EP0710533A1 - Verfahren, Vorrichtung und Prägewalze zum Anbringen eines Musters auf der Oberfläche eine Faserplatte - Google Patents

Verfahren, Vorrichtung und Prägewalze zum Anbringen eines Musters auf der Oberfläche eine Faserplatte Download PDF

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Publication number
EP0710533A1
EP0710533A1 EP95202931A EP95202931A EP0710533A1 EP 0710533 A1 EP0710533 A1 EP 0710533A1 EP 95202931 A EP95202931 A EP 95202931A EP 95202931 A EP95202931 A EP 95202931A EP 0710533 A1 EP0710533 A1 EP 0710533A1
Authority
EP
European Patent Office
Prior art keywords
fibreboard
moving
die element
pattern
die
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.)
Ceased
Application number
EP95202931A
Other languages
English (en)
French (fr)
Inventor
Lambert Van Den Bosch
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.)
HOUTHANDEL LAMBERT VAN DEN BOSCH BV
Original Assignee
HOUTHANDEL LAMBERT VAN DEN BOSCH BV
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 HOUTHANDEL LAMBERT VAN DEN BOSCH BV filed Critical HOUTHANDEL LAMBERT VAN DEN BOSCH BV
Publication of EP0710533A1 publication Critical patent/EP0710533A1/de
Ceased legal-status Critical Current

