EP2367989A2 - Baueinheiten für möbel und verfahren zur herstellung solcher baueinheiten - Google Patents

Baueinheiten für möbel und verfahren zur herstellung solcher baueinheiten

Info

Publication number
EP2367989A2
EP2367989A2 EP09771563A EP09771563A EP2367989A2 EP 2367989 A2 EP2367989 A2 EP 2367989A2 EP 09771563 A EP09771563 A EP 09771563A EP 09771563 A EP09771563 A EP 09771563A EP 2367989 A2 EP2367989 A2 EP 2367989A2
Authority
EP
European Patent Office
Prior art keywords
board
sheet
fiber material
laths
fiber
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
EP09771563A
Other languages
English (en)
French (fr)
Other versions
EP2367989B1 (de
Inventor
Benny Andersson
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.)
Inter Ikea Systems BV
Original Assignee
Inter Ikea Systems 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 Inter Ikea Systems BV filed Critical Inter Ikea Systems BV
Publication of EP2367989A2 publication Critical patent/EP2367989A2/de
Application granted granted Critical
Publication of EP2367989B1 publication Critical patent/EP2367989B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures

Definitions

  • This invention pertains in general to the field of building units for manufacturing of furniture, and a manufacturing method thereof. More particularly the invention relates to building units, comprising a distance material and board material.
  • WO 90/04515 describes a method wherein such units are sawn across the laths in a transversal plane in respect of the longitudinal axis of the laths, such that a number of elongated pieces with rectangular cross section are obtained, where after said pieces are rotated 90 degrees about their longitudinal axis and positioned parallel to each other on a third glue coated panel and covered with a fourth glue coated panel. Thereafter, the third and the fourth panel are subjected to pressure and glued together with the pieces in between. Finally, the unit thus produced is sawn along and between the elongated pieces.
  • the obtained product is however still comparatively heavy, since at least two sides, i.e. the ends, are made entirely of wood, particle board, or the like, not being of a light weight material, such as a distance material. Also, only parts of the product having pieces of laths underneath will be suitable for mounting elements thereon.
  • an improved composite board product would be advantageous, and in particular a board product having a comparatively low density, allowing for decreased weight of the product, resulting in a cost-effective manufacturing and transportation procedure, while still allowing for the possibility to rigidly attach other parts, such as armature, fittings, screw members etc, on parts not necessarily having parts of laths underneath, would be advantageous.
  • the present invention preferably seeks to mitigate, alleviate or eliminate one or more of the above-identified deficiencies in the art and disadvantages singly or in any combination and solves at least the above mentioned problems by providing a article, comprising two boards and a distance materia) there in between, characterized by at least one first sheet of a fiber material being arranged in between said distance material and said first or second board; and methods for manufacturing such article.
  • Fig. 1 is an elevated view of an embodiment of the present invention
  • Fig. 2 is an elevated view of a second embodiment of the present invention.
  • Fig. 3 is an elevated view of a third embodiment of the present invention.
  • Fig. 1 illustrates a perspective view of an article 100 according to one embodiment of the present invention.
  • the article 100 is manufactured by arranging at least two laths 101, 102 on a first board 103, such as a fiber board, such as a HDF or MDF board.
  • the laths 101, 102 arc preferably arranged parallel to each other, extending longitudinally along two opposite sides/edges of the first board 103.
  • additional laths may be arranged in parallel with the two laths 101 , 102 on said first board 103.
  • the laths may be adhered to the first board by gluing, or other suitable adhering method or means.
  • a first strip 104 of a fiber material may then be applied and/oi adhered to the first board.
  • the strip may be arranged in parallel or perpendicular to the longitudinal extension of the laths 101, 102.
  • the fiber material may be flexible, such that it is possible to roll the product into a roll, whereby the applying of the first strip 104 on the first board may be performed by simply rolling the strip into place.
  • the strip 104 of a fibermaterial may be manufactured by a manufacturing method, wherein long, slim fibers arc created by defibration of starting material, to make it reliable.
  • Starting material may be wooden chips made from any kind of wood, but also non-wooden materia] from e.g. one-year crops, such as straw and bagasse may be used.
  • the decomposition may for example be performed in a defibrator of known kind.
  • a defibator is a thermo-mechanical pulping refiner, in which the pulp material, such as wood chips, is ground in an environment of steam between a rotating grinding disc and a stationary disc each with radial grooves that provides the grinding surface.
  • Wood chips are fed into the centre and are broken down as the centrifugal force pushes them towards the circumference of the discs where the grooves are finer to produce wood fiber.
  • the decomposition is performed with an energy input in the in the range from 50 to 150 kWh/metric ton starting material. Said energy input is lower than most processes known within the art. This gives the advantage of slimmer/longer fibers, which is one of the factors providing a flexible fiber product.
  • the fibers that are created by the decomposition are substantially or dominantly slim fibers.
  • the term fibers both mean singular fibers and bundles of fibers. Fiber bundles are generally longer than single fibers.
  • the term slim fibers are fibers where the relationship between the length and the thickness is at least 20, i.e. 20: 1.
