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EP1915492B1 - Panneau de construction a bords comprimes - Google Patents

Panneau de construction a bords comprimes Download PDF

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Publication number
EP1915492B1
EP1915492B1 EP06716899.7A EP06716899A EP1915492B1 EP 1915492 B1 EP1915492 B1 EP 1915492B1 EP 06716899 A EP06716899 A EP 06716899A EP 1915492 B1 EP1915492 B1 EP 1915492B1
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EP
European Patent Office
Prior art keywords
edge
surface layer
core
edge portion
floor
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.)
Active
Application number
EP06716899.7A
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German (de)
English (en)
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EP1915492A2 (fr
EP1915492A4 (fr
Inventor
Darko Pervan
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
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Publication date
Application filed by Valinge Innovation AB filed Critical Valinge Innovation AB
Priority to PL06716899T priority Critical patent/PL1915492T3/pl
Priority to EP06716899.7A priority patent/EP1915492B1/fr
Publication of EP1915492A2 publication Critical patent/EP1915492A2/fr
Publication of EP1915492A4 publication Critical patent/EP1915492A4/fr
Application granted granted Critical
Publication of EP1915492B1 publication Critical patent/EP1915492B1/fr
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Classifications

    • 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
    • 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
    • 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 method of producing building panels, especially floorboards, which have a wood fibre based core, a surface layer and compressed curved edge portions. More particularly, the present invention relates to a method of producing interlocked building panels with compressed edge portions located below the panel surface. The invention relates to a method to produce such panels.
  • the present invention is particularly suitable for use in floating floors, which are formed of floorboards comprising a wood fibre based core with a surface layer and which are preferably joined mechanically with a locking system integrated with the floorboard.
  • a floorboard with a mechanical locking system has a rather advanced edge profile and curved edge portion are more difficult produce than traditional furniture components.
  • the invention can be used in optional floorboards with optional locking systems, where the floorboards have a core and at least one surface layer and where these two parts are possible to be formed with a pressure force applied to the surface layer.
  • the invention can thus also be applicable to, for instance, floors with one or more surface layers of wood applied on a wood fibre core.
  • the present invention could also be used in building panels i.e. wall panels, ceilings and floor strips such as dilatation profiles, transition profiles or finishing profiles.
  • front side the visible surface of the installed floorboard
  • rear side the opposite side
  • horizontal plane relates to a plane, which extends along the outer flat parts of the surface layer at the front side.
  • Vertical plane relates to a plane, which is perpendicular to the horizontal plane and at an outer edge of the surface layer. By “up” is meant towards front side, by “down” towards rear side, by “vertical” parallel with the vertical plane and by “horizontal” parallel with the horizontal plane.
  • edge portion is meant a part of the edge, which is below the horizontal plane.
  • floor surface is meant the outer flat parts of the surface layer along the horizontal plane.
  • edge surface is meant the surface of the edge portion.
  • locking system is meant cooperating connecting means, which interconnect the floorboards vertically and/or horizontally.
  • mechanical locking system is meant that joining can take place without glue.
  • Laminate floors and other similar floorboards are made up of one or more upper layers of decorative laminate, decorative plastic material or wood veneer, an intermediate core of wood fibre based material or plastic material and preferably a lower balancing layer on the rear side of the core.
  • Laminate flooring usually consists of a core of a 6-9 mm fibreboard, a 0.2-0.8 mm thick upper decorative surface layer of laminate and a 0.1-0.6 mm thick lower balancing layer of laminate, plastic, paper or like material.
  • Thicker laminate flooring with a thickness of 12-16 mm or more could be produced. Such floors will have favourable sound properties.
  • Extremely thin floorings with thicknesses of 3-6 mm could also be produced. Such thin floorings could be used in installations with floor heating and the thin floor panel will transfer heat to the surface more efficiently than traditional floor panels.
  • the surface layer provides appearance and durability to the floorboards.
  • the core provides stability, and the balancing layer keeps the board plane when the relative humidity (RH) varies during the year.
  • the floorboards are laid floating, i.e. without gluing, on an existing subfloor. Traditional hard floorboards in floating flooring of this type are usually joined by means of glued tongue-and-groove joints.
  • floorboards In addition to such traditional floors, floorboards have been developed which do not require the use of glue and instead are joined mechanically by means of so-called mechanical locking systems. These systems comprise locking means, which lock the boards horizontally and vertically.
  • the mechanical locking systems can be formed by machining of the core. Alternatively, parts of the locking system can be formed of a separate material, which is integrated with the floorboard, i.e. joined with the floorboard in connection with the manufacture thereof.
