EP2061939A1 - Device and method for compressing an edge of a building panel and a building panel with compressed edges - Google Patents

Device and method for compressing an edge of a building panel and a building panel with compressed edges

Info

Publication number
EP2061939A1
EP2061939A1 EP07808815A EP07808815A EP2061939A1 EP 2061939 A1 EP2061939 A1 EP 2061939A1 EP 07808815 A EP07808815 A EP 07808815A EP 07808815 A EP07808815 A EP 07808815A EP 2061939 A1 EP2061939 A1 EP 2061939A1
Authority
EP
European Patent Office
Prior art keywords
building panel
edge
anyone
tool
compressed
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.)
Granted
Application number
EP07808815A
Other languages
German (de)
French (fr)
Other versions
EP2061939B1 (en
Inventor
Jan Jacobsson
Peter Wingardh
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.)
Valinge Innovation AB
Original Assignee
Valinge Innovation AB
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
Priority claimed from SE0601922A external-priority patent/SE530422C2/en
Priority claimed from US11/521,439 external-priority patent/US8323016B2/en
Application filed by Valinge Innovation AB filed Critical Valinge Innovation AB
Publication of EP2061939A1 publication Critical patent/EP2061939A1/en
Application granted granted Critical
Publication of EP2061939B1 publication Critical patent/EP2061939B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
    • B27M3/00—Manufacture or reconditioning of specific semi-finished or finished articles
    • B27M3/04—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/02005—Construction of joints, e.g. dividing strips
    • E04F15/02033—Joints with beveled or recessed upper edges
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/01—Joining sheets, plates or panels with edges in abutting relationship
    • E04F2201/0153—Joining sheets, plates or panels with edges in abutting relationship by rotating the sheets, plates or panels around an axis which is parallel to the abutting edges, possibly combined with a sliding movement

