WO2015181058A1 - Procédé de lissage de chants de pièces - Google Patents

Procédé de lissage de chants de pièces Download PDF

Info

Publication number
WO2015181058A1
WO2015181058A1 PCT/EP2015/061326 EP2015061326W WO2015181058A1 WO 2015181058 A1 WO2015181058 A1 WO 2015181058A1 EP 2015061326 W EP2015061326 W EP 2015061326W WO 2015181058 A1 WO2015181058 A1 WO 2015181058A1
Authority
WO
WIPO (PCT)
Prior art keywords
edge
workpieces
filling compound
carrier tape
continuous layer
Prior art date
Application number
PCT/EP2015/061326
Other languages
German (de)
English (en)
Inventor
Andreas Authmann
Norbert MÖNNIGMANN
Original Assignee
Mhf 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 Mhf Gmbh filed Critical Mhf Gmbh
Publication of WO2015181058A1 publication Critical patent/WO2015181058A1/fr

Links

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
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/06—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/15—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer being manufactured and immediately laminated before reaching its stable state, e.g. in which a layer is extruded and laminated while in semi-molten state
    • 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
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
    • B32B2310/0806—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation
    • B32B2310/0831—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation using UV radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2479/00—Furniture
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Definitions

  • the invention relates to a method for smoothing the edges of workpieces having at least one porous layer.
  • Workpieces such as plates or profiles, which have at least one porous layer, in particular wood-based panels such as chipboard and the like, are used for example in the furniture industry, in window construction and door construction for the formation of furniture panels, door frames, door leaves and the like.
  • Particularly common are so-called multi-layer chipboard, which have compacted and therefore particularly smooth surface layers, between which there is a more porous layer of less highly compacted chips.
  • Plates and profiles made of such materials are often refined by sheathing certain surface zones of the panels and their edges with a decorative material made of paper or film material. There is a risk that at the edges of the surface irregularities of the porous layer through the decorative material sign off and thus give an uneven and unsightly surface.
  • the object of the invention is to provide a more efficient method for smoothing the edges of porous workpieces.
  • an endless carrier belt with a speed that is synchronous with the transport speed of the workpieces can be run over deflection rollers in such a way that a pressure section of the carrier belt bears over a specific length on a section of the edge of at least one workpiece to be smoothed
  • the filling material on the pressing portion transmits to the edge so that it forms a continuous layer of predetermined thickness there,
  • the filler has enough time to penetrate deep into the pores of the workpiece, so that at the time at which the carrier tape on the downstream pulley back from the workpiece is replaced, already such a strong toothing and adhesion between filler and workpiece has arisen that the filler material not only fills the pores, but remains in the form of a continuous layer on the surface of the edge. After complete curing, the continuous layer thus forms a smooth surface.
  • the method can be carried out efficiently in one operation on the continuously transported workpieces, and the device used for smoothing according to this method can be easily integrated into a conventional coating plant.
  • the smoothed edges can then be directly exposed in the sheathing plant.
  • the filling compound especially if it is suitably colored, directly forms the visible Oberfiambaen für the workpiece edges.
  • the method further has the advantage that the filling material at the same time causes a sealing of the porous edge and thus prevents the penetration of moisture.
  • the filling compound may be, for example, a hot-melt adhesive such as ethylene vinyl acetate (EVA) or the like or else a UV-curing sealing compound.
  • a UV emitter may be disposed on the conveyor downstream of the carrier belt.
