trockengehalt vor der Erzeugung der 3. A method for producing a crepe paper according to claim 1 or 2, characterized in that the dry content of the paper web (16) after the wire section (6) between 16 and 23% and / or the dry content before the production of
Kreppstruktur zwischen 25 und 45% liegt. Crepe structure is between 25 and 45%.
4. Verfahren zur Herstellung eines Krepppapiers gemäß einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass die Kreppstruktur einen Faktor im Bereich von 1 bis 20% aufweist und insbesondere die Faserorientierung in der Papierbahn (16) ein Längs-/ Querverhältnis im Bereich von 1 :1 bis 1 :2,5 aufweist. 4. A method for producing a crepe paper according to one of the preceding claims, characterized in that the creping structure has a factor in the range of 1 to 20% and in particular the fiber orientation in the paper web (16) has a longitudinal / transverse ratio in the range of 1: 1 to 1: 2.5.
5. Verfahren zur Herstellung eines Krepppapiers gemäß einem der vorstehenden Ansprüche dadurch gekennzeichnet, dass der Kreppschaber (5) einen Schleifwinkel α im Bereich von 0,5° bis 10°, insbesondere zwischen 3° bis 8° und/oder der Anstellwinkel γ von 20° bis 30° und/oder der Anstellwinkel ß zwischen 5° bis 20° ist, insbesondere von ca. 14° einnimmt. 5. A method for producing a crepe paper according to one of the preceding claims, characterized in that the creping doctor (5) has a grinding angle α in the range of 0.5 ° to 10 °, in particular between 3 ° to 8 ° and / or the angle of attack γ of 20 ° to 30 ° and / or the angle of attack ß between 5 ° to 20 °, in particular of about 14 ° occupies.
6. Papiermaschine zur Herstellung eines Krepppapiers mit wenigstens einem Stoffauflauf, einer Siebpartie (6) zur Erzeugung einer Papierbahn (16) aus einer Stoffsuspension, einer Pressenpartie (1 ) zur mechanischen 6. Paper machine for producing a crepe paper with at least one headbox, a wire section (6) for producing a paper web (16) from a stock suspension, a press section (1) for mechanical
Entwässerung, einer Vorrichtung (7) zur Erzeugung einer Kreppstruktur in der Papierbahn (16), einer Trockenpartie (8) zur thermischen Entwässerung der Papierbahn (16), einem Anpresssystem (3) und einer Glätteinrichtung (9) mit wenigstens einem Glättzylinder (2) dadurch gekennzeichnet, dass das Anpresssystem (3) die gekreppte Papierbahn (16) mit einer Softwalze (10) und/oder einem Schonfilz (1 1 ) auf den Glättzylinder (2) zur Erzeugung einer glatten Oberfläche aufbringt.  Dewatering, a device (7) for producing a crepe structure in the paper web (16), a dryer section (8) for thermal dewatering of the paper web (16), a pressure system (3) and a smoothing device (9) with at least one Yankee cylinder (2) characterized in that the pressing system (3) applying the creped paper web (16) with a soft roller (10) and / or a protective felt (1 1) on the Yankee cylinder (2) to produce a smooth surface.
7. Papiermaschine gemäß Anspruch 6, dadurch gekennzeichnet, dass wenigstens eine weitere thermische Trocknungseinrichtung, eine Leimpresse, ein Glättwerk, eine Aufrollung vorgesehen sind. 7. Paper machine according to claim 6, characterized in that at least one further thermal drying device, a size press, a calender, a reel are provided.
8. Papiernnaschine gemäß Anspruch 6 oder 7, dadurch gekennzeichnet, dass die Pressenpartie eine 1 . Presse (12), insbesondere mit einer Linienkraft im Bereich von 0 bis 10kN/m zur Erzeugung eines Trockengehalts im Bereich von 25 bis 30%, eine 2. Presse (13), insbesondere mit einer Linienkraft im Bereich von 35 bis 45kN/m zur Erzeugung eines Trockengehalts im Bereich von 27 bis 38% und vorzugsweise eine 3. Presse (14), insbesondere bei einer Linienkraft im Bereich von 45 bis 55kN/m zur Erzeugung eines 8. paper machine according to claim 6 or 7, characterized in that the press section a 1. Press (12), in particular with a line power in the range of 0 to 10 kN / m for producing a dry content in the range of 25 to 30%, a second press (13), in particular with a line force in the range of 35 to 45kN / m Producing a dry content in the range of 27 to 38% and preferably a third press (14), in particular at a line force in the range of 45 to 55kN / m to produce a
Trockengehaltes im Bereich von 25 bis 45% aufweist.  Dry content in the range of 25 to 45%.
