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WO2000030845A1 - Panneau multicouche et son utilisation en tant que coffrage - Google Patents

Panneau multicouche et son utilisation en tant que coffrage Download PDF

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Publication number
WO2000030845A1
WO2000030845A1 PCT/EP1999/008829 EP9908829W WO0030845A1 WO 2000030845 A1 WO2000030845 A1 WO 2000030845A1 EP 9908829 W EP9908829 W EP 9908829W WO 0030845 A1 WO0030845 A1 WO 0030845A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
layer
polyolefin
layers
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP1999/008829
Other languages
English (en)
Inventor
Paolo Steinbach
Fulvio Capussotti
Sandro Marcarino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GOR Applicazioni Speciali SpA
Original Assignee
GOR Applicazioni Speciali SpA
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 GOR Applicazioni Speciali SpA filed Critical GOR Applicazioni Speciali SpA
Publication of WO2000030845A1 publication Critical patent/WO2000030845A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • 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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/20—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of plastics
    • E04C2/22—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of plastics reinforced
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/05—Forming boards or similar elements the form surface being of plastics
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/025—Polyolefin
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/024—Honeycomb
    • 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
    • B32B2307/712—Weather resistant
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable
    • B32B2307/7246—Water vapor barrier
    • 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
    • B32B2419/00—Buildings or parts thereof
    • B32B2419/04—Tiles for floors or walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G2009/023—Forming boards or similar elements with edge protection

