EP2167770B1 - Structure de cadre et son procédé de fabrication - Google Patents

Structure de cadre et son procédé de fabrication Download PDF

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Publication number
EP2167770B1
EP2167770B1 EP07722613.2A EP07722613A EP2167770B1 EP 2167770 B1 EP2167770 B1 EP 2167770B1 EP 07722613 A EP07722613 A EP 07722613A EP 2167770 B1 EP2167770 B1 EP 2167770B1
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EP
European Patent Office
Prior art keywords
core member
core
frame structure
structure according
wood
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EP07722613.2A
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German (de)
English (en)
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EP2167770A1 (fr
Inventor
Henrik Danielsen
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VKR Holding AS
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VKR Holding AS
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Priority to PL07722613T priority Critical patent/PL2167770T3/pl
Publication of EP2167770A1 publication Critical patent/EP2167770A1/fr
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/20—Constructions depending on the use of specified materials of plastics
    • E06B3/205—Constructions depending on the use of specified materials of plastics moulded or extruded around a core
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/04—Frames for doors, windows, or the like to be fixed in openings
    • E06B1/06—Wooden frames
    • E06B1/08—Wooden frames composed of several parts with respect to the cross-section of the frame itself
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/04—Wing frames not characterised by the manner of movement
    • E06B3/06—Single frames
    • E06B3/08—Constructions depending on the use of specified materials
    • E06B3/10—Constructions depending on the use of specified materials of wood

Definitions

  • the present invention relates to a frame structure, such as a window sash or a frame for a window or door, including side, top and bottom pieces, said frame structure comprising all the features of the preamble of claim 1.
  • plastic windows have some drawbacks that prevent wide use thereof. Initially, the raw material and the tools utilized for providing the plastic covering are relatively expensive. As it is furthermore difficult to provide a plastic material fulfilling all of the strength and insulating requirements set to such frame structures, reinforcing and/or insulating material such as wood must be used.
  • Applicant's patent EP-B1-0 251 804 discloses a frame structure of the kind mentioned in the introduction.
  • the frame structure is in the form of a window structure, for instance a window frame or sash.
  • the plastic covering of the frame structure disclosed in this document is obtained by encapsulating the core at least partly by moulding a layer of for instance polyurethane on the core.
  • the core may be made of wood or wood-based material, such as pine, chipboard or plywood.
  • a frame structure of the kind mentioned in the introduction is known from EP 1 496 189 A2 .
  • a wooden core including at least one treated wooden core member is encased in a plastic covering
  • the core is completely surrounded by the plastic covering, which although being a thorough solution leaves room for improvement as regards costs.
  • EP0251804 A1 discloses a frame-shaped window member including a framed core made from wood material and provided with a covering moulded thereon, and supporting on its side facing the open air a weather-resisting shield, the part of the covering facing the inside air has a far larger thickness and thus a corresponding minor permeability to vapour than the adjacent covering parts which fully or partly cover the remainder of the surface of the core.
  • the shielding arrangement is an external shielding arrangement including coverings, claddings and/or flashings connected to the pieces of the frame structure.
  • Treated wood has been found to possess a large number of properties equal to or better than those of ordinary wood which has not been subjected to treatment within the context of the present invention, i.e. for instance only traditional seasoning.
  • treated wood which is traditionally a relatively expensive and high-class material as a core member in such constructions.
  • the overall lifetime price of the resulting frame structure is surprisingly not significantly raised when using treated wood. This is, i.a., due the superior properties of treated wood, so that the risk of exchange of parts is very low.
  • the configuration of such a second shield may be optimized with respect to the need for protection depending on the particular exposure to the weathering.
  • the core includes a plurality of core pieces, each said core piece including at least one core member of treated wood.
  • said plurality of core pieces totals four core pieces corresponding to the side, top and bottom pieces of the frame structure.
  • At least one of said core pieces includes a plurality of core members.
  • Each core piece may have its individual configuration of core members in dependence of the need for strength, weatherproofing properties and/or aesthetical appearance.
  • each individual core piece may vary.
  • a first core member and a second core member of said core piece may be connected with each other at a first set of mutually facing contact surfaces, said first or second core member being formed from treated wood.
