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WO2018163226A1 - Panneau composite pour éléments d'ameublement - Google Patents

Panneau composite pour éléments d'ameublement Download PDF

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Publication number
WO2018163226A1
WO2018163226A1 PCT/IT2018/050037 IT2018050037W WO2018163226A1 WO 2018163226 A1 WO2018163226 A1 WO 2018163226A1 IT 2018050037 W IT2018050037 W IT 2018050037W WO 2018163226 A1 WO2018163226 A1 WO 2018163226A1
Authority
WO
WIPO (PCT)
Prior art keywords
layers
lightening
composite panel
structural layer
layer
Prior art date
Application number
PCT/IT2018/050037
Other languages
English (en)
Inventor
Alessio FURLAN
Renato TURCHETTO
Original Assignee
Plave S.P.A.
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 Plave S.P.A. filed Critical Plave S.P.A.
Publication of WO2018163226A1 publication Critical patent/WO2018163226A1/fr

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    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/72—Density
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2479/00—Furniture

Definitions

  • the present invention concerns a composite panel used for the manufacture of furnishing articles, such as doors, panels, parts of furniture, shelves or suchlike.
  • the invention concerns a composite panel in which the succession of superimposed layers of different structure guarantees excellent properties of lightness and strength, such as to make it suitable for the production of various furnishing components.
  • WO-A-90/04515 describes a method for the production of structural elements, in particular furnishing components, such as table legs and table frames, in which a semi-finished product is obtained by positioning slats of wood or chipboard parallel to each other, on a flat surface of a first panel previously coated with glue. The spaces between the slats are filled with cardboard, plastic or suchlike having a honeycomb conformation, or alternatively with plastic foams. Subsequently, a second panel, provided with glue on one of its surfaces, is positioned on the slats and the filling material, and the semi-finished product thus produced is subjected to pressure and glued together.
  • the semi-finished product thus obtained is then possibly cut along the slats to obtain a certain number of pieces with an elongated shape and a rectangular cross-section.
  • This solution requires a prior knowledge of the final destination of the semi-finished product, or of its use, in order to allow the correct positioning of the slats. This therefore makes the semi-finished product suitable for use only for particular specific applications.
  • panels of wood material panels of chipboard or medium-density fiberboard (MDF) are also known, which are particularly convenient from an economic point of view.
  • MDF medium-density fiberboard
  • chipboard material we mean panels of wood-fiber consisting of chips resulting from the waste of normal woodworking: the chips are mixed with binder materials and then pressed to produce chipboard.
  • MDF medium density fiberboard
  • chipboard or MDF panels described above can also constitute individual layers inside panels comprising several superimposed layers of different structure and composition.
  • the so-called hollow core panels widely used in the furniture sector, comprise two external layers of wood material (chipboard or MDF) distanced from each other by an intermediate layer of lighter material, with the function of lightening the overall structure of the panel.
  • chipsboard or MDF wood material
  • lighter material an intermediate layer of lighter material
  • the external layers based on wood material are generally covering elements and are attached, generally by gluing, on a frame also made of solid wood, chipboard or MDF.
  • the frame is formed by a series of perimeter strips and internal strips, it can also be made in a single piece and empty lightening sectors are created between the perimeter and internal strips.
  • a filling material can be added in the empty sectors of the frame, for example, impregnated paper structured in honeycombs.
  • the hollow core panel is therefore also referred to as a honeycomb panel.
  • the paper where required, is replaced with panels of expanded polyurethane or polystyrene or plastic honeycomb or aluminum honeycomb.
  • the hollow core panel is frequently used to make doors and panels for wardrobes that would be too heavy if made, for example, of chipboard or MDF.
  • Other applications in the furniture sector are shelves, living room shelves and in general any application that requires lightness, non-deformability and robustness.
  • Another disadvantage of all conventional panels comprising lightening sectors is connected to the fact that the smaller size panels obtained after cutting the starting panel must be subjected to edging operations, and if the cut is made in correspondence with the honeycomb lightening sector, it is difficult to cover the edges of the panel obtained due to the poor consistency of the material in correspondence with the edges: in fact, the application of the covering (for example laminates, polymer sheets) involves the use of high pressures, so that the material in correspondence with the edge could yield.
  • the covering for example laminates, polymer sheets
  • a first purpose of the present invention is therefore to make available to persons of skill a panel for furnishing elements having a particular structure, such that it can be cut without inconvenience in its longitudinal and/or transverse direction in order to create panels of smaller sizes according to the needs of use.
  • Another purpose of the present invention is to provide a panel with a particular structure, such as to allow and facilitate the operations of covering the edges (edging) of smaller panels, obtained by cutting the starting panel into several portions.
  • Another purpose of the invention is to provide a panel with a particular structure in which the operations of assembling the original panel and attaching it to a wall are facilitated, as well as the smaller panels which are obtained from the original panel by cutting.
  • the Applicant has devised, tested and embodied the present invention to overcome the shortcomings of the state of the art and to obtain these and other purposes and advantages.
  • the invention describes a composite panel to make furnishing elements comprising:
  • the structural layer based on wood material is interposed between two of the lightening layers. Moreover, each of the external covering layers is superimposed over one of the lightening layers and defines a respective flat external surface of the panel.
  • the composite panel according to the invention has a particular structure with superimposed layers, in which every structural layer (wood material) of the composite panel is interposed between a lower lightening layer and an upper lightening layer.
