EP1216759A2 - Verfahren und Anlage zur Herstellung von einer hochabriebfesten Beschichtung insbesondere für Bodenbeläge und Werkstückoberflächen - Google Patents

Verfahren und Anlage zur Herstellung von einer hochabriebfesten Beschichtung insbesondere für Bodenbeläge und Werkstückoberflächen Download PDF

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Publication number
EP1216759A2
EP1216759A2 EP01130594A EP01130594A EP1216759A2 EP 1216759 A2 EP1216759 A2 EP 1216759A2 EP 01130594 A EP01130594 A EP 01130594A EP 01130594 A EP01130594 A EP 01130594A EP 1216759 A2 EP1216759 A2 EP 1216759A2
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EP
European Patent Office
Prior art keywords
mixture
sheet material
fountain
abrasion
applying
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Granted
Application number
EP01130594A
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English (en)
French (fr)
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EP1216759B1 (de
EP1216759A3 (de
Inventor
Umberto Tocchio
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Tocchio Srl
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Tocchio Srl
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Publication of EP1216759A3 publication Critical patent/EP1216759A3/de
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    • 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
    • B05C1/086—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 a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
    • 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
    • B05C1/0813—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 characterised by means for supplying liquid or other fluent material to the roller
    • 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
    • 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
    • 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
    • B05C1/086—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 a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
    • B05C1/0865—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 a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith the cooperating element being a roller, e.g. a coating roller
    • 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
    • B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
    • B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
    • B05C11/1039—Recovery of excess liquid or other fluent material; Controlling means therefor
    • 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
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B44C5/0469—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper
    • B44C5/0476—Ornamental plaques, e.g. decorative panels, decorative veneers comprising a decorative sheet and a core formed by one or more resin impregnated sheets of paper with abrasion resistant properties
    • 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
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/18—Paper- or board-based structures for surface covering
    • D21H27/22—Structures being applied on the surface by special manufacturing processes, e.g. in presses
    • D21H27/26—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures
    • D21H27/28—Structures being applied on the surface by special manufacturing processes, e.g. in presses characterised by the overlay sheet or the top layers of the structures treated to obtain specific resistance properties, e.g. against wear or weather
    • 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
    • B05C1/12—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 fed round the roller