  • the core piece may comprise a third core member connected with the first and/or the second core member at a second set of mutually facing contact surfaces.
  • the third core member is made from the same material as the first core member. This makes it possible to obtain similar properties and appearance on several faces of the frame structure.
  • the first core member of each core piece faces inwards with respect to the frame opening and the second core member is made of treated wood and faces outwards. This makes it possible to achieve a harmonized appearance on the side which is visible to the user in the mounted state of the frame structure, whereas the external or outwards facing sides most exposed to the weathering are duly protected by the inherent properties of the treated wood.
  • the plastic covering in cross section comprises two groups of each at least two parts provided on substantially opposite surfaces of said core member.
  • the plastic covering may cover parts of the surfaces of the wooden core member visible to a user in a mounted state of the frame structure.
  • the plastic covering provides protection and a smooth surface, which in addition to being aesthetically pleasing is advantageous from a practical point of view.
  • Such a plastic covering provides for a surface which is easy to clean and demands almost no maintenance in the form of e.g. painting, lacquering, oil treatment etc.
  • the parts uncovered by the plastic covering include surfaces substantially parallel to the roof in the mounted position. This makes it particularly easy and reliable to provide the second shield.
  • the parts uncovered by the plastic covering include surfaces substantially perpendicular to the roof in the mounted position.
  • the second shield may include a covering and/or a cladding. Furthermore, the second shield may include a flashing.
  • the thickness of the plastic material encasing the wooden core member is a balance of integrity of the resulting frame structure, material cost, insulation properties etc.
  • a suitable interval of the average thickness of the plastic material is 1 to 8 mm, preferably at least 2 mm and maximum 5 mm.
  • the plastic material is relatively expensive, and hence the thickness should be kept at a minimum, but practical problems relating to moulding of the plastic sets a lower value of about 1 mm.
  • the treatment selected for the core member or members provides a protection against fungus which will be sufficient for most applications of the frame structure, it is possible to subject the at least one wooden core member to a treatment with a fungicide.
  • Another aspect of the invention relates to a method for manufacturing a frame structure as defined in claim 13. This method can be performed with a limited degree of manual labour, thereby resulting in a relatively efficient and low cost method for manufacture when producing such frame structures in large numbers.
  • the core member may be shaped in any suitable way, such as by sawing, planing and milling or the like, however according to an embodiment the core member is machined in the appropriate shape by moulding, chamfer, or the like.
  • the resulting core member has an outline with a relatively smooth contour, which is advantageous with regard to moulding of the plastic around the core member, as the flow of plastic in the mould is facilitated.
  • Pre-treating of the surface of the core member to facilitate adherence may be accomplished in a number of ways, such as by etching the surface, applying a suitable primer or the like.
  • the step of pre-treating the surface of the core member is a step of roughening the surface, to provide a non-smooth surface having improved adherence characteristics.
  • the roughening entails an increase in the area of the contact surface between the core and the plastic covering.
  • Such roughening may also include e.g. a chamfering or grooving operation, in which the surface is provided with a number of grooves of identical or varying depth and width. This operation is carried out by an appropriate tool, such as a gouge or moulding iron, which may have e.g.
  • the advantageous effect may be due to facilitated wetting of the surface, so the plastic material will get in intimate contact with the surface during moulding, and hence form a strong bond between the core member and the plastic material.
  • the setting plastic material is polyurethane, which is a well-known material with suitable properties with regard to weatherproofness, insulation, mouldability etc.
  • the frame structure is a window frame having two side pieces 1 and 1a, a bottom piece 1b and a top piece 1c.
  • the structure of the individual pieces may vary within the general principle underlying the invention, i.e. that a core including a core member comprising treated wood is encased by a plastic covering.
  • a core including a core member comprising treated wood is encased by a plastic covering.
  • the side piece 1 comprises a core consisting of a core member 2 of treated wood encapsulated in a plastic covering in the form of a surface layer 3 of plastic material.
  • the surface layer 3 is formed of foamed polyurethane.
  • the wooden core is machined into shape by moulding or chamfer in long units, and can even make up an entire side piece of the window if considered advantageous.
