IL282185B1

IL282185B1 - Composite inner wall panel

Info

Publication number: IL282185B1
Application number: IL282185A
Authority: IL
Inventors: Elkhanssa Diab; Abbas Abudayyah
Original assignee: Elkhanssa Diab; Abbas Abudayyah
Priority date: 2018-11-19
Filing date: 2021-04-08
Publication date: 2025-11-01
Also published as: WO2020105035A2; IL282185A; WO2020105035A3

Description

COMPOSITE INNER WALL PANEL RELATED APPLICATION/S This application claims the benefit of priority under 35 DSC §119(0) of U.S. Provisional Patent Application No. 62769002 filed 19 Nov. 2018, the contents of which are incorporated herein by reference in their entirety.

FIELD AND BACKGROUND OF THE INVENTIONThe current invention in some embodiments thereof relates to a panel for assembly inside walls and more particularly but not exclusively a panel having multiple layers.Korean Published Patent Application no. "An inside complex insulated wall and a manufacturing method thereof arc provided to improve the property and make construction easy. CONSTITUTION: A thermal-insulation layer(12) of hard polyurethane foam material is formed between a surface layer( 11’) and a finishing layer( 11). A finish material is made of a gypsum board, cellulose reinforced cement board, a magnesium board, polyester non-woven fabric, pulp, an inorganic material board, woven cloth, and glass fiber. The thickness of the finishing layer is 0.2~10mm. The thickness of surface layer is 0.2~5mm. The thickness of the thermal-insulation layer is 3O~8Omm."US Patent no. 8407965 appears to disclose. "A multi-layer wood panel comprises a core segment, made up of a plurality of layers, and two external finishing layers. Each layer is comprised of several boards, joined at the edges with interlocking fingers or tongues and grooves. The layers of the core segment are joined using wood pegs at specified intervals, with the pegs penetrating all the board layers of the core segment at an angle other than perpendicular to the layers. The core segment and the external finishing layers of the panel are joined using key and groove mortise connections, where the key shape corresponds to the shape of the mortise grooves made in the outer surfaces of the boards of the core segment and in the inner surfaces of the outer finishing layer, which are oriented perpendicular or parallel to the direction of the board fibers." US Patent no. 7225596 appears to disclose, "A self supporting panel system used to fabricate ceilings, floors, walls, or roofs. The panel system is assembled from a plurality of panels, each having a core that is sandwiched between opposing plate members. In a preferred embodiment, the core of each panel includes a unifying material to enhance the load bearing capacity of the panel."Additional background includes US Patent no. 6408594, US Patent no. 3553921, US Patent no. 3274739, US Patent no. 5485703, Chinese Utility Model no. CN2469085, Chinese Patent Publication no. CN102691363, US Patent no. US4315391.

SUMMARY OF THE INVENTION According to an aspect of some embodiments of the invention, there is provided a prefabricated panel for construction of an interior wall including: an engineered wood body; a decorative inner side layer; a self-aligning connector on at least two edges thereofAccording to some embodiments of the invention, the body includes HDF.According to some embodiments of the invention, the decorative inner side layer includes a layer of drywall.According to some embodiments of the invention, the panel has a thickness of between 5 to 18 cm.According to some embodiments of the invention, the body has a thickness of between 3 to 15 cm.According to some embodiments of the invention, the panel has a length of between 100 to 250 cm.According to some embodiments of the invention, the panel has a width of between 40 to 100 cm.According to some embodiments of tire invention, the decorative layer has a thickness of between 2 to 10 mm.According to some embodiments of the invention, the decorative layer has a thickness of between 5 to 20 mm.

According to some embodiments of the invention, the panel has a layer of insulation on a side of the body opposite the inner side.According to some embodiments of the invention, a face of the body opposite the inner side includes an indentation and wherein the layer of insulation fills the indentation.According to some embodiments of the invention, the panel has a second decorative layer on a side of the body opposite the inner side.According to some embodiments of the invention, each of the decorative inner side layer and the second decorative layer includes a layer of dry wall.According to some embodiments of the invention, the self aligning connector includes a slot.According to some embodiments of the invention, a mass of the panel is between 20 to 60 kg/m2.According to an aspect of some embodiments of the invention, there is provided a method of constructing wall in an interior of a structure including: providing al least two prefabricated panels, each panel including a bulk body, a decorative inner side layer a fust self aligning connector on a first edge thereof and a second self aligning connector of a second edge thereof; attaching a first panel of the at least two panels to the structure; and assembling a second panel of the at least two panels to the first panel by connecting the first self aligning connector of the second panel to the second self aligning connector of the first panel.According to some embodiments of the invention, the method where the attaching is to a floor of the structure.According to some embodiments of the invention, tire attaching includes: placing a guide on the floor; and attaching the first self aligning connector of a first panel of the at least two panels to the guide.According to some embodiments of the invention, the method where the attaching is to a wall of the structure.According to some embodiments of the invention, the attaching includes: placing a guide on the wall; attaching the first self aligning connector of a first panel of the at least two panels to the guide.