Definitions

  • the invention relates to a composite multilayer panel, particularly suitable for formworks , especially in floors .
  • Such panels are known and one application thereof consists in building formworks for concrete placing.
  • the panels form the walls for containing the poured concrete and are supported by metal frames or the like.
  • These panels are typically composed of a core consisting of a layer made of wooden parts, which is provided on its sides with a plastic protective coating glued to the wooden layer .
  • the attachment of the outer coating layers to the wooden core requires a gluing step; the panel is composed of materials such as plastic, wood and adhesives , which are generally incompatible for recycling; the outer plastic layers tend to come off the wood in time ; the inner wooden core, also due to long periods of use in often unfavorable environmental conditions , tends to degrade, for example due to moisture absorption which allows the growth of molds or else; these phenomena attack the wooden core of the panel whereby the latter can no longer meet the requirements for resistance to dynamic and static stresses .
  • said weakening can cause at best the panel to bend or bulge, and even break, which can affect the quality of building manufactures and be very dangerous for structure stability and/or personnel safety.
  • the panel weight to load resistance ratio is often unsatisfactory, especially due to the weight of the wooden core.
  • the invention has the object to provide, by simple and inexpensive arrangements, a panel such as the one described hereinbefore, allowing to obviate the above drawbacks and particularly allowing to : reduce, with equal resistance, the weight of the panel as compared with known panels ; provide a chemical and weathering resistant panel, with particular reference to the above mentioned effects of moisture absorption, so that the panel can maintain all its features in time, particularly static and dynamic resistance; make the panel from compatible materials, in view of the recycling steps, while also avoiding the use of adhesives or the like; provide an effective penetration through the panel and a good hold or engagement of nails, screws, anchor screws or other similar fasteners , while maintaining or improving the so-called "nailability" , i.e.
  • the ductile fracture characteristics of the panel provide a particularly safe panel, suitable, in particular, for use in making formworks for casting concrete floor slabs ; provide that the panel has a pleasant aspect, even in terms of environmental impact, and that it has such chromatic characteristics as to represent a code for identifying particular areas , e.g. at the construction site; provide an panel which is very easy to fabricate while providing it with a great versatility both in terms of construction and in terms of application for use in a variety of fields .
  • the invention achieves the above purposes by providing a panel such as the one described hereinbefore , which has a core consisting of at least one layer made of a high density expanded or foamed material and/or by at least a honeycomb or grille like layer made also preferably of polyolefin-based material .
  • the expanded or foamed material forming the core may be a polyolefin material, such as polypropylene or polyethylene, having a density of 100 to 300 g/m 3 , particularly of 130 to 200 g/m 3 .
  • the honeycomb or grilled layer may also be made of polyolefin resin based material which may be also provided mixed with and of one or more inert fillers, particularly cellulose fillers , such as a mixture of wood flour and polypropylene, particularly of a material known in the market as Wood-Stock®.
  • inert fillers particularly cellulose fillers , such as a mixture of wood flour and polypropylene, particularly of a material known in the market as Wood-Stock®.
  • the outer coating layer may be made of a mixture of a polyolefin material fillers , particularly cellulose fillers, such as a mixture of wood flour and polypropylene, particularly of a material known in the market as Wood-Stock®.
  • a polyolefin material fillers particularly cellulose fillers, such as a mixture of wood flour and polypropylene, particularly of a material known in the market as Wood-Stock®.
  • This material forming the outer layer is of the type having a high resistance modulus , particularly of 2000 to 5000 megapascal.
  • the panel is closed, preferably in a water-tight manner, along its peripheral edges, by ribs which have, at least partly and at least for a part of their extension, a non-constant section, particularly receding towards the inner part of the panel, especially triangular.
  • the particular conformation of said ribs provides the advantage of enlarging the adhesion surface between them and the panel core, while improving the moisture-tightness of the panel .
  • These ribs also help to stiffen the peripheral edges of the panel.
  • the ribs may advantageously be made of a polyolefin material or of a filled polyolefin material, particularly filled with cellulose materials, preferably of a mixture of wood flour and polypropylene (Wood-Stock®) .
  • More than one core layer of the same kind or of different kinds may be bond directly together or by interposed intermediate layers in order to form a composite multilayer core .
  • the outer coating layer may show a multilayer structure .
  • a panel which has the following characteristics :
  • the panel is substantially chemical and weathering resistant, with particular reference to moisture absorption;
  • the panel maintains unaltered dynamic resistance characteristics in time, thus ensuring a longer life