  • the cross-section shown comprises recesses 4 and 5, which are not used at this position, but has a function elsewhere along the frame side piece.
  • the recess 6 is adapted for taking up a lining.
  • the single core member 2 is made of wood which has been heat-treated.
  • the growth rings of the heat-treated wood can be seen, and it is also seen that the heat-treated wood is relatively dark in colour.
  • Research work on heat treatment of wood has been performed e.g. in Finland for some years, and reference is made to the previously mentioned publication.
  • heat treatment processes are processes in which the physical properties of the wood are changed permanently, i.e. moisture content, but also strength, insulation property etc. Such changes are effected when wood is subject to temperatures above 150°C.
  • the heat-treated wood has been subjected to a temperature in the interval of 150-240°C for 0.5-4 hours.
  • the temperature may have been constant during this interval or vary within the limits of the speed of temperature adjustment of the kiln.
  • Other heat-treatments are of course conceivable as well, as long as they provide the properties aimed at.
  • the heat-treated wooden core member preferably has a density between 350 and 500 kg/m 3 .
  • the wood species of the heat-treated part of the core may be any species suitable to the purpose, examples being softwood species such as pine or spruce.
  • temperatures over 150°C alter the physical and chemical properties of wood permanently, for example the colour of the wood darkens, the shrinkage and swelling of the wood is reduced, and the equilibrium moisture content of the wood is improved. It is also found that the strength is reduced, but the insulation property is enhanced.
  • the heat treatment process is normally divided in a preheating period, an actual heat treatment period and a cooling period. During preheating and cooling the temperature gradient is controlled to avoid excessive splitting or cracking of the wood.
  • Heat treatment reduces and lowers water uptake, which is advantageous with regard to durability of the wood and resistance to deterioration. However, this effect also lowers the adherence of the plastic material during moulding, and hence it has till now been considered very difficult to encapsulate heat-treated wood in plastic.
  • a disadvantage of heat-treated wood is that the strength decrease by 10-30% in bending and pulling, and the wood becomes more brittle, but it is surprisingly found that the reduction in strength is not a problem in the frame structure according to the invention.
  • Figs 4 and 5 schematically show alternative embodiments of the frame structure according to the invention.
  • Fig. 4 shows a cross sectional view of a window frame side piece
  • Fig. 5 correspondingly shows a cross sectional view of a window sash side piece.
  • a plastic covering in the form of a surface layer 103, 203 of plastic material covers only part of the surfaces of a wooden core member 102, 202 seen in cross section.
  • the surface layer 103, 203 comprises two groups of each at least two parts provided on substantially opposite surfaces of said core member.
  • large binding forces are achieved between the surface layer 103, 203 and the core member 102, 202 because the plastic material adheres well to treated wood.
  • additional safety from separation of plastic from treated wood is achieved by this particular provision of surface layer parts.
  • the wooden core member or members may have been subjected by acetylation.
  • Acetylation in general, is a process that introduces an acetyl functional group into an organic compound. Mores specifically, the free hydroxyl groups of the wood are converted into acetyl groups, e.g. by making the wood react with acetic anhydride. In this manner, the hydroxyl groups, which are known to adsorb water from the surroundings and are furthermore believed to be the source of decay of the wood, are eliminated.
  • This has the advantage that the strength and adhesion properties of natural wood are maintained.
  • the negative aspects of untreated wood having natural water content are reduced, as the weathering does virtually not influence a core member treated by acetylation.
  • the wooden core may be treated by impregnation.
  • Impregnation is a well-known process and may be carried out in a variety of different steps.
  • One particularly efficient method is disclosed in WO 2003/095165 .
  • the above-mentioned treatments all provide a protection against the formation of fungus, which will be sufficient for most applications.
  • the wooden core member or members may further be subjected to a treatment with a fungicide. This eliminates completely or at least reduces to a very large extent the risk of fungus formation in the frame structure.
  • the first group comprises parts 103a - 103i, parts 103a - 103c being disposed on surfaces of the core member 102 facing a window sash of the window, and parts 103d, 103e being disposed on opposite surfaces of the core member, i.e. the surface of the core member, which in a mounted state of the window is facing a roof into which the window has been integrated.