According to some embodiments of the invention, the method where the attaching is to a ceiling of the structure.According to some embodiments of the invention, the attaching includes: placing a guide on the ceiling; attaching the first self aligning connector of a first panel of the at least two panels to the guide.According to some embodiments of the invention, each of the first self aligning connector and the second self aligning connector include a groove and wherein the assembling includes inserting a tongue to interconnect second self aligning connector of the first panel to the first self aligning connector of the second panel.According to some embodiments of the invention, the method furtiter includes the first cutting the second panel to fit a space.According to an aspect of some embodiments of the invention, there is provided a method of constructing an exterior wall of a structure including: providing a prefabricated panel; assembling an interior wall with the prefabricated panel; constructing an outer facing; and filling a space delaminated on one side by a face of the prefabricated panel and on an opposite side by an inner surface of the outer facing.According to some embodiments of the invention, the filling includes pouring cement into the space.According to some embodiments of the invention, the method furtiter includes attaching the prefabricated panel to a floor of the structure.According to some embodiments of the invention, the attaching includes: placing a guide on the floor; and attaching a self aligning connector of the panel to the guide.According to some embodiments of the invention, the method further includes attaching the prefabricated panel to a frame of the structure.According to some embodiments of the invention, the attaching includes: placing a guide on the frame; and attaching a self aligning connector of the panel to the guide.According to an aspect of some embodiments of the invention, there is provided an interior wall in a structure including: at least two prefabricated panels, each panel including a bulk body, a decorative inner side layer a first self aligning connector on a first edge thereof and a second self aligning connector of a second edge thereof; wherein a first panel of the at least two panels is attached to the structure; and wherein a second panel of the at least two panels is attached to the first panel by a connection between the first self aligning connector of the second panel and the second self aligning connector of the first panel.According to an aspect of some embodiments of the invention, there is provided an exterior wall including: a prefabricated panel including a bulk body, a decorative inner side layer an interior wall including the prefabricated panel; an outer facing; and a filling connecting a face of the panel opposite the inner side to in inner side of the outer facing.Unless otherwise defined, all technical and/or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in tire art to which the invention pertains. Although methods and materials similar or equivalent to those described herein can be used in the practice or testing of embodiments of the invention, exemplary methods and/or materials arc described below. In case of conflict, the patent specification, including definitions, will control. In addition, the materials, methods, and examples are illustrative only and are not intended to be necessarily limiting.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)Some embodiments of tire invention are herein described, by way of example only, with reference to the accompanying drawings. With specific reference now to the drawings in detail, it is stressed that the particulars shown are by way of example and for purposes of illustrative discussion of embodiments of the invention. In this regard, the description taken with the drawings makes apparent to those skilled in the art how embodiments of the invention may be practiced.In the drawings:FIG. 1A is a flow chart illustration of a method for assembling an interior wall in accordance with an embodiment of the current invention;FIG. IB is a flow chart illustration of an exemplary method for assembling an interior wall in accordance with an embodiment of the current invention;FIG. 2 is a flow chart illustration of a method for assembling an exterior wall in accordance with an embodiment of the current invention; FIG. 3 is a profile view of two panels in accordance with an embodiment of the current invention;FIG. 4 is a profile view of connecting two panels in accordance with an embodiment of the current invention;FIG. 5 is a view of an inner facing in accordance with an embodiment of the current invention;FIG. 6 is a view of a rear side of a panel in accordance with an embodiment of the current invention;FIG. 7A is a schematic illustration of a stage in building an outer wall in accordance with an embodiment of the current invention;FIG. 7B is a schematic illustration of a later stage in building an outer wall in accordance with an embodiment of the current invention;FIG. 8 is a schematic profile view of a panel in accordance with an embodiment of the current invention;FIG. 9 is a block diagram of a wall having an inner panel in accordance with an embodiment of the current invention;FIG. 10 is a block diagram of a wall having two panels in accordance with an embodiment of the current invention; andFIG. 11 is a block diagram of a wall having a panel and a facing in accordance with an embodiment of the current invention.

