EP2583760A1 - Tête de coucheuse à fontaine directe - Google Patents

Tête de coucheuse à fontaine directe Download PDF

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Publication number
EP2583760A1
EP2583760A1 EP10851736.8A EP10851736A EP2583760A1 EP 2583760 A1 EP2583760 A1 EP 2583760A1 EP 10851736 A EP10851736 A EP 10851736A EP 2583760 A1 EP2583760 A1 EP 2583760A1
Authority
EP
European Patent Office
Prior art keywords
coater
head
coater head
lip
nozzle
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.)
Pending
Application number
EP10851736.8A
Other languages
German (de)
English (en)
Other versions
EP2583760A4 (fr
Inventor
Toshihiro Katano
Hiroyuki Kohno
Akio Hirano
Tadashi Sasa
Katsumi Ishizuka
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 EP2583760A1 publication Critical patent/EP2583760A1/fr
Publication of EP2583760A4 publication Critical patent/EP2583760A4/fr
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/007—Slide-hopper coaters, i.e. apparatus in which the liquid or other fluent material flows freely on an inclined surface before contacting the work
    • B05C5/008—Slide-hopper curtain coaters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/46—Pouring or allowing the fluid to flow in a continuous stream on to the surface, the entire stream being carried away by the paper
    • D21H23/48—Curtain coaters