  • the most common core material is fibreboard with high density and good stability, usually called HDF - High Density Fibreboard. Sometimes also MDF - Medium Density Fibreboard - is used as core. MDF and HDF contain ground wood fibres, which by means of binding agents are combined into a sheet material.
  • Laminate flooring and also many other floorings with a surface layer of plastic, wood, veneer, cork and the like are produced in several steps.
  • the surface layer and the balancing layer is produced in a separate step and are then applied to a core material by for example gluing a previously manufactured decorative layer and balancing layer to a fibreboard.
  • a production process is used when a floor panel has a surface of a decorative high pressure laminate (HPL) which is made in a separate operation where a plurality of sheets of paper impregnated with a thermosetting resin, such as melamine and/or phenol are compressed under high pressure and at a high temperature.
  • HPL decorative high pressure laminate
  • DPL direct pressure laminate
  • Figures 1a - 1d shows how laminate flooring is produced according to known technology.
  • the above methods result in a floor element (3 in fig 1b ) in the form of a large laminated board, which is then sawn into several individual floor panels (2 in fig 1c ), which are then machined to floorboards (1 in fig 1d ).
  • the floor panels are individually machined along their edges to floorboards with mechanical locking systems on the edges.
  • the machining of the edges is carried out in advanced milling machines where the floor panel is exactly positioned between one or more chains and belts or similar, so that the floor panel can be moved at high speed and with great accuracy past a number of milling motors, which are provided with diamond cutting tools or metal cutting tools, which machine the edge of the floor panel.
  • milling motors By using several milling motors operating at different angles, advanced profiles can be formed at speeds exceeding 100 m/min and with an accuracy of ⁇ 0.02 mm.
  • the upper edges of the floorboards are in most cases very sharp and perpendicular to the floor surface and in the same plane as the floor surface.
  • This manufacturing method suffers from a number of problems, which are above all related to difficulties in positioning the decorative paper and metal sheets in connection with laminating and the difficulty in positioning floor element and floor panels in the subsequent sawing and machining of the edges.
  • the result is a floor panel with edge portions, which show considerable and undesired variations in structure and design as shown in figure 2b .
  • Another problem is that this method is only suitable for embossed textures which are less than about 0,2 mm deep and which cannot be made deeper than the thickness of the surface layer.
  • Further disadvantages are that although the edge is below the floor surface, it is sharp and parallel with the surface.
  • the inventor has analyzed and evaluated the possibilities to use this traditional technology and to produce compressed edge portions in DPL floor panels with a shape of for example a bevel or a convex curved edge.
  • a decorative paper with only a wood design could be used and this will give the advantage that the problem of positioning the press plate and a printed decorative edge portion could be avoided.
  • This method has however several disadvantages. It is very difficult to form an edge with an edge depth ED of more than about 0,2 mm, which is in the same magnitude as the surface thickness ST.
  • the maximum angle AN, which could be accomplished is less than 10 degrees.
  • the production would be inefficient since the press cycle time and the pressing pressure must be increased. Higher angles and deeper embossing will considerably increase the risks that the paper breaks during production. It would also be very difficult to position the laminated floor element with the depressions in the subsequent sawing and milling operation.
  • edge widths EW1, EW2 there would be considerable undesirable tolerances in the edge widths EW1, EW2 in the magnitude of 0,3 - 0,5mm.
  • the adjacent edge and depressions 20,20' intended to be in contact with each other would not meet at the same height position.
  • the laminate surface layer will be compressed, especially the transparent overlay wear layer 33, which is located over the printed decorative paper 34. All these problems will increase if the traditional width of the floorboard of 200 mm is decreased to for example 150 mm or 120mm or below 100 mm, since the number of depression will increase. In most application this would require that the pressing pressure must be increased from 300N/cm2 to 600N/cm2 or even 800 N/cm2.
  • Considerable investments in new and more expensive pressing equipment and embossed metal sheets would be required, especially if floorboards of different widths or lengths are to be produced.
  • Figure 2c and 2d show another method.
  • Decorative edge portions could be made in connection with the machining of the edges of the floor panel 1, 1'. Laminating and sawing of the floor element (3) can then take place without any specific requirements as to alignment, and swelling problems do not occur.
  • the decorative and embedded edge portion can be provided by part of the decorative surface layer being removed so that the reinforcing layer of the laminate becomes visible ( figure 2d ).
  • the core (30) itself can be used to create the decorative embedded edge portion. This is shown in figure 3a .
  • the surface layer has been removed and the core (30) is uncovered within areas that are to constitute the decorative edge portion (20).
  • a decorative grove could be made on only one edge as shown in figure 3a .
  • the main disadvantage is that it is impossible to create a design and structure, which is the same as the surface layer. Therefore it is not possible to form an edge portion that looks like a bevel in a solid wood surface layer.