Definitions

  • the present invention generally relates to a device and a method of compressing an edge of a building panels, especially floorboards, which have a wood fibre based core and a decorative layer, to provide curved edge portions. More particularly, the present invention relates to interlocked building panels with compressed edge portions located below the panel surface. The invention relates to panels with such edge portions and to a method and device to produce such panels.
  • the invention concerns a device and a method of producing a laminate floor panel with a curve shaped and compressed edge.
  • the invention is as well applicable to building panels in general. More particularly invention relates to the type of floor panels with a wood fibre based core, e.g. HDF, MDF, particleboard, plywood, a decorative layer and a mechanically locking system for horizontal and/or vertical locking produced by the method and device.
  • a device, method and floor panel of this type is presented in WO2006/088417, which discloses a device and method to compress the edges of a laminate floor panel to provide a laminate floor panel with curve shaped edges looking like a solid wood floor panel with bevelled edges.
  • the invention aims at an improved device and a method of producing building panels, especially floorboards, with a curved edge portion made in one piece with the decorative layer, which could be produced with high speed.
  • the invention also makes it possible to produce deeper curved edge portion compared to the known technology.
  • An additional purpose of this invention is to provide building panels comprising a decorative layer and a curved edge portion, produced with the device and the method.
  • a device, method and floor panel of this type is known from WO2006/088417, which discloses a device and method to compress the edges of a laminate floor panel, to provide a laminate floor panel with a curve shaped edge.
  • the known device comprises a heat device and a press tool for heating and compressing the edge part of the panel.
  • the known method comprises the steps of:
  • the first object of the invention is to provide an improved device.
  • the device according to the invention comprises a heat device, a press tool and a lubricating device for lubrication of the press tool, which make it possible to produce building panels with high speed.
  • the tool is arranged rotatable and is configured to rotate when applying the pressure on the edge of the building panel.
  • the lubricating device is arranged to apply the lubricate additive at the press tool.
  • the lubricate additive may be of any type of grease or oil easy to wipe of from the present type of decorative surface.
  • a preferred example is synthetic teflon oil, but it is also possible to use a mineral and an organic oil with the same fluid and lubricating properties, which is possible to remove from the decorative surface.
  • the heating device comprises an IR (infra red) heat element.
  • the tool is heated.
  • the shape of the tool comprises an elliptic groove, with a larger radius in a plane parallel to decorative surface and consequently the smaller in a plane vertical to the decorative surface. This results in a bevel, which looks deeper/bigger.
  • the surface of the tool is grinded. This results in lower friction between the decorative surface and the press tool, resulting in fewer cracks in the decorative surface .
  • the second object of the invention is to provide an improved method to produce a building panel with a compressed edge.
  • the method comprising: • Heating an edge of the building panel.
  • the method also comprises heating of the tool.
  • the method comprises moving the building panel relative the tool via a conveyor.
  • the speed of the conveyor is preferably more than 50m/s and most preferably 100m/s or higher.
  • the third object of the invention is to provide an improved building panel with a curved edge, produced by the device and method afore mentioned.
  • the building panel preferably has an elliptic outer edge.
  • the core at the curve shaped edge is compressed more than 0,5 mm and most preferably more than 0,7 mm.
  • a preferred range of compression is between 0,5 mm to lmm.
  • WO2006/088417 Building panels with a curved edge portion are described in WO2006/088417.
  • Two main types of curved edges are shown in WO2006/088417, the old type, which involves cutting of a part of the core at the edge of the building panel or pressing the whole building panel, forming the curve shape, and a new type involving compression of the edges.
  • the two types may look the same but the new type has a compressed core, with higher density, at the edge.
  • WO2006/088417 also disclose a measuring method for distinguishing the two types.
  • a building board according to the invention is possible to distinguish from the old types with the measuring method described in WO2006/088417 and from the new type that there are fewer or no cracks in the decorative surface at the curved edge. The difference is increased with larger radius and degree of compression.
  • Figs la-c illustrate a device and method according to known technology.
  • Figs 2-3 illustrate an embodiment of a building panel according to the invention.
  • Fig 4 illustrates an embodiment of the device and method according to the invention