DESCRIPTION OF SPECIFIC EMBODIMENTS OF THE INVENTIONThe current invention in some embodiments thereof relates to a panel for assembling inside walls and more particularly but not exclusively a wallboard panel having multiple layers. Overview An aspect of some embodiments of the current invention relates to a panel for asscmbling an interior wall. Optionally, the panel has a layered form including one or more of an inner decorative facing for example of gypsum and/or wallboard (for example drywall etc.), a bulk body of a self-supporting material such as fiberboard (for example High Density Fiberboard HDF) and/or an insulating layer and/or a vapor barrier (for example of a closed cell foam layer may serve both as insulation and a vapor barrier). Optionally the decorative inner facing is attached to tire body on one side of the body and/or the insulating layer on an opposite side of the body. Optionally the insulation will fill an indentation in the back face of (he body of the panel. Alternatively or additionally, a panel may have inner facing on both (e.g. opposite) faces. For example, such a two faced panel may be used to build an interior dividing wall. In some embodiments, an edge of a panel may include a self-aligning connector. Optionally, the weight of a panel may range between 5 to 20 kg/m2 and/or between 20 to 60 kg/m2 and/or between 60 to 150 kg/m2.An aspect of some embodiments of the current invention relates to a method of assembling an interior wall. In some embodiments, a self-supporting interior building panel is employed. Optionally, a face of the panel may include a decorative surface (for example gypsum board, tile, linoleum and/or paneling etc.). Optionally, an edge of the panel may include a self-aligning fitting (for example a tongue and groove fitting). In some embodiments, a guide will be placed on a surface contacting the wall. Optionally a fitting of an edge of a first panel will attach to the guide. In some embodiments, an edge of a second panel will be attached to an of the first panel. For example, the wall will then be assembled and faced on one assembly. Optionally decorative facings of adjacent panels will automatically be aligned by the edge fittings of the panels.An aspect of some embodiments of the current invention relates to a method of building an external wall of a building. In some embodiments, an interior portion of the wall is built of panels. Optionally, the panels are connected to a frame of the building. An exterior facing of the building may be positioned distanced from the outer side surface of the panels. Optionally, the space between the outer side surface of the panel and the inner side of the exterior facing is filled with concrete. For example, the wall and/or the exterior facing may be built up progressively and/or simultaneously. For example, this methodology may save lime and money in construction of buildings having a stone facing.Before explaining at least one embodiment of the invention in detail, it is to be understood that the invention is not necessarily limited in its application to the details of construction and the arrangement of the components and/or methods set forth in the following description and/or illustrated in the drawings and/or the Examples. The invention is capable of other embodiments or of being practiced or carried out in various ways.FIGs. 1A and IB are a flow chart illustrations of a method for assembling a wall in accordance with an embodiment of the current invention. For example, the method may be used to build an interior wall and/or a partition wall and/or a non-load bearing wall. In some embodiments, a worker may assemble an interior partition wall in a one stage process, for example by stacking self-aligning panels. For example, a worker will simultaneously build the wall and the final facing. For example, for an interior dividing wall, a two faced panel may be used, for example to build the wall with facings on both sides in a single stage (e.g. rather than building a wall body with blocks or the like and then finishing the wall surface with dry wall etc.). For example, for a single faced wall (e.g. with a back of the panel against an existing wall and/or an outer face of the building), a one faced panel may be used.In some embodiments, a worker may attach 103 a panel to the structure of the building. For example, the worker places 102 a guide on a floor and/or a wall and/or a ceiling that contacts an edge of the panel. For example, placing a guide may include connecting the guide to the floor, wall and/or ceiling. For example, connecting may include gluing, nailing and/or screwing the guide to the structure. Optionally attaching 103 a panel to the structure may include attaching the panel to the guide. Optionally, a cement and/or resin (solid drying and/or elastomeric) and/or foam and/or caulking may be used between the guide and the floor, wall and/or ceiling. Optionally, a cement and/or resin (solid drying and/or elastomeric) and/or foam and/or caulking may be used 104 between the panel and the guide. For example, the cement and/or resin (solid drying and/or elastomeric) and/or foam and/or caulking may strengthen the wall (e.g. holding the parts together) and/or waterproof the joints. The panel may then be attached by placing 106 in onto the guide. The method is illustrated for assembling a wall, alternatively or additionally the method could be used for assembling a ceiling and/or a floor. Alternatively, the joints may not be glued. For example, the guide may fit tightly to the panel, keeping the wall together without glue and/or the connector may be self-locking and/or nails or pegs may be used.In some embodiments, a first panel is connected 105 to a second panel. For example, the edges of adjacent panels may include complementary connectors. For example, one panel may include a groove and/or a hole fitting a tongue and/or dowel of a second panel. Alternatively, an intermediary connector may be placed between panels, for example each panel edge may include a groove and an intermediary connector may include a tongue on both sides for placement in between the panels. Optionally, a tongue is supplied and/or cut 108 to the desired size. Optionally, the two panels are placed 112 together joined by the tongue. For example, glue may be placed 110 between the tongue and one or both the panels. For example, each edge may include a protuberance and an intermediate piece may include slots on each side. Optionally, one or more panels and/or intermediate connectors may be cut to size to fit a space. Optionally, a cement and/or resin (solid drying and/or elastomeric) and/or foam and/or caulking may be used between two panels and/or between a panel and an intermediate connector.In some embodiments, a panel may be used as a facing for an existing wall. For example, a wall may be made of blocks and/or other known techniques. Optionally, a facing may be assembled using panels in accordance with the current invention. Optionally, the panels may be attached 103 to the wall and/or connected 105 to one another. For example, attaching 103 a panel to a structure may include attaching the back of a panel to the existing wall. For example, a face may be assembled by connecting 105 self-supporting panels in accordance with the current invention and/or the space between the rear of the panels and the existing wall may be fdlcd with insulation and/or another filler material and/or resin and/or foam and/or cement.FIG. 2 is a flow chart illustration of a method for assembling an exterior wall in accordance with an embodiment of the current invention, hi some embodiments, a frame of a building may be built 202. Then an interior wall and/or ceiling may be assembled 206 with panels in accordance with the current invention. Then an outer face of the wall may be constructed 214. For example, the outer face may include a decorative face such as a stone facing. A filler, for example, concrete is optionally poured filling 216 between the external face of the panels and the back of facing as a form for the concrete. Optionally, a strengthener such as rebar may be put in place before pouring the concrete.