  • the second group comprises parts 103f - 103i, parts 103f - 103h being disposed on surfaces of the core member 102 in a mounted state of the window facing the inside, i.e. a room of a building into which the window has been built, and part 103i being disposed on an opposite surface of the core member 103, i.e. the surface of the core member 103, which in a mounted state of the window is facing the outside.
  • the first group comprises parts 203a - 203c, part 203a being disposed on a surface of the core member 202 facing a windowpane of the window sash, and parts 203b, 203c being disposed on opposite surfaces of the core member 202, i.e. surfaces of the core member, which in a mounted state of the window are facing a window frame of the window, e.g. the window frame of Fig. 4 .
  • the second group comprises parts 203d - 203f, part 203d being disposed on a surface of the core member 202 in a mounted state of the window facing the inside, and parts 203e, 203f being disposed on opposite surfaces of the core member 203, i.e. the surfaces of the core member 203, which in a mounted state of the window are facing the outside.
  • the parts 103d, 103e are separate parts disposed on a mutual surface of the core member 102, thus forming a discontinuation of the surface layer 103 on the surface of the core member 102, which surface in a mounted state of the window is facing and hidden by the roof. Since this surface is hidden, it serves no aesthetic purpose to let the surface layer 103 cover this surface.
  • the surface layer 203 does not cover the surfaces of the core member 202 hidden, during normal use in a mounted state of the window, to a user inside the building. This saves plastic material, which is relatively costly in comparison with the material of the core. Moisture protection and weather resistance of naked treated wood is typically sufficient, even on surfaces of treated wood facing the outside and acting as a first shield against the weathering. Even other materials utilized as core members may have sufficient properties to face the outside.
  • one of basically three different types of sheath-like elements is used for providing a second shield in the shielding arrangement for waterproofing of the construction; a first type of elements known as flashings proof the meeting between the roofing and the window, a second type of elements known as claddings proof the frame and sash profiles themselves and a third type of elements known as coverings proof space between the sash claddings and the pane or glassing beads.
  • the outwards facing side 102a of the single core member 102 acts as a first shield
  • a covering (i.e. of the above-mentioned third type) 501 acts as a second shield.
  • the covering 501 extends substantially in parallel with the face 102 facing upwards and outwards in the mounted position of the frame structure and hence substantially in parallel with the roof surface in the mounted position.
  • the core of the side pieces, the top piece and/or the bottom piece comprises further core members of heat-treated wood, non-heat-treated wood or wood treated by any other method, or any other suitable material such as an insulating foamed material.
  • the strength requirements of the top and bottom pieces are typically lower such that these pieces may comprise core members with improved insulating properties, but poorer strength properties, such as an insulating foam material.
  • Such core members are preferably completely encased by more durable core members such as wooden core members.
  • core members visible from the inside of a building into which the frame structure has been built are preferably covered by a surface layer
  • core members only visible from the outside of the building can be manufactured from another material such as not encased heat-treated or otherwise treated hardwood to provide a compromise between appearance and costs.
  • Heat-treated hardwood has a lighter colour than heat-treated softwood.
  • the hardwood may be in the form of birch or European aspen.
  • Figs 6 to 9 show an embodiment, in which the pieces 301, 301a, 301b, 301c constituting the core of the frame comprises a number of core members manufactured from different materials.
  • the core may form the core of a frame structure of a window frame, but the principle is fully adaptable to other frame structures, such as a window sash or a frame of a door. It is even possible to let the core form a substantial part of the frame structure.
  • a first core member 302 and a second core member 303 of the side core piece 301 are connected with each other at a first set of mutually facing contact surfaces 311, the second core member 303 being formed from treated wood, such as for instance heat treated wood, acetylated wood or impregnated wood, having improved deterioration resistance properties than the first core member 302.
  • the material of the first core member 302 may be any material fulfilling the aesthetically and practically convenient demands.
  • the material may be lacquered pine.
  • the top core piece 301c comprises a third core member 304c connected with the first and second core members 302c, 303c at a second set of mutually facing contact surfaces 312c.
