EP2414588A1 - Dispositif d'égalisation - Google Patents

Dispositif d'égalisation

Info

Publication number
EP2414588A1
EP2414588A1 EP10710844A EP10710844A EP2414588A1 EP 2414588 A1 EP2414588 A1 EP 2414588A1 EP 10710844 A EP10710844 A EP 10710844A EP 10710844 A EP10710844 A EP 10710844A EP 2414588 A1 EP2414588 A1 EP 2414588A1
Authority
EP
European Patent Office
Prior art keywords
blade holder
doctor blade
doctor
reinforced plastic
aramid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10710844A
Other languages
German (de)
English (en)
Inventor
Christoph Henninger
Martin Kustermann
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.)
Voith Patent GmbH
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 EP2414588A1 publication Critical patent/EP2414588A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • 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

Definitions

  • the invention relates to a device for leveling a directly or indirectly on a moving web of material, in particular paper, cardboard, tissue or other fibrous web, liquid or pasty medium can be applied with at least one doctor element and a doctor blade holder for receiving the doctor element.
  • the doctor element may, for example, be a doctor blade or a doctor element of any other type.
  • a device of this kind is known, for example, from EP 0 846 804 A1.
  • the usual squeegee holders are made of steel or stainless steel.
  • the disadvantage here is in particular their depending on the state of production different heating due to a varying thermal loading.
  • a different thermal loading may result, for example, from the following circumstances: start-up condition with cold water, start of production with warm coating medium, continuous production with further heated coating medium, external influences, for example in connection with a respective cleaning or thermal environmental conditions.
  • This variable thermal loading can have a different effect on the doctor blade holder both overall and across the machine width.
  • the doctor blade holder is connected to the associated carrier body via a length expansion compensation device.
  • a length-expansion compensation device is now relatively expensive and correspondingly expensive.
  • the doctor blade holder is pivotally connected to the associated support body to allow for a balance of different thermal expansions a relative movement between blade holder and support body. Also, such an articulated connection between the doctor blade holder and support body is relatively expensive.
  • the invention has for its object to provide an improved device of the type mentioned, in which the aforementioned disadvantages are eliminated. It should be ensured in the simplest and most economical manner in particular the highest possible uniformity of the doctor blade holder and, accordingly, the highest possible accuracy of leveling.
  • doctor blade holder consists at least substantially of fiber composite material.
  • the doctor blade holder consists of a material containing glass fiber reinforced plastic (GRP).
  • the doctor blade holder at least substantially consist entirely of glass fiber reinforced plastic (GRP).
  • the doctor blade holder can consist of a material which contains glass fibers, glass fibers, at least one glass mat and / or at least one glass fabric.
  • the fiberglass-reinforced plastic (GRP) containing material of the doctor blade holder can be reinforced and / or provided with filler, for example.
  • the material of the doctor blade holder containing glass fiber reinforced plastic (GRP) is produced by hand lamination or pultrusion.
  • the doctor blade holder consists of a material containing aramid.
  • the doctor blade holder can in particular consist at least substantially entirely of aramid.
  • the doctor blade holder may for example consist of a material containing aramid fibers, aramid fibers, at least one aramid mat and / or at least one aramid fabric.
  • the aramid-containing material of the doctor blade holder can be reinforced and / or provided with filler.
  • the aramid-containing material of the doctor blade holder is again produced by hand lamination or pultrusion.
  • the doctor blade holder consists of a material containing carbon fiber reinforced plastic (CFRP).
  • the squeegee holder at least substantially consist entirely of carbon fiber reinforced plastic (CFRP).
  • the doctor blade holder may consist of a material which contains carbon fibers, carbon threads, at least one carbon fiber mat and / or at least one carbon fiber fabric.
  • the material containing the carbon fiber reinforced plastic (CFRP) of the doctor blade holder is produced by hand lamination or in an autoclave, in particular from prepreg.
  • the doctor blade head advantageously has a thermal expansion coefficient in the range of about - 4 x 10 -6 m / K to about + 4 x 10 -6 m / K.
  • the doctor blade holder is usually supported on a support body.
  • the doctor blade holder can be mechanically connected directly or indirectly with thermal shielding with the support body.
  • the squeegee holder is indirectly connected via webs to the support body, wherein the thermal shielding is preferably effected via provided between the webs air.
  • An application device for applying the liquid or pasty medium can also be supported on the support body.
  • doctor blade holder may be that it is releasably connected to the support body. This can be done for example by means of screw or snap connection. The connection with the support body is possible directly or via said webs.