  • the presence in an intermediate position inside the composite panel of one or more structural layers based on wood material guarantees strength and, in general, good mechanical properties of the composite panel according to the present invention.
  • the presence of two lightening layers above and below each structural layer guarantees a lightening of the overall structure, so that the composite panel can also be used to make furnishing components with a certain thickness but not too heavy.
  • the cutting operations can be carried out in its longitudinal and/or transverse direction without particular disadvantages, thanks to the support and mechanical resistance given by the at least one intermediate structural layer based on wood material.
  • the smaller panels obtained by cutting the starting panel can have their edges covered (edging) without disadvantages.
  • the edge covers not only anchor themselves on the thickness of the external covering layers but can also anchor themselves on the thickness of the structural layer, preventing it from bulging toward the inside of the lightening layers themselves.
  • the lightening layers of the panel in the specific case where the composite panel is intended to obtain furnishing elements with particular mechanical resistance, can be made more resistant and structurally more solid by disposing, for example in a longitudinal and/or transverse direction of the panel, a sequence of reinforcement inserts at a predetermined distance.
  • - fig. 1 is a perspective view of a sequence of five layers suitable to be glued and subjected to pressing in order to obtain the composite panel according to the present invention
  • - fig. 2 is a perspective view of a portion of the composite panel according to the invention after gluing and pressing of the five layers in fig. 1 ;
  • - fig. 3 is a sequence of five layers suitable to be glued and subjected to pressing in order to obtain a variant embodiment of the present invention, according to which both the lightening layers of the composite panel are equipped with reinforcement inserts in their longitudinal and/or transverse direction;
  • - fig. 4 is a perspective view of a portion of the composite panel after gluing and pressing of the five layers in fig. 1 ;
  • FIG. 5 is a schematic perspective view of a possible application of the composite panel according to the present invention.
  • Fig. 1 shows a perspective view of a possible embodiment of the present invention in which a sequence of five layers are suitable to be glued and subjected to pressing in order to obtain the composite panel 10 according to the present invention.
  • a structural layer 11 is shown, based on a wood material disposed in an intermediate position between two lightening layers, upper 12a and lower 12b.
  • the drawings show a panel with a single structural layer 11 interposed between two lightening layers 12a, 12b, it is not excluded that in possible embodiments, not shown, the number of structural layers 1 1 is higher than one, for example two or three, and that each of said structural layers 11 is interposed between two lightening layers.
  • the panel 10 comprises two structural layers 1 1, it can be provided that one lightening layer is interposed between the two structural layers, and that additional lightening layers are superimposed on each of the latter.
  • the lightening layers 12a, 12b are provided inside with a sequence of empty spaces 13 and a sequence of filling elements 14.
  • the filling elements 14 can delimit said sequence of empty spaces 13.
  • the empty spaces 13 can be defined by a plurality of cells having the same shape or size, or different from each other, with the function of lightening the lightening layer 12a, 12b.
  • the at least one structural layer 1 1 is made of a wood material selected from solid wood, chipboard, medium density fiber (MDF), plywood.
  • MDF medium density fiber
  • the lightening layers 12a, 12b have the function of lightening the structure of the composite panel 10, thanks to the presence of the empty spaces 13.
  • the lightening layers 12a, 12b preferably comprise filling elements 14 with a honeycomb structure (fig. 5).
  • the honeycomb structure is defined by a plurality of flat surfaces 18, defining the filling elements 14, connected to each other to define a plurality of cells, defining the empty spaces 13, having polygonal cross section shapes.
  • the flat surfaces 18 are disposed, during use, substantially orthogonal to the flat development of the external covering layers 15, 16 and of the structural layer 1 1. This disposition of the flat surfaces 18 gives the composite panel 10 an adequate resistance even to compression stresses. This prevents, for example, any collapse of the composite panel 10 when orthogonal forces are applied to the flat surface of the composite panel 10, for example due to the anchoring action of threaded elements, or other.
  • the filling elements 14 generally consist of a material with a lower density than at least the structural layer 11 and the lightening layers 12a, 12b.
  • the lightening layers 12a, 12b can be made of a material selected preferably from paper and cardboard.
  • the lightening layers 12a, 12b are made of panels of expanded polyurethane, polypropylene or polystyrene, or provided with a cellular structure.
  • the lightening layers 12a, 12b are made of plastic, or aluminum, provided with a plurality of open cells.
  • Fig. 1 also shows the provision of an upper covering layer 15 above the lightening layer 12a and the provision of a lower covering layer 16 below the lightening layer 12b.
  • each of the external covering layers 15, 16 is superimposed on one of the lightening layers 12a, 12b and defines a respective flat external surface 19 of the composite panel 10.
  • the structural layer 1 1, the lightening layers 12a, 12b, and the external covering layers 15, 16 have a flat shape and substantially have the same surface sizes, so as to allow their reciprocal superimposition. In this way it is possible to obtain a composite panel 10 with a mainly flat shape, that is, in which its thickness is much smaller than the surface development sizes.
  • the sizes of the panel width and surface length are at least 20 times greater than the thickness of the panel itself.
  • the structural layer, the lightening layers, and the external covering layers are glued together, one superimposed over the other.
  • the lightening layers 12a, 12b have a lower density than that of the external covering layers 15, 16 and of the structural layer 11.
  • the lightening layers 12a, 12b have a density lower by at least about 0.5 times, preferably lower than at least about 0.8 times, than the density of the external covering layers 15, 16 and the structural layer 1 1.
  • the external covering layers 15, 16 and the structural layer 11 have substantially the same structural mechanical properties.