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Classifications

    • 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

Definitions

  • the invention relates to a method for applying a relief pattern to a fibreboard surface, in which a heated die element is brought into contact with the fibreboard surface by the application of pressure.
  • a fibreboard is first understood a wood fibreboard, being MDF (Medium Density Fibreboard) as well as HDF (High Density Fibreboard), but fibreboards containing other fibre material, such as hemp, flax and even synthetic fibres, are also suitable for being applied to the present invention.
  • MDF Medium Density Fibreboard
  • HDF High Density Fibreboard
  • a disadvantage of said known method is that a heated moulding plate must each time be pressed on an edge, held in the pressed state for some time and then must be withdrawn again, upon which a new fibreboard can replace the old one in order to undergo a similar treatment. This requires a relatively complicated and extensive equipment and leads to slow production rates.
  • the invention aims at removing or reducing the above-mentioned disadvantages and in particular at providing a method and device that enable a quick and cheap application of a pattern to the main surface as well as to an edge surface of a fibreboard.
  • the die element is of the co-moving type with the pattern to be applied on the co-moving surface, which co-moving surface moves along with the surface of the fibreboard.
  • the die element is a roller.
  • a high local pressure is obtained and also a simple device.
  • the relief of the pattern is 0.2 - 0.6 mm high with respect to a, apart from that, smooth surface.
  • This embodiment of the invention has been found to give a sufficiently distinct pattern, in which the local slits of the relief in the fibreboard do not lead to the formation of protruding fine hairs nor any other roughnesses.
  • the relief pattern contains thin lines having halfway their height a width of at most 0.25 mm.
  • the elements of the relief pattern have a larger width it is desired that they protrude less from the smooth surface.
  • more than one die element of the co-moving type cooperate with the same surface or an other surface of the fibreboard.
  • the co-moving surfaces of several die elements of the co-moving type are located in different planes and cooperate with different surfaces of the fibreboard.
  • a pattern can be applied as well, but in most cases this is unnecessary, so that a smooth surface will suffice, wherefrom, also in case of painting treatment, no fine hairs will protrude.
  • the die element is of the co-moving type and that moving means are present in order to cause the die element and the fibreboard to carry out a co-movement.
  • the invention also comprises a device for applying the method.
  • the device according to the invention is characterized in that the die element is of the co-moving type and that moving means are present in order to cause the die element and the fibreboard to carry out a co-movement.
  • the support roller is here the driving means.
  • the die element preferably has a relief pattern containing relief parts that protrude from the superficies of the roller. These preferably have a height of 0.2 up to 0.6 mm above the surface.
  • the relief roller can be of any hard material, but already in a trial set up satisfactory results have been achieved with a steel roller, onto which also a chromium containing surface-hardened layer can be applied.
  • Heating the relief roller preferably takes place by means of electric heating elements fixed at the crosscut sides of the roller.
  • the electrical feeding of said elements can take place in the manner known per se through slip contacts.
  • the relief roller has all sorts of projections and a contact temperature probe is therefore impossible. It has, however, been found that when an other temperature, namely the one located at a small distance of the surface, is established in radiation interchange with it by the temperature probe, it can be very well used as a control quantity. Once it has been established at which temperature indication of the probe the right operation point is reached, controlling can be done by virtue of this temperature measurement as well.
  • the invention also comprises a die element such as a relief roller, applicable in the method or capable of being included in the device according to the invention. Together with the protruding relief parts, the surface of the element can be provided with a chromium containing hardened layer.
  • a die element such as a relief roller
  • the surface of the element can be provided with a chromium containing hardened layer.
  • the axis is indicated of the relief roller 2, which at its ends is mounted in bearings 3 and 4.
  • the roller 2 is made of solid metal, preferably steel, and is at its crosscut surfaces in heat-interchange with electric elements 5 and 6. Said elements heat the intermediate section of the axis 1 in the same way as the roller 2, so that no excessive thermal stresses occur.
  • the roller 2 has been provided with moulded patterns 7, which protrude for instance by 0.4 mm from the surface 8 of the roller 2.
  • a complex of slip rings 9 ensures the connection to both heating elements 5 and 6.
  • the supports 3 and 4 are preferably adjustable in vertical direction, in which a rigid resilient mounting, which means a great force variation at a slight displacement, is preferred.
  • the roller 2 is preferably idle.
  • the fibreboard 10 which with its upper side touches the relief roller 2, is supported by a support roller 11, which is mounted on an axis 12 preferably driven in a manner not further indicated.
  • a side elevation of the device is schematically represented.
  • the conveyor rollers 13 with in between support elements 14 form a support for the fibreboard 10, which is preferably subjected from above to the action of pressing rollers 15, as a result of which it is achieved in a manner known per se that the board 10 slides over the support plates 14 with a slight friction and can be driven by one or more rollers 13.
  • the board then advances between the relief roller 2 and the support roller 11, in which its upper surface is provided with the relief pattern, which is applied to the surface of the relief roller 2.
  • the operation can be carried out with a velocity of 40-60 m per minute and the width of the board is in principle not subject to any limitations.
  • Tests with a roller 2 with an axial length of 20 cm and a girth of 72 cm have produced good results. It has been found that such a roller can be brought at the right temperature in about thirty minutes by means of two heating elements 5 and 6 of 2 kW each.
  • Fig. 3 shows an example of a relief pattern in imitation of a wood grain.
  • the pattern is composed of relatively short pieces of line 16, each of them having an upward tapering shape with halfway their height a width of about 0.2 up to 0.1 mm.
  • relief-pattern lines cut smoothly into the fibreboard without thin hairs disengaging themselves nor the occurrence of roughness in any other way.
  • a cross-sectional shape by virtue of the removal of material, such as shaving and/or moulding, can be effected in a manner known per se. Subsequently, said edges can be smoothed by means of fixed ironing elements or heated rollers, in which said rollers usually are located approximately perpendicular to the bevelled moulded edge section of the fibreboard.
  • the relief roller has a cylindrical shape with pattern elements protruding from it. It is now possible that in the sections of the cylindrical wall parts have been removed, resulting in surface parts of the fibreboard not being touched by the roller. This may cause a (slight) colour shade.
  • the invention provides a great saving when applying patterns, in particular wood-grain patterns, to the fibreboard, the quality of the result being better than when using methods employed thus far.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Paper (AREA)
EP95202931A 1994-11-02 1995-10-31 Verfahren, Vorrichtung und Prägewalze zum Anbringen eines Musters auf der Oberfläche eine Faserplatte Ceased EP0710533A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL9401818 1994-11-02
NL9401818A NL9401818A (nl) 1994-11-02 1994-11-02 Werkwijze, inrichting en reliëfrol om een oppervlak van een vezelplaat van een patroon te voorzien.

Publications (1)

Publication Number Publication Date
EP0710533A1 true EP0710533A1 (de) 1996-05-08

Family

ID=19864854

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95202931A Ceased EP0710533A1 (de) 1994-11-02 1995-10-31 Verfahren, Vorrichtung und Prägewalze zum Anbringen eines Musters auf der Oberfläche eine Faserplatte

Country Status (2)

Country Link
EP (1) EP0710533A1 (de)
NL (1) NL9401818A (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718770A1 (de) * 1997-05-03 1998-11-05 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von strukturierten Holzwerkstoffplatten
DE19718771A1 (de) * 1997-05-03 1998-11-05 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von Holzwerkstoffplatten
WO1999046094A1 (de) * 1998-03-10 1999-09-16 Wendt Maschinenbau Gmbh & Co. Kg Verfahren zur finalen oberflächenbearbeitung von rauhen spanplatten oder ähnlichen bauteilen und vorrichtung dafür
DE19812523A1 (de) * 1998-03-21 1999-11-18 Schenck Panel Production Syste Verfahren und Vorrichtung zur Strukturierung glatter Holzwerkstoffplatten
WO2005054600A1 (de) * 2003-12-04 2005-06-16 Hamberger Industriewerke Gmbh Fliese
EP4292831A1 (de) * 2022-06-15 2023-12-20 Josef Schiele Vorrichtung und verfahren zur thermomechanischen oberflächenstrukturierung einer fase eines fussbodenelements sowie fertigungslinie zur fertigung von fussbodenelementen