Definitions

  • the present invention relates to a head for a DF coater, which serves to flow down a coating color in the form of a curtain film and applied to a base material.
  • DF (direct fountain) coaters which form a coating on the surface of a paper or the like by forming a curtain paint in the form of a curtain film and a belt-shaped base material, such as paper or the like, through the curtain Film lead.
  • curtain paint in the form of a curtain film and a belt-shaped base material, such as paper or the like
  • curtain Film lead a belt-shaped base material
  • regulation is made of the amount of liquid supplied to the chambers provided at the respective heads of the multi-layer system.
  • this regulation there are, for.
  • the method of regulating the amount of liquid supplied to the chambers by structurally changing the flow path within the chambers and the size of the opening area of the feed opening see, for example, Patent Documents 1, 2).
  • the present invention is with respect to the o.
  • Circumstances have been made and aims to provide a head for a DF coater, with which the profile of the curtain film can be regulated for each of the heads of the multilayer system with a simple structure.
  • the present invention is characterized in that it consists of a head for a DF coater, which is equipped with a plurality of chambers, which are supplied with a coating color, and from these chambers from a nozzle area each coating color flow out, so that the spread coating color forms the shape of a curtain film, wherein the structure is such that a above-mentioned chamber and a nozzle area containing DF coater head single areas are provided as a multilayer system and for each of these DF coater head single areas the gap of the nozzle area is adjustable.
  • A. DF coater head single areas are each loaded and the o.
  • A. DF coater head single areas individually so movable that a regulation of the gap of o.
  • A. Nozzle area is possible.
  • A. Nozzle region has a regulating lip and a regulating bolt engaging in this regulating lip for regulating the gap of the above-mentioned. Provide nozzle area and the direction of attachment and detachment of this regulatory bolt approximately parallel to the direction of movement of o.
  • A. DF coater head single areas.
  • A. DF coater head single areas extend and are elongated in shape and have several o.
  • A. Regulating bolts are provided with a distance to each other.
  • the formation can also take place in such a way that, in the state in which side-by-side o.
  • A. DF coater heads single areas a space is formed between these DF coater head single areas.
  • a lip portion can be provided, which serves to run down the above-mentioned coating color in the form of a curtain film, wherein the above lip part is constructed rotatable, so that the angle of the front edge of the above lip part can be changed.
  • a head for a DF coater By a head for a DF coater according to the present invention, it is possible to regulate the flow amount of the coating paint without changing the flow path supplying ink to the inside of the respective chambers and the size of the opening area of the feed opening because of the structure is that one oa Chamber and a o.
  • A. Nozzle area containing DF coater head single areas are provided as a multilayer system and for each of these DF coater head single areas of the gap of o.
  • A. Nozzle areas is adjustable. Therefore, the profile of the curtain film can be regulated without complicating the structure of the respective head individual areas. Further, since there is a structure in which the gap of the nozzle area is regulated, the profile of the curtain film can be regulated with a structure that is simple in comparison with the former.
  • Fig. 1 is a rear view of the DF coater head 1 of the present invention and Fig. 2 Fig. 13 is a sectional view taken along the line A-A.
  • the vertical direction used in the present detailed description is based on Fig. 1
  • the width direction is the left and right direction of the paper surface of Fig. 1
  • the longitudinal direction is that in the depth of the paper surface of Fig. 1 walking direction (The lower side is the front side Fig. 2 the left side of the paper surface is the front side.).
  • the DF coater head 1 is as in Fig. 1 shown elongated in the width direction and constructed so that it is possible, the curtain film T from the coating color W (see for details Fig. 5 to Fig. 8 ) from the total length of this width direction directed down to flow down.
  • This DF Coater Head 1 is as in Fig. 2 shown constructed from the first DF coater head single area 2 positioned in the foremost row and the areas arranged behind it second DF coater head single area 3 and third DF coater head single area 4.
  • These DF coater capita individual areas 2, 3 and 4 form a multilayer system in that they are lined up in the longitudinal direction of the DF coater head 1.
  • Fig. 3 is a cross-sectional view of the first DF coater head single area 2.
  • the first DF coater head single area 2 is as in Fig. 3 shown constructed of a fixed lip 10, a chamber component 20 positioned on the rear side of this fixed lip 10, and a regulating lip 30 positioned on the upper side of this chamber component 20.
  • the fixed lip 10 is formed in the form of a flat plate having a certain thickness, and is continuously provided over the entire length in the width direction of the DF coater head 1.
  • a lip portion 40 is provided on the upper side of the front surface 10 a of this fixed lip 10. Further, the details of this lip part 40 will be explained later. Furthermore, the upper surface of the fixed lip 10, as explained in detail later, acts as a flow path 15 on which the coating color W flows.
  • a threaded bore 11 is provided, which serves the assembly of this fixed lip 10 with the chamber component 20.
  • a threaded hole 11 are provided in a DF coater head 1 directed in the longitudinal direction piercing state in the width direction with a distance more.
  • the chamber component 20 has, as in Fig. 3 shown, a shape in which at the upper part of a plate-shaped member, a step is provided, and also this chamber component 20, as well as the fixed lip 10, over the entire length in Width direction of the DF coater head 1 continuously provided. Further, in the chamber component 20 at a position opposite to the threaded hole 11 described above, a bolt passing hole 21 is formed. Characterized in that a bolt 22 is performed by this bolt passage opening 21 and is screwed into the threaded hole 11, the fixed lip 10 and the chamber component 20 are joined waterproof without a gap.
  • This bolt passing opening 21 is a sinking hole so that the head of the bolt 22 does not peer out from the rear surface 20b of the chamber component 20.
  • This bolt 22 z. B. a hexagon socket bolt o. ⁇ . Be used.