  • Fig 5 illustrates an embodiment of the press tool according to the invention, for compressing and forming of an edge portion of a building panel.
  • the invention relates to a device and a method of producing a building panel with a compressed and curved edge and a building panel produced by the device and method.
  • FIG. 1 A prior art device and method of producing a building panel with compressed and curved edges is shown with reference to figs Ia-Ic.
  • FIG 2 and 3 an embodiment of a building panel according to the invention is shown, produced by a device and a method according to the invention and provided with a well-known mechanical locking system.
  • FIGs Ia -c shows in three steps the prior art method of forming the compressed edge.
  • a building element is shown, which in a later step, fig Ib, is cut in to two buildings element (2, 2') and provided with an edge groove (6, 6' ) .
  • the building element comprises a core (3), of a wood fibre based material, preferably HDF, MDF or particle board, a decorative surface (4) of a wood veneer, a laminate comprising paper sheets and a resin or a decorative printing and a balancing layer (5) .
  • a mechanical locking system which will be produced at a later stage, is indicated by a dotted line.
  • heat is applied to the edges by a heat device (8) .
  • a press tool (9) compresses the core at the edge of the building panel and forms the curve shape (10, 10').
  • FIG 2 an embodiment of the invention comprising a joint between two floor panels (1, 1' ) with the compressed and curved edges (10, 10') is shown.
  • An example of a mechanical locking system is shown for vertical and horizontal locking.
  • the horizontal locking comprises a locking strip (23) , extending horizontally from a edge (24b, 24b) of a first floor panel (1) and provided with an upwardly projecting locking element (26) , which cooperates with a locking groove (27) under and at the edge (24a, 25a) of a second floorboard (I' )
  • the vertical locking comprises a tongue (21) at the edge (24b, 25b) of the first panel and a tongue groove (21) at the edge (24a, 25a) of the second floor panel (1') .
  • FIG. 3 shows an embodiment of the floor panel provided with the mechanical locking system and curved edges (10, 10' ) at the long edges and a decorative groove (30) at only one of the opposite short edges (25a, 25b) .
  • the device comprising a conveyor (40) for moving a building panel (2) to a heat device (8).
  • the heat device e.g. infra-red heat element, is arranged for heating an edge of the building element.
  • the conveyor moves the building panel to a press tool for compressing the edge of building panel.
  • a lubricating device (41) arranged for applying a lubricate additive, preferably to the press tool or to the edge of the building panel.
  • a preferred lubricate additive is a synthetic teflon oil, but it is also possible to use a mineral and a organic oil with the same fluid and lubricating properties, which is possible to remove from the decorative surface.
  • the surface of the press tool (9) may be grinded and/or tempered.
  • a material of tempered steel with a hardness of about 30-40 HRC may be used for the press tool, which may be tempered by nitro- carburizing to about 60-70 HRC and advantageously grinded to a roughness of about 0,2 Ra.
  • Other method may be used for tempering for which a hardness may be achieved of about 3000- 4000 Vickers.
  • the press tool (9) may be provided with a groove with a circular (50) or an elliptic shape (51, 52), which creates a corresponding circular or elliptic shape of the curved edge of the building panel.
  • a visual effect is created that the curved edge looks deeper, if the radius of the ellipse in a direction (a) , parallel to the decorative surface is larger than the radius of the ellipse in a direction (b) , vertical to the decorative surface.
  • the edge of the tool closest the middle of the building panel is preferably provided with a clearance angel (53) .
  • the embodiment of the building panel shown in figure 2, produced by the afore mentioned device and method according to the invention preferably comprises a core of a wood based material, e.g. HDF or MDF and a decorative layer of a laminate comprising paper sheets and a resin or a decorative printing, which combination is suitable for compression.
  • a wood based material e.g. HDF or MDF
  • a decorative layer of a laminate comprising paper sheets and a resin or a decorative printing, which combination is suitable for compression.
  • other types of wood based cores e.g particle board or plywood and other decorative surface may be used, e.g. veneer.
  • the building panel is provided with a balancing layer (5) .
  • the core at the curve shaped edge is compressed more than 0,5 mm and most preferably more than 0,7 mm.
  • a preferred range of compression is between 0,5 mm to lmm. Also a smaller degree of compression is obviously possible, and even a larger, but a curved edge or bevel in this range looks the most natural. With the method and the device according to the invention a building panel with such a deep compression is possible to achieve without cracks in the decorative surface.
  • the compressed edge may also comprise a straight part.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Floor Finish (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

