EP0794855B1 - Vorrichtung und verfahren zur behandlung von oberflächen - Google Patents

Vorrichtung und verfahren zur behandlung von oberflächen Download PDF

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Publication number
EP0794855B1
EP0794855B1 EP95940241A EP95940241A EP0794855B1 EP 0794855 B1 EP0794855 B1 EP 0794855B1 EP 95940241 A EP95940241 A EP 95940241A EP 95940241 A EP95940241 A EP 95940241A EP 0794855 B1 EP0794855 B1 EP 0794855B1
Authority
EP
European Patent Office
Prior art keywords
transfer belt
coating material
applicator
application
belt
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
EP95940241A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0794855A1 (de
Inventor
Rainer Hasenkamp
Wigand STÄHLIN
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0794855A1 publication Critical patent/EP0794855A1/de
Application granted granted Critical
Publication of EP0794855B1 publication Critical patent/EP0794855B1/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
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
    • 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
    • B05C1/006—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 the edges of essentially flat articles
    • 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
    • B05C1/14—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 travelling band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/40—Distributing applied liquids or other fluent materials by members moving relatively to surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D5/00—Other working of veneer or plywood specially adapted to veneer or plywood
    • B27D5/003—Other working of veneer or plywood specially adapted to veneer or plywood securing a veneer strip to a panel edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N7/00—After-treatment, e.g. reducing swelling or shrinkage, surfacing; Protecting the edges of boards against access of humidity
    • B27N7/005—Coating boards, e.g. with a finishing or decorating layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31551—Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.]
    • Y10T428/31591—Next to cellulosic
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31725—Of polyamide
    • Y10T428/31779—Next to cellulosic
    • Y10T428/31783—Paper or wood
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31786—Of polyester [e.g., alkyd, etc.]
    • Y10T428/3179—Next to cellulosic