For example, for a wall, after the frame and/or slab of the building have been built 202, an inner wall may be assembled 206 on the slab and/or between pillars etc. Then an outer facing of the building may be constructed 214. Optionally, for example, for a stone facing and/or a brick facing, the facing may be constructed 2progressively. For example, a number of layers of the facing may be constructed 2and then the concrete poured filling 216 in between the facing and the inner wall. Then more layers of the facing may be constructed 214 and/or more cement poured filling 216 into the space between the outer facing face of the panels 701, 701’ and new layers 714b, 714b’, 714b" of the outer facing. In some embodiment, this method will facilitate building an outer wall with reduced building and/or removing temporary cement forms (and/or with greatly reduced use of temporary cement forms).In some embodiments, a frame and/or beams will be built 202 and then a ceiling will be made of panels in accordance with the current invention. For example, panels of the ceiling may be attached 103 to the beams for example by connected to guides in between the beams. Optionally, temporary supports may be placed under the ceiling. Once the ceiling is in place, concrete may be poured on top of the ceiling for example to form a roof. Optionally a cover may be built over the concrete. Alternatively or additionally, a roof may be built over the ceiling. Optionally, the space between die roof and the ceiling may be filled 216 with insulation and/or a resin and/or cement.FIG. 3 is a profile view of two panels 301a, 301b in accordance with an embodiment of the current invention, hi some embodiments, a panel 301a, 301b may have a body 306a, 306b made of HDF and/or another material (optionally recycled wood etc.). Optionally, an inner surface of the panel may have a decorative face 3and/or an inner facing layer 320 for example dry wall, gypsum paneling etc. Optionally, an edge of the board may have a self-aligning connector, for example a slot 304a, 304b. In some embodiments, panels 301a, 301b may be of different thicknesses. Optionally, the connectors of different thickness panels may be designed to self-align the decorative face 318 of the panels. For example, in the drawing arc shown two panels 301a, 301b, one panel 301b having a thickness of 4 cm and a second panel 301a having a thickness of 7 mm. The slots 304a, 304b in each panel 301a, 301b are optionally the same distance from the surface of the decorative face 318 in both panels 301a, 301b. For example, when the panels 301a, 301b are assembled together (he decorative faces 318 form a single smooth surface. Optionally the thickness of a panel may range between 2 to 8 cm and/or between 0 to 2 cm and/or between 7 to 15 cm and/or more. Optionally, the thickness of the decorative inner facing layer 320 may range between 0.5 to 2 cm and/or between 0 to 0.5 cm and/or between 2 to 5 cm and/or more. For example, the thickness of the body may range between 1 to 5 cm and/or between 5 to 14 cm and/or between 14 to25 cm.FIG. 4 is a profile view of connecting two panels 401a, 401b in accordance with an embodiment of the current invention. For example, a tongue 408 may be inserted between two slots 404a, 404b, for example aligning the decorative layers 4and/or faces 418 of (he two panels 401a, 401b. Optionally, the slot 404a, 404b is deeper than the width of the tongue 408. For example, glue and/or insulation and/or sealant is placed in the space between the tongue 408 and the inner edge of the slot 404a, 404b. For example, the two panels 401a, 401b in the figure are each 4 cm thick. Optionally the tongue 408 and/or the body 406 of the panels 401a, 401b are made of HDF and/or another convenient material. Optionally, the panels 401a, 401b and/or the longue 408 are made of an easily cut material. For example, parts can be cut to size to make an assembly (e.g. a wall and/or a ceiling) of any size. Optionally, panels 401a. 401b may be connected side by side and/or stacked and connected one on top of the other. For example, the slots 404a, 404b may be 1/2 cm wide and/or 1 cm deep and/or range between 1/8 cm to 1 cm wide and/or between V4 cm to 2 cm deep. Optionally the tongue 408 is of a thickness fitting snugly into the slot 404a, 404b and/or even slightly thicker than the slot (e.g. between 0 to 1 mm and/or between 1 to 3 mm thicker than the slot) for example to hold the panels 401a, 401b together by compression. Alternatively or additionally, tire tongue (or a portion thereof) is slightly thinner than the slot 404a, 404b, for example so as to not deform the edges of the panels. For example, a thickness of the tongue 408 may range between 0 to 1/8 mm less than the slot 404a, 404b and/or between 1/8 to 1/2 mm and/or between 1/2 to 1 mm and/or between 1 to 3 mm. Optionally (he width of the tongue is slightly less than the slot 