  • Fibers of lignocelluloses are mechanically decomposed from larger particles, such as wooden chips. This decomposition may take place in a rotating mill, followed by heating to different temperature levels.
  • the decomposition process may be varied by addition of different amounts of energy. More energy added results in shorter fibers and less energy added results in longer fibers, when the rest of the process is the same.
  • the temperature needed for decomposition of fibers is in one embodiment achieved by adding pressure in the form of e.g. saturated steam.
  • the added steam may then have a pressure of 5 to 11 bar.
  • the binder may be a glue selected from the group comprising urea-formaldehyde (UF), and melamine-urea-formaldehyde (MUF).
  • UF urea-formaldehyde
  • UMF melamine-urea-formaldehyde
  • Other glues may also be used, but then the temperature and pressure has 1o be adapted to the curing temperature of said other glue.
  • ' t he fibers are then formed into a mat and compressed to dcsiied density, such as from 300 to 750 kg/m and thickness of below 3 mm, such as between 1 and 3 mm.
  • the compression may be performed in a continuous double band press, well known to a person skilled in the art, under continuous addition of hot steam.
  • the steam is supplied at 1 to 6 bar. whereby the mat may be heated all through to 100 to 150 0 C and push out all air comprised in the mat.
  • the compression resistance of the mat is hereby reduced significantly. This results in a solid but flexible, fiber product with homogeneous density profile.
  • the fiber product may be rolled into a loll.
  • the fiber product may then be cut along the length of the fiber product into narrow bands or strips. Thereafter the bands may be rolled into a roll. This provides easy storage and handling.
  • the density of the fiber product after compression is homogenously 500 to 600 kg/m 3 , such as 550 kg/m 3 .
  • the density of the fiber product after compression is homogenously 500 to 600 kg/m 3
  • the strength and flexibility are such that the product conveniently may be rolled into rolls, and provide reinforcing properties to the fiber product.
  • the mat that is formed from fiber and binder may have a density between 30 and 50 kg/m 3 and a surface weight corresponding to the desired thickness and density of the fiber product after compression.
  • the transporter is continuously feeding the mat in a continuously working double band press where the mat is compressed and hot steam is injected into the mat.
  • the injection may be performed through both bands of the press, since these bands typically comprise perforated steel belts with wire, which allow passage of steam.
  • the distance between the bands is set to a value slightly higher than the desired thickness of the fiber product produced.
  • the temperature of the steam is set so that a temperature of the mat of between 100 and 150°C is achieved.
  • Most fiber products according to the state of the art are made in presses where the rollers are made of metal. The heating in these kinds of presses are achieved through conductivity, which heats the surface area more than the middle area.
  • the injection gives a quick heating of the mat and makes the mat stay in the compressed state, which provides a homogeneous density across the thickness of the fiber product.
  • a homogenous density makes the fiber product flexible.
  • the flexible fiber product has a substantially homogeneous density profile, i.e. substantially the same density across the thickness of the product.
  • the fiber product may be cut into strips before rolling.
  • the flexible fiber product may be cut by a scissors method, well known to a person skilled in the art.
  • a distance material 105 is applied onto the first strip 104 and in between the at least two laths 101, 102.
  • the distance material 105 may for example be a honeycomb material, such as a cellulose honeycomb material.
  • a second strip 106 of a fiber material may then be applied and/or adhered, by for example glue, to the distance material 105.
  • the strip 106 may be arranged in parallel or perpendicular to the longitudinal extension of the laths 101, 102, and the first strip 104.
  • a second board 107 may be applied and adhered to the laths 101, 102, the distance material 105, and the second strip 106.
  • the second strip 106 may preferably be made of the flexible fiber material according to above.
  • Fig. 1 provides the advantage that the surfaces of said first and second boards, being located on a part of the first and second board having a strip beneath, will be reinforced for receiving mounting means, such as screw members, armature, fittings, frames, etc., there at.
  • Fig. 2 illustrates a perspective view of an article 200 according to another embodiment of the present invention.
  • the article 200 is manufactured by arranging at least two laths 201, 202 on a first sheet of fiber material 203.
  • the first fiber material 203 may be a flexible fiber material according to above, or a fiber board, such as a HDF or MDF board.
  • the laths 201, 202 are preferably arranged parallel to each other, extending longitudinally along two opposite sides/edges of the first sheet of fiber material 203. board 103.
  • additional laths, such as a lath 204 may be arranged in parallel with the two laths 201, 202 on said first sheet of fiber material 203.
  • the laths may be adhered to the first fiber material 203 by gluing, or other suitable adhering method or means.
  • a distance material 205 is applied onto the first sheet of fiber material 203 and in between the at least two laths 201, 202.
  • the distance material 205 may for example be a honeycomb material, such as a cellulose honeycomb material, as disclosed above.
  • a second sheet of fiber material 206 may be applied and adhered to the laths 201 , 202, and the distance material 205.
  • the second fiber material 206 may be a flexible fiber material according to above, or a fiber board, such as a HDF or MDF board.
  • the obtained product is then sawn across the laths, i.e. sawn transversally of the longitudinal direction of the laths 201. 202.