A device and method of producing a building panel with a compressed and curved edge comprising a press tool, a heat device and a lubricating device and a building panel with a curved edge produced by the device and method.

Description

DEVICE AND METHOD FOR COMPRESSING AN EDGE OF A BUILDING PANEL AND A BUILDING PANEL WITH COMPRESSED EDGES
Area of Invention
The present invention generally relates to a device and a method of compressing an edge of a building panels, especially floorboards, which have a wood fibre based core and a decorative layer, to provide curved edge portions. More particularly, the present invention relates to interlocked building panels with compressed edge portions located below the panel surface. The invention relates to panels with such edge portions and to a method and device to produce such panels.
Background of the Invention
In particular, yet not restrictive manner, the invention concerns a device and a method of producing a laminate floor panel with a curve shaped and compressed edge. However, the invention is as well applicable to building panels in general. More particularly invention relates to the type of floor panels with a wood fibre based core, e.g. HDF, MDF, particleboard, plywood, a decorative layer and a mechanically locking system for horizontal and/or vertical locking produced by the method and device.
A device, method and floor panel of this type is presented in WO2006/088417, which discloses a device and method to compress the edges of a laminate floor panel to provide a laminate floor panel with curve shaped edges looking like a solid wood floor panel with bevelled edges.
Summary of the Invention The invention aims at an improved device and a method of producing building panels, especially floorboards, with a curved edge portion made in one piece with the decorative layer, which could be produced with high speed. The invention also makes it possible to produce deeper curved edge portion compared to the known technology.
An additional purpose of this invention is to provide building panels comprising a decorative layer and a curved edge portion, produced with the device and the method.
A device, method and floor panel of this type is known from WO2006/088417, which discloses a device and method to compress the edges of a laminate floor panel, to provide a laminate floor panel with a curve shaped edge. The known device comprises a heat device and a press tool for heating and compressing the edge part of the panel.
The known method comprises the steps of:
• Applying the decorative layer on the core to form a building element.
• Cutting the building element into building panels.
• Applying heat and pressure on the surface of an edge portion of the building panel such that the core under the decorative layer is compressed and the surface layer is permanently bended towards the rear side of the core . The drawback of this known device and method is that cracks arise in the decorative layer if the pressure is applied to fast or if the degree of compression is to high.
The first object of the invention is to provide an improved device. The device according to the invention comprises a heat device, a press tool and a lubricating device for lubrication of the press tool, which make it possible to produce building panels with high speed.
Advantageously, the tool is arranged rotatable and is configured to rotate when applying the pressure on the edge of the building panel.
Preferably, the lubricating device is arranged to apply the lubricate additive at the press tool. The lubricate additive may be of any type of grease or oil easy to wipe of from the present type of decorative surface. A preferred example is synthetic teflon oil, but it is also possible to use a mineral and an organic oil with the same fluid and lubricating properties, which is possible to remove from the decorative surface.
Preferably, the heating device comprises an IR (infra red) heat element. In a preferred embodiment also the tool is heated.
Preferably, the shape of the tool comprises an elliptic groove, with a larger radius in a plane parallel to decorative surface and consequently the smaller in a plane vertical to the decorative surface. This results in a bevel, which looks deeper/bigger.
Preferably, the surface of the tool is grinded. This results in lower friction between the decorative surface and the press tool, resulting in fewer cracks in the decorative surface .
The second object of the invention is to provide an improved method to produce a building panel with a compressed edge. The method comprising: • Heating an edge of the building panel.
• Lubricating the edge of the building panel or an press tool
• Compressing the edge of the building panel with the press tool
Advantageously, the method also comprises heating of the tool.
Preferably, the method comprises moving the building panel relative the tool via a conveyor. The speed of the conveyor is preferably more than 50m/s and most preferably 100m/s or higher.
The third object of the invention is to provide an improved building panel with a curved edge, produced by the device and method afore mentioned. The building panel preferably has an elliptic outer edge. Advantageously, the core at the curve shaped edge is compressed more than 0,5 mm and most preferably more than 0,7 mm. A preferred range of compression is between 0,5 mm to lmm. With the method and the device according to the invention' it is possible to produce a building panel with such a deep compression without cracks in the decorative surface.
Building panels with a curved edge portion are described in WO2006/088417. Two main types of curved edges are shown in WO2006/088417, the old type, which involves cutting of a part of the core at the edge of the building panel or pressing the whole building panel, forming the curve shape, and a new type involving compression of the edges. The two types may look the same but the new type has a compressed core, with higher density, at the edge. WO2006/088417 also disclose a measuring method for distinguishing the two types. A building board according to the invention is possible to distinguish from the old types with the measuring method described in WO2006/088417 and from the new type that there are fewer or no cracks in the decorative surface at the curved edge. The difference is increased with larger radius and degree of compression.