404a, 404b for example the total width of the tongue 408 may be between 0 to mm less than the depth of two slots and/or between 2 to 10 mm less. Optionally, a panel 401b may include an insulating layer 422. Optionally the insulating layer may range in thickness between 1 to 5 mm and/or between 5 to 20 mm and/or between to 50 mm. For example, an insulating layer 422 may be on a face of the panel that is opposite the decorative face 418.FIG. 5 is a view of an inner facing in accordance with an embodiment of the current invention. Optionally panels 501a, 501b, 501c in accordance with the current invention may be used as a facing for an existing wall 524. For example, a panel 501a, 501b may be attached to a wall 524 by a connector 542. Alternatively or additionally, a panel 501a, 501b, 501c may rest on a Hoor and/or be attached to a guide. In some embodiments, a panel 501c may be cut to fit a smaller space. Optionally, joint compound (e.g. spackling) may be applied at the joint between two 501a, 501c panels. Optionally panels 501a, 501b, 501c may come in standard sizes for example having a width of 60 cm and/or a length of 120, 130, 140 and/or 150 cm. Optionally smaller 60 cm by 60 cm panels may be available for fitting in left over spaces. In various embodiments, the length of a panel may range between 1 to meters and/or between 50 cm to 1 m and/or between 20 cm to 50 cm. In various embodiments, the width of a panel may range between 1 to 2 meters and/or between cm to 1 m and/or between 20 cm to 50 cm. A panel may be rectangular and/or square and/or have a different shape.FIG. 6 is a view of a rear face of a panel 601, 601’ in accordance with an embodiment of the current invention. For example, a rear face of a panel 601, 601’ may include a hollowed our area (for example in the center of the face e.g. see hollow 834 of FIG. 8). The hollowed-out area is optionally filled with insulation 622. Optionally insulation 622 may range in thickness between 1 to 5 mm and/or between to 20 mm and/or between 20 to 50 mm. Alternatively or additionally, the rear face of the panel 601, 601’ covered with insulation and/or a moisture barrier. For example, the hollowed-out area may have a depth of between 1/2 to 2 cm and/or more and/or less. Optionally the insulation includes a foam applied (for example sprayed) onto the back of the panel 601, 601’. For example, the foam may include polyurethane. Optionally, the foam is compressed. For example, the hollowed-out area may reach within between 1 cm to 5 cm of the edge of the panel and/or between 5 to 15 cm 1 2 and/or between 0 to 1 cm. Optionally the hollowcd-out area docs not reach the inner edge of the slot in the edge of the panel.FIGs. 7 A is a schematic profile illustrations of building an outer wall in accordance with an embodiment of the current invention. For example, an inner wall and/or part of an inner wall may be assembled of panels 701, 701’. Then a portion of outer facing of the building may be constructed (for example stone slabs 714a, 714a’, 714a" and/or bricks etc.). Then a filler 730, for example concrete may be filled between the inner wall and the outer facing. For example, construction may be in accordance the description of Fig. 2.In some embodiments, an inner wall is assembled from panels 701, 701’. Optionally, the panels 701, 701’ may include panels as described in any of the embodiments described herein. For example, an inner face of the panel 701, 701 may include a decorated layer and/or facing. Optionally, the outside facing face (e.g. opposite the inner face) of the panels 701, 701’ may include insulation and/or a moisture barrier. In some embodiments, the body of the panels may be made of HDF. Alternatively or additionally, different kinds of panels and/or building materials may be used to assemble the inner wall.In some embodiments, panels 701, 701’ may be designed for easy assembly. For example, panels may have self aligning connectors. Optionally, some edges of a panel may include a male connector while other edges may include a female connector wherein female edge of one panel may be connected to a male edge of another panel. Alternatively or additionally, there may be matching snap fittings and/or sliding fittings. In some embodiments, panels may have quick assembly that employ a quick connector edge. For example, panels may have matching holes that are connect on assembly with a dowel and/or a screw and/or a pin. Alternatively or additionally, panels 701, 701’ may include a groove 704 on one or more edges thereof. A longue 708 may be inserted into the grooves 704 of adjected panels 701, 701’ joining and or aligning the pane1s70l, 701’. Optionally, the wall and/or some panels 701 thereof are attached to a structure (for example a frame or floor 726 of a building). Optionally a (rack and/or guide 702 is attached to the structure and/or the panel 701 is attached to the guide 702.