  • a number of elongated pieces with rectangular cross-section and parts of laths 201 , 202 distributed therein, in between distance material 205, are then obtained.
  • the article 200 is manufactured by arranging at least two such elongated pieces on a first board 207, such as a fiber board, such as a HDF or MDF board.
  • the elongated pieces may be arranged with the first or second fiber material 203, 206 bearing against the first board 207.
  • the elongated pieces are preferably arranged parallel to each other, extending longitudinally along two opposite sides/edges of the first board 207.
  • additional elongated pieces may be arranged in parallel with the two elongated pieces on said first board 207.
  • the elongated pieces may be adhered to the first board 207 by gluing, or other suitable adhering method or means.
  • a distance material 208 is applied onto the first board 207 and in between the at least two elongated pieces.
  • the distance material 208 may for example be a honeycomb material, such as a cellulose honeycomb material.
  • a second board 209 may be applied and adhered to the elongated pieces, and the distance material 208.
  • the embodiment according to Fig.2 may be combined with applying strips of a fiber material onto the first and second sheet of fiber materials 203, 206 or first and second boards 207, 209, according to the description in accordance with the embodiment of Fig. 1.
  • the embodiment of Fig. 2 thus provides the advantage that the surfaces of said first and second boards, being located on a part of the first and second board having a strip or a sheet of fiber material beneath, will be reinforced for receiving mounting means, such as screw members, armature, fittings, frames, etc., there at.
  • Fig. 3 illustrates a perspective view of an article 300 according to another embodiment of the present invention.
  • the article 300 is manufactured by arranging a distance material 301 onto the first sheet of fiber material 302
  • the first fiber material 302 may be a flexible fiber material according to above, or a fiber board, such as a ITDF or MDF board.
  • the distance material 301 may for example be a honeycomb material, such as a cellulose honeycomb material, as disclosed above.
  • a second sheet of fiber material 303 may be applied and adhered to the distance material 301.
  • the second fiber material 303 may be a flexible fiber material according to above, or a fiber board, such as a ITDF or MDF board.
  • the obtained product is then sawn across the length thereof, i.e. sawn transversally of the longitudinal direction of the first and second sheets of fiber material 302, 303.
  • a number of elongated pieces with rectangular cross-section, having distance material 301 in between the sheets of fiber material 302, 303, arc then obtained.
  • the article 300 is manufactured by arranging at least two such elongated pieces on a first board 304, such as a fiber board, such as a HDF or MDF board. 1 he elongated pieces may be arranged with the first or second fiber material 302, 303 bearing against the first board 304.
  • the elongated pieces are preferably arranged parallel to each other, extending longitudinally along two opposite sides/edges of the first board 304.
  • additional elongated pieces may be arranged in parallel with the two elongated pieces on said first board 304.
  • the elongated pieces may be adhered to the first board 304 by gluing, or other suitable adhering method or means.
  • a distance material 305 is applied onto the first board 304 and in between the at least two elongated pieces.
  • the distance material 305 may for example be a honeycomb material, such as a cellulose honeycomb material.
  • a second board 306 may be applied and adhered to the elongated pieces, and the distance material 305.
  • the embodiment according to Fig.3 may be combined with applying strips of a fiber material onto the first and second sheets of fiber material 302, 303 or first and second boards 304, 306, according to the description in accordance with the embodiment of Fig. 1.
  • the elongated piece according to the embodiment of Fig. 2 may be combined with elongated piece of Fig. 3.
  • an elongated piece according to the embodiment of Fig. 2 may be arranged to extend longitudinally along one side/edge of the first board 304, while an elongated piece according to the embodiment of Fig. 3 is arranged parallel to the elongated piece according to the embodiment of Fig. 2 to extend longitudinally along the opposite side/edge of the first board 304.
  • the embodiment of Fig. 3 thus provides the advantage that the surfaces of said first and second boards, being located on a part of the first and second board having a strip or a sheet of fiber material beneath, will be reinforced for receiving mounting means, such as screw members, armature, fittings, frames, etc., there at.
  • mounting means such as screw members, armature, fittings, frames, etc.
  • the type and form of distance material may be varied to compensate for differences in height in the article, due to sheets of fiber material and fiber boards only being present in some part or parts of the article.
  • distance materials applied in separate steps may have different heights. Many different types of materials can be used in the application of the above- mentioned boards.
  • the boards may consist of laminate, particle board, veneer, plywood, caidboard, plastic, metal etc
  • the laths may consist of solid wood, particle board or any other suitable material to which fittings or holders may be attached.
  • a honeycomb of cardboard is used as spacing element because of the low price and excellent properties of cardboard, but the honeycomb structures may also be made of e.g. plastic.
  • a suitable foam plastic material e.g. polyurethane. may be disposed in the space between the laths or elongated pieces.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
EP09771563.5A 2008-12-19 2009-12-16 Verfahren zur herstellung von baueinheiten für möbel Active EP2367989B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0802621 2008-12-19
PCT/EP2009/067282 WO2010069994A2 (en) 2008-12-19 2009-12-16 Building units for furniture, and method for manufacturing of such building units