  • doctor blade holder is at least partially provided with a wear-resistant material in the region in which the doctor element is held, that is clamped and / or only rests on.
  • a wear-resistant material for this example, metal or ceramic strips can be used.
  • a further advantageous embodiment of the device is that the doctor blade holder is at least partially not solid, better said, hollow. It is expedient to choose a honeycomb structure or honeycomb-like structure.
  • the honeycombs should extend in the transverse direction (cross direction) of the device or the doctor blade holder. Above all, such an education saves on expensive material costs for fibers and resin of the blade carrier made of CFRP or GFRP.
  • Fig. 1 is a schematic representation of an exemplary embodiments with reference to the drawing; in this show:
  • Fig. 1 is a schematic representation of an exemplary embodiments with reference to the drawing; in this show:
  • Fig. 1 is a schematic representation of an exemplary embodiments with reference to the drawing; in this show:
  • Embodiment of the device according to the invention in which the doctor blade holder is mechanically directly connected to the support body, and
  • Fig. 2 is a schematic representation of another exemplary embodiment of the device according to the invention, in which the doctor blade holder is connected indirectly via webs with the support body.
  • Fig. 1 shows a schematic representation of an exemplary embodiment of a device 10 for leveling one directly or indirectly on a moving material web, in particular paper, cardboard, tissue or other fibrous web, liquid or pasty medium can be applied.
  • the device 10 comprises at least one squeegee element 12 and a squeegee holder 14 for receiving the squeegee element 12.
  • the squeegee element 12 may be, for example, a coating blade or else a squeegee element of any other type.
  • the squeegee element 14 is arranged opposite a counter-roller 28, which serves as a support surface for the liquid or pasty medium 16 in the case of an indirect application method and as a support surface for the material web in the case of a direct application method.
  • the direction of rotation of the counter-roller 28 is indicated by an arrow 18.
  • the doctor blade holder 14 is supported on a support body 20.
  • the doctor blade holder 14 in the present case for example, is mechanically connected directly to this support body 20.
  • An application device 22 can additionally be supported on the carrier body 20, via which the liquid or pasty medium 16 is applied to the counter-roller 28 or to the material web supported thereon.
  • the doctor blade holder 14 consists at least substantially of fiber composite material.
  • the doctor blade holder 14 for example, consist of a material containing glass fiber reinforced plastic (GRP). In this case, it may in particular consist at least substantially entirely of glass fiber reinforced plastic (GRP).
  • GRP glass fiber reinforced plastic
  • the doctor blade holder 14 may in particular consist of a material which contains glass fibers, glass fibers, at least one glass mat and / or at least one glass fabric.
  • the glass fiber reinforced plastic (GRP) containing material of the doctor blade holder 14 is reinforced and / or provided with filler.
  • the material of the doctor blade holder 14 containing glass fiber reinforced plastic (GRP) can be produced, for example, by hand lamination or pultrusion.
  • the doctor blade holder 14 may also be made of a material containing aramid. It may expediently consist at least substantially entirely of aramid. In this case, the doctor blade holder 14 may in particular consist of a material which contains aramid fibers, aramid fibers, at least one aramid mat and / or at least one aramid fabric.
  • the aramid-containing material of the doctor blade holder 14 may for example be reinforced again and / or provided with filler.
  • the aramid-containing material of the doctor blade holder 14 can also be made, for example, by hand lamination or pultrusion again.
  • the doctor blade holder 14 may for example also consist of a material containing carbon fiber reinforced plastic (CFRP).
  • the doctor blade holder 14 may in particular consist at least substantially entirely of carbon fiber reinforced plastic (CFRP).
  • the doctor blade holder 14 may in particular consist of a material containing carbon fibers, carbon filaments, at least one carbon mat and / or at least one carbon cloth.
  • the carbon fiber-reinforced plastic (CFRP) -containing material of the doctor blade holder 14 can be produced, for example, by hand lamination or in an autoclave, in particular of prepreg.
  • the doctor blade head 14 preferably has a thermal expansion coefficient in the range of about - 4 x 10 6 m / K to about + 4 x 10- 6 m / K.
  • the applicator 22 may be connected via webs 24 with the support body 20. While in the present embodiment shown in FIG. 1, the doctor blade 14 is mechanically connected directly to the support body 20, FIG. 2 is a schematic representation of another exemplary embodiment of the leveling device 10, in which the doctor support 14 with thermal shield is indirectly connected to the support body 20.
  • the doctor blade holder 14 is connected indirectly via webs 26 to the carrier body 20, wherein the thermal shielding is preferably effected via air provided between the webs 26, which, for example, may also be moved.
  • this embodiment has at least substantially the same structure as that shown in FIG. 1.
  • the doctor element 12 may again be designed as described in connection with FIG. Corresponding parts are assigned the same reference numerals.