FIG. 7B is a schematic profile illustration a first stage of a wall and/or building a second stage the wall in accordance with an embodiment of the current invention. In some embodiments, the construction of the external facing and/or filling may be progressive. For example, a first stage may be constructed for example of three rows of stone 714a, 714a’, 714a". Then space behind the first three rows may be filled in 730 for example with concrete 724. Subsequently, three more rows of stone 714b, 714b’, 714b" may be added and filled in with more filler 730’.In some embodiments, a structure is built and ready with reduced need for building forms for pouring cement. Optionally the structure has multiple layers, an inner decorative facing and/or an outer decorative facing arc built simultaneously with die structure of the wall. The resulting wall may have multiple layers for example including some or all of an inner decorative facing, a panel body, a moisture barrier, insulation, a filled in section (e.g. with concrete 724 and/or reinforcement), and/or an outer face of stone 714a, 714a’, 714a", 714b, 714b’, 714b"FIG. 8 is a schematic profile view of a panel 801 in accordance with an embodiment of the current invention. In some embodiments a panel 801 may include multiple layers. For example, the bulk of the panel 801 may be made of a composite material. Optionally, it may include engineered wood, for example high density fiberboard (HDF) and/or medium density fiberboard (MDF), densified wood, laminated timber, fiberboard and/or plywood. Alternatively or additionally, a composite may include waste material such as plastic waste and/or paper waste and/or aluminum waste and/or glass. For example, the body may be at least 30% and/or at least 50% and/or at least 80% recycled material. For example, the body may be at least 30% and/or at least 50% and/or at least 80% wood fibers. Alternatively or additionally, the body may comprise plastic and/or engineered wood.In some embodiments, the panel 801 includes a decorative interior layer. Optionally, the decorative interior face layer may include gypsum board. In some embodiments an outer face 818 of the decorative layer 820 includes a further layer, for example paper. In some embodiments, the outer face of the decorative layer 8includes beveled edges, for example, to facilitate smoothing joints and/or adding joint compound at the joints between panels 801.