  • the chamber component 20, as in Fig. 3 shown equipped with a chamber 23 and a lip presser 24th The chamber 23 is, as in Fig. 3 shown shaped so that it is approximately semicircular hollowed in cross section. Furthermore, the chamber 23 is formed over the entire length in the width direction of the first DF coater head single area 2. This chamber 23 is closed by the rear surface 10b of the fixed lip 10 in the state in which the fixed lip 10 and the chamber component 20 have been joined together. Furthermore, the side surfaces of the chamber 23 by the left and right side surface plates 12, 12 (see Fig. 1 ) locked. These side surface plates 12, 12 are attached by bolts 14 to the side surface of the fixed lip 10 and the chamber component 20. As a result, the chamber 23 is formed as a space and can absorb the coating color W.
  • supply pipes 13, 13 are provided. These supply pipes 13, 13 are respectively connected to the coating color supply line of the DF coater, and from these supply pipes 13, 13, the coating color W is supplied to the inside of the chamber 23.
  • the lip press member 24 is formed over the chamber 23 and extends to the upper side so that the rear surface 20b of the chamber component 20 becomes a flat surface.
  • the part of the front side of this lip press member 24 is cut in steps by milling or the like, and at this cut part, the regulation lip 30 described below is installed.
  • this lip presser 24 there are formed two bolt through holes 25 and 26 bored longitudinally from the rear surface 20b of the chamber component 20. These bolt passing holes 25 and 26 are sink holes so that the head of the bolts 27 and 28 does not peek out from the rear surface 20b of the chamber component 20.
  • a threaded bore 29 is formed on the lip press member 24 above the bolt passage openings 25 and 26, which is directed longitudinally from the rear surface 20 b of the chamber component 20 and serves to screw the pressure pin 36 tight.
  • the pressure pin 36 serves to push the regulation lip 30 described below.
  • the regulating lip 30 is, as in FIG Fig. 3 shown, formed approximately in the shape of the letter L, wherein a side of this L-shape to the nozzle molding 31 and the other side to the coating color flow path part 32 becomes.
  • the nozzle molding 31 is mounted to lie between the fixed lip 10 and the lip press member 24 of the chamber component 20. Between the rear surface 10b of this fixed lip 10 and the nozzle molding 31, the nozzle member 33 is formed.
  • This nozzle part 33 is a gap that extends from the chamber 23 to the upper outer side and is continuously formed over the entire length in the width direction of the DF coater head 1. As a result, the coating ink W supplied to the interior of the chamber 23 flows out of the nozzle part 33 from the upper part of the first DF counter-head single area 2.
  • threaded bores 34 and 35 are provided on the nozzle molding 31 at a bolt insertion openings 25 and 26 of the lip extrusion 24 opposite position. In these threaded bores 34 and 35, the bolts 27 and 28 inserted from the bolt through-holes 25 and 26 described above are screwed.
  • the bolt 27 acts as a fixing bolt and is tightened until the lip press member 24 and the nozzle molding 31 are firmly connected.
  • the bolt 28 acts as a tension bolt for regulation and is used for regulation that the nozzle molding 31 is pulled backwards.
  • the above-described pressure pin 36 is used for regulation so that the nozzle molding 31 is pushed forward. In this way, the bolts 27 and 28 and the pressure pins 36 function as regulating pins serving to regulate the position of the nozzle molding 31 of the regulating lip 30 in the longitudinal direction (the gap of the nozzle part 33).
  • the coating color flow path part 32 extends as shown in FIG Fig. 3 shown directed from the rear edge portion of the nozzle molding 31 to the rear, so that the coating color W flows over the upper surface 32 b.
  • the inclined surface 32a directed toward the lower side is formed. Further, at this inclination surface 32a, the gasket 37 is provided over the entire DF coater head 1 in the width direction.
  • the lip part 40 has the function of allowing the coating color W to flow down in the form of the curtain film T.
  • This lip part 40 is, as in 8 (A) and 8 (B) shown equipped with the mounting bracket 41 attached to the fixed lip 10 and the rotary member 43 rotatably installed on this mounting bracket 41.
  • the attachment post 41 is attached to the top of the front surface of the fixed lip 10 via a bolt not shown in the drawing. Furthermore, a circular arc-shaped base is formed on the front part of the mounting bracket 41. In a part of this subset, the rotary member 43 is inserted rotatably.
  • the coating color guide member 46 is formed, which serves to let the down-flowing coating color W flow down in the form of the curtain film T.
  • This coating color guide member 46 is formed so that when the rotary member 43 is rotated, the angle ⁇ (see FIG Fig. 8 (B)) changed.
  • FIG. 4 is a sectional view showing the second DF coater head single area 3 and the third DF coater head single area 4. Further, since the second DF coater head single area 3 and the third DF coater head single area 4 are identical, the second DF coater head single area 3 will be explained below and the explanation of the third DF coater head -Single area 4 is saved. Further, in the second DF coater head single region 3, only the shape of the upper side of the fixed lip 10 is different from that of the first DF coater head single region 2, and the entire other structure is identical. Therefore, identical parts identical signs added and further explanation saved.
  • the fixed part 50 of the second DF coater head single area 3 is as in FIG Fig. 4 shown equipped with the projecting part 51, which projects from the upper part of the front surface 50 a of the fixed part 50 to the front.
  • the flow path surface 51a on which the coating color W flows is provided on the upper surface thereof and the contact surface 51b which comes into contact with the inclining surface 32a of the first DF coater head single region 2 positioned in front thereof.
  • the flow path surface 51a is shaped to be approximately flush with the upper surface 32b of the coating ink flow path part 32 of the first DF coater head single region 2 positioned in front of it.
  • the coating paint W which flows upward from the nozzle portion 33 of the second DF coater head single region 3 after flowing over the flow path surface 51a, flows over the upper surface 32b of the coating ink flow path member 32 and then flows to the front surface Edge portion of the DF coater head 1 positioned lip portion 40th Furthermore, even if between the inclination surface 32a and the contact surface 51b coating color W has penetrated, is prevented by the provided on the slope surface 32a seal 37 that coating color W penetrates into the inner part of the DF coater head 1.
  • the carriage part 70 is provided, by which these head single areas 2, 3 and 4 can be individually moved back and forth, respectively.
  • This carriage part 70 is composed of the slide parts 71 respectively attached to the lower side of all the individual areas 2 and 3 and the rail part 72 which extends in the longitudinal direction and guides these slide parts 71 in the longitudinal direction.