Definitions

  • the invention relates to a method or a device for treating surfaces.
  • Wood materials are not in their original form Leave appearance, but get one finishing surface coating. Usually acts it is a melamine coating. Veneers, decorative laminates or decorative films are also used as coating material.
  • edge banding The coating of side surfaces, edges or generally from narrow areas is often done by a special edge material.
  • a special edge material For example it is a edge band or a so-called Narrow area belt, which by means of a Glue is applied to the narrow surfaces. This process is commonly called edge banding designated.
  • One way to do a surface coating consists of the coating material as edge material to use the top and bottom.
  • the coating material on the top or bottom of a applied to the plate material to be coated This is preferably done using a dispersion adhesive.
  • Edge usually has sufficient material protrusion, the appropriate way, usually through the addition of heat.
  • the surfaces to be coated have often large bumps, blowholes, etc. on. This applies in particular to chipboard.
  • Such a surface condition leads to coating with one of the specified methods to a strikingly restless, "humped", wavy material surface that has the look, for example of the later piece of furniture.
  • the material thickness is also an increase the restoring force of the bent coating material connected. This in turn requires an extended one Pressure path for gluing such stiffer coating material.
  • thicker coating materials in usually more expensive.
  • GB-A-745 057 also describes a method for the treatment of Surfaces known, being a thermoplastic Coating material is applied to the surface and that applied coating material by means of a Surface of the band passing by is then smoothed.
  • the object of the present invention is therefore in being a process, respectively Specify device with or with which eliminates the aforementioned drawbacks and a surface smoothing treatment is possible in a simple manner.
  • the coating material is by means of a transfer belt applied to the surface.
  • This has the advantage that for the Order of the material does not match the profile of the Coating roller adapted to the coating surface necessary is.
  • the transfer belt also used as a smoothing belt, so that on smoothing rollers or on smoothing shoes can be dispensed with. Another savings effect is the consequence.
  • the application of the coating material is preferred on the surface to be treated Press force accomplished.
  • a suitable printing device acts on the tape on the uncoated Side with a force that pushes the coated transfer belt side to the coating surface causes.
  • An improvement in the material order is made through additional heat treatment of the coating material achieved.
  • the coating material immediately before the order on the surface to be coated onto the transfer belt upset.
  • the order is preferably placed via an appropriate applicator roller or Application nozzle that the material to be set in a Material thickness brings on the transfer belt.
  • the material to be set in a Material thickness brings on the transfer belt.
  • the transfer belt is removed from the patient to be treated Surface peeled off, taking the material beforehand penetrated into the pores of the surface to be treated and is solidified, so that this when pulling off of the transfer ribbon does not stick to it.
  • the removed transfer belt back to the application roller returned so that the use of a Endless belt is possible.
  • the present invention is illustrated by way of example several embodiments with reference to a drawing explained in more detail.
  • the shows single figure is a schematic representation of a Transfer coating device, based on which also the method according to the invention is described.
  • the conveyor belt 5 is about appropriate, not in the figure shown drive units driven and transported the chipboard 1 in the arrow indicated direction, in the drawing from from left to right.
  • the conveyor belt 5 there are several at a distance in a pressure zone 7 mutually arranged printing devices 9.
  • pressure and / or sliding shoes 9 This is preferably pressure and / or sliding shoes 9. Pressure rollers or a combination from pressure rollers and sliding shoes 9 can however, can also be used.
  • a transfer belt 11 is unwound, which the Pressure zone 7 between the conveyor belt 5 respectively the chipboard 1 and the printing device 9 passes through and another roll 15 is rewound.
  • the drive device usually acts for the transport of the transfer belt 11 with the other role 15 together.
  • the transport speed of the Transfer bands of the transport speed of the Chipboard 1 corresponds to the drive speed the further role 15 depending on the waked Diameter set.
  • the control mechanism for the further roller 15 can omitted if instead of the unwound from the roll 13 Conveyor belt an endless transfer belt 11, which is shown in broken lines in the figure is used. Instead of the two rollers 13 and 15 are different pulleys in this case 17 necessary after the transfer belt 11 Pass through pressure zone 7 back to the beginning to lead.
  • the endless transfer belt 11 is used by the coating plates 1 with drawn; it can also a separate drive can be provided.
  • an application nozzle or an applicator roller 19 is arranged in the transport direction in front of the pressure zone 7 . Opposite her there is a pressing device 21, wherein the transfer belt 11 between these two elements is passed through. In the figure is not shown that the applicator roller 19th with a coating material is supplied.
  • the application roller 19 has one suitable for the application of flowable material Surface that may have dents, grooves or the like has to the material application thickness across the width of the roller or Change transfer bands. With an application nozzle the nozzle slot is widened accordingly or narrowed to also a variable across the width To achieve material thickness.
  • a fixing roller 23 is provided which the transfer belt 11 in a first adhesive contact with the coating narrow surface 3 brings.
  • the Transfer belt 11 detaches adhering impurities.
  • 5 is at the end of the conveyor belt schematically shows a processing area 27, in which, for example, regrinding the edges or the actual softforming or Postforming process is carried out.
  • the thing to be applied Material is fed over the application roller 19 applied to one side of the transfer belt 11.
  • the conveyor belt 5 are transported, works the application roller 19 preferably at intervals. It starts with the application when the one to be coated Chipboard 1 still a transport route to pass through the fixing roller 23, the transport route the transfer belt 11 to the fixing roller 23 corresponds; thus the beginning of the strikes with material wetted transfer ribbon section with the front Edge of the chipboard on the fixing roller 23 together.
  • the length of the wetted transfer belt section corresponds to the edge length of the Narrow area 3.
  • Such an interval control is very easily via appropriate sensors, for example Photoelectric sensors arranged in suitable places are realizable.
  • the pressure device 21 ensures when applying the Materials that the transfer belt does not give in or evade the pressure of the application roller. she thus serves as an abutment.
  • the fixing roller 23 then brings the coated Transfer belt 11 in contact with the Narrow area 3, so that a first fixation of the Transfer belt 11 takes place on the narrow surface 3.
  • the transfer belt 11 When the chipboard 1 enters the pressure zone 7 is preferably the transfer belt 11 first a certain, adjustable force against the Closest to the pressure or sliding block Section of the narrow surface 3 pressed.