  • the external covering layers 15, 16 and the structural layer 1 1 have a thickness S comprised between 2mm and 8mm, preferably between 4mm and 6mm. These values of thickness allow both the external covering layers 15, 16 and the structural layer 1 1 to have sufficient structural resistance to anchor the attachment elements.
  • the lightening layers 12a, 12b have a thickness H comprised between 1 and 5, preferably between 1 and 3 times the thickness S of the external covering layers 15, 16 or of the structural layer 1 1. This condition allows to obtain a composite panel with a great thickness but with a limited overall weight.
  • the external covering layers 15, 16 are made of the same material with which the structural layers 1 1 are made.
  • the external covering layers 15, 16 are generally made of a wood material selected from solid wood, chipboard, medium density fiber (MDF) or plywood. Furthermore, depending on the final use of the composite panel 10 according to the present invention, it is advisable to cover the external surfaces of the covering layers 15, 16 to make them appreciated from the aesthetic point of view.
  • MDF medium density fiber
  • the enhancing layer can have a thickness of less than 1.5mm.
  • the surfaces of the covering layers 15, 16 can be enhanced by coatings provided with decorative elements (not shown in Fig. 1).
  • the coatings, or enhancing layers can be made of veneer, cellulose material impregnated with resins in laminated and/or painted form.
  • films with a base of thermoplastic polymers selected from polypropylene (PP), polyvinyl chloride (PVC), polyethylene terephthalate (PET) and acrylonitrile-butadiene-styrene (ABS).
  • Fig. 2 is a perspective view of a portion of the composite panel 10 according to the invention after gluing and pressing the five superimposed layers indicated in fig. 1.
  • the cross sections of the following layers are shown in sequence: covering layer 15, upper lightening layer 12a, structural layer 11 based on wood material, lower lightening layer 12b and covering layer 16.
  • the composite panel 10 can consist of the structural layer 1 1, the two lightening layers 12a, 12b between which the structural layer 11 is interposed and put in contact, and the two external covering layers 15, 16, each of which is superimposed over and in contact with one of the two lightening layers 12a, 12b.
  • the structural layer 11 consisting of wood material is in an intermediate position inside the composite panel 10 to guarantee maximum support for the overall structure of the panel 10, in case it is subjected to cutting operations to cut it into smaller panels and consequent edging of the panels obtained.
  • the composite panel 10 according to the present invention is subjected to assembly operations: the screws, hinges and other pieces of hardware can be suitably applied both to the structural layer 11 and to one of the external layers 15 or 16, which are both made of wood material, able to resist the mechanical stresses induced.
  • fig. 5 describes a possible application of the present invention to a furnishing element 20 which comprises a composite panel 10 in accordance with the present invention, a hardware component 21 positioned resting on the external covering layer 15 and an attachment element 22 configured to attach the hardware component 21 to the external covering layer 15 and to anchor itself at least to the structural layer 1 1.
  • the hardware component 21 can comprise a plate, a hinge, a bracket or possible combinations thereof.
  • the attachment element 22 can comprise, by way of example only, a screw, a pin, a plug or similar or comparable elements.
  • the attachment element 22 and the hardware component 21 can be made in a single body.
  • Fig. 3 is a sequence of five layers suitable to be glued and subjected to pressing in order to obtain a variant embodiment of the present invention.
  • fig. 3 shows a structural layer 11 based on wood material disposed in an intermediate position between two lightening layers, upper 12a and lower 12b.
  • the lightening layers 12a, 12b comprise inside them a sequence of empty spaces 13 and a sequence of filling elements 14.
  • the lightening layers 12a, 12b have the function of lightening the structure of the composite panel 10, thanks to the presence of the empty spaces 13. Furthermore, the lightening layers 12a, 12b comprise filling elements 14 having an honeycomb structure (not shown in fig. 3), and consisting of a material preferably selected from paper, cardboard, panels of expanded polyurethane or polystyrene, plastic or aluminum.
  • the variant of fig. 3 shows how the lightening layers 12a, 12b can be provided with a sequence of reinforcement inserts 17 inside them.
  • reinforcement inserts 17a are shown to be disposed along the longitudinal axis of the panel at a predetermined distance from each other.
  • reinforcement inserts 17b are shown to be disposed along the transverse axis of the panel at a predetermined distance from each other.
  • the reinforcement inserts 17a, 17b are shown to be disposed along the longitudinal and transverse axis of the composite panel 10 according to the invention.
  • the reinforcement inserts 17a, 17b are oblong elements, that is, they develop in a prevailing direction.
  • the reinforcement inserts 17a, 17b are preferably made of a material selected from chipboard, medium density fiber (MDF), plywood or aluminum.
  • Fig. 3 also shows the provision of an upper covering layer 15 above the lightening layer 12a and the provision of a lower covering layer 16 below the lightening layer 12b.
  • Fig. 4 is a perspective view of a portion of the composite panel 10 according to the invention after gluing and pressing the five superimposed layers indicated in fig. 3. Starting from top to bottom, the transverse surfaces of the following layers are shown in sequence: covering layer 15, upper lightening layer 12a, structural layer 11 based on wood material, lower lightening layer 12a and covering layer 15. It should be noted that both the lightening layers 12a, 12b are equipped with reinforcement inserts 17 which extend along the longitudinal direction of the panel 10.
  • the structural layer 1 1 consisting of wood material occupies the intermediate position inside the composite panel 10 to guarantee maximum support for the overall structure of the panel, in case it is subjected to cutting operations to cut it into panels of a smaller size and consequent edging of the panels obtained.
  • another aspect of the present invention is a method to produce a composite panel 10 for furnishing elements comprising the following steps:
  • a sequence of reinforcement inserts 17a, 17b can be provided inside one or both the lightening layers 12a, 12b, before subjecting them to the gluing and pressing step with the remaining layers of the composite panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