  • the panel is made from materials belonging to the same family, particularly to the family of polyolefin materials , and that no adhesives of any type are required, since the attachment between layers is obtained by chemical and physical adhesion by heat and compression when the layers are joined together, the panel is made of compatible materials , in view of the recycling processes;
  • the expanded or foamed material forming the core provides all the layers with a very good ductile fracture characteristic when nails or similar are inserted therein and effectiveness in engaging threaded parts, anchor screws or other fasteners, without chipping;
  • the panel is very easy and inexpensive to make in various versions to suit different fields of application .
  • the panel may be dynamically preloaded by arching it in one, two or more directions opposite to loading.
  • the panel is particularly suitable for fabricating formworks for casting concrete floor slabs, since by being arched for preloading, it can endure deformations under load in a predetermined and controllable manner, thereby avoiding undesired bulging effects .
  • the panel preloaded by arching may advantageously be thinner than the flat one.
  • the panel may have at least one inner, intermediate stiffening layer.
  • This stiffening layer may consist of a plastic plate, preferably made of a polyolefin material filled or not, in this case, with cellulose materials, e.g. of a mixture of polypropylene and wood flour (Wood- Stock®) .
  • said layer may also consist of a continuous or discontinuous sheet or plate made of plastic or metal, particularly of a net made of plastic, particularly polyolefin plastic, or metal.
  • said layer can be made of natural or synthetic fibers or mixtures thereof, in the form of fabric, nonwoven fabric, like mat.
  • the various types of stiffening layers as described above may be also provided in any combination.
  • the intermediate stiffening layer may be structured, i.e. also composed of several layers, or may have stiffening members , such as thicker parts , beads , ribs or the like, in different patterns to provide the required static or dynamic characteristics .
  • the adjacent layers made of the expanded or foamed material or other types of materials advantageously have complementary shapes .
  • the panel may have at least one honeycomb intermediate stiffening layer, preferably made of a filled or non-filled polyolefin material.
  • At least one inner layer made of an expanded or foamed material has a plurality of grooves for housing stiffening bars, strips or the like.
  • said grooves have a size corresponding to the section of the stiffening bars , strips or the like .
  • the grooves are oriented in at least two transverse directions and form a grille pattern, while a complementary stiffening grille is provided.
  • the bars, strips, grilles or the like may be made of a filled or non-filled polyolefin material and/or of a material compatible with the layer made of the expanded or foamed material which is also a polyolefin material .
  • said bars, strips, grilles or the like may advantageously be connected to the corresponding sides of the housing grooves of the layer made of the expanded or foamed material by chemical and physical adhesion, particularly by surface melting and/or welding of the mutually adhering faces , especially while joining together the layers of the panel under the action of heat and pressure.
  • the outer layers may be pigmented, i.e. colored, and each panel may have a single color, or partly one or more different colors either in the same panel or in different panels , and/or between sides and/or peripheral edges of the same panel .
  • the color or color combination of at least a part of at least one or both faces and/or of one or more peripheral edges of each panel may be a code for identifying at least major characteristics of fabrication, composition and/or designed use of the panel .
  • the color or color combination of the panel may be a means to identify higher or lower risk areas , or particular areas of the structure built by using the panels .
  • the color or color combination in each panel and between panels may be a finishing element for the structure built by using the panels .
  • At least one of the two outer layers may be further coated, on its outer face, with a finishing layer.
  • Finishing layers may be for example anti UV layers or anti-scratch layers combined with further finishing layers or taken alone .
  • All the layers composing the panel may be directly bonded one to the adjacent other. Furthermore bonding may be achieved by means of adhesive layers or films, in particular based on polyolefin resins .
  • the outer layer, or at least one of the outer layers may be a composite one comprising at least one sheet made of plastic, preferably polyolefin resin based material and one wood sheet.
  • the wood sheet may be an intermediate sheet between two plastic layers .
  • the plastic sheet or sheets combined with the wood sheet are of polypropylene charged with inert charges and the wood sheet may be a multilayer wood or the like
  • the panel has a pleasant exterior aspect in terms of environmental impact, particularly in town environments, in which when buildings are built/redeveloped, huge structures formed by scaffolds or the like must often be erected.
  • the above characteristics make the panel suitable to other applications, such as the fabrication of outside and inside walls or building works, caissons, prefabricated building manufactures or the like, containers, boxes, holders, packages, walls for modular and movable partitions, bulkheads and walls for ships and vessels or the like.
  • Fig. 1 is a cross sectional view of a first embodiment of the panel according to the inventio .
  • Figs. 2 to 10 are views of certain different embodiments of the panel according to the invention.
