GB2526280A - Composite panel - Google Patents

Composite panel Download PDF

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Publication number
GB2526280A
GB2526280A GB1408837.1A GB201408837A GB2526280A GB 2526280 A GB2526280 A GB 2526280A GB 201408837 A GB201408837 A GB 201408837A GB 2526280 A GB2526280 A GB 2526280A
Authority
GB
United Kingdom
Prior art keywords
layer
reinforced plastic
fibre reinforced
timber product
composite panel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1408837.1A
Other versions
GB201408837D0 (en
GB2526280B (en
Inventor
Howell Morse
Eirian Thomas
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.)
MORGAN MARINE Ltd
Original Assignee
MORGAN MARINE Ltd
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 MORGAN MARINE Ltd filed Critical MORGAN MARINE Ltd
Priority to GB1408837.1A priority Critical patent/GB2526280B/en
Publication of GB201408837D0 publication Critical patent/GB201408837D0/en
Publication of GB2526280A publication Critical patent/GB2526280A/en
Application granted granted Critical
Publication of GB2526280B publication Critical patent/GB2526280B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different 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
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/10—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • 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
    • B32B21/04—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/28—Layered products comprising a layer of synthetic resin comprising synthetic resins not wholly covered by any one of the sub-groups B32B27/30 - B32B27/42
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
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    • 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
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    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B32B5/02—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 structural features of a fibrous or filamentary layer
    • B32B5/10—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 structural features of a fibrous or filamentary layer characterised by a fibrous or filamentary layer reinforced with filaments
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B5/16—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 formed of particles, e.g. chips, powder or granules
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • 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
    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
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    • B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/28—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
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    • B32B2250/00—Layers arrangement
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    • B32B2255/00—Coating on the layer surface
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    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2305/08—Reinforcements
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/38—Meshes, lattices or nets
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
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    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B2607/00—Walls, panels

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

The composite panel comprises (in order): an optional gel coat 2; a fibre reinforced plastic (FRP) layer 4; an engineered timber product layer 6; a sheet 8 having a plurality of apertures therein; at least one elongate reinforcing element 10, at least partially received within; another FRP layer 12, that also at least partially receives; another engineered timber product layer 20; and optionally another fibre reinforced plastic layer 22. Preferably, the sheet 8 is a metal mesh, the fibrous reinforcements are glass fibres, the reinforcing elements 10 are spaced apart wooden battens and the engineered timber product 6, 20 is oriented strand board or plywood. Preferably the FRP 12 forms a crown 12 comprising side walls 14 and cap 16 over each batten 10. The method of forming the composite panel is also claimed. Preferably the at least partially liquid FRP 12 flows into a plurality of manufactured imperfections. The panel provides housing for tanks, water pumps and switchgear.