  • FIG. 3b The most common method is shown in figure 3b .
  • a part of the edge portion of a floorboard (1, 1') has been formed as a bevel 20 and this bevel is then in a separate operation covered with a separate material such as a tape, a plastic strip or it could be coloured, printed etc.
  • a separate material such as a tape, a plastic strip or it could be coloured, printed etc.
  • Separate materials are complicated and costly to apply and it is not possible to make an edge portion with the same design and structure as the floor surface.
  • Such edge portion has considerable lower abrasion resistance and inferior moisture properties than the floor surface.
  • the production method is rather slow and several application unites are needed to meet the speed of a modern production line for laminate floorings.
  • FIG. 3c Another method is shown in figure 3c .
  • the edge portion (20) is formed in a separate material, which has been inserted or extruded into a groove. This method has the same disadvantages as the method described above.
  • Fig 3d show that a rounded edge portion (20) could be produced with the well-known post forming method used for furniture components.
  • a post forming laminate surface (31) of HPL which is so flexible that it can be formed after the production of the laminated sheet, could be glued to an already machined floorboard (1).
  • the edge could be heated and the laminate could be bent and glued around the edge portion.
  • This method would be very complicated and costly, since individual floor panels have to be laminated, and is not used in laminate floorings.
  • JP 2002 339556 A , JP 2001 254503 A , US 4 084 996 A and FR 2 846 023 A show known methods of manufacturing panels with curved edge portions.
  • the principles of the present invention are directed to edge portions in building panels, which overcome one or more of the limitations and disadvantages of the prior art.
  • the main objective of this invention is to provide a manufacturing method of building panels, especially floorboards, with curved edge portions made in one piece with the surface layer, which could be produced more efficiently than present products on the market.
  • An additional purpose of this invention is to provide a manufacturing method of such panels with edge portions, which have improved design and abrasion properties.
  • a floorboard is provided, with locking system, a wood fibre based core and a surface layer arranged on the upper side of the core.
  • the outer flat parts of the surface layer constituting a floor surface and a horizontal plane.
  • a plane, perpendicular to the horizontal plane and at the edge of the surface layer, constitutes a vertical plane.
  • the floorboard has an edge portion with an edge surface, which is located under the horizontal plane.
  • the edge surface at the vertical plane is at a distance from the horizontal plane which constitutes an edge depth and which exceeds the thickness of the surface layer.
  • the floor surface and the edge surface are made in one piece of the same material.
  • a part of the core in the edge portion under the edge surface adjacent to the vertical plane and at a vertical distance from the edge surface has a higher density than a part of the core under the floor surface adjacent to the edge portion and at the same vertical distance from the floor surface.
  • the curved edge portion could be formed on only one edge, on two opposite edges or on two pairs of opposite edges.
  • Alternative the edge portion could be formed in panels comprising more than 4 edges.
  • the panels have curved edges on two opposite edges, preferably the long edges, if the floorboards are rectangular.
  • the short edges could have traditional straight edges.
  • the short edges could also have at least one edge portion which is located below the surface and which is formed by any other method for example as shown and described in connection to the figures 2a - 2e , 3a - 3d , 6a -6b or 8 .
  • a rectangular floorboard comprising pairs of opposite long and short edges, a mechanical locking system on at least one pair of edges, a wood fibre based core and a laminate surface layer arranged on the upper side of the core.
  • the outer flat parts of the surface layer constituting a floor surface and a horizontal plane.
  • the floorboard has on the long edges and on at least on one of the short edges edge portions with edge surfaces, which are located under the horizontal plane.
  • An edge surface on the long edge comprises a different material than an edge surface on the short edge.
  • the floorboard has one pair of long edges with an edge portion according to the first principle.
  • the floorboard On one short edge the floorboard has an edge portion where the laminate surface layer has been removed and the wood fibre based core, preferable HDF, is painted or impregnated with for example an oil based chemical.
  • a method is provided to make a floorboard, with a locking system, a wood fibre based core and a surface layer arranged on the upper side of the core according to claim 1.
  • the outer flat parts of the surface layer constituting a floor surface and a horizontal plane.
  • the floorboard has an edge portion with an edge surface, which is located under the horizontal plane. The method comprises the steps of:
  • a method is provided to make a building panel, with a wood fibre based core and a surface layer arranged on the upper side of the core.
  • the outer flat parts of the surface layer constituting a panel surface and a horizontal plane.
  • the panel has an edge portion with an edge surface, which is located under the horizontal plane. The method comprises the steps of:
  • Figs 4a-4c show in four steps manufacture of floorboards.
  • Fig. 4a shows two opposite edges of two essentially similar floor panels 2, 2'that are intended to be joined together with a mechanical locking system.