  • the third core member 304c is made from the same material as the first core member, viz. a wooden material in the embodiment shown.
  • the third core member 304c is connected with at least the second core member 303c, said second set of contact surfaces 312c extending substantially perpendicularly to said first set of contact surfaces 311c.
  • the bottom core piece 301b shown in Fig. 9 has substantially the same configuration as the side core piece 301, and comprises a first core member 302b and a second core member 303b.
  • the frame structure provides for a second shield of a shielding arrangement, the parts 303, 303c and 303b acting as a first shield.
  • the second shield is shown only in respect of the piece 301 shown in Fig. 7 but similar configurations are conceivable in connection with the frame pieces 301b and 301c.
  • the second shield thus includes a covering 501 corresponding to the covering in Fig. 4 .
  • the shield includes a cladding 502 having a first part substantially parallel with the upper and outwards facing side and a second part substantially perpendicular to the first part.
  • the second part of cladding 502 covers the outwards and sidewise facing part of core member 303 not covered by either another core member 302 or a plastic covering.
  • the shield includes a flashing 503 comprising a first part along the outwards and sidewise facing side of core member 303 and a second part substantially perpendicular to the first part and adapted to be positioned substantially in parallel with and below the roofing in the mounted position.
  • the first core member of each core piece faces inwards with respect to the frame opening.
  • other configurations are of course conceivable. It is, of course, conceivable to treat the surface or surfaces uncovered by the plastic covering by any suitable coating.
  • Fig. 10 a photo of a corner joint of the window frame can be seen.
  • One core 2 comprises three fingers 2a, 2b and 2c, engaged with four fingers 7a, 7b, 7c and 7d of another core.
  • the joint between fingers 7b, 2b and 7c is an interference fit, so this joint will be able to fix the mutual position of the two cores.
  • the joint between other fingers is a loose fit, so there is a gap into which the plastic coating material may flow and set to fix the joint, as can be seen at reference numeral 8.
  • finger joint should not be considered restricted to the embodiment with core member of treated wood, e.g. heat treated, acetylated or impregnated wood, as the advantages of the joint is evidently also present with core members of other materials, such as untreated wood, plywood etc.
  • core member of treated wood e.g. heat treated, acetylated or impregnated wood
  • FIGs 11 and 12 an embodiment of an assembled frame core 12 can be seen prior to moulding of the plastic coating around the members of the frame core 12.
  • the frame core 12 is assembled of straight pieces of treated wood having uniform cross-section along the length thereof.
  • auxiliary wedge parts 13 may be provided as can be seen to strengthen the joint and provide a smooth transition between the jointed members, if the core members differ in size.
  • the wedge parts 13 are not necessarily made of treated wood, but may be made of for example plywood.
  • FIGs 13 and 14 An embodiment of an assembled sash core 20 can be seen in Figs 13 and 14 .
  • the construction of the sash core 20 is a little more complicated and comprises additional plywood parts 21, 22 and 23 attached to the core parts of treated wood.
  • a prototype of the frame structure was made using a polyurethane foam of the integral type as the plastic material.