All references to "a/an/the [element, device, component, means, step, etc] " are to be interpreted openly as referring to at least one instance of said element, device, component, means, step, etc., unless explicitly stated otherwise.
Brief Description of the Drawings
Figs la-c illustrate a device and method according to known technology.
Figs 2-3 illustrate an embodiment of a building panel according to the invention.
Fig 4 illustrates an embodiment of the device and method according to the invention
Fig 5 illustrates an embodiment of the press tool according to the invention, for compressing and forming of an edge portion of a building panel.
Description of Embodiments of the Invention
As represented in figures 2-5, the invention relates to a device and a method of producing a building panel with a compressed and curved edge and a building panel produced by the device and method.
A prior art device and method of producing a building panel with compressed and curved edges is shown with reference to figs Ia-Ic. In figure 2 and 3 an embodiment of a building panel according to the invention is shown, produced by a device and a method according to the invention and provided with a well-known mechanical locking system.
Figures Ia -c shows in three steps the prior art method of forming the compressed edge. In figure Ia a building element is shown, which in a later step, fig Ib, is cut in to two buildings element (2, 2') and provided with an edge groove (6, 6' ) . The building element comprises a core (3), of a wood fibre based material, preferably HDF, MDF or particle board, a decorative surface (4) of a wood veneer, a laminate comprising paper sheets and a resin or a decorative printing and a balancing layer (5) . A mechanical locking system, which will be produced at a later stage, is indicated by a dotted line. In the second step heat is applied to the edges by a heat device (8) . In the third step, illustrated in fig Ic, a press tool (9) compresses the core at the edge of the building panel and forms the curve shape (10, 10').
In figure 2 an embodiment of the invention comprising a joint between two floor panels (1, 1' ) with the compressed and curved edges (10, 10') is shown. An example of a mechanical locking system is shown for vertical and horizontal locking. The horizontal locking comprises a locking strip (23) , extending horizontally from a edge (24b, 24b) of a first floor panel (1) and provided with an upwardly projecting locking element (26) , which cooperates with a locking groove (27) under and at the edge (24a, 25a) of a second floorboard (I' ) The vertical locking comprises a tongue (21) at the edge (24b, 25b) of the first panel and a tongue groove (21) at the edge (24a, 25a) of the second floor panel (1') . Any type of locking may be used, e.g only vertical, only horizontal, a tongue lock (see WO02/055810) or in addition glue may be added. Figure 3 shows an embodiment of the floor panel provided with the mechanical locking system and curved edges (10, 10' ) at the long edges and a decorative groove (30) at only one of the opposite short edges (25a, 25b) .
An embodiment of the device and method according to the invention is illustrated in figure 4. The device comprising a conveyor (40) for moving a building panel (2) to a heat device (8). The heat device, e.g. infra-red heat element, is arranged for heating an edge of the building element. In a second step the conveyor moves the building panel to a press tool for compressing the edge of building panel. Preferably both opposite edges are heated and subsequently compressed at the same time by a rotating press tool. The device also comprises a lubricating device (41) arranged for applying a lubricate additive, preferably to the press tool or to the edge of the building panel.
A preferred lubricate additive is a synthetic teflon oil, but it is also possible to use a mineral and a organic oil with the same fluid and lubricating properties, which is possible to remove from the decorative surface. To reduce the friction further more, the surface of the press tool (9) may be grinded and/or tempered. As an example a material of tempered steel with a hardness of about 30-40 HRC may be used for the press tool, which may be tempered by nitro- carburizing to about 60-70 HRC and advantageously grinded to a roughness of about 0,2 Ra. Other method may be used for tempering for which a hardness may be achieved of about 3000- 4000 Vickers. Generally, a harder and smother press tool is desired, but leads to greater costs. For some material of the decorative layer and a compression in the lower range, it's possible to take out the lubrication and achieve the desired result by a grinded and tempered press tool. Advantageously, the press tool (9) may be provided with a groove with a circular (50) or an elliptic shape (51, 52), which creates a corresponding circular or elliptic shape of the curved edge of the building panel. With an elliptic shape a visual effect is created that the curved edge looks deeper, if the radius of the ellipse in a direction (a) , parallel to the decorative surface is larger than the radius of the ellipse in a direction (b) , vertical to the decorative surface. The edge of the tool closest the middle of the building panel is preferably provided with a clearance angel (53) .
The embodiment of the building panel shown in figure 2, produced by the afore mentioned device and method according to the invention preferably comprises a core of a wood based material, e.g. HDF or MDF and a decorative layer of a laminate comprising paper sheets and a resin or a decorative printing, which combination is suitable for compression. Also other types of wood based cores, e.g particle board or plywood and other decorative surface may be used, e.g. veneer. Advantageously, the building panel is provided with a balancing layer (5) .
Advantageously, the core at the curve shaped edge is compressed more than 0,5 mm and most preferably more than 0,7 mm. A preferred range of compression is between 0,5 mm to lmm. Also a smaller degree of compression is obviously possible, and even a larger, but a curved edge or bevel in this range looks the most natural. With the method and the device according to the invention a building panel with such a deep compression is possible to achieve without cracks in the decorative surface. The compressed edge may also comprise a straight part.