In some embodiments 1, 2, 3 and/or 4 edges of the panel 801 may include a self-aligning connector. For example, when the edges of two panels 801 are connected, the self aligning connector may facilitate aligning the decorative inner faces 818 of the two panels, e.g. to form a smooth surface. For example, the self aligning connector may include a slot 804, 804’ and/or a hole. For example, the slits and/or holes of adjacent panels 801 may be aligned using a tongue 808 and/or a pin to join the slits and/or holes. Alternatively or additionally, some edges may include a male connector while other edges include a matching female connector.In some embodiments, a panel 801 may include a layer of insulation 822. For example, the insulation layer may be positioned on a face opposite said decorative layer 820. In some embodiments, the body may include an indentation 834 (for example of the face opposite the decorative layer 820) into which some or all of the insulation 822 layer fits. Alternatively or additionally, the face opposite the decorative layer 820 may include a moisture barrier. Alternatively or additionally, the face opposite the decorative layer 820 may include a second decorative layer. Alternatively or additionally, the face opposite the decorative layer 820 may include insulation and/or a moisture barrier without an indentation 834. Alternatively or additionally, the face opposite the decorative layer 820 may be a flat surface of the body layer.FIG. 9 is a block diagram of a wall having an inner panel 901 in accordance with an embodiment of the current invention. For example, an embodiment wall panel 901 of the current invention may be used as an interior facing of an existing wall (for example similar to drywall).FIG. 10 is a block diagram of a wall having a two panels 1001, 1001’ in accordance with an embodiment of the current invention; For example, the wall may be made of back to back panels 1001, 1001’ wherein a decorative face of each panel 1001, 1001’ may face outward on opposites sides of the wall. Optionally, space between the back sides of the panels may be filled for example with insulation. Alternatively or additionally, an internal partition wall may be made of a line of interconnected panels 1001, 1001’. For example, the bottom of tire panels may be connected to a floor 1026. Optionally, (he panels 1001, 1001’ arc interconnected by self aligning connectors. For example, there may be a line of panels 1001, 1001’ wherein each panel has a decorative layer on each outer face on opposite sides of die panels 1001, 1001’.FIG. 11 is a block diagram of a wall having a panel 1101 and an outer facing 1114 in accordance with an embodiment of the current invention. For example, in some embodiment a wall may include an inner wall made of prefabricated panels 1101 (for example any of the embodiments of panels disclosed herein) and/or an external surface made of an external facing 1114 (for example bricks and/or stone facing and/or other facing materials). Optionally the space between the facing and the panels is filled with a filler 1124. For example, the filler 1124 may include concrete and/or foam. Optionally the thickness of the filled section between the panels and facing may range between for example 1 cm to 5 cm and/or 5 cm to 10 cm and/or cm to 20 cm and/or 20 cm to 40 cm and/or 40 cm to 1 m. Optionally the filler 11includes a reinforcement.It is expected that during the life of a patent maturing from this application many relevant technologies will be developed and the scope of the terms are intended to include all such new technologies a priori.As used herein the term "about" refers to ±10 %The terms "comprises", "comprising", "includes", "including", "having" and their conjugates mean "including but not limited to".The term "consisting of’ means "including and limited to".The term "consisting essentially of" means that the composition, method or structure may include additional ingredients, steps and/or parts, but only if the additional ingredients, steps and/or parts do not materially alter the basic and novel characteristics of the claimed composition, method or structure.As used herein, the singular form "a", "an" and "the" include plural references unless the context clearly dictates otherwise. For example, the term "a compound" or "at least one compound" may include a plurality of compounds, including mixtures thereof.Throughout this application, various embodiments of this invention may be presented in a range format. It should be understood that the description in range format is merely for convenience and brevity and should not be construed as an inflexible limitation on tire scope of the invention. Accordingly, tire description of a 282185/ range should be considered to have specifically disclosed all the possible subranges as well as individual numerical values within that range. For example, description of a range such as from to 6 should be considered to have specifically disclosed subranges such as from 1 to 3, from to 4, from 1 to 5, from 2 to 4, from 2 to 6, from 3 to 6 etc., as well as individual numbers within that range, for example, 1, 2, 3, 4, 5, and 6. This applies regardless of the breadth of the range.