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483057A (en) * 1967-12-27 1969-12-09 Grace W R & Co Apparatus and process for producing an embossed plastic laminate
DE2421576A1 (de) * 1973-05-04 1974-11-21 Statens Skogsind Ab Verfahren zum herstellen gemusterter harter holzfaserplatten
US4007076A (en) * 1974-12-30 1977-02-08 Masonite Corporation Post-press embossing of a consolidated man-made board
US4007767A (en) * 1972-01-07 1977-02-15 Colledgewood, Ltd. Highspeed rotary branding process having increased die life
US4104429A (en) * 1975-07-24 1978-08-01 Colledge Gary C Branded wood based composition board product
US4197078A (en) 1977-11-03 1980-04-08 Masonite Corporation Apparatus for edge treatment for fibreboard panels and the like
US4221758A (en) * 1978-09-01 1980-09-09 Armstrong Cork Company Method of embossing wood grain patterns
EP0187665A1 (de) 1985-01-08 1986-07-16 Bison-Werke Bähre & Greten GmbH & Co. KG Verfahren und Anlage zum kontinuierlichen Herstellen und Oberflächenveredeln einer in einem Pressspalt unter Hitzeeinwirkung erzeugten Plattenbahn
EP0371371A2 (de) * 1988-11-30 1990-06-06 Glunz Ag Verfahren zur Erzeugung einer Struktur, insbesondere Holzstruktur, in die Oberfläche einer ausgehärteten Faserplatte

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483057A (en) * 1967-12-27 1969-12-09 Grace W R & Co Apparatus and process for producing an embossed plastic laminate
US4007767A (en) * 1972-01-07 1977-02-15 Colledgewood, Ltd. Highspeed rotary branding process having increased die life
DE2421576A1 (de) * 1973-05-04 1974-11-21 Statens Skogsind Ab Verfahren zum herstellen gemusterter harter holzfaserplatten
US4007076A (en) * 1974-12-30 1977-02-08 Masonite Corporation Post-press embossing of a consolidated man-made board
US4104429A (en) * 1975-07-24 1978-08-01 Colledge Gary C Branded wood based composition board product
US4197078A (en) 1977-11-03 1980-04-08 Masonite Corporation Apparatus for edge treatment for fibreboard panels and the like
US4221758A (en) * 1978-09-01 1980-09-09 Armstrong Cork Company Method of embossing wood grain patterns
EP0187665A1 (de) 1985-01-08 1986-07-16 Bison-Werke Bähre & Greten GmbH & Co. KG Verfahren und Anlage zum kontinuierlichen Herstellen und Oberflächenveredeln einer in einem Pressspalt unter Hitzeeinwirkung erzeugten Plattenbahn
EP0371371A2 (de) * 1988-11-30 1990-06-06 Glunz Ag Verfahren zur Erzeugung einer Struktur, insbesondere Holzstruktur, in die Oberfläche einer ausgehärteten Faserplatte

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19718770A1 (de) * 1997-05-03 1998-11-05 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von strukturierten Holzwerkstoffplatten
DE19718771A1 (de) * 1997-05-03 1998-11-05 Dieffenbacher Gmbh Maschf Verfahren und Anlage zur Herstellung von Holzwerkstoffplatten
US6312632B1 (en) * 1997-05-03 2001-11-06 Maschinenfabrik J. Dieffenbacher Gmbh & Co. Process for the production of wood-based boards having structured surfaces
WO1999046094A1 (de) * 1998-03-10 1999-09-16 Wendt Maschinenbau Gmbh & Co. Kg Verfahren zur finalen oberflächenbearbeitung von rauhen spanplatten oder ähnlichen bauteilen und vorrichtung dafür
DE19812523A1 (de) * 1998-03-21 1999-11-18 Schenck Panel Production Syste Verfahren und Vorrichtung zur Strukturierung glatter Holzwerkstoffplatten
WO2005054600A1 (de) * 2003-12-04 2005-06-16 Hamberger Industriewerke Gmbh Fliese
EP4292831A1 (de) * 2022-06-15 2023-12-20 Josef Schiele Vorrichtung und verfahren zur thermomechanischen oberflächenstrukturierung einer fase eines fussbodenelements sowie fertigungslinie zur fertigung von fussbodenelementen

Also Published As

Publication number Publication date
NL9401818A (nl) 1996-06-03

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