Description

I
Composite Panel The present invenLion relates to a composite panel, and in particular a composite structural panel, and in a particular a composite panel that may be used in construction of enclosures.
Housings or enclosures that house sensilive or expensive equipment must provide good insulation, high fire rating, good acoustic properties and provide security to prevent unwanted access to the housing. Such equipment may be sensitive or expensive and may include tanks, water pumps and switchgear as examples only. A number of composite panels have been utilized for this purpose, however, due to the increased requirement to ensure security in, for example, the utility and construction sectors traditional construction materials arc either weak where access can be obtained through the composite panel or inherently too heavy and expensive due to the increased amount of material used. The traditional approach to increasing strength is to use metal plated panels with the plating thickness increasing with the requirement for further increase in strength.
The present invention provides an improved composite panel.
According to the present invention there is a composite panel having a laminate structure and including in the defined order: a) a first fibre reinforced plastic layer; b) an engineered timber product layer; c) a sheet having a plurality of apertures therein; d) at least one elongate reinforcing element; e) a second fibre reinforced plastic layer comprising on a first side a first receiving zone arranged to at least partially receive the reinforcing element and a second receiving zone on a second opposing side; 1) an engineered timber product portion at least partially received within the second receiving zone.
The present invention provides a composite panel having significantly improved properties for withstanding attempted access through the panel. In (he case the composite panel is utilized in a building or enclosure the composite panel may be a structural panel, particularly a wall panel, S and provides beneficial properties to limit possibility of unauthorized access therethrough.
The panel is designed such that in use the layer (a) is the outermost or outer layer. Beneficially, a coating layer is provided outwardly of the first fibre reinforced plastic layer. The coating layer provides a finished to the composite panel and has weather resistance and aesthetic function.
This laycr may bc semi-gloss, tcxturcd, or may have acsthctic effects such as brick, wood or stone effects. LI is beneficially a gel which solidifies to form a tough outer layer of the composite panel.
It will be appreciated that reference is made to fibre reinforced plastic where beneficial properties of the present invention are achieved utilizing, for example, glass reinforced plastics (01(P).
A third fibre reinforced plastic layer is beneficially provided outwardly of the engineered timber product portion. The third fibre reinforced plastic layer beneficially forms the inner surface of an enclosure eonstruetcd utilizing the claimed pancl. As fibre rcinforecd plastic is applied in a partially liquid state, the fibre reinforced plastic material ensures bonding with the adjacent layer, providing structural integrity to the panel.
The at least one reinforcing element is beneficially an elongate structural element. Such structural elements are widely used in building and may comprise battens which are typically timber. Such battens may be sawn and as they are effectively encapsulated in the coniposiLe panel timber treatment is not essential. The elongate structural element has a longitudinal axis which beneficially extends in the plane of the panel.
The second fibre reinforced plastic layer preferably includes one or more crowns on the first side, each crown having side walls and a cap portion defining the first receiving zone on the first side to receive a reinforcing element. The first receiving zone is beneficially a channel. The second fibre reinforced plastic layer is beneficially therefore castellated. The second fibre reinforced plastic layer therefore effectively follows the contours of the underlying materials, which comprise a sheet having a plurality of apertures therein and the at least one reinforcing S element.
The second receiving zone is beneficially laterally spaced from the at least one reinforcing element by a side wall of the crown. At least two spaced apart reinforcing elements and two or more corresponding crowns are beneficially provided and the second receiving zone extends between the side walls of neighbouring crowns.
It will be appreciated that it is beneficial for each composite panel to include a plurality of reinforcing elements. Such reinforcing elements beneficially extend parallel to one another in a composite panel and are beneficially spaced apart. In cross-section therefore the second receiving zone is beneficially provided between adjacent reinforcing elements. The engineered timber product portion is therefore accommodated at least partially in the second receiving zone.
The side walls of the at least one crown are beneficially substantially aligned with corresponding side walls of the engineered timber product portion. It is beneficial that a reasonably tight fit is achieved between the crown and the engineered timber product portion to ensure structural integrity of the composite panel, The cap portion and the engineered timber product portion beneficially together provide support lbr the third fibre reinforced plastic layer. The cap portion and a surface of the engineered timber product portion are beneficially substantially aligned in a plane parallel to the plane of the panel. This means that a substantially flat plane is provided onto which the third fibre reinforced plastic layer is applied.
The engineered timber product portion beneficially comprises a plurality of manufactured imperfections therein. Such manufactured imperfections are beneficially provided in a surface of the engineered timbcr product portion facing the second fibre reinforced plastic layer.