  • the polyurethane was foamed in the mould, and the density of the resulting layer of PUR depending on the free space available in the mould, as e.g. a void will result in a lower density. It will be evident to the skilled person that other types of plastic material could be used with good results.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wing Frames And Configurations (AREA)
  • Door And Window Frames Mounted To Openings (AREA)

Claims (15)

  1. Structure de cadre, telle qu'un châssis de fenêtre ou un cadre pour une fenêtre ou une porte, comportant des pièces latérales, supérieure et inférieure (1, 1a, 1b, 1c), ladite structure de cadre comprenant
    un coeur comportant au moins un élément de coeur en bois (2 ; 102 ; 202 ; 302, 303 ; 302c, 303c, 304c ; 302b, 303b) et un revêtement en plastique (3 ; 103 ; 203) entourant le coeur, et
    un agencement d'écrans de protection contre les intempéries (501, 502, 503) recouvrant au moins des parties de la structure de cadre, adapté pour être tourné vers l'extérieur dans une position montée de la structure de cadre,
    l'au moins un élément de coeur en bois (102 ; 202 ; 302, 303 ; 302c, 303c, 304c ; 302b, 303b) comportant au moins un élément (102 ; 202 ; 303 ; 303c ; 303b) en bois, qui a été soumis à un traitement choisi dans le groupe constitué par un traitement thermique, une acétylation et une imprégnation,
    dans laquelle le revêtement en plastique (103 ; 203) en coupe transversale recouvre uniquement une partie des surfaces de l'élément de coeur en bois,
    dans laquelle l'élément de coeur (102 ; 202 ; 303 ; 303c ; 303b) composé de bois traité constitue un premier écran dudit agencement d'écrans, et
    dans laquelle un deuxième écran (501, 502, 503) dudit agencement d'écrans recouvre au moins la partie des surfaces de l'élément de coeur en bois non recouverte par le revêtement en plastique,
    dans laquelle le coeur comporte une pluralité de pièces de coeur (301, 301a, 301b, 301c), chaque dite pièce de coeur comportant au moins un élément de coeur (102 ; 202 ; 303 ; 303c ; 303b) en bois traité,
    dans laquelle ladite pluralité de pièces de coeur (301, 301a, 301b, 301c) représente au total quatre pièces de coeur correspondant aux pièces latérales, supérieure et inférieure de la structure de cadre,
    dans laquelle au moins une desdites pièces de coeur (301, 301a, 301b, 301c) comporte une pluralité d'éléments de coeur (302, 303 ; 302c, 303c, 304c ; 302b, 303b),
    dans laquelle un premier élément de coeur (302 ; 302c ; 302b) et un deuxième élément de coeur (303 ; 303c ; 303b) de ladite pièce de coeur (301 ; 301c ; 301b) sont reliés l'un à l'autre au niveau d'un premier ensemble de surfaces de contact se faisant mutuellement face (311 ; 311c ; 311b), ledit premier ou deuxième élément de coeur (303 ; 303c ; 303b) étant formé à partir de bois traité,
    caractérisée en ce que
    le premier élément de coeur (302 ; 302c ; 302b) de chaque pièce de coeur (301 ; 301c ; 301b) est tourné vers l'intérieur par rapport à l'ouverture de cadre et le deuxième élément de coeur (303 ; 303c ; 303b) est composé de bois traité et est tourné vers l'extérieur, le deuxième élément de coeur constituant le premier écran dudit agencement d'écrans.
  2. Structure de cadre selon la revendication 1, dans laquelle ladite pièce de coeur (301c) comprend un troisième élément de coeur (304c) relié au premier et/ou au deuxième élément de coeur (303c) au niveau d'un deuxième ensemble de surfaces de contact se faisant mutuellement face (312c).
  3. Structure de cadre selon la revendication 2, dans laquelle ledit troisième élément de coeur (304c) est composé du même matériau que le premier élément de coeur (302c).
  4. Structure de cadre selon la revendication 2 ou 3, dans laquelle ledit troisième élément de coeur (304c) est relié au moins au deuxième élément de coeur (303c), ledit deuxième ensemble de surfaces de contact (312c) s'étendant de façon sensiblement perpendiculaire audit premier ensemble de surfaces de contact (311c).
  5. Structure de cadre selon la revendication 1, dans laquelle le revêtement en plastique (103 ; 203) en coupe transversale comprend deux groupes, chacun d'au moins deux parties disposées sur des surfaces sensiblement opposées dudit élément de coeur (102 ; 202).
  6. Structure de cadre selon l'une quelconque des revendications précédentes, dans laquelle le revêtement en plastique (103 ; 203) recouvre des parties des surfaces de l'élément de coeur en bois visibles d'un utilisateur dans un état monté de la structure de cadre.
  7. Structure de cadre selon la revendication 1, dans laquelle les parties non recouvertes par le revêtement en plastique (103) comportent des surfaces (102a) sensiblement parallèles au toit dans la position montée.
  8. Structure de cadre selon la revendication 1, dans laquelle les parties non recouvertes par le revêtement en plastique comportent des surfaces sensiblement perpendiculaires au toit dans la position montée.
  9. Structure de cadre selon la revendication 1, dans laquelle le deuxième écran comporte une couverture (501) et/ou un parement (502).