Publications (2)

Publication Number Publication Date
EP2367989A2 true EP2367989A2 (de) 2011-09-28
EP2367989B1 EP2367989B1 (de) 2018-04-25

Family

ID=42269155

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09771563.5A Active EP2367989B1 (de) 2008-12-19 2009-12-16 Verfahren zur herstellung von baueinheiten für möbel

Country Status (3)

Country Link
EP (1) EP2367989B1 (de)
CN (1) CN102257223B (de)
WO (1) WO2010069994A2 (de)

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WO2019219521A1 (en) * 2018-05-15 2019-11-21 Ikea Supply Ag Method for manufacturing a furniture part

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US20120040131A1 (en) 2010-08-10 2012-02-16 Speer Dwaine D Composite Panel Having Perforated Foam Core
EP2627503B1 (de) 2010-10-13 2014-06-25 IKEA Supply AG Verfahren zur kontinuierlichen herstellung eines hohlplattenverbundmaterials sowie maschine und computerprogramm
US11059259B2 (en) 2016-11-21 2021-07-13 Wabash National, L.P. Composite core with reinforced plastic strips and method thereof
US11872792B2 (en) 2017-01-30 2024-01-16 Wabash National, L.P. Composite core with reinforced areas and method
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US11008051B2 (en) 2018-02-06 2021-05-18 Wabash National, L.P. Interlocking composite core and method
SE1851615A1 (en) * 2018-11-09 2020-05-10 Ikea Supply Ag Room divider system
CN113167069A (zh) * 2018-11-09 2021-07-23 宜家供应有限公司 房间分隔件面板
SE543314C2 (en) * 2018-12-18 2020-11-24 Ikea Supply Ag A method for producing a furniture board product
US11772715B2 (en) 2019-03-27 2023-10-03 Wabash National, L.P. Composite panel with connecting strip and method
SE544133C2 (en) * 2019-12-17 2022-01-11 Ikea Supply Ag Metal reinforced hollow board, a furniture comprising said hollow board and a method for manufacturing said hollow board

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Also Published As

Publication number Publication date
WO2010069994A2 (en) 2010-06-24
EP2367989B1 (de) 2018-04-25
WO2010069994A3 (en) 2011-06-30
CN102257223B (zh) 2013-10-30
CN102257223A (zh) 2011-11-23

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