Manufactured imperfections are beneficially apertures, recess, grooves or other formations that can receive fibre reinforced plastic when the fibre reinforced plastic is in at least a partially liquid state. Apertures are beneficially provided through the engineered timber product portion which aids in manufacture as the fibre reinforced plastic passes into and may Iransfer through the apertures ensuring a good bond between the engineered timber product portion and the underlying layers. In particular, the fibre reinforced plastic material in the embodiment shown in the present application transfers into the apertures and also into the sheet having a plurality of apertures therein and as such achieves bonding of the composite panel as a whole.
Thc cnginccrcd timber product layer beneficially also includes a plurality of manufactured imperfections therein. This provides the benefit of ensuring bonding between the engineered timber product layer and the first fibre reinforced plastic layer and as these manufactured imperfections are heneficially apertures therethrough the engineered timber product's layer, fibre reinforced plastic material transfers through the apertures during manufacture to aid bonding to the sheet having a plurality of apertures therein, It will he appreciated therefore that the first and/or second fibre reinforced plastic layer includes migration of the fibre reinforced plastic into at least an adjaccnt layer. The engineered timber product layer and/or the sheet having a plurality of apertures therein, and/or the engineered timbered timber product portion beneficially include fibre reinforced plastic material absorbed therein. Fibre reinforced plastic material in at least partially liquid state will impregnate naturally into an engineered timber product material. Inclusion of manufactured imperfections therein increases the volume of fibre reinforced plastic material that may be transferred into the engineered timber product material.
The sheet having a plurality of apertures therein is beneficially a metal sheet.
The present invention also extends to a method of manufacturing a composite panel having a laminate structure comprising the steps in the defined order of: a) providing a first fibre reinforced plastic layer; b) layering an engineered timber product layer; c) layering a sheet having a plurality of apertures therein; d) layering at least one reinforcing element; e) layering a second fibre reinforced plastic layer to define a first receiving zone for receiving the reinforcing element on a first side arid a second receiving zone on the second opposing side; 1) positioning an engineered timber product portion at least partially within the second receiving zone.
Step (0 is beneficially carried out when the second fibre reinforced plastic layer is at least partially in the liquid state.
The method further comprises the step of subsequently layering a third fibre reinforced plastic layer.
The engineered timber product portion beneficially includes a plurality of manufactured imperfections therein, and as step (0 occurs the at least partially liquid fibre reinforced plastic flows into the plurality of manufactured imperfections.
The panel is preferably compressed to achieve beneficial bonding of the layers.
The present invention will now be described by way of example only and with reference to the accompanying drawings wherein: Figure 1 is a schematic perspective view of a composite panel construction according to an exemplary embodiment of the present invention.
Figure 2 is a schematic cross-sectional view of the constructed composite panel according to an exemplary embodiment of the present invention.
Referring to Figures 1 and 2, presented is an exemplary embodiment of the present invention. It will be appreciated that the thickness of the composite panel in total may be approximately 120mm and as such the schematic diagrams showing the respective thicknesses of the layers in the composite construction are not to scale, but have been drawn for clarity of the individual layers.
Referring to Figures 1 and 2, the first or outermost layer of the composite panel that faces the outside environment is an external, weatherproof layer and provides an aesthetic finish. This finish is achieved through the provision of a gel coat (2) which can be provided to show the required outcr cffcct of thc panel. Such an cffcct may be semi-gloss, tcxturcd, brick cffcct, timber effect, or stone effect as examples.
A layer of fibre reinforced plastic (subsequently referred to as glass reinforced plastic (GRE')) (4) is then provided onto the gel coat (2). This is the first GRP layer and is applied during is manufacture to the gel coat provided in a mould. The gel coat is tacky as the partially liquid GRP is added to ensure adhesion. An engineered timber product layer it then provided onto the first GRP layer. The first engineered timber product layer (6) preferably comprises a plurality of manufactured imperfections to achieve a strong bond with the GRP layer (4). Such manufactured imperfections may be apertures through the engineered timber product layer (6) or may bc altcrnativc configurations. Apertures therethrough are particularly beneficial for bonding of the sheet (8). The engineered timber product layer is beneficially a composite timber product and even more beneficially is a board/sheet. Suitable materials are, for example, plywood or orientated strand board (OSB). Plywood is typically utilized due to relative low cost and beneficial properties.
The sheet (8) having a plurality of apertures Iherein is provided layered over the flrst engineered timber product layer (6). It is beneficial that upon manufacture GRP transfers through the engineered timber product layer and also adheres to the sheet. The sheet is beneficially mesh and as such is provided with regular apertures.
Reinforcing elements such as wooden battens (10) are beneficially provided spaced apart with a longitudinal axis parallel to the major plane of the panel. The reinforcing elements are structural elements and are often termed battens'. Timber is a suitable batten material.
