EP2574436A1 - Procédé de fabrication d'un contreplaqué latté multicouche à partir de lamelles solides de bois de conifère à dureté et résistance à l'abrasion améliorées - Google Patents

Procédé de fabrication d'un contreplaqué latté multicouche à partir de lamelles solides de bois de conifère à dureté et résistance à l'abrasion améliorées Download PDF

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Publication number
EP2574436A1
EP2574436A1 EP11461539A EP11461539A EP2574436A1 EP 2574436 A1 EP2574436 A1 EP 2574436A1 EP 11461539 A EP11461539 A EP 11461539A EP 11461539 A EP11461539 A EP 11461539A EP 2574436 A1 EP2574436 A1 EP 2574436A1
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EP
European Patent Office
Prior art keywords
panel
lamellas
glued
calibrated
blockboard
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.)
Withdrawn
Application number
EP11461539A
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German (de)
English (en)
Inventor
Ludwik Olczyk
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to EP11461539A priority Critical patent/EP2574436A1/fr
Publication of EP2574436A1 publication Critical patent/EP2574436A1/fr
Withdrawn legal-status Critical Current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
    • 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
    • B27M3/0013—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles
    • B27M3/0026—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally
    • B27M3/0053—Manufacture or reconditioning of specific semi-finished or finished articles of composite or compound articles characterised by oblong elements connected laterally using glue
    • 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
    • B27M3/06—Manufacture or reconditioning of specific semi-finished or finished articles of flooring elements, e.g. parqueting blocks of composite floor plates per se by assembling or jointing the parqueting blocks
    • 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
    • E04F15/047—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 with a butcher-block like top surface