Definitions

  • the present invention relates to a method and unit for producing highly abrasion-resistant protective coverings, particularly for floor and work surfaces, but which may also be used for other applications (e.g. walls or furniture).
  • laminated panels are widely used for covering floors, as an alternative to conventional woodblock floors, or for covering walls, furniture, etc., and normally comprise a number of layers of sheet material (e.g. paper or fabric) impregnated with thermosetting polymer resin (e.g. phenolic, urea, melamine resins or mixtures of these) and which are gripped and compressed under heat (consequent polymerization/cross-linking of the resin compacts the layers to form the panel).
  • thermosetting polymer resin e.g. phenolic, urea, melamine resins or mixtures of these
  • the eventually visible layer is normally patterned to reproduce a given design (e.g. a given wood grain), and the patterned layer is covered with a protective abrasion-resistant covering or so-called “overlay” containing powdered aluminium oxide Al 2 O 3 (corundum) or other abrasion-resistant substances.
  • a protective abrasion-resistant covering or so-called “overlay” containing powdered aluminium oxide Al 2 O 3 (corundum) or other abrasion-resistant substances.
  • an overlay paper is known to be used, in which corundum particles are incorporated directly, and which is then impregnated with resin, applied on the patterned layer, and hot-pressed.
  • the method of producing powdered corundum paper is extremely expensive and complicated, and fails to ensure uniform particle distribution (essential for good abrasion resistance).
  • abrasion-resistant powder is applied to a wet preimpregnated substrate (i.e. impregnated with resin not yet dried or cross-linked) prior to the final pressing. More specifically, in EP-A-329154, pure abrasion-resistant powder is applied directly to the wet preimpregnated substrate; whereas, in DE-A-19814212, abrasion-resistant powder is dispersed in a resin, and the mixture sprayed on to the wet preimpregnated substrate.
  • the abrasion-resistant powder is applied to a wet preimpregnated substrate, and neither completely solves the problem of uniform dispersion of the abrasion-resistant powder, so that the resulting laminates are not always satisfactory in terms of abrasion resistance.
  • the method according to the invention comprises the steps of: a) preparing a mixture of a powdered abrasion-resistant substance dispersed evenly in a first thermosetting polymer resin; b) providing a substantially dry sheet material; c) applying and distributing said mixture evenly on at least one surface of said substantially dry sheet material; d) drying said sheet material coated with said mixture to form a covering incorporating said powdered abrasion-resistant substance.
  • thermosetting polymer resins employed according to the present invention are water-base resins selected, for example, from the group comprising melamine, phenolic, urea resins and mixtures of these; and the powdered abrasion-resistant substance is aluminium oxide (Al 2 O 3 , corundum).
  • the sheet material has a relatively low wet residue of volatile substances, in particular, below approximately 14% by weight (determined in an oven at 160° for 5 minutes).
  • the sheet material may be nonimpregnated paper material or preimpregnated so-called "prepreg” sheet material; in which latter case, the method comprises the steps of: i) impregnating said sheet material with a second thermosetting polymer resin; ii) drying said preimpregnated sheet material to cross-link said second thermosetting polymer resin; and, iii) applying and distributing said mixture evenly on at least one surface of the dried said preimpregnated sheet material.
  • the dried preimpregnated sheet material has a low wet residue of volatile substances, in particular, of 7 to 14% by weight (determined in an oven at 160° for 5 minutes).
  • thermosetting polymer resin mixed with the abrasion-resistant substance is continuously agitated and kept in preferably turbulent motion, both when preparing the mixture and when applying the mixture to the sheet material, to prevent the powdered abrasion-resistant substance (which has a higher density than the resin in which it is dispersed) from settling, and to ensure it is evenly distributed in the resin when applied to the sheet material. Turbulent motion of the mixture has proved particularly advantageous.
  • the step of applying the resin and abrasion-resistant substance mixture is performed using a dispenser-applicator device comprising a fountain, and at least one applicator roller positioned substantially contacting said first surface of the sheet material along a generating line of contact to transfer said mixture from said fountain to said first surface, whereas, on a second surface, opposite said first surface, of the sheet material and at said generating line of contact, no support for said sheet material is provided.
  • a dispenser-applicator device comprising a fountain, and at least one applicator roller positioned substantially contacting said first surface of the sheet material along a generating line of contact to transfer said mixture from said fountain to said first surface, whereas, on a second surface, opposite said first surface, of the sheet material and at said generating line of contact, no support for said sheet material is provided.
  • the method also comprises a step of recirculating the resin and abrasion-resistant substance mixture, in which said mixture dispensed by said fountain and not deposited on said first surface of the sheet material is recirculated back to said fountain.
  • At least one viscosity-control additive selected from the group comprising filmogens and preferably capable of thermal three-dimensional cross-linking, may be added to the mixture.