  • Fig. 11 is a perspective exploded view of a detail of a further embodiment of the panel according to the invention.
  • Fig. 12 is a cross sectional view of a detail of the panel as shown in fig. 11.
  • a first embodiment of the panel in accordance with the invention comprises a core consisting of a layer 1 made of a high-density expanded or foamed material .
  • Said layer 1 may be made of any expanded or foamed material suitable for the purpose, though the use of a polyolefin expanded or foamed material, such as polypropylene, polyethylene or other materials, is preferable.
  • the density of the material forming the layer 1 is of 100 to 300 g/m 3 , particularly of 130 to 200 g/m 3 . In the simplest embodiment as shown in fig .
  • the core 1 made of an expanded material is externally coated on one side, preferably on both, with a layer 2.
  • a layer 2 is made of a mixture of a polyolefin material and fillers, particularly cellulose fillers , such as a mixture of wood flour or talc and polypropylene, particularly of a material known in the market as Wood-Stock®.
  • the outer layers 2 are made in such a way as to have a high resistance modulus , particularly a modulus of 2000 to 5000 megapascal.
  • the characteristics of the material forming the layer 1 provide the advantage of a considerable weight reduction, with equal resistance, as compared to the known wooden-cored panels .
  • the polyolefin material forming the layer 1 also has the advantage of not being exposed to degradation phenomena due to molds or the like, caused by moisture absorption inside the panel. Thereby, the panel according to the invention has the advantage of a longer life than known panels, and of considerable savings in fabrication costs and, as a consequence , in purchase costs for final users .
  • the layer 1 made of the expanded or foamed material provides the panel with ductile fracture properties for inserting for example nails, the so- called “nailability" , while preventing chipping, which could affect the structure of the panel and shorten its life, as well as be a risk for the operator. Similar advantages are obtained as to the possibility to tighten screws or other threaded or self-tapping members, directly in the panel or as to the engagement and hold of anchor screws or other similar fasteners .
  • the outer panel/s 2 provide the panel with a considerable structural rigidity and a considerable resistance to stresses , particularly transverse stresses.
  • Wood-Stock® has the advantage of not chipping when it is cut, thereby allowing, for example, the panel to be adapted to particular sizes and/or shapes required by specific needs .
  • the surface of Wood-Stock® has excellent characteristics in terms of wear, chemical and weathering resistance , and can be easily cleaned to remove concrete residues or the like .
  • the embodiment of the panel as shown in fig. 1 is covered, along the peripheral edges, with ribs 3, having a triangular section, receding towards the inner part of the panel.
  • This particular conformation provides the advantage of enlarging the contact surface, and hence improving adhesion, between said ribs 3 and the material forming the internal layer 1 of the core and to ensure a better sealability of the edges of the panel, preventing, for example, moisture absorption.
  • Said ribs 3 may have, at least partly, and at least for a part of their extension, any other section, particularly non constant and receding towards the inner part of the panel .
  • the ribs 3 are made of a polyolefin material or of a polyolefin material particularly filled with cellulose materials, preferably of a mixture of wood flour or talc and polypropylene (Wood-Stock®) .
  • the panel described herein is made of materials belonging to the same family, particularly that of polyolefin materials , thus providing considerable advantages in the recycling step. Also, all the panel parts described herein are joined together by chemical and physical adhesion, whereby the gluing step is avoided as well as the presence of any type of adhesives, which would be a foreign element in the panel composition and an obstacle to recycling.
  • Fig. 2 shows an embodiment of the panel according to the invention which has the same composition of layers and materials as the panel of fig . 1 , but in this case, the panel is dynamically preloaded upon forming, by arching it in directions opposite to loading. Said arching operation may follow one, two or more directions.
  • This arrangement which is particularly useful in making formworks for concrete floor slabs , provides the advantage of compensating the bulging effect caused by loading and ensure that, under load, the panel yields in a predetermined and controllable manner, taking the final desired flat shape.
  • panels can be provided, with the same thickness as the flat ones, which can be designed for higher loads , or need reduced support structures , while ensuring optimal results .
  • the panel as shown in fig. 3 has the same layer structure as the panels of figs . 1 and 2 , with the addition of an intermediate stiffening layer 4 , placed in a median position with respect to the two outer layers 2 of the panel .
  • the stiffening layer may consist of a plate , preferably made of the same material (Wood-Stock®) as the outer layers 2.
  • This stiffening layer 4 may be positioned in any other desired intermediate position between the two outer layers 2. This solution provides the advantage of increasing the resistance of the panel while maintaining the same thickness or of reducing the thickness while maintaining the same load.
  • the inner stiffening layers 4 may be also provided in a greater number . Particularly, in figs . 4 and 5 , there are two of them, positioned in such a way as to divide the core 1 made of the expanded or foamed material into three layers 1 , 1' , 1' ' .