  • the floorboards have a surface layer 31 of for example HPL, DPL or wood veneer, a core 30 of HDF and balancing layer 32.
  • an edge groove 16, 16' is formed at the upper side of the edge and a part of the surface layer 31 is removed. This could be done in a separate operation or in connection with the sawing of the floor element 3 into floor panels 2.
  • the surface layer 31 is laminate, at least a part of the edge groove 16,16' and the surface layer 31 adjacent to the edge groove 16,16' should preferably be heated with a suitable heating device H, such as for example heating nozzles which blow an even current of hot air, with infra red radiation, micro waves, high frequency, contact heating, laser or similar known technology.
  • a suitable heating device H such as for example heating nozzles which blow an even current of hot air, with infra red radiation, micro waves, high frequency, contact heating, laser or similar known technology.
  • the temperature should exceed 100 degree C.
  • a preferable temperature is about 150 - 200 degree C. In many applications a temperature of about 170 degree C gives the best result.
  • Normal laminate quality could be used as a surface layer 31 and no special post forming quality is needed.
  • a modification of the thermosetting resins similar to the modification, which are used in post forming laminates, could however increase the production efficiency.
  • the floor panel should preferably have a reference surface 17, 17'that could be used to position the floor panel correctly when edge portions and locking systems are formed.
  • the edge portions 20, 20' are then compressed with a compression tool TO which preferably is heated to similar temperatures as described above.
  • the compression tool TO could be a wheel and/or a pressure shoe or similar with a profile which preferably corresponds to the desired edge profile.
  • Several tools could be used to form the edge portion in several steps on for example one long edge, both long edges or on long and thereafter on short edges. Of course short edges could be formed before long edges and several floorboards could be formed in the same equipment.
  • Wheels could have different structures and this will make it possible to form an embossed edge portion.
  • Such an edge portion could also have a random or synchronized structure.
  • the pressing of the edges could be a continuous operation were in the floorboard for example is displaced in relation to a fixed tool.
  • the board could be in a fixed position and a tool could be displaced in relation to the board.
  • Other alternatives are also possible.
  • the edge could also be formed with a traditionally pressing operation. Such a method is especially easeful for the short edges and corner sections could be formed with great accuracy.
  • the fibres in the core will be permanently compressed, the fibre orientations will in most cases change and the density in the edge portion 20 will increase. If the surface layer is laminate, generally in most applications no major compression of the surface layer will occur.
  • a change in the fibre orientation might be difficult to detect in some core materials. Increased density could however be measured with grate accuracy.
  • the edge portion 20 will be much stronger than traditional bevelled edges in laminate flooring.
  • the abrasion resistance will be similar as in the floor surface and the visible edge portion will have the same design and structure as the floor surface.
  • the advantage is that ordinary qualities of thermosetting decorative laminates, which are rather brittle, could be used.
  • HDF is particularly suitable for this kind of press forming with permanent compression according to the invention since the fibre structure and the binders, which are used in HDF, are ideal for this application.
  • a mechanical locking system with a tongue 10 and grove 9 for vertical locking and a strip 6 with a locking element 8 and a locking grove 12 for horizontal locking could easily be formed and positioned with high precision in relation to the compressed edge portions 20,20'.
  • the press forming of the edge portions 20, 20' is made on the floor panel 2, which thereafter is machined to a floorboard 1.
  • the advantage is that the forming of the mechanical locking system can be made with great accuracy and the press forming will not change the dimensions of the profile, which in this embodiment is mainly the tongue 10 and the groove 9.
  • Figure 5a shows a cross section of a panel edge according to the invention.
  • the floor panel 1 has a surface layer 31 of DPL with a surface thickness ST and an outer edge 51.
  • the upper flat part of the surface layer 31 constitutes a horizontal plane HP and a floor surface 33.
  • a plane perpendicular to the horizontal plane and at the outer edge 51 of the surface layer 31 constitutes a vertical plane VP.
  • the convex curved edge portion 20, which is located under the horizontal plane HP and which extends to the vertical plane VP has an edge width EW, measured parallel with the horizontal plane HP and an edge surface 50.
  • An edge portion 20 is considered to be convex curved if at least some parts are convex and the remaining parts are straight as shown in figure 5a .
  • the edge portion 20 has an edge depth ED measured vertically from the horizontal plane HP, which is equal to the distance SD from the horizontal plane HP to the outer edge 51 at the vertical plane VP.
  • the tangent line TL1, TL2 of the curved edge portion 20 has a larger angle AN2 to the horizontal plane at the vertical plane VP than at a distance from the vertical plane, for example at a distance which is 0,5*EW.
  • the invention makes it possible to form edge portions with tangent lines TL having angles exceeding 10 degrees. It is even possible to produce edge portions with angles AN exceeding for example 15, 20,30 or even 45 degrees.
  • edges could for example be formed with a more curved edge portions than the short edges.