  • the pressing / pressing force must be so great be that the material fits well in the Pores of the narrow surface 3 penetrates.
  • the first Pressure or sliding shoe 9 following another Pressure or sliding shoes are like this positioned that to the end of pressure zone 7 too the other areas of the narrow surface 3 with one Contact pressure are applied.
  • the pressure respectively Sliding shoes are preferred to the Adjusted contour of the narrow surface 3.
  • the length of the pressure zone 7 or Transport speed of the chipboard 1 must be designed so that applied to the narrow surface 3 Material until it leaves the printing zone 7 has hardened to ensure good anchoring of the Material in the narrow surface to reach.
  • the transfer belt 11 is connected to the printing zone 7 removed from the chipboard 1 again.
  • the chipboard 1 with the coated narrow surface 3 is then transported into the processing area 27, in which the actual edge banding in Softforming or postforming processes is carried out. Because the material the originally existing bumps on the Narrow area 3 compensates and a very smooth Surface delivers is a flawless smooth final narrow surface coating with the above known methods possible.
  • the effect of the pressure or sliding shoes 9 in the pressure zone 7 can be caused by additional heat, for example by infrared emitters, High frequency radiator or hot air blower, increased become. Improved by the higher temperature the fluidity of the material, so that this better and deeper in the pores the narrow surface 3 can penetrate. At the same time or even before reaching the fixing roller 23 also the narrow surface 3 of the particle board to be coated 1 heated, for example, by infrared radiation be, which has the effect just mentioned can be strengthened.
  • the material itself has to be procured in this way be that it is at the usual usage temperatures of furniture that is usually between -10 ° to 100 ° C, not softened and maintains its strength.
  • the Softening point chosen so high that with machine Smooth grinding or smooth polishing Frictional heat does not become an undesirable Softening the Leads.
  • the softer material in this case the sanding belts would be relative smear quickly and therefore prematurely unusable do.
  • the im for example subsequent softforming or Hot applied postforming process Hot melt adhesive does not soften to a high degree and thus possibly to an unwanted deformation of the pretreatment of the narrow surfaces lead applied material.
  • hot melt applicators should be able to use it in a temperature range of 150 ° - 250 ° C, preferably 180 ° - 230 ° C sufficient be flowable. Good flowability of the material is important in that it does that Transfer belt can wet better, better on the narrow surface 3 to be coated can be applied and moreover better in the pores of the particle board can penetrate. Too much penetration too is avoided, the one facing away from the narrow side Side of the coating or the conveyor belt cooled, for example by means of a Cold air shower or a cooling roller. It freezes the part of the coating material touching the conveyor belt very quickly, so less in the surface "sagging".
  • the necessary length of stay the chipboard 1 in the pressure zone 7 can be shortened. Otherwise, the transfer belt 11 of better peel off a completely solidified material.
  • the material used is easy to stick, that is, that there is a glue to the adhesive applied in later processes has high affinity.
  • reactive thermoplastics for example isocyanate-terminated PUR prepolymer in addition to 2-component systems based on epoxy / amine or UV-curing systems based on acrylate, Methacrylate or unsaturated polyester for the production of Thermosets can be used.
  • the one that serves as the carrier for the coating material Transfer belt must be flexible enough to by means of the pressure shoes 9 or pressure rollers, easy to conform to the contour of the narrow surface 3 to be.
  • the transfer belt 11 must further be heat stable, so that it is in the high application temperatures of the Material is not permanently deformed. Furthermore it should also be due to a rapid succession of warming and cooling, as is particularly the case with the Use as an endless belt occurs, insensitive his.
  • thermosetting edgebands highlighted on paper. All of these Common to all materials is that they are sufficient low affinity for thermoplastic material have so that the transfer belt easily from the pre-treated chipboard is removable.
  • this material can be used as an adhesive. requirement this is, however, that the narrow surface is complete or at least all critical points for a good adhesive bond Narrow area covered with the material are.
  • the quality of the narrow surface 3 applied material so selected be that a pretreated or coated narrow surface without further finishing can be painted or coated with a hot stamping foil.
  • the applied material solidifies after the Coating like a common thermoplastic, will but then chemically to a thermoset, for example under the influence of heat or moisture.
  • Such reactive hot melt adhesives are based on polyurethane known.
  • the solidified coating composition which has reacted in this way is Heat, water and shockproof as well as chemically resistant.
  • Color pigments can also be added to the coating material mix, so that a ready-to-use Edge with the desired color can be achieved is.
  • the crosslinked coating mass can also be painted, however a paint system must be selected, the solvent the not yet hardened coating mass does not swell or even dissolve.
  • a water-based paint system offers a water-based paint system.
  • the coating composition should be after curing an optically pleasing structure, for example have a wood grain structure, that is still non-crosslinked coating mass with the help of Machining possiblee rollers.
  • the embossing rollers must however, have an adhesive surface so they easily detach from the coating material and do not damage them.
  • the coating process described is particularly for wood-based materials, such as solid wood, chipboard or MDF (Medium Densitive Fiber). It can also be coated with plastic materials or metals With the help of the procedure described.
  • wood-based materials such as solid wood, chipboard or MDF (Medium Densitive Fiber). It can also be coated with plastic materials or metals With the help of the procedure described.
  • MDF Medium Densitive Fiber
  • the coating material also offers Protection against mechanical stress.
  • Metal rails on the edges of concrete formwork boards through a Coating can be replaced with a material that becomes a thermoset hardens.
  • other areas of application are also conceivable.
  • Impregnation resin can e.g. pure melamine resin or melamine / urea resin blends consist.
  • Such impregnated papers will be in the chipboard industry for direct coating of wood-based panels in various presses - multi-day, short-cycle, continuous presses - used. If the same resin-impregnated paper is used both for Coating the top and bottom (wide areas) as well as Laminating the smoothed narrow surface of the wood-based panel used then you get workpieces that all around on all surfaces have the same thermosetting surface material.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
EP95940241A 1994-11-29 1995-11-24 Vorrichtung und verfahren zur behandlung von oberflächen Expired - Lifetime EP0794855B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4442397 1994-11-29
DE4442397 1994-11-29
PCT/EP1995/004642 WO1996016777A1 (de) 1994-11-29 1995-11-24 Vorrichtung und verfahren zur behandlung von oberflächen