  10. Structure de cadre selon la revendication 1, dans laquelle le deuxième écran comporte un solin (503).
  11. Structure de cadre selon l'une quelconque des revendications précédentes, dans laquelle l'entourage en matériau plastique a une épaisseur dans l'intervalle de 1 à 8 mm, de préférence d'au moins 2 mm et au plus 5 mm.
  12. Structure de cadre selon l'une quelconque des revendications précédentes, dans laquelle ledit au moins un élément de coeur en bois a en outre été soumis à un traitement avec un fongicide.
  13. Procédé de fabrication d'une structure de cadre selon l'une quelconque des revendications 1 à 12 et comprenant les étapes consistant à :
    se procurer un coeur comportant au moins un élément de coeur en bois comportant au moins un élément en bois, qui a été soumis à un traitement choisi dans le groupe constitué par un traitement thermique, une acétylation et une imprégnation,
    se procurer un revêtement en plastique pour recouvrir en coupe transversale uniquement une partie des surfaces de l'élément de coeur en bois,
    prétraiter la surface de l'élément de coeur pour faciliter l'adhérence,
    assembler une pièce de coeur d'une pluralité d'éléments de coeur,
    placer un ensemble de pièces de coeur assemblées dans un moule,
    injecter un matériau plastique de prise dans le moule,
    retirer la structure de cadre finie du moule,
    se procurer un agencement d'écrans de protection contre les intempéries pour recouvrir au moins des parties de la structure de cadre, adapté pour être tourné vers l'extérieur dans une position montée de la structure de cadre, l'élément de coeur composé de bois traité constituant un premier écran dudit agencement d'écrans, et un deuxième écran dudit agencement d'écrans recouvrant au moins la partie des surfaces de l'élément de coeur en bois non recouverte par le revêtement en plastique.
  14. Procédé selon la revendication 13, dans lequel l'étape de prétraitement de la surface de l'élément de coeur est une étape consistant à rendre la surface rugueuse.
  15. Procédé selon la revendication 14, dans lequel le matériau plastique de prise est le polyuréthane.
EP07722613.2A 2007-05-18 2007-05-18 Structure de cadre et son procédé de fabrication Active EP2167770B1 (fr)

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PL07722613T PL2167770T3 (pl) 2007-05-18 2007-05-18 Konstrukcja ościeżnicowa i sposób wytwarzania takiej konstrukcji ościeżnicowej

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PCT/DK2007/000234 WO2008141642A1 (fr) 2007-05-18 2007-05-18 Structure de cadre et son procédé de fabrication

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Publication number Priority date Publication date Assignee Title
EP3591160B1 (fr) 2018-07-06 2022-06-22 VKR Holding A/S Cadre de fenêtre conçu pour être utilisé comme un châssis ou un cadre fixe et procédé de fabrication d'un cadre de fenêtre

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Publication number Priority date Publication date Assignee Title
DE3581737D1 (de) * 1985-08-28 1991-03-14 A Cell Acetyl Cellulosics Verfahren zur verbesserung von dimensionsbestaendigkeit und vom biologischen widerstand von lignocellulosestoff.
DK157144C (da) * 1986-07-03 1990-04-16 Rasmussen Kann Ind As Vindueselement
JP3086110B2 (ja) * 1993-07-15 2000-09-11 ワイケイケイ株式会社 木材の防かび処理方法
AT412413B (de) * 2003-07-07 2005-02-25 Topic Gmbh Verschlussorgan für gebäudeöffnungen sowie dessen umrahmung und verfahren zu dessen herstellung
DE202004010345U1 (de) * 2003-07-22 2004-10-07 Holz Schiller Gmbh Holzfenster
CN101313122B (zh) * 2005-11-21 2011-02-02 Vkr控股公司 框架结构以及用于制造该框架结构的方法

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Publication number Publication date
EP2167770A1 (fr) 2010-03-31
EA200971071A1 (ru) 2010-04-30
EA021921B1 (ru) 2015-09-30
WO2008141642A1 (fr) 2008-11-27
PL2167770T3 (pl) 2019-10-31

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