Definitions

  • the invention relates to the method of producing the refined multilayer blockboard used as a panel in the production of furniture intended for exploitation in harsh conditions or as a panel for outer facade and as a clapboard or a floor panel.
  • Coniferous wood especially pinewood
  • pinewood is used as one of the core building and decorative materials in the building industry and furniture joinery. This is due to the great availability of this material, its high decorative quality, as well as its low price compared to other types of wood.
  • the only disadvantage of wood, pinewood in particular, is its low durability in terms of stress and abrasibility.
  • publication PL 346794 and PL 331003 are known, which present waterborne polyurethane dispersions, polyurethane, polyester, polymethacrylate or epoxy and their usage as coating agents, for example for varnishing wood, which harden exposed to radiation.
  • the invention relates to the method for manufacturing the multilayer blockboard, in which round wood of a thickness increase of no more than 0,3 mm and a log diameter of no less than 0,2 m is selected and chosen.
  • the log is sawed into beams to achieve grain as sloped as possible on the wide surface.
  • wood is gently dried to a humidity of a few %, optimally 7 - 9 %. Dried wood is cut out to achieve lamellas of the same thickness with simultaneous twofold milling of the surface which forms the glue fugue.
  • the lamellas are sorted out and those are chosen whose width of growth rings does not exceed 2,5 mm and which grain arrangement in proportion to the working surface is at an angle of 90 degrees with a deviation in both directions of no more than 25 degrees for lamellas of a thickness of from 10 - 14 mm.
  • One of the milled sides of the lamella is covered with a class D4 or C4 resistant adhesive, while the lamellas of the same thickness are put in parallel with each other so that the whittled side touches the glued whittled side and the surfaces after processing are put upwards and downwards horizontally.
  • the prepared panel is placed in a hydraulic press at a temperature of 94-105 degrees with constant pressure control which decrease should not exceed a maximum of 5 % of given pressure, the glued panel is calibrated using the grinding method and afterwards the calibrated panel is glued crosswise into a standard blockboard with the use of glue as stated before, whereby a panel of thickness above 14 mm is cut again into lamellas transverse to the configuration of growth rings and lamellas are again glued into the panel, whereas glue compatible with the norm D4/C4 is put one-sidedly into grinded surfaces, where the grinded surface is being connected with the glued grinded surface or the calibrated panel is glued in layers with a similar calibrated panel or panels with lamellas put crosswise and finally the grinded panel is covered with curing agents with the additional usage of UV radiation.
  • the grinded panel is effectively covered with agents made by the company Kleiberit: the curing agent PUR 555 NANO and then covered with the agent PUR HC 717.7 or 717.8 in a quantity of 60 - 100 g/m 2 in a temperature from 100 to 140 Celsius degrees and is cured by UV radiation with a coat of TopCoat 817, 10-15 g/m 2 coverage dosage. The entirety is afterwards rolled and left for 12 to 24 hours to attain the requested resistance.
  • agents made by the company Kleiberit: the curing agent PUR 555 NANO and then covered with the agent PUR HC 717.7 or 717.8 in a quantity of 60 - 100 g/m 2 in a temperature from 100 to 140 Celsius degrees and is cured by UV radiation with a coat of TopCoat 817, 10-15 g/m 2 coverage dosage.
  • the entirety is afterwards rolled and left for 12 to 24 hours to attain the requested resistance.
  • the above mentioned method makes it possible to manufacture a panel from soft coniferous wood which is characterized by unique pattern-design of very high resistance to climate conditions and chemical agents and which. At the same time, it possesses a high resistance to mechanical manipulation - abrasion and kneading, not yet achieved.
  • the introduction of polyurethane agents applied in high temperatures to the method for finishing a panel allows the panel to achieve new, previously unattainable parameters of surface protection.
  • the panel manufactured as a result of a proper selection of growth rings, its processing, gluing and coating ensures obtaining a surface layer which is resistant to microcracks, UV radiation and atmospheric factors, resistant to scratches and at the same time highlights the aesthetic quality of the wood, wood optics, and its structure.
  • Composites manufactured with the use of the described technology can find application especially in the building industry as floor coverings (plank panel), stair steps, window sills and in furniture joinery as table worktops and kitchen table tops. Their durability is greatly enhanced even during intensive exploitation and is comparable to hard types of wood such as oak and beech, as well as exotic wood, but manufactured at a low price.
  • fig. 1 shows the sawing of a log into beams
  • fig. 2 shows the sorting of lamellas of a thickness of 10 - 14 mm
  • fig. 3 the sorting of lamellas of a thickness of 14 - 43 mm
  • fig. 4 presents the gluing of lamellas
  • fig.5 the creation of a panel from layers of glued lamellas.
  • the method of manufacturing a panel begins from the selection of round coniferous wood, usually pine, of very big thickness. Yearly growths should not exceed 3 mm and the diameter of the log should not be smaller than 200 mm. Tree butt elements of a length of up to 4500 m of the smallest amount of lumber defects (knots visible on the surface) are used for the cut-out. The sorting is conducted manually.
