EP1343595B1 - Verfahren und vorrichtung zur indirekten auftragung einer dünnen schicht - Google Patents

Verfahren und vorrichtung zur indirekten auftragung einer dünnen schicht Download PDF

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Publication number
EP1343595B1
EP1343595B1 EP20000988523 EP00988523A EP1343595B1 EP 1343595 B1 EP1343595 B1 EP 1343595B1 EP 20000988523 EP20000988523 EP 20000988523 EP 00988523 A EP00988523 A EP 00988523A EP 1343595 B1 EP1343595 B1 EP 1343595B1
Authority
EP
European Patent Office
Prior art keywords
coating
cylinder
installation
applicator
tank
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.)
Expired - Lifetime
Application number
EP20000988523
Other languages
English (en)
French (fr)
Other versions
EP1343595A1 (de
Inventor
Dung Dao Viet
Gabriel Houba
Jean-Yves Simon
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.)
Tarkett SAS
Original Assignee
Tarkett Sommer SA
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 Tarkett Sommer SA filed Critical Tarkett Sommer SA
Publication of EP1343595A1 publication Critical patent/EP1343595A1/de
Application granted granted Critical
Publication of EP1343595B1 publication Critical patent/EP1343595B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
    • B05C1/0834—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets the coating roller co-operating with other rollers, e.g. dosing, transfer rollers

Definitions

  • the present invention relates to a method improved indirect coating of a thin layer and uniform over a large width, i.e. a coating in which the material, in a conventional manner, is applied in a thin layer on a support which scrolls facing a cylinder, which continuously transfers the material coating on a support.
  • the invention also relates to a device improved coating for supports of the order of 4m large.
  • One or more counter cylinders are provided above the support by exerting a pinching effect (nip).
  • Devices of this type are widely used, especially in the production of various floor and wall coverings.
  • compositions suitable for this use have been described in the European patent application 0 087 0129.4 of June 15, 2000 in the name of the Claimant.
  • composition of these varnishes which have generally a pronounced abrasive character constitutes a problem which has never been resolved in the prior art.
  • Document WO91 / 15306 proposes the use an equalizing cylinder in contact with the cylinder proportioner.
  • This cylinder has a tangential speed differential with respect to the dosing cylinder which allows remove excess material from the dosing cylinder by through a smooth transfer cylinder presenting a Shore A hardness of 60.
  • This system does not allow apply abrasive varnishes in thin layers.
  • EP-A 0550918 Has helical grooves engraved on transfer cylinders allowing a mixture of several components and a better distribution of the coating.
  • the depth of the grooves plays a very important role. important and must always be optimized and adapted in depending on the coatings used. As part of this document, the grooves are relatively deep so keep their mixing function.
  • the invention aims to avoid the drawbacks techniques used so far and aims to ensure at the outlet of the container containing this composition, adequate equalization of the coating composition taken by the applicator cylinder.
  • a applicator cylinder receiving the coating composition contained in a tank or tank in which the cylinder applicator is partially submerged.
  • the emerging part of the applicator cylinder, view of the equalization of the coating composition is in contact with an equalizing cylinder provided with a coating of an elastomeric material, rotating or not in the same direction of rotation than the applicator cylinder and whose speed rotation device is different from that of the applicator cylinder.
  • the installation used consists of classic way by a soaking tank, a cylinder applicator partially submerged in this tank and a cylinder equalizer of the coating composition for the support to coat which is in contact with the emerging part of the applicator cylinder.