  • the carrier tape should be made of a material that dissolves as well as possible from the filler material, even if this is not completely cured. Suitable, for example, a silicone tape, which also has the necessary heat resistance, if a hot melt adhesive is used as the filling material.
  • FIG. 1 is a Grundrissskizze a plant for carrying out the method according to the invention
  • Figure 2 is a section along the line II - II in Fig. 1.
  • Fig. 3 is a section along the line III - III in Fig. 1;
  • Fig. 4 is a view analogous to Fig. 3 for another embodiment of the method.
  • a conveyor 10 is shown, in this example, a roller conveyor, on the plate-shaped workpieces 12, for example, multi-layer chipboard, are transported in close succession in the direction of arrow A.
  • the edges of the workpieces 12 running in the direction of transport at least one, in the drawing the lower edge 14, should be smoothed by the method according to the invention.
  • an application system 16 is arranged on the corresponding side of the conveyor 10, which has a guided over four pulleys 18 endless carrier tape 20, for example, a silicone tape, and a directed onto the carrier tape application nozzle 22.
  • At least one of the deflection rollers 18 is driven by a motor, not shown, so that the carrier belt 20 rotates at a speed which is synchronous with the transport speed of the conveyor 10. This means that the carrier tape 20 moves in the pressing portion 24 at least approximately at the same speed as the workpieces 12. However, if necessary, a certain slip, so a slight difference in speed between the workpieces and the carrier tape are allowed.
  • the application nozzle 22 is arranged on the carrier tape 20 upstream of the pressure section 24 and serves to apply a filling material 26, for example an EVA hot melt adhesive, in the viscous state on the surface of the carrier tape 20, preferably on the full width of this carrier tape or at least in a width zone that corresponds to the width of the edge 14 of the workpieces.
  • a filling material 26 for example an EVA hot melt adhesive
  • the filling compound 26 is then brought into contact with the edge of the workpieces 12 so that they penetrate into pores 28 of the material, as shown schematically in Fig. 2.
  • the thickness of the layer of filling material 26 applied to the carrier tape 20 is selected such that this filling material not only fills the pores 28 open at the surface of the workpiece, but furthermore forms a continuous layer 30 of predetermined thickness over the entire surface of the edge 14.
  • the thickness of the layer 30 is more than 0.15 mm, preferably more than 0.3 mm.
  • the carrier tape 20 is supported in the pressing portion 24 by a forming block 32 so that it is held with a certain pressing force with the edge of the workpiece in abutment.
  • the length of the pressing portion 24 is preferably at least 10 cm, more preferably at least 25 cm and is adapted to the transport speed of the workpieces so that the hot filling material 26 has sufficient time to penetrate into the pores 28 of the material.
  • the mold block 32 may be heated at least in its upstream region.
  • a heating block 34 is provided with which the carrier tape 20 is maintained at a suitable temperature before reaching the application nozzle 22.
  • the carrier tape 20 is deflected relatively sharp at the local deflection roller 18, while the continuous layer of the filling material 26 remains on the edge of the workpiece.
  • the filler material cools to harden and form a smooth, solid surface layer, as shown in FIG.
  • the workpieces 12 are supported by support rollers 36 at the longitudinal edge opposite the edge 14 to be smoothed. If both edges of the workpieces are to be smoothed, a further application system can be provided here instead of the support rollers 36, which is formed in mirror image to the application system 16 shown.
  • the applicator system 16 may be arranged downstream of a doctor device with which the surface of the continuous layer 30 can be doctored off before it is completely cured.
  • the application systems 16 clock-controlled on the workpieces 12 can be adjusted and offset from these. This makes it possible to smooth the edges 14 intermittently, in each case only on a part of the length of the workpiece.
  • the edge 14 of the workpieces 12 is flat.
  • this edge can also have a certain relief or profile, as in Fig. 4 is shown.
  • the mold block 32 has a complementary shape to the relief of the edge 14, so that the carrier tape 20 is deformed accordingly and snugly conforms to the surface of the edge 14.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