  • edge depth ED is larger than the surface layer thickness ST and that the tangent line TL of a part of the edge portion 20 has an angle exceeding 10 degrees.
  • Figure 5b shows the densities D profile in a part (A-A) of a floorboard 1, which has not been compressed and figure 5c shows the density profile D in a compressed edge portion (B-B) of the same floorboard.
  • Density profiles could be measured extremely accurately with a gamma beam. The distance between measuring points could be as small as 0,04 mm.
  • the surface layer 31 of laminate which is about 0,2 mm thick, has a density of about 1300 kg/m3.
  • Below the surface layer 31 there is a core portion 52 which in connection with the direct pressure lamination has been impregnated with melamine and where the density varies between about 1200 - 1000 kg/m3.
  • Under this core portion 52 there is another portion 53 where the density is slightly higher than in the middle parts of the core 30.
  • the average density is shown by the line AD. It should be emphasized that compression in wood fibre based board material always gives an increased density.
  • FIG. 4d An alternative method is shown in figure 4d .
  • Two test samples S1 and S2 with the same thickness ST are taken from the edge and the weight is measured. If the weight per mm is essentially the same, it is a strong indication that no materials has been removed and that the edges have been compressed.
  • the sample thickness could be for example 2,44 mm and the sample length 20 mm along the joint.
  • S1 could have a sample width SW of 3,46 mm and S2 of 3,04 mm.
  • the weight of S1 is 0,167 gram and of S2 0,143 gram.
  • S1 contains slightly more surface layer with higher density than HDF, due to the curved shape. Similar tests in a panel where the surface layer has been laminated on a machined curved edge show that S1 has a weight of 0,062 gr/mm and S2 0,071 g/mm. This is a strong indication that core material has been removed before pressing and not compressed according to the principles of the invention
  • Figure 5c shows the density profile in a compressed part B-B of the edge portion 20.
  • a part of the core 30 in the edge portion adjacent to the vertical plane VP and at a vertical distance SD from the surface layer 31, has a higher density D than a part of the core which is under the floor surface adjacent to the edge portion 20 and at the same vertical distance SD from the surface layer 31. This is as explained above contrary to traditional post forming where the edge portion is machined and the surface layer is glued to the part of the core, which have the same or lower density.
  • Figure 6a shows an alternative method to form an edge portion 20 in a DPL flooring.
  • a floorboard 1 is produced with an edge groove 19 under the surface layer 31.
  • the upper part of the edge grove 19 consist of the surface layer 31 and a part of the core 30.
  • This upper part of the edge grove 19 is folded against the lover part of the edge grove 19 and both parts are pressed and glued together.
  • Figure 6b shows that this method could be used to form an edge portion of a floor panel, which is then machined to a floorboard. Both these methods are more complicated than the press forming since glue and separate machining is required. This method could be partly combined with the press forming and the core could be compressed in connection with the gluing.
  • Figure 7 shows a dilatation profile 4 with press formed edge portions 20, 20'.
  • Figure 8 shows a floorboard with edge portions 20 at opposite edges which are curved and where the outer adjacent parts of the edge surfaces 50 are essential parallel with the horizontal plane HP.
  • Figure 9 shows a floorboard where the edge surface of the edge portions 20 on the long edges 4a, 4b comprise different material than the edge surface of the edge portion 20' of one of the short edges 5a.
  • the long edges could preferably be formed according to the method shown in figure 5a .
  • one of the short edges 5a has an edge portion 20' in the form of a decorative grove essentially parallel with the horizontal plane HP as shown in figure 3a .
  • the edge surface on the long edges is a laminate made of a melamine-impregnated paper and on one short edge the edge surface is HDF fibres, which could be painted.
  • laminate/tape laminate/printing
  • tape/printing tape/printing
  • laminate/impregnation laminate/tape etc are possible to use in order to improve appearance and production cost.
  • long and short edges could be formed.
  • the invention is especially suitable to produce laminate floorings that look like solid wood floor strips with a width of about 5-10 cm and where compressed edge portions are only formed on the long sides.
  • Such floorboards could also easily be made in random lengths since long press formed floor panels could be produced which are thereafter machined and cut to floorboards in different lengths.
  • a machined edge portion on one short edge could also be formed.
  • the visible wood fibres could be painted.
  • the invention is also very suitable for laminated panels with a width of 10-12 cm or 12-15 cm where traditional methods are difficult to use.
  • a floor which consist of such narrow floorboards will have many curved edge portions 20 and only very cost efficient production methods such as press forming could be used in order to obtain production costs which are competitive and lower than similar solid wood floors.
  • the method to compress the core with a surface layer of a laminate floor element, floor panel or floorboard or a similar building element panel according to the invention could be used to form embossed portions on other parts than the edges.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Floor Finish (AREA)
  • Panels For Use In Building Construction (AREA)
  • Paper (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Finishing Walls (AREA)
  • Golf Clubs (AREA)