  • the log, as shown in fig.1 is sawn into beams of a thickness of 48 - 55 mm and a width of 110 - 180 mm to achieve grain as sloped as possible on the wide surface.
  • the cut-out wood is gently dried which prevents the creation of microcracks and deformations and brought to a humidity of 7 - 9 %.
  • the obtained lamellas 1 are given a thickness of 10 - 43 mm and width of 43 - 48 mm.
  • the whittling of glued surfaces is conducted in a way, in which a planer with a spindle rotation speed of 5800 - 6100 rpm is used with a rate of linear travel in the range of 6-7,5 m/min for every knife installed in the head.
  • the cut-out is set in such a way to achieve from one beam lamellas of the same thickness.
  • Lamellas, as in fig.2 , of a thickness of 10 - 14 are sorted by grain arrangement and grain width - early growth.
  • the sorting is made manually or with the usage of scanners, which very precisely determine the grain's width and its arrangement.
  • Mechanical sorting is being conducted with the usage of cameras and a computer.
  • the sorting of lamellas of a thickness of 10 - 14 mm is made by choosing lamellas which width of growth rings does not exceed 2,5 mm and which arrangement in proportion to the wide surface is at an angle of 90 degrees with a deviation in both directions of no more than 25 degrees.
  • the growth rings are chosen with a width not exceeding 2,5 mm.
  • Lamellas sorted by grain width and by grain arrangement are segregated into lamellas of the same thickness and are prepared to be created by blockboard gluing.
  • the surfaces which were submitted to the process are only one-sidedly covered with glue in the amount of 80 - 120 gram/m 2 .
  • the glue which is used, must meet class D4 or C4 resistance parameters.
  • Glued lamellas are put in parallel with each other so that the whittled side touches the glued whittled side, as shown in fig.4 , and the surfaces after processing are put upwards and downwards horizontally.
  • the prepared panel is placed in a hydraulic press with constant pressure control and a system which enables the replenishment of pressure in case of its decrease during the press process. The decrease should not exceed a maximum of 5 % of given pressure.
  • High temperature gluing is being conducted between two heat shelves which have both a heat and lamella leveling function.
  • the temperature of gluing should be kept around 94 - 105 degrees Celsius.
  • the strength of the leveling grip is 3,5-4,5 kg/cm 2 .
  • the strength of the lateral glue grip is 8.000 - 10.000 kg/mb with a press width of 1100 - 1900 mm.
  • the time of the press is 90 - 240 s.
  • the glued panel is calibrated using the grinding method with a surface finish applied with sandpaper of a granulation of 120-150. During the calibration 0,6 - 0,8 mm is grinded per side. The grinding in the applied granulation ensures an optimal penetration of the glue and at the same time a minimal necessity of filling pores resulting in the connection becoming optimally durable.
  • the calibrated panel of a width of 8,4 - 12,4 mm is glued crosswise, as shown in fig.5 , into a standard blockboard with the use of glue compatible with the norm D4 or C4.
  • the coverage dosage of the glue is 100 - 140 gram/m 2 .
  • the strength of the press grip is set to 10-12 kg/cm 2 .
  • the panel of a thickness of 14 - 41,6 mm is cut into lamellas of a thickness of 10 - 12 mm transverse to the configuration of growth rings. Lamellas are again glued into the panel. 80 - 120 gram/m 2 of the adhesive is put one-sidedly into grinded surface. The adhesive should be compatible with the norm D4/C4. The lamellas are put next to each other so the grinded surface is being connected with the glued grinded surface. The initially placed panel is glued according to the press pressures given before.
  • the glued panel is calibrated using the grinding method using sandpaper with a surface finish of a minimal granulation of 120-150.
  • the calibrated panel is glued into waterproof plywood of a thickness of 10 - 12 mm or a traditional blockboard manufactured using class D4 or C4 glue connections.
  • the plywood (bearing panel) is calibrated beforehand keeping the same surface finish parameters as the prepared to be glued panel.
  • Glue which is compatible with the norm D4 or C4 is used.
  • the glue coverage dosage is 100 -140 gram/m 2 .
  • the pressure force for the gluing is set in the range of 10 - 12 kg/cm 2 .
  • the panel is grinded and finished using sandpaper of a granulation of 180 - 220. After the grinding the surface is heated with infrared radiation and then the PUR 555 NANO agent produced by "Kleiberit" is thermally applied with the use of rollers. Directly after that the PUR HC 717.7 or 717.8 agent is applied. Both agents are applied in quantities of 60 - 100 gram m 2 . Then UV TopCoat 817 is applied directly onto the agent. It is afterwards hardened by UV radiation of an intensity of about 160 W. Next, the entirety is rolled and left for 12 to 24 hours. After that time it attains surface resistance of no less than 6 class.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Manufacturing & Machinery (AREA)
  • Forests & Forestry (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
EP11461539A 2011-09-29 2011-09-29 Procédé de fabrication d'un contreplaqué latté multicouche à partir de lamelles solides de bois de conifère à dureté et résistance à l'abrasion améliorées Withdrawn EP2574436A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11461539A EP2574436A1 (fr) 2011-09-29 2011-09-29 Procédé de fabrication d'un contreplaqué latté multicouche à partir de lamelles solides de bois de conifère à dureté et résistance à l'abrasion améliorées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11461539A EP2574436A1 (fr) 2011-09-29 2011-09-29 Procédé de fabrication d'un contreplaqué latté multicouche à partir de lamelles solides de bois de conifère à dureté et résistance à l'abrasion améliorées