L'invention concerne un procédé pour lisser les chants (14) de pièces (12) qui présentent au moins une couche poreuse, ce procédé consistant à : transporter les pièces (12) sur un convoyeur (10) dans une direction parallèle au chant (14) à lisser, faire tourner une bande transporteuse (20) sans fin à une vitesse synchrone avec la vitesse de transport des pièces (12) par l'intermédiaire de poulies de renvoi (18) de telle manière qu'une partie de pression (24) de la bande transporteuse (20) soit plaquée sur une longueur déterminée contre une partie du chant à lisser d'au moins une pièce, appliquer une pâte de remplissage (26) durcissable sur la bande transporteuse (20) en amont de la partie de pression (24), transférer la pâte de remplissage (26) se trouvant sur la partie de pression (24) de telle manière sur le chant (14) qu'elle forme sur ce dernier une couche continue (30) d'une épaisseur prédéterminée, et laisser durcir la pâte de remplissage (26) après la séparation de la bande transporteuse (20) jusqu'à ce que la couche continue (30) forme une surface solide et lisse.
PCT/EP2015/061326 2014-05-27 2015-05-21 Procédé de lissage de chants de pièces WO2015181058A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014107492.0A DE102014107492A1 (de) 2014-05-27 2014-05-27 Verfahren zum Glätten von Werkstückkanten
DE102014107492.0 2014-05-27

Publications (1)

Publication Number Publication Date
WO2015181058A1 true WO2015181058A1 (fr) 2015-12-03

Family

ID=53488289

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2015/061326 WO2015181058A1 (fr) 2014-05-27 2015-05-21 Procédé de lissage de chants de pièces

Country Status (2)

Country Link
DE (1) DE102014107492A1 (fr)
WO (1) WO2015181058A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200005738A1 (it) 2022-03-23 2023-09-23 Cefla Soc Cooperativa Metodo per la verniciatura di pannelli tramite teste vacuum

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745057A (en) * 1951-12-24 1956-02-22 Hans Wilhelmi Improvements in or relating to processes for the surface treatment of materials
DE2438646A1 (de) * 1974-08-12 1976-03-04 Basf Farben & Fasern Verfahren zum beschichten von holz und holzwerkstoffen
US4698110A (en) * 1985-11-27 1987-10-06 E. I. Du Pont De Nemours And Company Preparation of fluoropolymer coated material
US5472541A (en) * 1993-04-26 1995-12-05 Astechnologies, Inc. Method of applying adhesive to porous materials
WO1996016777A1 (fr) * 1994-11-29 1996-06-06 Henkel Kommanditgesellschaft Auf Aktien Dispositif et procede de traitement de surfaces
EP2360016A1 (fr) * 2009-11-05 2011-08-24 Metsäliitto Osuuskunta Revêtement de produits rigides à base de bois aviec un polymère thermoplastique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10049985C2 (de) * 2000-10-06 2002-11-21 Mhf Gmbh Ummantelungsvorrichtung
DE20211068U1 (de) * 2002-07-22 2002-10-17 Fritz Egger Gmbh & Co, Unterradlberg Spanplatte mit einer verdichteten Seitenkante
ES2459296T5 (es) * 2009-04-22 2022-06-29 Homag Holzbearbeitungssysteme Ag Dispositivo y procedimiento para el recubrimiento de piezas de trabajo

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB745057A (en) * 1951-12-24 1956-02-22 Hans Wilhelmi Improvements in or relating to processes for the surface treatment of materials
DE2438646A1 (de) * 1974-08-12 1976-03-04 Basf Farben & Fasern Verfahren zum beschichten von holz und holzwerkstoffen
US4698110A (en) * 1985-11-27 1987-10-06 E. I. Du Pont De Nemours And Company Preparation of fluoropolymer coated material
US5472541A (en) * 1993-04-26 1995-12-05 Astechnologies, Inc. Method of applying adhesive to porous materials
WO1996016777A1 (fr) * 1994-11-29 1996-06-06 Henkel Kommanditgesellschaft Auf Aktien Dispositif et procede de traitement de surfaces
EP2360016A1 (fr) * 2009-11-05 2011-08-24 Metsäliitto Osuuskunta Revêtement de produits rigides à base de bois aviec un polymère thermoplastique

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Publication number Publication date
DE102014107492A1 (de) 2015-12-03

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