Panneau composite pour la production d'articles d'ameublement, tels que des portes, des panneaux, des parties de meubles, des étagères ou similaires. En particulier, l'invention concerne un panneau composite comprenant une séquence de couches superposées, définies par des couches structurales à base de matériau dérivé du bois et de couches d'allègement.
PCT/IT2018/050037 2017-03-08 2018-03-08 Panneau composite pour éléments d'ameublement WO2018163226A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000025910A IT201700025910A1 (it) 2017-03-08 2017-03-08 Pannello composito per elementi di arredo
IT102017000025910 2017-03-08

Publications (1)

Publication Number Publication Date
WO2018163226A1 true WO2018163226A1 (fr) 2018-09-13

Family

ID=59521418

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2018/050037 WO2018163226A1 (fr) 2017-03-08 2018-03-08 Panneau composite pour éléments d'ameublement

Country Status (2)

Country Link
IT (1) IT201700025910A1 (fr)
WO (1) WO2018163226A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900000763A1 (it) * 2019-01-18 2020-07-18 3B Lab S R L Pannello sandwich strutturale in legno massello stabilizzato per ante, elementi di arredo in genere e elementi per costruzioni prefabbricate
IT202300007482A1 (it) * 2023-04-18 2024-10-18 Olivieri S R L Pannello tamburato e relativo metodo di realizzazione

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990004515A1 (fr) * 1988-10-20 1990-05-03 Möbelknaggen Ab Procede de fabrication d'elements structuraux et en particulier de composants de meubles

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990004515A1 (fr) * 1988-10-20 1990-05-03 Möbelknaggen Ab Procede de fabrication d'elements structuraux et en particulier de composants de meubles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900000763A1 (it) * 2019-01-18 2020-07-18 3B Lab S R L Pannello sandwich strutturale in legno massello stabilizzato per ante, elementi di arredo in genere e elementi per costruzioni prefabbricate
IT202300007482A1 (it) * 2023-04-18 2024-10-18 Olivieri S R L Pannello tamburato e relativo metodo di realizzazione

Also Published As

Publication number Publication date
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