Claims (9)

  1. Procédé pour fabriquer une lame de parquet, avec un système de verrouillage, une âme à base de fibre de bois (30) et une couche de surface (31) agencée sur le côté supérieur de l'âme, les parties plates externes de la couche de surface (31) constituant une surface de plancher (33) et un plan horizontal (HP), la lame de parquet a une partie de bord (20) avec une surface de bord (50) qui est positionnée sous le plan horizontal, caractérisé en ce que le procédé comprend les étapes suivantes :
    appliquer une couche de surface (31) sur l'âme pour former un élément de plancher (3),
    couper l'élément de plancher en panneaux de plancher (2),
    appliquer une pression sur la surface d'une partie de bord (20) du panneau de plancher et comprimer l'âme sous la couche de surface et plier la couche de surface de manière permanente vers le côté arrière, la pression étant réalisée tout en chauffant la partie de bord (20) avec un dispositif chauffant comprenant le rayonnement infrarouge.
  2. Procédé selon la revendication 1, caractérisé en ce que la couche de surface (31) comprend des feuilles de papier imprégnées avec une résine thermodurcissable.
  3. Procédé selon la revendication 1, caractérisé en ce que la couche de surface (31) est une feuille mince de bois.
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'âme (30) est du HDF.
  5. Procédé selon la revendication 1, caractérisé en ce que le procédé comprend la pression de la partie de bord (20) sous une chaleur dépassant 100 degrés C.
  6. Procédé selon la revendication 1, caractérisé en ce que le procédé comprend la pression de la partie de bord (20) sous une chaleur dépassant 160 degrés C.
  7. Procédé selon la revendication 1, caractérisé en ce que le procédé comprend la formation d'un système de verrouillage mécanique (9, 10, 6, 8) au niveau du bord du panneau de plancher (2) après l'application de la pression.
  8. Procédé selon la revendication 1, caractérisé en ce que le procédé comprend la formation d'une rainure de bord (19) au niveau du bord du panneau de plancher (2) avant d'appliquer la pression.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce que le procédé comprend l'application de la pression en déplaçant une semelle de pression ou une roue de pression par rapport au panneau de plancher (2).
EP06716899.7A 2005-02-15 2006-02-15 Panneau de construction a bords comprimes Active EP1915492B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL06716899T PL1915492T3 (pl) 2005-02-15 2006-02-15 Panel budowlany ze sprężonymi krawędziami
EP06716899.7A EP1915492B1 (fr) 2005-02-15 2006-02-15 Panneau de construction a bords comprimes