  • the intermediate stiffening layers 4 may be positioned in any manner, e.g. equally spaced from each other, symmetric to the median plane or asymmetric thereto and/or closer to said median plane (fig. 4) or closer to the outer layers 2 (fig. 5) , having equal (fig. 4) or different thickness (fig. 5) . Any other location of these layers inside the thickness of the layer 1 of the panel, and in any number may be provided.
  • Advantages are obtained from making said stiffening layer/s from a material compatible , in view of recycling operations , to the materials of the other panel parts.
  • the stiffening layer/s may be made of materials differing from the one described herein, e.g.
  • the panel has an inner honeycomb stiffening layer 8 , preferably made of a polyolefin material , again in view of said recycling operations .
  • the intermediate honeycomb layer 8 is interposed between two layers 1 made of a high density expanded or foamed material as defined above, and the panel is coated on each face with a layer 2 made of a filled plastic material .
  • the honeycomb stiffening layer 8 may be made from one piece or by joining together several layers 8a, 8b, 8c, as shown in fig. 6A.
  • the honeycomb layer 8 is thicker than the adjacent layers 1 made of the expanded or foamed material, whereas in fig. 7 these layers 1 have equal thickness.
  • different arrangements may be provided, with different positions of the three layers 8, 1, possibly even in asymmetric positions to the outer coating layers 2.
  • Fig. 8 shows one more variant embodiment, wherein the core 1 of the panel is composed of a stiffening layer 4, consisting of a plate made of a filled polyolefin layer, e.g. Wood-Stock®, which is interposed first between two stiffening layers 8 made of a honeycomb material , and then between two layers 1 made of an expanded or foamed material .
  • Fig. 9 shows a further embodiment, wherein the core of the panel consists of a layer 1 made of an expanded or foamed material as defined above, interposed between two stiffening layers 8 made of a honeycomb material as defined above .
  • a further construction arrangement for stiffening the core of the panel consists in this case in that a layer 1 made of an expanded or foamed material as defined above has a plurality of grooves oriented in two transverse directions which form a grille pattern. All these grooves 101 are designed to house a stiffening grille 11 composed of ribs 110 oriented transverse to the layer 1 made of the expanded or foamed material and shaped complementarily to the grooves 101.
  • This grille 110 is advantageously made of a polyolefin material, in order to keep the above described advantages for the recycling step.
  • the layer 1 provided with the grooves 101 may be inexpensively fabricated by injection.
  • the grille 11 is connected to the corresponding adhering sides of the housing grooves 101 in the layer 1 made of the expanded or foamed material through chemical and physical adhesion, particularly melting and/or welding of the mutually adhering ces . This is advantageously performed while joining together the various layers of the panel under heat and pressure conditions .
  • stiffening bars there may be provided stiffening bars , strips or the like.
  • one or more intermediate stiffening layers 4 have possibly raised ribs, made of the same material or of another one, and having any conformation, in order to further stiffen said layer.
  • Figs . 13 and 14 show a variant embodiment of the grille 10 as described in the previous embodiment.
  • the panel has been described mainly in its use for building formworks, the versatility of the materials in use make it suitable for different uses, such as building permanent and non permanent linings, movable or fixed walls , doors , roofs , floors , furniture, bulkheads for ships or vessels, caissons, packaging boxes or the like, with high weathering resistance, particularly to moisture, building manufactures or the like.
  • the panels according to the invention may be used for building vans or caravans like campers or similar.
  • Particular applications may be the construction of prefabricated cabins for ships or prefabricated rooms for buildings .
  • the panels according to the invention may be used for fabricating suitcases or suit-boxes, trunks , cases , sheats .
  • a further use of the panel according to the invention is the use in fabricating acoustic boxes for loudspeakers, or the like.
  • the panel according to the invention may be used for structural elements of furnitures, like for example structural elements for seats , chairs , settee , stools , tables , shelves, doors, or the like.
  • the outer layer 2 may be a composite layer .
  • the panel has a f nishing layer comprising a metal sheet 11 , such as aluminum, tin foil or the like, and an outer transparent, preferably glossy plastic laminating film 12, for example made of polypropylene.
  • a metal sheet 11 such as aluminum, tin foil or the like
  • an outer transparent, preferably glossy plastic laminating film 12 for example made of polypropylene.
  • the result thereof is a panel with a mirror or metal surface.
  • other arrangements may be provided, such as a finishing coating consisting of fabric, imitation leather, nonwoven fabric, a film that may be glossy or matt, transparent, colored or else.
  • the sheet 12 or a further outer sheet may have protective characteristics such as anti UV functions and/or anti scratch functions .
  • the layer 2 may have also a combined structure as being formed by an outer sheet 12 made of termoplastic material such as a polyolefin resin based sheet charged with inert charges like wood or similar.
  • the sheet 11 may be a sheet of wood such as a multylayer wood plate or the like.