Claims

1. A device for producing a building panel (1,2) with a compressed and curved edge portion (10), whereby the device comprises a heating device arranged to heat the edge of the building panel and a press tool (9) arranged to compress the core (3) of the building panel at the edge of it c h a r a c t e r i z e d in that the device comprises a lubricating device (41), which supplies a lubricate additive to the compressing zone.
2. A device as claimed in claim 1, wherein the lubricate additive is supplied to the press tool (9) .
3. A device as claimed in claim 1, wherein that the lubricate additive is supplied to the edge of the building panel.
4. A device as claimed in anyone of the preceding claims, wherein the tool (9) is arranged rotatable and is configured to rotate when applying the pressure on the edge of the building panel.
5. A device as claimed in anyone of the preceding claims, wherein the lubricate additive is a teflon oil.
6. A device as claimed in anyone of the preceding claims, wherein the heating device comprises an infrared heat element .
7. A device as claimed in anyone of the preceding claims, wherein the device comprises a tool-heating device.
8. A device as claimed in anyone of the preceding claims, wherein the tool (9) comprises a groove with an elliptic or circular shape (50, 51, 52) , with the larger radius in a plane parallel to the decorative surface and the smaller radius in a plane vertical to the decorative surface.
9. A device as claimed in anyone of the preceding claims, wherein the surface of the press tool is grinded.
10. A device as claimed in anyone of the preceding claims, wherein the surface of the press tool is tempered.
11. A device as claimed in anyone of the preceding claims, wherein the core (3) comprises HDF or MDF.
12. A device as claimed in anyone of the preceding claims, wherein the decorative surface (4) is a wood veneer or a laminate layer comprising a resin.
13. A method of producing a building panel (1,2) with a curved edge portion, wherein the method comprising:
heating an edge of the building panel (1,2),
lubricating the edge of the building panel or an press tool (9) and
compressing the edge of the building panel with the press tool (9) .
14. The method as claimed in claim 13, wherein the method comprising heating of the tool (9) .
15. The method as claimed in claim 13 or 14, wherein the method comprising moving the building panel (1, 2) relative the tool (9) via a conveyor (40), preferably with a velocity of 50m/s or higher.
16. A building panel comprising a core (3) of wood based material, a decorative surface (4) and a curved edge portion (10) produce by the device in anyone of the claims 1-12 and/σr the method in anyone of the claims 13-15 c h a r a c t e r i z e d in that the edge is compressed to a depth of (CD) about 0,5 mm or more.
17. The building panel as claimed in claim 16, wherein the edge is compressed to a depth of (CD) about 0,7 mm or more.
18. The building panel as claimed in claim 16, wherein the edge is compressed to a depth (CD) in the range of about 0,5 mm to 1 mm.
19. The building panel as claimed in anyone of the claims 16-18, wherein the curved edge (10) has an elliptic or circular shape.
20. The building panel as claimed in anyone of the claims 16-19, wherein the decorative surface (4) is a wood veneer or a laminate layer comprising a resin.
21. The building panel as claimed in anyone of the claims 16-20, wherein the core (3) comprises HDF or MDF.
EP07808815A 2006-09-15 2007-09-13 Device and method for compressing an edge of a building panel and a building panel with compressed edges Active EP2061939B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0601922A SE530422C2 (en) 2006-09-15 2006-09-15 Device for manufacturing building panel for use as floor panel, has lubricating device that supplies lubricate additive such as teflon oil, to compressing zone of panel
US11/521,439 US8323016B2 (en) 2006-09-15 2006-09-15 Device and method for compressing an edge of a building panel and a building panel with compressed edges
PCT/SE2007/000805 WO2008033081A1 (en) 2006-09-15 2007-09-13 Device and method for compressing an edge of a building panel and a building panel with compressed edges

Publications (2)

Publication Number Publication Date
EP2061939A1 true EP2061939A1 (en) 2009-05-27
EP2061939B1 EP2061939B1 (en) 2011-02-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP07808815A Active EP2061939B1 (en) 2006-09-15 2007-09-13 Device and method for compressing an edge of a building panel and a building panel with compressed edges

Country Status (13)

Country Link
EP (1) EP2061939B1 (en)
JP (1) JP4975819B2 (en)
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NO339675B1 (en) 2017-01-23
CA2663493C (en) 2015-01-27
JP2010503552A (en) 2010-02-04
RU2009114174A (en) 2010-10-20
CA2663493A1 (en) 2008-03-20
EP2061939B1 (en) 2011-02-23
JP4975819B2 (en) 2012-07-11
KR20090063261A (en) 2009-06-17
NO20091030L (en) 2009-04-06
WO2008033081A1 (en) 2008-03-20
ATE499194T1 (en) 2011-03-15
KR101410317B1 (en) 2014-06-20
RU2443834C2 (en) 2012-02-27
MX2009002928A (en) 2009-03-31
BRPI0714737A2 (en) 2013-05-07
DE602007012723D1 (en) 2011-04-07
EG25114A (en) 2011-09-13
MY150049A (en) 2013-11-29

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