S A second libre reinforced plastic layer (12) is provided to cover the battens (10) and the underlying sheet (8). This ORB therefore migrates Lhrough the sheet ensuring adhesion.
Furthermore, this ORB layer takes the profile of the underlying sheet (12) and the battens (10), thus defining a first receiving zone for receipt of the batten(s). As such the profile is substantially castellated. The form of the (IRP layer (12) therefore is a crown over each of the battens (10) where the crown comprises side walls (14) and cap (16). A second receiving zone (18) is therefore defined and is filled with an engineered timber product portion (20).
Accordingly, when viewing the panel end on as shown in Figure 2 this part of the panel has an engineered timber product portion (20) adjacent GRP material (14) adjacent a wooden batten (10). During manufacture as the GRI' layer (12) is at least partially liquid during assembly the engineered timber product portions (20) arc effectively squelched or forced into the second receiving zones (18). As the engineered timber product portions beneficially include manufactured imperfections such as apertures extending therethrough then GRP material (12)is forced into those apertures. In addition to the usual absorption by an engineered timber product portion, transfer of such GRP material aids in bonding of the composite panel improving strength and preventing delamination.
A further or third fibre reinforced plastic layer (GRP) layer (22) is provided which gives the panel an inner surface which is ready for use. One or more additional layers can be added for aesthetic effect or further strength if desired. Again, during manufacture there is migration of the GRP material through any manufactured defects in the engineered timber product portion (20) in addition to absorption.
The consuction of the panel as defined in the claims provides an improved strength, reduced resistance to attack and lower weight panel construction. The gel coat forms part of the structure and is provided in a uniform layer and provides an external weatherproof and aesthetic finish.
The first fibre reinforced layer holds the gel coat and forms part of the structure of the panel. Ii is beneficially a uniform layer and adheres to the engineered timber product layer (6), Fibre reinforced plastic and GRP as discussed provides a significant benefit in that it is extremely good in absorbing impact. Due to its inherent flexibility impact is absorbed and the impacting tool will bounce off the composite panel. Such a material is beneficial in seismic environments due to the inherent flexibility as it will not crack and break.
The provision of an engineered timber product layer is of relatively light weight and is a cheap material for provision in such a composite panel. It is also extremely good at withstanding grinding and cutting and adds structure to the composite panel. As such, if the composite panel is attacked, the first GRP layer is extremely good for resisting impact whereas the engineered timber product layer prevents grinding and cutting, and also does not crack.
The sheet, beneficially comprising a metal mesh is beneficially provided to stop cutting if the panel is attacked, for example, with grinders or saws. The provision of the apertures in the sheet stops a saw blade and makes grinding therethrough extremely difficult, and in addition is flexible but provides structural integrity. Ihe apertures in the sheet also aid in bonding together of the composite panel.
A further or second GRP layer is beneficial as again it provides structure to the composite layers it adheres to the sheet (8) and also adhcrcs to thc battens (10). l'hc provision of an cnginccrcd timber product portion accommodated in the receiving zone (18) between adjacent battens (10) ensures structure integrity of the composite panel and minimises cost and weight and again provides a further layer to resist attack.
It is beneficial that the third GRP layer (22) consolidates the composite panel together thus providing a strong, attack resistant composite panel that may be utilized in buildings requiring good security.
It will be appreciated that the present invention has been described by way of example only with reference to the accompany drawings and modifications and variations may be made without departing front the scope of protection afforded by the appended claims. For example, additional layers may be incorporated. Alternative configurations of the layers themselves may be provided such as utilizing different fibre reinforced plastic materials or utilizing a different sheet (8). The sheet (8) is beneficially metal and is a perforated mesh manufactured through punching of a plurality of small apertures. Alternatively, the sheet may be an expanded metal wherein slits are cut in a metal sheet and the sheet is then stretched to open these slits. The first fibre reinforced layer and/or third fibre reinforced layer may include a chemical resistant material for resistance of chemical attack.
GB1408837.1A 2014-05-19 2014-05-19 Composite panel Active GB2526280B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3996907A4 (en) * 2019-07-09 2023-07-12 3E Panels Pty Ltd Structural panel and method of production

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446250A (en) * 1992-10-30 1995-08-29 Yamaha Hatsudoki Kabushiki Kaisha Fiberglass reinforced plastic damping material
WO2001040598A1 (en) * 1999-12-03 2001-06-07 Cambridge Building Technology Limited A structural component

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5446250A (en) * 1992-10-30 1995-08-29 Yamaha Hatsudoki Kabushiki Kaisha Fiberglass reinforced plastic damping material
WO2001040598A1 (en) * 1999-12-03 2001-06-07 Cambridge Building Technology Limited A structural component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3996907A4 (en) * 2019-07-09 2023-07-12 3E Panels Pty Ltd Structural panel and method of production

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