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

Abstract

L'invention se rapporte à un panneau multicouche composite, conçu particulièrement pour servir de coffrages, notamment de dalles. Conformément à l'invention, le panneau possède un coeur constitué d'au moins une couche (1) composée d'un matériau alvéolaire ou expansé, haute densité, de préférence à base de polyoléfines, et/ou d'une couche de type nid d'abeilles ou grille également constitué de préférence d'un matériau à base de polyoléfines. Ledit panneau présente sur au moins une de ses faces, de préférence sur ses deux faces, un revêtement constitué d'au moins une couche externe (2) à base de plastique ayant un module de résistance élevé, de préférence composée d'un mélange de farine de bois et de polypropylène (Wood-Stock®). Dans une réalisation avantageuse, le panneau peut comporter une ou plusieurs couches intermédiaires de garnissage (4, 8) composées, par exemple, d'une plaque en plastique, d'une couche nid d'abeilles ou de barres, bandes et grilles.
PCT/EP1999/008829 1998-11-19 1999-11-17 Panneau multicouche et son utilisation en tant que coffrage Ceased WO2000030845A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITSV98A000065 1998-11-19
IT1998SV000065A IT1305423B1 (it) 1998-11-19 1998-11-19 Pannello composito multistrato, particolarmente adatto per casseforme,in special modo di solai.

Publications (1)

Publication Number Publication Date
WO2000030845A1 true WO2000030845A1 (fr) 2000-06-02

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PCT/EP1999/008829 Ceased WO2000030845A1 (fr) 1998-11-19 1999-11-17 Panneau multicouche et son utilisation en tant que coffrage

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IT (1) IT1305423B1 (fr)
WO (1) WO2000030845A1 (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130192A3 (fr) * 2000-02-21 2003-03-26 Apsys Gesellschaft für anwendungstechnische Polyurethan-Systeme m.b.H Panneau de coffrage
EP1426525A1 (fr) * 2002-12-03 2004-06-09 DOKA Industrie GmbH Panneau de coffrage spécialement adapté à recevoir des clous
FR2871724A1 (fr) * 2004-06-18 2005-12-23 Gaillon Soc Par Actions Simpli Materiau dit "alveolaire", comprenant deux parois de base et des cloisons perpendiculaires a ces parois de base, et procede d'obtention de ce materiau
FR2871722A1 (fr) * 2004-06-18 2005-12-23 Gaillon Soc Par Actions Simpli Materiau dit "alveolaire" comprenant deux parois de base et des cloisons perpendiculaires a ces parois de base
FR2872085A1 (fr) * 2004-06-25 2005-12-30 Alain Catherineau Panneau composite pour mobilier avion
FR2876624A1 (fr) * 2004-10-19 2006-04-21 Gaillon Soc Par Actions Simpli Materiau dit "alveolaire"
CN1303294C (zh) * 2003-03-11 2007-03-07 李保法 混凝土用模板
WO2008046177A1 (fr) * 2006-10-20 2008-04-24 Quad-Lock Building Systems Ltd. Structure permettant de pratiquer une ouverture dans un mur
WO2008049526A1 (fr) * 2006-10-26 2008-05-02 Rehau Ag + Co Corps creux polymère à remplissage de mousse
WO2008098783A1 (fr) * 2007-02-16 2008-08-21 Interglarion Limited Panneau d'habillage
WO2008131005A1 (fr) * 2007-04-17 2008-10-30 Maxam Industries Inc. Panneaux structurels
SG147328A1 (en) * 2007-04-18 2008-11-28 Choo Wei Fern Composite board
EP2025824A1 (fr) * 2007-08-03 2009-02-18 SCM GROUP S.p.A. panneau et son procédé de fabrication
WO2009022022A1 (fr) * 2007-07-27 2009-02-19 Ulma C Y E, S. Coop. Procédé et installation destinés à la production de panneaux de type sandwich de nature polymérique et panneau obtenu
WO2010041934A1 (fr) * 2008-10-08 2010-04-15 Fetim B.V. Panneau pour surface de marche et son procédé de fabrication
CN101787793A (zh) * 2010-02-11 2010-07-28 詹德威 复合式板材及其施工法
ITVI20090279A1 (it) * 2009-11-20 2011-05-21 Doorlux Srl Elemento stratificato per costruzioni o rivestimenti lignei.
FR2962362A1 (fr) * 2010-07-12 2012-01-13 Alain Catherineau Panneau composite pour mobilier avion
ITMI20111169A1 (it) * 2011-06-27 2012-12-28 Proxital Spa Rivestimento per casseforma per getti in calcestruzzo
JP2014105422A (ja) * 2012-11-22 2014-06-09 Marutaka Kogyo Inc 型枠
WO2016091244A3 (fr) * 2014-12-08 2016-08-11 Wenker Gmbh & Co. Kg Système de panneaux pour aménager des pièces
GB2513834B (en) * 2013-03-07 2017-03-29 Swift Group Ltd A method of assembling a caravan or motorhome floor
CN114655354A (zh) * 2022-03-24 2022-06-24 中国船舶重工集团公司第七一三研究所 一种船用低密高强非金属复合地板
CN114801259A (zh) * 2022-03-09 2022-07-29 中国船舶重工集团公司第七二五研究所 一种互锁式双向格栅结构增强泡沫夹芯复合材料制备方法
WO2024114873A1 (fr) * 2022-11-30 2024-06-06 STARCKE, Lene Bols Élément de construction de bâtiment et procédé de fabrication d'un élément de construction de bâtiment