Publications (1)

Publication Number Publication Date
EP2574436A1 true EP2574436A1 (fr) 2013-04-03

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EP11461539A Withdrawn EP2574436A1 (fr) 2011-09-29 2011-09-29 Procédé de fabrication d'un contreplaqué latté multicouche à partir de lamelles solides de bois de conifère à dureté et résistance à l'abrasion améliorées

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EP (1) EP2574436A1 (fr)

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB787169A (en) * 1956-06-08 1957-12-04 Winsorflor Ltd Improvements in or relating to the covering of floors or walls
US3481810A (en) * 1965-12-20 1969-12-02 John C Waite Method of manufacturing composite flooring material
US3878016A (en) * 1972-07-18 1975-04-15 Dantani Plywood Co Process for producing sliced veneer
DE2404898A1 (de) * 1974-02-01 1975-08-14 Otto Kreibaum Verfahren zur aufarbeitung von rundholz
DE3904066A1 (de) * 1988-10-14 1990-04-19 Thanheiser Schreiner Werkstaet Selbstklebende parkettfliese und verfahren zur herstellung von stirnholzelementen
US5034259A (en) 1988-06-23 1991-07-23 The Weyerhaeuser Company Process for re-manufacturing wood board and the product produced thereby
US5050653A (en) * 1990-06-01 1991-09-24 Brown Donald W Laminated wood process for using waste offcut strips and products thereof
US5213861A (en) * 1991-09-04 1993-05-25 Severson Thomas A Wooden tile and method for making same
FR2719252A1 (fr) * 1994-05-02 1995-11-03 Pitkanen Risto Heikki Procédé de fabrication de lames de parquet.
PL331003A1 (en) 1996-07-26 1999-06-21 Henkel Kgaa Method of improving superficial strength of workpieces made of woodem materials
PL346794A1 (en) 2000-04-03 2001-10-08 Bayer Ag Polyurethane dispersions
US20030010434A1 (en) 2001-06-13 2003-01-16 Les Placements R. Grenier Inc. Process of making a lamellated wood product
EP1721714A1 (fr) * 2005-05-02 2006-11-15 Holzindustrie Leitinger Gesellschaft M.B.H. Poutre composite en bois
US20060263567A1 (en) 2003-04-17 2006-11-23 Hofste Roy J Method of producing wood structures and building element comprising such wood structures
WO2008113890A1 (fr) 2007-03-19 2008-09-25 Stora Enso Timber Oy Ltd Produit en bois collé et procédé de fabrication d'un produit en bois collé
CN101302887A (zh) * 2008-06-18 2008-11-12 吴殿满 原木横切立体实木复合地板及其制备方法
RU2357054C2 (ru) 2006-12-26 2009-05-27 Александр Владимирович Греков Композиционный деревянный брус
WO2010086051A1 (fr) * 2009-01-30 2010-08-05 Fritz Egger Gmbh & Co. Og Procédé de production d'un support de lamelles de bois lamellé-collé

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB787169A (en) * 1956-06-08 1957-12-04 Winsorflor Ltd Improvements in or relating to the covering of floors or walls
US3481810A (en) * 1965-12-20 1969-12-02 John C Waite Method of manufacturing composite flooring material
US3878016A (en) * 1972-07-18 1975-04-15 Dantani Plywood Co Process for producing sliced veneer
DE2404898A1 (de) * 1974-02-01 1975-08-14 Otto Kreibaum Verfahren zur aufarbeitung von rundholz
US5034259A (en) 1988-06-23 1991-07-23 The Weyerhaeuser Company Process for re-manufacturing wood board and the product produced thereby
DE3904066A1 (de) * 1988-10-14 1990-04-19 Thanheiser Schreiner Werkstaet Selbstklebende parkettfliese und verfahren zur herstellung von stirnholzelementen
US5050653A (en) * 1990-06-01 1991-09-24 Brown Donald W Laminated wood process for using waste offcut strips and products thereof
US5213861A (en) * 1991-09-04 1993-05-25 Severson Thomas A Wooden tile and method for making same
FR2719252A1 (fr) * 1994-05-02 1995-11-03 Pitkanen Risto Heikki Procédé de fabrication de lames de parquet.
PL331003A1 (en) 1996-07-26 1999-06-21 Henkel Kgaa Method of improving superficial strength of workpieces made of woodem materials
PL346794A1 (en) 2000-04-03 2001-10-08 Bayer Ag Polyurethane dispersions
US20030010434A1 (en) 2001-06-13 2003-01-16 Les Placements R. Grenier Inc. Process of making a lamellated wood product
US20060263567A1 (en) 2003-04-17 2006-11-23 Hofste Roy J Method of producing wood structures and building element comprising such wood structures
EP1721714A1 (fr) * 2005-05-02 2006-11-15 Holzindustrie Leitinger Gesellschaft M.B.H. Poutre composite en bois
RU2357054C2 (ru) 2006-12-26 2009-05-27 Александр Владимирович Греков Композиционный деревянный брус
WO2008113890A1 (fr) 2007-03-19 2008-09-25 Stora Enso Timber Oy Ltd Produit en bois collé et procédé de fabrication d'un produit en bois collé
CN101302887A (zh) * 2008-06-18 2008-11-12 吴殿满 原木横切立体实木复合地板及其制备方法
WO2010086051A1 (fr) * 2009-01-30 2010-08-05 Fritz Egger Gmbh & Co. Og Procédé de production d'un support de lamelles de bois lamellé-collé

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