  • Good results have been obtained, for example, using a viscosity regulator of polyvinyl alcohol (PVA), which also keeps the volatile substances in the mixture low (below approximately 5% by weight) and so prevents powder dispersion in the workplace. Once dehydrated, PVA also leaves a film which does not affect the original colour of the paper (or other substrate) on which it is applied.
  • PVA polyvinyl alcohol
  • thermosetting polymer resin which is in turn dried and/or polymerized-cross-linked.
  • This third resin hereinafter referred to as "protective resin”
  • the protective resin may be applied 100% dry or in a wet phase, and may or may not contain various additives, cross-linking-polymerization catalysts, etc.
  • a particle filler in the form of microspheres, granules, powder, crystals, etc.
  • nonabrasive or relatively nonabrasive solid substances e.g. metal oxides, silicates or ceramics
  • the function of the protective-resin layer is to prevent wear of the plates (normally chromium-plated) used to hot-press the covering. Applying the protective resin, preferably with a particle filler, prevents the plates from coming into direct contact with the very hard abrasion-resistant substance in the underlying layer, and so protects the plates against relatively rapid wear.
  • the protective resin (possibly with a dispersed particle filler) may also be applied using a dispenser-applicator device identical to that used to apply the first thermosetting polymer resin and powdered abrasion-resistant substance mixture.
  • the step of applying the resin and abrasion-resistant substance mixture and the step of drying the sheet material coated with the mixture may be performed repeatedly to form respective superimposed cover layers.
  • the step of applying the protective resin (with or without the filler) may also be repeated to form respective superimposed layers.
  • Both the step of drying the sheet material coated with the resin and abrasion-resistant substance mixture and the step of drying the protective resin may be conducted to only dry the polymer components by more or less drastic removal of the volatile substances, or to produce a complete or only partial polymerization-cross-linking reaction of the polymer components.
  • the drying steps may be conducted in a tunnel furnace, or by infrared or ultraviolet lamp or electron beam radiation.
  • the sheet material coated with the resin and abrasion-resistant substance mixture (and possibly also the protective resin) is ready for use, e.g. for the next (known) hot-pressing step in which the polymerization-cross-linking reaction of the polymer resins may be completed.
  • Buffered acid catalysts are preferably added to the resin and abrasion-resistant substance mixture to control the cross-linking reaction. More specifically, the catalysts are such as to bring about the cross-linking reaction, in 100°C boiling water conditions, in about 200 seconds, and at any rate in less than 4 minutes.
  • the sheet material impregnated with the resin and abrasion-resistant substance mixture (and possibly with the protective-resin layer) is pressed to achieve a high degree of cross-linking (the viscosity-control additive is advantageously also a three-dimensional cross-linking agent for enhancing cross-linking, such as PVA).
  • the method according to the invention is easy and relatively cheap to implement; the unit implementing it is cheap and easy to produce and operate; and coverings produced using the method and unit according to the invention have proved more resistant to abrasion than similar coverings or panels produced using known methods, as confirmed by comparative tests. More specifically, abrasion tests were conducted (in accordance with proposed European standard pr-EN-13329, not yet in force but already adopted in the industry as a reference standard) of coverings produced according to the invention, and similar coverings produced using conventional methods : the coverings produced according to the invention were classed AC3 (suitable for heavy-duty flooring), as compared with class AC2 for conventional coverings. The method according to the invention is therefore not only easier to implement and more effective than known methods, but also provides for obtaining better results.
  • Number 1 in Figure 1 indicates as a whole a unit for producing highly abrasion-resistant protective coverings, in particular for floor and work surfaces.
  • Unit 1 comprises preparing means 2 for preparing a mixture 3 containing a powdered abrasion-resistant substance 4 dispersed evenly in a liquid thermosetting polymer resin 5; feed means 6 for feeding a sheet material 7; a dispenser-applicator device 8 for applying mixture 3 on to a first surface 9 of sheet material 7; and drying means 10 downstream from dispenser-applicator device 8.
  • preparing means 2 comprise two tanks 11, 12 arranged in series and having respective agitators 13, 14; and a feeder 15 (e.g. a screw) for feeding abrasion-resistant substance 4 into tank 11.
  • Tank 12 is connected to dispenser-applicator device 8 by a feed line 16 fitted with a circulating pump 17; a recirculating line 18 feeds part of the mixture 3 drawn from tank 12 back into tank 12; and circulating pump 17 keeps mixture 3 in constant, preferably turbulent, motion between tank 12 and dispenser-applicator device 8.
  • Means 6 for feeding sheet material 7 are known and therefore not described or illustrated in detail for the sake of simplicity.
  • Dispenser-applicator device 8 comprises a fountain 19; and at least one applicator roller 20 positioned substantially contacting first surface 9 of sheet material 7 along a generating line of contact.
  • Supporting means 21, 22 for supporting sheet material 7 and defined, in the example shown, by respective rollers are provided on opposite sides of applicator roller 20 to keep the sheet material suspended; and, at the generating line of contact of applicator roller 20, a second surface 23, opposite first surface 9, of sheet material 7 has no support, so that sheet material 7 simply spans rollers 21 and 22.