  • That of the invention does not include a doctor blade or equalization doctor acting on the material brought by the applicator cylinder, but involves the use of a cylinder equalizer provided with a coating of a material elastomer, rotating or not in the same direction of rotation than the applicator cylinder and whose peripheral speed of rotation is different from that of the cylinder applicator.
  • the elastomeric coating chosen for the equalizing cylinder has sufficient hardness to cause an equalization and smoothing effect. It's about a rubber-like material having hardness Shore of the order of 45 to 80, preferably of the order of 65 to 70 Shore units. Of course, we choose a non-stick material for the coating composition.
  • the applicator cylinders used are conventionally engraved cylinders, of the cylinder type gravure printing, in particular cylinders comprising pyramid, truncated, conical or lines of helical engravings intended to retain the coating composition taken during the passage through the soaking tank.
  • the volume deposited on the support generally corresponds to 10 to 100 ml / m 2 of a (wet) composition with a density of 1. In practice, the density is between 0.8 and 1.5.
  • thin layer is meant a film coating on the order of a few microns to 120 microns and more particularly of the order of 5 ⁇ m and 70 ⁇ m (thickness of the dry and possibly crosslinked coating material film made on the support).
  • the peripheral speed (linear) of the applicator cylinder is around 20 to 40 m / min.
  • the ratio of the peripheral speeds of the cylinder equalizer and applicator cylinder is achieved by a adjustment of the rotation speed (revolutions per minute) of the equalizing cylinder, taking into account the diameters respective cylinders and, of course, the directions of rotation.
  • the installation includes the usual auxiliary equipment such as rollers detour or rollers, drying devices and / or UV crosslinking or others, support unwinders and reels for coated support, level regulator soaking tank, device for adjusting the spacing of cylinders, and drive and cutting mechanisms, etc.
  • auxiliary equipment such as rollers detour or rollers, drying devices and / or UV crosslinking or others, support unwinders and reels for coated support, level regulator soaking tank, device for adjusting the spacing of cylinders, and drive and cutting mechanisms, etc.
  • the attached figure shows schematically a view of an installation according to the invention.
  • the meaning of rotation of the different cylinders and rollers is indicated schematically by arrows.
  • This is partly submerged in the tank and feeds the coating composition to a support 9 to receive the coating and is shown conventionally in broken lines.
  • This one comes from a diet and goes successively through a first guide roller 11 and passes between the cylinder applicator 5 covered with the coating composition and a or more counter cylinders 15 and 17 and ultimately is driven by this cylinder to a second roller guide 13, after having been coated in passing through the cylinder contact 5.
  • the equalizer of the material removed and driven by the applicator cylinder 5 is made using a covered equalizing cylinder 19 of an envelope of an elastomeric material 21.
  • This cylinder equalization 19 rotates in a direction of rotation which is, in the occurrence, the same as that of the applicator cylinder 5. Its peripheral rotation speed can be of the order of half to an eighth of that of the applicator cylinder 5.
  • the specific speed chosen is such that ensures good equalization of the composition layer coating by a smoothing effect.
  • the gear ratio linear (peripheral) of cylinders 5 and 19 which is chosen, however, essentially depends on the viscosity of this coating composition and, to some extent, the hardness of the envelope of elastomeric material.
  • the effect equalizer contrary to what is observed during the use of a doctor blade, causes very little wear cylinders, probably due to the rheological effect resulting from the peripheral linear speed differential between cylinders 5 and 19 and this, despite the presence of abrasive fillers in the coating composition.
  • a suitable device (not shown) can be provided for allow adjustment of the distance between the cylinder applicator 5 and the equalizing cylinder 19.