  • This rail part 72 is disposed on both sides in the transverse direction of the DF coater head 1. Furthermore, the rail part 72 is as in Fig. 5 to 7 shown arranged so that the front edge portion 72a is lower than the rear edge portion 72b. Ie. the DF coater head 1 is mounted along this rail part 72 in an inclined position.
  • Fig. 5 shows the state in which the gap of the nozzle portion 33 of the first DF coater head single area 2 is regulated. In this state, the two second and third DF coater head single areas 3 and 4 positioned behind the first DF coater head single area 2 are moved rearwardly along the rail portion 72. As a result, the work area 73 is formed between the first DF coater head single area 2 and the second DF coater head single area 3.
  • the worker feeds the coating paint W supplied to the interior of the chamber 23 of the first DF coater head single area 2 through the nozzle area 33 to the lip portion 40, and makes the coating color W flow down in the form of the curtain film T.
  • the gap of the nozzle region 33 is adapted to the profile of the curtain film T, d. H. to the intensity, the film thickness, etc. of the coating color W in the width direction.
  • the gap of the nozzle portion 33 can be regulated by regulating the bolts 27 and 28 and the pressure pin 36 (hereinafter called regulating pin) from the working portion 73.
  • regulating pin the pressure pin 36
  • Fig. 6 shows the state in which the gap of the second DF coater head single area 3 is regulated.
  • this state while the first DF coater head single area 2 and the second DF coater head single area 3 positioned behind are joined together, only the third DF coater head single area 4 positioned behind it tracks along the rail part 72 moved behind.
  • the work area 73 is formed between the second and third DF coater head single areas 3 and 4.
  • the worker feeds the coating paint W supplied to the interior of the chamber 23 of the second DF coater head single area 3 through the nozzle area 33 to the lip portion 40, and makes the coating color W flow down in the form of the curtain film T.
  • the gap of the nozzle region 33 is adapted to the profile of the curtain film T, d. H. to the intensity, the film thickness, etc. of the coating color W in the width direction.
  • the seal 37 prevents the coating color W from entering the Inner part of the DF coater head 1 penetrates.
  • the gap of the nozzle portion 33 can be regulated by regulating the bolts 27 and 28 and the pressure pin 36 (hereinafter called regulating pin) from the working portion 73.
  • regulating pin the pressure pin 36
  • the regulating pins 27, 28 and 36 can be mounted and removed in the longitudinal direction, that is, in the direction identical to the direction in which the respective head individual portions 2, 3 and 4 move along the rail portion 72, can be by the formation of the working area 73, the regulation of the gap can be easily performed.
  • Fig. 7 Fig. 12 shows the state in which the gap of the rearmost positioned third DF coater head single area 4 is regulated. In this state, the gap can be regulated while the three respective head single areas 2, 3 and 4 are joined together. Furthermore, as the regulatory procedure is identical to the one in Fig. 5 and Fig. 6 shown state, a detailed explanation is saved.
  • a DF coater head 1 By means of a DF coater head 1 according to the embodiment of the present invention, it is possible to regulate the flow amount of the coating color W without the flow path serving to apply coating paint W to the inside of the respective chambers 23 and the size of the opening area of the ink jet Feed opening to change, because the structure is such that the DF-Coater-head-individual areas 2, 3 and 4 containing a chamber 23 and a nozzle area 33 are provided as a multilayer system and for each of these DF coater head single areas 2, 3rd and 4, the gap of the nozzle portion 33 is adjustable. Therefore, the profile of the curtain film T can be regulated without complicating the structure of the respective head individual areas 2, 3 and 4. Further, since there is a structure in which the gap of the nozzle portion 33 is regulated, the profile of the curtain film T can be regulated with a structure simple as compared with the former.
  • the regulating lip 30 for constituting the nozzle portion 33 and the regulating pins 27, 28 and 36 engaging in this regulating lip 30 are provided for regulating the gap of the nozzle portion 33 and the direction of attachment and removal of these regulating pins 27, 28 and 36 approximately parallel to the Movement direction of the DF coater head single areas 2, 3 and 4, the working area 73 is formed in the direction of attachment and removal of the regulating bolts 27, 28 and 36. As a result, the work of regulating the gap of the nozzle portions 33 can be performed reliably and easily.
  • the chamber 23 and the nozzle portion 33 are formed in the widthwise direction of the DF coater head single portions 2, 3 and 4 extending in an elongated shape and are provided by the regulating pins 27, 28 and 36 in this width direction a plurality of spaced apart , the gap of the nozzle region 33 can be precisely regulated via this width direction.
  • the profile of the curtain film T adapted to the film thickness of the curtain film T in the width direction, the intensity of the coating color W and so on can be regulated.
  • the lip part 40 is provided which serves to let the coating color W flow down in the form of the curtain film T, and the lip part 40 is constructed to be rotatable so that the angle ⁇ at the front edge of the lip part 40 can be changed the coating color W from the front edge of the coating color guide member 46 about vertically down and a so-called teapot phenomenon (inward leakage phenomenon) can be prevented.
  • the teapot phenomenon inward leakage phenomenon
  • the present invention is not limited to the embodiment described above, but on the basis of the technological idea of the present invention, all kinds of conversions and changes are possible .
  • the number of the first, second, and third DF coater head single regions 2, 3, and 4, three in all is only one example and is not limited to three.
  • it may also be a multi-layer system in which two (only the first DF coater head single area 2 and the second DF coater head single area 3) or four or more (more than three including the first DF coater Head single area 2 and the second DF coater head single area 3) are juxtaposed.
  • the carriage member 70 is constructed of the slider 71 and the rail member 72, but insofar as the respective head individual sections 2, 3, and 4 are slidably guided, there is no limitation to this structure.
  • the respective individual head regions 2, 3 and 4 can also be guided using a direct motion device with a rotationally fixed ball guide.
EP10851736.8A 2010-05-18 2010-05-18 Tête de coucheuse à fontaine directe Pending EP2583760A4 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2010/058361 WO2011145172A1 (fr) 2010-05-18 2010-05-18 Tête de coucheuse à fontaine directe