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FR2635349A1 (fr) * 1988-08-09 1990-02-16 Gertic Panneau muni de raidisseurs de renforcement
GB2252078A (en) * 1991-01-22 1992-07-29 Short Brothers Plc Noise attenuation panel
US5178941A (en) * 1991-09-06 1993-01-12 Pao-Sou Lin Precast concrete slab and method of making same
WO1995023682A1 (fr) * 1994-03-04 1995-09-08 Armacel Pty Ltd Procede et appareil de formage d'articles structuraux
JPH09291688A (ja) * 1996-04-25 1997-11-11 Sekisui Plastics Co Ltd 畳 床
US5695870A (en) * 1995-04-06 1997-12-09 The Dow Chemical Company Laminated foam insulation board of enhanced strength

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2635349A1 (fr) * 1988-08-09 1990-02-16 Gertic Panneau muni de raidisseurs de renforcement
GB2252078A (en) * 1991-01-22 1992-07-29 Short Brothers Plc Noise attenuation panel
US5178941A (en) * 1991-09-06 1993-01-12 Pao-Sou Lin Precast concrete slab and method of making same
WO1995023682A1 (fr) * 1994-03-04 1995-09-08 Armacel Pty Ltd Procede et appareil de formage d'articles structuraux
US5695870A (en) * 1995-04-06 1997-12-09 The Dow Chemical Company Laminated foam insulation board of enhanced strength
JPH09291688A (ja) * 1996-04-25 1997-11-11 Sekisui Plastics Co Ltd 畳 床

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 098, no. 003 27 February 1998 (1998-02-27) *