Landscapes

  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Reinforced Plastic Materials (AREA)
  • Coating Apparatus (AREA)

Abstract

L'invention concerne un dispositif permettant d'égaliser un agent liquide ou pâteux destiné à être appliqué directement ou indirectement sur une bande défilante de matériau, en particulier de papier, carton, ouate de cellulose ou de toute autre matière fibreuse, comportant au moins un élément de raclage de même qu'un support de racle servant à recevoir l'élément de raclage, le support de raclage étant au moins sensiblement en matériau composite fibreux.
EP10710844A 2009-03-31 2010-03-25 Dispositif d'égalisation Withdrawn EP2414588A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200910002027 DE102009002027A1 (de) 2009-03-31 2009-03-31 Vorrichtung zur Egalisierung
PCT/EP2010/053879 WO2010112388A1 (fr) 2009-03-31 2010-03-25 Dispositif d'égalisation

Publications (1)

Publication Number Publication Date
EP2414588A1 true EP2414588A1 (fr) 2012-02-08

Family

ID=42235372

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10710844A Withdrawn EP2414588A1 (fr) 2009-03-31 2010-03-25 Dispositif d'égalisation

Country Status (5)

Country Link
EP (1) EP2414588A1 (fr)
JP (1) JP3175276U (fr)
CN (1) CN102362032A (fr)
DE (1) DE102009002027A1 (fr)
WO (1) WO2010112388A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107073504A (zh) * 2014-08-15 2017-08-18 福伊特专利有限公司 涂布机
CN113699690A (zh) * 2021-09-30 2021-11-26 许玉梅 一种复合无纺布加工工艺

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1320643A1 (fr) 2000-09-29 2003-06-25 Metso Paper, Inc. Latte de soutien pour dispositif racleur

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5186753A (en) * 1990-07-10 1993-02-16 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Fountain coater
DE9113542U1 (fr) * 1991-10-31 1992-06-17 J.M. Voith Gmbh, 7920 Heidenheim, De
DE4141133C1 (en) * 1991-12-13 1993-05-27 J.M. Voith Gmbh, 7920 Heidenheim, De Support beam for doctor blade bearing on dry cylinder - comprises elongated hollow body having 2 or more convex curved longitudinal walls and composed of composite fibre material e.g. carbon@ fibres
FI105167B (fi) 1995-12-28 2000-06-30 Valmet Corp Applikointilaite päällystysaineen applikoimiseksi liikkuvalle alustalle
DE19619250A1 (de) * 1996-05-13 1997-11-20 Voith Sulzer Papiermasch Gmbh Vorrichtung und Verfahren zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Mediums auf eine laufende Materialbahn, insbesondere aus Papier oder Karton
DE19649559A1 (de) * 1996-11-29 1998-06-04 Voith Sulzer Papiermasch Gmbh Vorrichtung zum direkten oder indirekten Auftragen eines flüssigen oder pastösen Streichmediums auf eine laufende Materialbahn
FI104103B1 (fi) * 1998-11-09 1999-11-15 Valmet Corp Päällystyssauva
FI114328B (fi) * 2003-01-30 2004-09-30 Metso Paper Inc Komposiittirakenteinen käsittelylaitteisto
DE102004005079A1 (de) * 2004-02-02 2005-08-18 Voith Paper Patent Gmbh Auftragsvorrichtung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1320643A1 (fr) 2000-09-29 2003-06-25 Metso Paper, Inc. Latte de soutien pour dispositif racleur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010112388A1

Also Published As

Publication number Publication date
DE102009002027A1 (de) 2010-10-07
WO2010112388A1 (fr) 2010-10-07
JP3175276U (ja) 2012-05-10
CN102362032A (zh) 2012-02-22

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