  • Dispenser-applicator device 8 also comprises agitating means 24 defined, for example, by a powered arm 25 moving inside fountain 19 to continuously agitate and keep the mixture 3 inside fountain 19 in preferably turbulent motion.
  • agitating means 24 defined, for example, by a powered arm 25 moving inside fountain 19 to continuously agitate and keep the mixture 3 inside fountain 19 in preferably turbulent motion.
  • Unit 1 also comprises recirculating means 26 for recirculating mixture 3 from dispenser-applicator device 8 to tank 12, and which comprise a catch tank 27 located beneath dispenser-applicator device 8 and facing second surface 23 of sheet material 7, and a recirculating line 28 connecting catch tank 27 to tank 12 and fitted with a recirculating pump 29.
  • Unit 1 may also comprise finish rollers 30 of any known type downstream from dispenser-applicator device 8 and upstream from drying means 10.
  • FIGS 2 and 3 show various detailed embodiments of dispenser-applicator device 8.
  • dispenser-applicator device 8 comprises applicator roller 20 and a dispensing roller 31 : applicator roller 20 and dispensing roller 31 are positioned side by side along respective generating lines, are separated by an axial gap through which mixture 3 flows, and together define fountain 19; the mixture 3 from preparing means 2 is fed between applicator roller 20 and dispensing roller 31; applicator roller 20 transferring mixture 3 from fountain 19 to sheet material 7 is positioned contacting surface 9 (the top surface) of sheet material 7; and dispensing roller 31 is detached from sheet material 7.
  • the rotation direction of applicator roller 20 is such that, at the point at which the mixture is applied, applicator roller 20 moves in the opposite direction to sheet material 7.
  • dispenser-applicator device 8 may obviously be located beneath sheet material 7, as shown in the Figure 2b variation (in which case, surface 9 of the sheet material to which mixture 3 is applied is the bottom surface).
  • Dispensing roller'31 may rotate in the opposite direction to applicator roller 20 (as shown by the continuous arrows in Figures 2a and 2b) or in the same direction (as shown by the dash arrows).
  • dispenser-applicator device 8 comprises an applicator roller 20; and two dispensing rollers 31, 32 detached from sheet material 7 and positioned facing each other a small distance apart to define fountain 19.
  • Applicator roller 20 is positioned contacting sheet material 7 and facing dispensing roller 31.
  • Dispensing rollers 31, 32 may, obviously, be positioned otherwise than as shown with respect to applicator roller 20 and sheet material 7.
  • dispensing rollers 31, 32 are aligned in a direction substantially parallel to sheet material 7.
  • Dispensing rollers 31, 32 may be rotated in opposite directions (as shown by the continuous arrows in Figures 2c and 2d) or in the same direction (as shown by the dash arrows).
  • dispenser-applicator device 8 comprises an applicator roller 20 contacting sheet material 7; and a doctor 33 cooperating in sliding manner with applicator roller 20.
  • fountain 19 is defined between applicator roller 20 and doctor 33, and the mixture 3 from preparing means 2 is fed between applicator roller 20 and doctor 33.
  • the rotation direction of applicator roller 20 may be such that, at the point at which mixture 3 is applied to sheet material 7, applicator roller 20 moves in the opposite direction to sheet material 7 (as shown in Figure 2).
  • the rotation direction of applicator roller 20 may be such that, at the point at which mixture 3 is applied to sheet material 7, applicator roller 20 moves in the same direction as sheet material 7, as shown in Figure 3 (which shows the same embodiments of dispenser-applicator device 8 as in Figure 2, but with applicator roller 20 rotating in the opposite direction).
  • Abrasion-resistant substance 4 and resin 5 are fed into and mixed and agitated continuously in tank 11 (possibly together with the additives and catalysts mentioned previously); when abrasion-resistant substance 4 is evenly dispersed in resin 5, mixture 3 is drained into tank 12, mixed further, and fed along feed line 16 to fountain 19; and, in the meantime, dry sheet material 7 (which may be a strip of paper or other nonimpregnated material or a dried preimpregnated material) is supplied.
  • dispenser-applicator device 8 By means of dispenser-applicator device 8, mixture 3 is applied and spread evenly on surface 9 of sheet material 7; sheet material 7 spread with mixture 3 is then fed to drying means 10 (e.g. an oven) from which emerges a covering 35 comprising a substrate defined by sheet material 7, and a layer of resin 5 incorporating powdered abrasion-resistant substance 4.
  • drying means 10 e.g. an oven
  • Circulating pump 17, recirculating pump 29, and agitators 13, 14 continuously agitate and keep mixture 3 in preferably turbulent motion to prevent abrasion-resistant substance 4 (which has a higher density than resin 5) from settling.
  • Mixture 3 is applied by dispenser-applicator device 8 by means of applicator roller 20, which transfers mixture 3 from fountain 19 to sheet material 7. Any mixture 3 not deposited on sheet material 7 (e.g. dripping from the axial ends of applicator roller 20) is collected in tank 27 and recirculated. Not providing any support for sheet material 7 on the surface 23 side opposite surface 9 prevents mixture 3 from depositing on and impairing operation of a contrast roller or other mechanical member.
  • the amount of mixture 3 dispensed by dispenser-applicator device 8 and applied to sheet material 7 may be controlled effectively by regulating the rotation speed of applicator roller 20 and/or dispensing rollers 31, 32.