9. Papiermaschine gemäß wenigstens einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, dass wenigstens eine Walze der Pressenpartie als Kreppwalze (4) ausgebildet ist und insbesondere mit einer Oberfläche veredelt ist, die aus einer Gruppe ausgewählt wird, welche Wolframcarbid-Verbindungen aufweist, die Paper machine according to at least one of claims 6 to 8, characterized in that at least one roller of the press section is formed as a creping roller (4) and is in particular finished with a surface selected from a group comprising tungsten carbide compounds which
insbesondere Di-Wolframcarbid, Wolframmonocarbid und  in particular di-tungsten carbide, tungsten monocarbide and
Wolframschmelzcarbid, Kombinationen hiervon und dergleichen aufweist.  Tungsten carbide, combinations thereof, and the like.
10. Papiermaschine gemäß wenigstens einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, dass für die Erzeugung der Kreppstruktur ein Kreppschaber (5) verwendet wird, welcher insbesondere eine keramisch beschichtete Schaberkante (17) aufweist. 10. Paper machine according to at least one of claims 6 to 9, characterized in that for the production of the crepe structure, a creping doctor (5) is used, which in particular has a ceramic-coated scraper edge (17).
1 1 . Papiermaschine gemäß Anspruch 10, dadurch gekennzeichnet, dass der Kreppschaber einen Schleifwinkel α im Bereich von 0,5° bis 10, insbesondere zwischen 3° bis 8° und/oder der Anstellwinkel γ von 20° bis 30° und/oder der Anstellwinkel ß zwischen 5° bis 20° ist, insbesondere von ca. 14° einnimmt. 1 1. Paper machine according to claim 10, characterized in that the creping doctor a grinding angle α in the range of 0.5 ° to 10, in particular between 3 ° to 8 ° and / or the angle of attack γ of 20 ° to 30 ° and / or the angle of attack between ß 5 ° to 20 °, in particular of about 14 ° occupies.
12. Papiermaschine gemäß wenigstens einem der Ansprüche 6 bis 1 1 , dadurch gekennzeichnet, dass die Softwalze (10) eine Deutsche Presse ist, welche die Papierbahn (16) an den Glättzylinder (2), insbesondere den Yankee-Zylinder aufbringt und das ferner insbesondere ein Schonfilz (1 1 ) wie beispielsweise ein Velin-Filz verwendet wird und vorzugsweise die Linienkraft zwischen Presse und 12. Paper machine according to at least one of claims 6 to 1 1, characterized in that the Softwalze (10) is a German press, which applies the paper web (16) to the Yankee cylinder (2), in particular the Yankee cylinder and further in particular a Schonfilz (1 1) such as a vellum felt is used and preferably the line force between press and
Zylinder im Bereich von 5 bis 20kN/m liegt.  Cylinder is in the range of 5 to 20kN / m.
13. Krepppapier, welches mit einem Verfahren gemäß wenigstens einem der 13. crepe paper, which with a method according to at least one of
Ansprüche 1 bis 5, vorzugsweise auf einer Papiermaschine gemäß  Claims 1 to 5, preferably on a paper machine according to
wenigstens einem der Ansprüche 6 bis 12 hergestellt wurde.  at least one of claims 6 to 12 has been prepared.
14. Verwendung des Krepppapiers gemäß Anspruch 13 als technisches Papier für die Umwicklung, Isolierung, Beschichtung und als Trägermaterial 14. Use of the creping paper according to claim 13 as a technical paper for wrapping, insulation, coating and as a carrier material
insbesondere in Dachbahnen, als Medizinische Papiere für Dampf- und Gassterilisation, Dentalkrepppapiere, als Geschenkpapiere,  especially in roofing membranes, as medical papers for steam and gas sterilization, dental crepe papers, as gift papers,
Packkrepppapiere, Krepppapiere für die Textilhülsenproduktion, als  Packing crepe papers, crepe papers for textile sleeve production, as
Isolationskrepppapier für die Elektroindustrie, zur Kaschierung von Papier, Pappe und Karton, als farbige Papiere, als nassfeste Papiere, als hydrophobe Isolation crepe paper for the electrical industry, for laminating paper, cardboard and cardboard, as colored papers, as wet-strength papers, as hydrophobic
Papiere, Sicherheitspapiere, für Verpackungen, zum Basteln, Dekorieren, für Papierblumen und dergleichen. Papers, security papers, packaging, crafting, decorating, paper flowers and the like.
EP11736307.7A 2010-06-29 2011-06-29 Method for producing crepe paper that is smooth on one side Not-in-force EP2588668B1 (en)

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US20130228299A1 (en) 2013-09-05
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DE102010017648A1 (en) 2011-12-29
WO2012001071A2 (en) 2012-01-05
EP2588668B1 (en) 2017-11-15
NO2588668T3 (en) 2018-04-14
WO2012001071A3 (en) 2012-04-19
US8840755B2 (en) 2014-09-23
CN103124817A (en) 2013-05-29

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