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05003173A EP1691005B1 (fr) 2005-02-15 2005-02-15 Procédé de fabrication de planches der plancher avec des bords comprimés
PCT/SE2006/000209 WO2006088417A2 (fr) 2005-02-15 2006-02-15 Panneau de construction a bords comprimes
EP06716899.7A EP1915492B1 (fr) 2005-02-15 2006-02-15 Panneau de construction a bords comprimes

Publications (3)

Publication Number Publication Date
EP1915492A2 EP1915492A2 (fr) 2008-04-30
EP1915492A4 EP1915492A4 (fr) 2012-09-05
EP1915492B1 true EP1915492B1 (fr) 2017-08-16

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EP05003173A Expired - Lifetime EP1691005B1 (fr) 2005-02-15 2005-02-15 Procédé de fabrication de planches der plancher avec des bords comprimés
EP06716899.7A Active EP1915492B1 (fr) 2005-02-15 2006-02-15 Panneau de construction a bords comprimes

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EP05003173A Expired - Lifetime EP1691005B1 (fr) 2005-02-15 2005-02-15 Procédé de fabrication de planches der plancher avec des bords comprimés

Country Status (24)

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EP (2) EP1691005B1 (fr)
JP (1) JP4926983B2 (fr)
KR (1) KR101274135B1 (fr)
CN (2) CN100485150C (fr)
AT (1) ATE440190T1 (fr)
AU (1) AU2006214827B2 (fr)
BR (1) BRPI0606347A2 (fr)
CA (1) CA2598340C (fr)
CY (1) CY1109628T1 (fr)
DE (1) DE602005016069D1 (fr)
DK (1) DK1691005T3 (fr)
ES (1) ES2330753T3 (fr)
HR (1) HRP20090585T1 (fr)
IL (1) IL184579A0 (fr)
NO (1) NO339541B1 (fr)
NZ (1) NZ556542A (fr)
PL (2) PL1691005T3 (fr)
PT (1) PT1691005E (fr)
RS (1) RS51078B (fr)
RU (1) RU2358076C1 (fr)
SI (1) SI1691005T1 (fr)
UA (1) UA91212C2 (fr)
WO (1) WO2006088417A2 (fr)
ZA (1) ZA200706082B (fr)

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Also Published As

Publication number Publication date
IL184579A0 (en) 2007-10-31
UA91212C2 (ru) 2010-07-12
RU2358076C1 (ru) 2009-06-10
KR101274135B1 (ko) 2013-06-13
EP1691005A1 (fr) 2006-08-16
PT1691005E (pt) 2009-11-04
AU2006214827A1 (en) 2006-08-24
EP1691005B1 (fr) 2009-08-19
HRP20090585T1 (hr) 2009-12-31
NO20073577L (no) 2007-11-07
AU2006214827B2 (en) 2011-07-14
NZ556542A (en) 2010-11-26
DK1691005T3 (da) 2009-11-30
CN101120145A (zh) 2008-02-06
NO339541B1 (no) 2016-12-27
CN100485150C (zh) 2009-05-06
EP1915492A2 (fr) 2008-04-30
KR20070107125A (ko) 2007-11-06
BRPI0606347A2 (pt) 2009-06-16
JP4926983B2 (ja) 2012-05-09
RS51078B (sr) 2010-10-31
PL1915492T3 (pl) 2018-01-31
CN101503907A (zh) 2009-08-12
CA2598340C (fr) 2014-07-15
DE602005016069D1 (de) 2009-10-01
ZA200706082B (en) 2009-02-25
CA2598340A1 (fr) 2006-08-24
PL1691005T3 (pl) 2010-01-29
ATE440190T1 (de) 2009-09-15
EP1915492A4 (fr) 2012-09-05
CN101503907B (zh) 2012-06-13
WO2006088417A3 (fr) 2006-11-09
ES2330753T3 (es) 2009-12-15
CY1109628T1 (el) 2014-08-13
JP2008530409A (ja) 2008-08-07
WO2006088417A2 (fr) 2006-08-24
SI1691005T1 (sl) 2010-01-29

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