Landscapes

  • Laminated Bodies (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
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EP01130594A 2000-12-22 2001-12-21 Verfahren und Anlage zur Herstellung von einer hochabriebfesten Beschichtung insbesondere für Bodenbeläge und Werkstückoberflächen Expired - Lifetime EP1216759B1 (de)

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EP1488938A1 (de) * 2003-06-18 2004-12-22 Tocchio S.r.l. Verfahren zur Herstellung von Dekorfolien
EP1502661A3 (de) * 2003-07-28 2008-11-19 Robert Bürkle GmbH Vorrichtung zum Aufbringen von Lack auf plattenförmige Werkstücke
ITMI20090680A1 (it) * 2009-04-22 2010-10-23 Pietro Cassaghi Procedimento e impianto per la fabbricazione di carte decorative e/o pannelli da pavimentazione o rivestimento di mobili, pareti, eccetera
ITPD20090329A1 (it) * 2009-11-04 2011-05-05 Monti Antonio Spa Dispositivo spalmatore di film collanti su supporti con superficie irregolare, come tavole di legno e simili
EP2942110A3 (de) * 2014-04-14 2016-01-06 tesa SE Beschichtungsverfahren mit seitlichem zulauf
CN105903632A (zh) * 2016-06-20 2016-08-31 张家港市新港星科技有限公司 一种彩钢板的涂覆装置
CN106320071A (zh) * 2016-08-24 2017-01-11 苏州市冠品工贸有限公司 一种自带耐磨印刷纸的生产工艺
CN107670901A (zh) * 2016-08-01 2018-02-09 普罗科技有限公司 用于电磁干扰屏蔽的浆液分配设备
CN108380456A (zh) * 2018-04-30 2018-08-10 中航锂电（江苏）有限公司 一种锂离子电池涂布机浆料循环装置
CN113171928A (zh) * 2021-05-12 2021-07-27 杭州彩高科技有限公司 一种胶水循环辊下式涂胶装置及方法