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130192A3 (fr) * 2000-02-21 2003-03-26 Apsys Gesellschaft für anwendungstechnische Polyurethan-Systeme m.b.H Panneau de coffrage
EP1426525A1 (fr) * 2002-12-03 2004-06-09 DOKA Industrie GmbH Panneau de coffrage spécialement adapté à recevoir des clous
CN1303294C (zh) * 2003-03-11 2007-03-07 李保法 混凝土用模板
FR2871724A1 (fr) * 2004-06-18 2005-12-23 Gaillon Soc Par Actions Simpli Materiau dit "alveolaire", comprenant deux parois de base et des cloisons perpendiculaires a ces parois de base, et procede d'obtention de ce materiau
FR2871722A1 (fr) * 2004-06-18 2005-12-23 Gaillon Soc Par Actions Simpli Materiau dit "alveolaire" comprenant deux parois de base et des cloisons perpendiculaires a ces parois de base
EP1614534A1 (fr) * 2004-06-18 2006-01-11 Gaillon S.A.S. Materiau dit alveolaire
EP1614533A1 (fr) * 2004-06-18 2006-01-11 Gaillon S.A.S. Materiau dit "alveolaire"
FR2872085A1 (fr) * 2004-06-25 2005-12-30 Alain Catherineau Panneau composite pour mobilier avion
FR2876624A1 (fr) * 2004-10-19 2006-04-21 Gaillon Soc Par Actions Simpli Materiau dit "alveolaire"
WO2008046177A1 (fr) * 2006-10-20 2008-04-24 Quad-Lock Building Systems Ltd. Structure permettant de pratiquer une ouverture dans un mur
WO2008049526A1 (fr) * 2006-10-26 2008-05-02 Rehau Ag + Co Corps creux polymère à remplissage de mousse
RU2456162C2 (ru) * 2007-02-16 2012-07-20 Интерглэрион Лимитед Облицовочная панель
US8206802B2 (en) 2007-02-16 2012-06-26 Interglarion Limited Trim panel
WO2008098783A1 (fr) * 2007-02-16 2008-08-21 Interglarion Limited Panneau d'habillage
WO2008131005A1 (fr) * 2007-04-17 2008-10-30 Maxam Industries Inc. Panneaux structurels
SG147328A1 (en) * 2007-04-18 2008-11-28 Choo Wei Fern Composite board
WO2009022022A1 (fr) * 2007-07-27 2009-02-19 Ulma C Y E, S. Coop. Procédé et installation destinés à la production de panneaux de type sandwich de nature polymérique et panneau obtenu
EP2025824A1 (fr) * 2007-08-03 2009-02-18 SCM GROUP S.p.A. panneau et son procédé de fabrication
WO2010041934A1 (fr) * 2008-10-08 2010-04-15 Fetim B.V. Panneau pour surface de marche et son procédé de fabrication
ITVI20090279A1 (it) * 2009-11-20 2011-05-21 Doorlux Srl Elemento stratificato per costruzioni o rivestimenti lignei.
CN101787793A (zh) * 2010-02-11 2010-07-28 詹德威 复合式板材及其施工法
FR2962362A1 (fr) * 2010-07-12 2012-01-13 Alain Catherineau Panneau composite pour mobilier avion
ITMI20111169A1 (it) * 2011-06-27 2012-12-28 Proxital Spa Rivestimento per casseforma per getti in calcestruzzo
JP2014105422A (ja) * 2012-11-22 2014-06-09 Marutaka Kogyo Inc 型枠
GB2513834B (en) * 2013-03-07 2017-03-29 Swift Group Ltd A method of assembling a caravan or motorhome floor
WO2016091244A3 (fr) * 2014-12-08 2016-08-11 Wenker Gmbh & Co. Kg Système de panneaux pour aménager des pièces
CN114801259A (zh) * 2022-03-09 2022-07-29 中国船舶重工集团公司第七二五研究所 一种互锁式双向格栅结构增强泡沫夹芯复合材料制备方法
CN114655354A (zh) * 2022-03-24 2022-06-24 中国船舶重工集团公司第七一三研究所 一种船用低密高强非金属复合地板
WO2024114873A1 (fr) * 2022-11-30 2024-06-06 STARCKE, Lene Bols Élément de construction de bâtiment et procédé de fabrication d'un élément de construction de bâtiment
DK202201089A1 (en) * 2022-11-30 2024-07-17 Smartpanels Aps Building construction Element and Method for Manufacturing a Building Construction Element
DK181936B1 (en) * 2022-11-30 2025-04-03 Smartpanels Aps Building construction element and method for manufacturing a building construction element

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ITSV980065A0 (it) 1998-11-19
ITSV980065A1 (it) 2000-05-19
IT1305423B1 (it) 2001-05-04

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