Landscapes

  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Encapsulation Of And Coatings For Semiconductor Or Solid State Devices (AREA)
  • Glass Compositions (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Claims (8)

  1. Verfahren zum indirekten Auftragen einer dünnen Schicht auf Träger großer Breite mit Hilfe einer gravierten Auftragswalze, (5) die spiralförmige Nuten aufweist und dazu dient, die Beschichtungszusammensetzung (3) aufzunehmen, und die teilweise in eine Wanne oder einen Behälter (1) eintaucht, der die besagte Beschichtungszusammensetzung enthält, dadurch gekennzeichnet, dass
    die besagte dünne Schicht, die in dem Auftragsverfahren aufgebracht wird, in trockenem Zustand auf dem besagten Träger eine einheitliche Dicke zwischen 5 und 70 µm aufweist,
    die Breite des besagten Trägers etwa 4 m beträgt,
    die besagte Beschichtungszusammensetzung (3) Abriebeigenschaften aufweist und
    der am Ausgang der besagten Wanne oder des Behälters austretende Teil der Auftragswalze (5) zwecks gleichmäßiger Verteilung der Beschichtungszusammensetzung in Kontakt mit einer Verteilerwalze (19) ist, die mit einem Elastomerüberzug (21) versehen ist und sich in der gleichen Richtung wie die Auftragswalze (5) dreht oder nicht, und deren Umfangsdrehzahl von der der Auftragswalze (5) verschieden ist.
  2. Verfahren zum indirekten Auftragen einer dünnen Schicht gemäß Anspruch 1, dadurch gekennzeichnet, dass die Auftragsmenge der besagten abrasiven Beschichtungszusammensetzung in feuchtem Zustand auf dem besagten Träger großer Breite zwischen 10 und 100 ml/m2 beträgt.
  3. Anlage für die Anwendung des Verfahrens nach Anspruch 1, die eine Tauchwanne (1) und eine gravierte Auftragswalze (5) mit spiralförmigen Nuten umfasst, die teilweise in die Wanne (1) eintaucht, die die Beschichtungszusammensetzung für den zu beschichtenden Träger (9) enthält, dadurch gekennzeichnet, dass die Anlage eine Verteilerwalze (19) umfasst, die mit einem Elastomerüberzug (21) versehen ist und sich in der gleichen Richtung wie die Auftragswalze (5) dreht oder nicht, und deren Umfangsdrehzahl von der der Auftragswalze (5) verschieden ist.
  4. Anlage nach Anspruch 3, dadurch gekennzeichnet, dass der Elastomerüberzug (21) der Verteilerwalze (19) eine ausreichende Härte aufweist, um eine gleichmäßige Verteilung und Glättung zu bewirken.
  5. Anlage nach Anspruch 4, dadurch gekennzeichnet, dass der Elastomerüberzug (21) aus einem Material vom Typ Gummi besteht, das eine Shore-Härte zwischen 45 und 80 Shore aufweist.
  6. Anlage nach Anspruch 5, dadurch gekennzeichnet, dass der Elastomerüberzug (21) aus einem Material vom Typ Gummi besteht, das eine Shore-Härte zwischen 65 und 70 Shore aufweist.
  7. Anlage nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, dass der Elastomerüberzug (21) aus einem Material besteht, an dem die Beschichtungszusammensetzung nicht anhaftet.
  8. Anwendung des Verfahrens nach einem der Ansprüche 1 oder 2 oder der Anlage nach einem der Ansprüche 3 bis 7 zur Beschichtung von Trägern großer Breite, typischerweise in der Größenordnung von 4 m, für Bodenbelagsprodukte aus Kunststoff, die PVC enthalten.
EP20000988523 2000-12-22 2000-12-22 Verfahren und vorrichtung zur indirekten auftragung einer dünnen schicht Expired - Lifetime EP1343595B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BE2000/000156 WO2002051556A1 (fr) 2000-12-22 2000-12-22 Procede d'enduction indirect en couche mince et dispositif a cet effet

Publications (2)

Publication Number Publication Date
EP1343595A1 EP1343595A1 (de) 2003-09-17
EP1343595B1 true EP1343595B1 (de) 2004-09-08

Family

ID=3862557

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000988523 Expired - Lifetime EP1343595B1 (de) 2000-12-22 2000-12-22 Verfahren und vorrichtung zur indirekten auftragung einer dünnen schicht

Country Status (12)

Country Link
EP (1) EP1343595B1 (de)
AT (1) ATE275439T1 (de)
BG (1) BG107924A (de)
CZ (1) CZ300433B6 (de)
DE (1) DE60013652T2 (de)
ES (1) ES2226972T3 (de)
HR (1) HRP20030352A2 (de)
HU (1) HUP0302607A3 (de)
PL (1) PL198199B1 (de)
SK (1) SK286673B6 (de)
UA (1) UA73224C2 (de)
WO (1) WO2002051556A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111507309B (zh) * 2020-05-20 2020-12-01 孟庆峰 农作物种植状态解析系统

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2326429A (en) * 1941-05-01 1943-08-10 John E Black Glue spreader, surface coater, and the like
SE465709B (sv) * 1990-04-03 1991-10-21 Btg Kaelle Inventing Ab Foerfarande foer tvaasidig bestrykning av en loepande bana medelst tvaa motstaellda oeverfoeringsvalsar
ES2063563T3 (es) * 1991-10-03 1995-01-01 Casco Nobel Ab Metodo de pegado.
WO1994027738A1 (en) * 1993-05-28 1994-12-08 Tybar Engineering Pty Ltd Adhesive application system
DE19600238A1 (de) 1996-01-05 1997-07-10 Dewitta Spezialmaschf Vorrichtung zur Umwandlung einer Dreh- in eine Axialbewegung

Also Published As

Publication number Publication date
UA73224C2 (en) 2005-06-15
HUP0302607A2 (hu) 2003-11-28
SK8602003A3 (en) 2004-03-02
HRP20030352A2 (en) 2005-04-30
ES2226972T3 (es) 2005-04-01
PL363287A1 (en) 2004-11-15
SK286673B6 (sk) 2009-03-05
DE60013652T2 (de) 2005-09-15
BG107924A (bg) 2004-01-30
DE60013652D1 (de) 2004-10-14
CZ300433B6 (cs) 2009-05-20
PL198199B1 (pl) 2008-06-30
CZ20031331A3 (cs) 2003-10-15
WO2002051556A1 (fr) 2002-07-04
EP1343595A1 (de) 2003-09-17
ATE275439T1 (de) 2004-09-15
HUP0302607A3 (en) 2004-03-29

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