Whenever a numerical range is indicated herein, it is meant to include any cited numeral (fractional or integral) within the indicated range. The phrases "ranging/ranges between" a first indicate number and a second indicate number and "ranging/ranges from" a first indicate number "to" a second indicate number are used herein interchangeably and are meant to include the first and second indicated numbers and all the fractional and integral numerals therebetween.

It is appreciated that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable sub-combination or as suitable in any other described embodiment of the invention. Certain features described in (he context of various embodiments are not to be considered essential features of those embodiments, unless the embodiment is inoperative without those elements.

In addition, citation or identification of any reference in this application shall not be construed as an admission that such reference is available as prior art to the present invention. To the extent that section headings are used, they should not be construed as necessarily limiting.

Claims

282185/ WHAT IS CLAIMED IS:

1. A prefabricated panel for construction of an interior wall comprising: an engineered wood body; a decorative inner side layer attached to the body on one face of said body, wherein a face of said body opposite said decorative inner side layer includes an indentation and wherein said indentation is filled with a layer of insulation; a self-aligning connector on at least two edges thereof; an outer face opposite said decorative inner side layer; and a filler configured for filling a space between said body and said outer face.

2. The panel of claim 1, wherein said body includes HDF.

3. The panel of claim 1, wherein said decorative inner side layer includes a layer of drywall.

4. The panel of claim 1, having a thickness of between 5 to 18 cm.

5. The panel of claim 1, wherein said body has a thickness of between 3 to 15 cm.

6. The panel of claim 1, having a length of between 100 to 250 cm.

7. The panel of claim 6, having a width of between 40 to 100 cm.

8. The panel of claim 1, wherein said decorative inner side layer has a thickness of between 2 to mm.

9. The panel of claim 1, wherein said decorative inner side layer has a thickness of between 5 to mm.

10. The panel of claim 1, wherein the insulation is polyurethane. 282185/

11. The panel of claim 1, wherein said filler is concrete.

12. The panel of claim 1, having a second decorative layer on a side of said panel opposite said decorative inner side layer.

13. The panel of claim 12, wherein said outer face is said second decorative layer.

14. The panel of claim 12, wherein each of said decorative inner side layer and said second decorative layer includes a layer of drywall.

15. The panel of claim 1, wherein said self-aligning connector includes a slot.

16. The panel of claim 1, wherein a mass of said panel is between 20 to 60 kg/m.

17. A method of constructing an interior wall in a structure, the method comprising: providing at least two prefabricated panels, wherein each said panel comprises: a bulk body; a decorative inner side layer attached to the body on one face of said body, wherein a face of said body opposite said inner side layer includes an indentation and wherein said indentation is filled with a layer of insulation; a first self-aligning connector on a first edge thereof; a second self-aligning connector of a second edge thereof; and an outer face opposite said inner side layer; attaching a first panel of said at least two panels to said structure; and assembling a second panel of said at least two panels to said first panel by connecting said first self-aligning connector of said second panel to said second self-aligning connector of said first panel; and filling a space between said body and said outer face with a filler.

18. The method of claim 17, where said attaching is to a floor of said structure. 282185/

19. The method of claim 18, wherein said attaching includes: placing a guide on said floor; and attaching said first self-aligning connector of a first panel of said at least two panels to said guide.

20. The method of claim 17, where said attaching is to an existing wall of said structure.

21. The method of claim 20, wherein said attaching includes: placing a guide on said existing wall; and attaching said first self-aligning connector of a first panel of said at least two panels to said guide.

22. The method of claim 17, where said attaching is to a ceiling of said structure.

23. The method of claim 22, wherein said attaching includes: placing a guide on said ceiling; and attaching said first self-aligning connector of a first panel of said at least two panels to said guide.

24. The method of claim 17, wherein each of said first self-aligning connector and said second self- aligning connector includes a groove and wherein said assembling includes inserting a tongue to interconnect said second self-aligning connector of said first panel to said first self-aligning connector of said second panel.

25. The method of claim 17, further comprising cutting said second panel to fit a space.