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USRE30691E (en) * 1972-03-27 1981-07-28 Method of applying a wearing surface
US4675208A (en) * 1983-12-29 1987-06-23 Konishiroku Photo Industry Co., Ltd. Coating method and apparatus
US4968538A (en) * 1987-01-14 1990-11-06 Freecom, Inc. Abrasion resistant coating and method of application
EP0511129A1 (de) * 1991-04-18 1992-10-28 Etablissements Elce Verfahren zur Herstellung von einer mit einer Gleitschutzseite und der anderen klebenden Seite flächigen Vorlage, und hergestellte Vorlage
US5306523A (en) * 1992-04-16 1994-04-26 Fuji Photo Film Co., Ltd. Method of applying organic solvent-based coating solution
DE19814212C1 (de) * 1998-03-31 1999-09-02 Vits Maschinenbau Gmbh Vorrichtung zum Auftragen einer abrasiven Beschichtungsmasse auf eine durchlaufende Papierbahn
WO2002043879A1 (en) * 2000-12-01 2002-06-06 Bhp Steel (Jla) Pty. Ltd. Method of coating a substrate

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1488938A1 (de) * 2003-06-18 2004-12-22 Tocchio S.r.l. Verfahren zur Herstellung von Dekorfolien
EP1502661A3 (de) * 2003-07-28 2008-11-19 Robert Bürkle GmbH Vorrichtung zum Aufbringen von Lack auf plattenförmige Werkstücke
ITMI20090680A1 (it) * 2009-04-22 2010-10-23 Pietro Cassaghi Procedimento e impianto per la fabbricazione di carte decorative e/o pannelli da pavimentazione o rivestimento di mobili, pareti, eccetera
WO2010121971A3 (en) * 2009-04-22 2011-02-03 Maurizio Nasatti Process and apparatus for manufacturing decorative papers and/or panels for flooring or surfacing of furniture, walls, etc.
US8445060B2 (en) 2009-04-22 2013-05-21 Surface Technologies Gmbh & Co. Kg Process and apparatus for manufacturing decorative papers and/or panels for flooring or surfacing of furniture, walls, etc
RU2493971C2 (ru) * 2009-04-22 2013-09-27 Маурицио НАСАТТИ Способ и устройство для изготовления декоративной бумаги и/или панелей для напольного покрытия или облицовки мебели, стен и других объектов
ITPD20090329A1 (it) * 2009-11-04 2011-05-05 Monti Antonio Spa Dispositivo spalmatore di film collanti su supporti con superficie irregolare, come tavole di legno e simili
EP2319629A1 (de) * 2009-11-04 2011-05-11 Monti Antonio S.P.A. Vorrichtung zum Aufbringen einer Klebschicht auf Substrate mit unregelmässiger Oberfläche wie Holzplatten oder dergleichen
EP2942110A3 (de) * 2014-04-14 2016-01-06 tesa SE Beschichtungsverfahren mit seitlichem zulauf
US9708769B2 (en) 2014-04-14 2017-07-18 Tesa Se Side-feed coating method
CN105903632A (zh) * 2016-06-20 2016-08-31 张家港市新港星科技有限公司 一种彩钢板的涂覆装置
CN105903632B (zh) * 2016-06-20 2019-03-08 张家港市新港星科技有限公司 一种彩钢板的涂覆装置
CN107670901A (zh) * 2016-08-01 2018-02-09 普罗科技有限公司 用于电磁干扰屏蔽的浆液分配设备
CN106320071A (zh) * 2016-08-24 2017-01-11 苏州市冠品工贸有限公司 一种自带耐磨印刷纸的生产工艺
CN108380456A (zh) * 2018-04-30 2018-08-10 中航锂电（江苏）有限公司 一种锂离子电池涂布机浆料循环装置
CN113171928A (zh) * 2021-05-12 2021-07-27 杭州彩高科技有限公司 一种胶水循环辊下式涂胶装置及方法

Also Published As

Publication number Publication date
EP1216759B1 (de) 2012-02-01
EP1216759A3 (de) 2004-01-21
IT1319728B1 (it) 2003-11-03
ITMI20002813A1 (it) 2002-06-22
ES2381098T3 (es) 2012-05-23
ATE543578T1 (de) 2012-02-15

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