Publications (2)

Publication Number Publication Date
EP0794855A1 EP0794855A1 (de) 1997-09-17
EP0794855B1 true EP0794855B1 (de) 2000-06-14

Family

ID=6534410

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95940241A Expired - Lifetime EP0794855B1 (de) 1994-11-29 1995-11-24 Vorrichtung und verfahren zur behandlung von oberflächen

Country Status (8)

Country Link
US (1) US6180172B1 (da)
EP (1) EP0794855B1 (da)
AT (1) ATE193856T1 (da)
CA (1) CA2206419A1 (da)
DE (2) DE19543901A1 (da)
DK (1) DK0794855T3 (da)
FI (1) FI972260A0 (da)
WO (1) WO1996016777A1 (da)

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US8734927B2 (en) 2011-10-19 2014-05-27 Ultra Tech Extrusions Of Tennessee Green multi-polymer T-molding
DE102013216113A1 (de) 2013-08-14 2015-03-05 Homag Holzbearbeitungssysteme Gmbh Beschichtungsaggregat
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PL3187320T3 (pl) * 2015-12-29 2021-04-06 Michael Karau Sposób mocowania mających kształt taśmy wyrobów płaskich, w szczególności taśm krawędziowych na wąskich bokach przedmiotów obrabianych
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WO1996016777A1 (de) 1996-06-06
US6180172B1 (en) 2001-01-30
DE19543901A1 (de) 1996-05-30
DK0794855T3 (da) 2000-11-06
CA2206419A1 (en) 1996-06-06
FI972260A (fi) 1997-05-28
EP0794855A1 (de) 1997-09-17
ATE193856T1 (de) 2000-06-15
DE59508476D1 (de) 2000-07-20
FI972260A0 (fi) 1997-05-28

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