Publications (2)

Publication Number Publication Date
EP2583760A1 true EP2583760A1 (fr) 2013-04-24
EP2583760A4 EP2583760A4 (fr) 2017-12-20

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Application Number Title Priority Date Filing Date
EP10851736.8A Pending EP2583760A4 (fr) 2010-05-18 2010-05-18 Tête de coucheuse à fontaine directe

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EP (1) EP2583760A4 (fr)
JP (1) JPWO2011145172A1 (fr)
WO (1) WO2011145172A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012010050A1 (de) 2012-05-22 2013-11-28 Andritz Küsters Gmbh Kaskadendüse zum Auftragen mehrerer Schichten
DE102015119818A1 (de) * 2015-11-17 2017-05-18 V.I.E. Systems GmbH Vorhangdüse zum beschichten eines substrats mit variabler spaltbreite

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Publication number Priority date Publication date Assignee Title
JP2961027B2 (ja) * 1992-11-11 1999-10-12 三菱重工業株式会社 塗工液ノズル
US5464577A (en) * 1994-01-04 1995-11-07 Minnesota Mining And Manufacturing Company Method of thickness control for dies
US6813820B2 (en) * 2001-12-19 2004-11-09 3M Innovative Properties Company Method of improving coating uniformity
FI112815B (fi) * 2002-09-20 2004-01-15 Metso Paper Inc Päällystyslaite
FI121242B (fi) 2004-02-25 2010-08-31 Metso Paper Inc Menetelmä ja järjestely paperi-/kartonkirainan päällystämiseksi verhopäällystyslaitteella
FI118926B (fi) 2007-02-15 2008-05-15 Metso Paper Inc Paperi-/kartonkirainan verhopäällystyslaite
DE102007000782A1 (de) * 2007-09-27 2009-04-02 Voith Patent Gmbh Auftragsvorrichtung zum Auftragen wenigstens zweier Schichten auf eine Papier-, Karton- oder andere Faserstoffbahn
DE102008014863A1 (de) * 2008-03-18 2009-09-24 Polytype Converting S.A. Vorhangbeschichten mit Bend-Back-Reduzierung
JP5282284B2 (ja) * 2008-04-25 2013-09-04 ボイス パテント ゲーエムベーハー カーテンコータ

Non-Patent Citations (1)

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Title
See references of WO2011145172A1 *

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WO2011145172A1 (fr) 2011-11-24
EP2583760A4 (fr) 2017-12-20
JPWO2011145172A1 (ja) 2013-07-22

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