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US20080115442A1 - Composite Sandwich Wall Panel - Google Patents

Composite Sandwich Wall Panel Download PDF

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Publication number
US20080115442A1
US20080115442A1 US10/541,579 US54157904A US2008115442A1 US 20080115442 A1 US20080115442 A1 US 20080115442A1 US 54157904 A US54157904 A US 54157904A US 2008115442 A1 US2008115442 A1 US 2008115442A1
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United States
Prior art keywords
wall panel
panel
wall
fiberglass mesh
primary
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Abandoned
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US10/541,579
Inventor
Chi Wai Cheng
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Individual
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Individual
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    • 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B13/045—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/02—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material with fibres or particles being present as additives in the layer
    • 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
    • B32B13/00—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material
    • B32B13/04—Layered products comprising a a layer of water-setting substance, e.g. concrete, plaster, asbestos cement, or like builders' material comprising such water setting substance 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
    • 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
    • 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
    • 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
    • E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
    • E04C2/284—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating
    • E04C2/288—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups at least one of the materials being insulating composed of insulating material and concrete, stone or stone-like 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
    • B32B2266/00—Composition of foam
    • B32B2266/02—Organic
    • B32B2266/0214—Materials belonging to B32B27/00
    • B32B2266/0221—Vinyl resin
    • B32B2266/0228—Aromatic vinyl resin, e.g. styrenic (co)polymers
    • 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
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • 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
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/304—Insulating
    • 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
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details
    • B32B2309/08—Dimensions, e.g. volume
    • B32B2309/10—Dimensions, e.g. volume linear, e.g. length, distance, width
    • B32B2309/105—Thickness
    • 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
    • B32B2315/00—Other materials containing non-metallic inorganic compounds not provided for in groups B32B2311/00 - B32B2313/04
    • B32B2315/08—Glass
    • B32B2315/085—Glass fiber cloth or fabric
    • 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
    • B32B2607/00—Walls, panels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/24—Structural elements or technologies for improving thermal insulation
    • Y02A30/244—Structural elements or technologies for improving thermal insulation using natural or recycled building materials, e.g. straw, wool, clay or used tires

Definitions

  • the invention is in the field of building construction and relates particularly to a light-weight modular panel system.
  • walls have been constructed from bricks or blocks.
  • the manufacturing of red brick and concrete blocks consumes a great quantity of clay soil and energy.
  • the baking and manufacturing of red bricks is prohibited in many locations as it is highly energy inefficient and contaminates the environment.
  • the subsequent replacement materials have been lightweight cement block or board, internal hollow cement wall panels and gypsum board stud walls.
  • CN-Y-2440872 discloses a fiberglass mesh shell 2 reinforced with cement and sand which completely surrounds a polystyrene core 3 .
  • the shell 2 is continuous and also forms the tongue and groove 4 component of the panel.
  • the single shell design of CN-Y-2440872 restricts the flexibility of customization as a modular wall panel system in the field, and the tongue and groove system with beveled edges is structurally weak.
  • CN-Y-2510558 discloses a fire resistant paneling which is added or retrofit to existing walls as insulation. It is thin, and has no structural value.
  • a principal design feature is a plurality of transverse holes filled with a sand and cement mixture designed to disperse heat.
  • CN-Y-2510558 discloses no means of interlocking or attaching the panels.
  • CN-A-1288991 is a complex panel designed as an insulating panel. It does not have tongue and groove joints or any other method of interlocking with other panels, and is designed to be glued or hung on existing walls for sound insulation or decoration.
  • the present invention entitled the Reconstructable Laminated Wall Panel, discloses a modular wall panel system.
  • the wall panel is comprised of at least two layers of structural gypsum board centrally reinforced with a fiberglass mesh, and at least one polystyrene board laminated together into a complete panel.
  • the gypsum/fiberglass mesh composite layers form the outer faces of the wall panel.
  • the fiberglass reinforced layer may also be composed of a mix of sand, cement and/or gypsum (hydrated calcium sulfate).
  • the fiberglass reinforced layer may include 0.5%-0.3% methylcellulose ether and 0.5%-1.5% redispersable powder, and fine sand with a grain diameter between 0.25mm and 1.5mm.
  • the fiberglass reinforced layer is optimally 8 mm-12 mm thick.
  • the fiberglass mesh eyelet size is optimally 3 mm 2 5 mm 2 .
  • a fiberglass mesh extends beyond all four of the wall panel edges in both the front and back surface layers.
  • the fiberglass mesh optimally extends between 30 mm and 60 mm on the top and bottom edges of a standing wall panel, and 15 mm to 35 mm on the side edges.
  • the wall panel may be fabricated into three or more layers of wall panels.
  • the panels are attached to each other in a seamless wall system without the requirement of being mechanically fixed onto the supporting structure.
  • the panels form walls which are lightweight, easy to install, capable of carrying heavy objects at any location, impact resistant, resistant to cracking, ready to use without plastering or further finishing, sound insulating, heat insulating and fire rated.
  • the Reconstructable Laminated Wall Panel system is suitable for use in indoor and outdoor applications.
  • FIG. 1 is a simple modular wall panel sectional diagram according to the invention.
  • FIG. 2 is an applied modular wall panel sectional diagram according to the invention.
  • the aim of the present invention is to resolve the above problems by supplying a light-weight, modular wall panel system 10 that is strong enough to carry or support heavy objects, easy to install and environmentally friendly.
  • the present other wall system do not allow the flexibility of attaching hanging or fixed objects to the walls in a simple manner after installation.
  • the Reconstructable Laminated Wall Panel System 10 is designed that the central layer or structural layer is comprised of at least one piece of modified gypsum or sand and cement with a fiberglass mesh installed inside and at least one piece of insulating materials, such as polystyrene foam board 3 , in between the structural layers.
  • the front and bottom layers include fine sand gypsum or sand and cement boards 2 with fiberglass mesh 1 inside as well.
  • the Reconstructable Laminated Wall Panel 10 has the following advantages over the present commercially available wall panels:
  • the present invention a modular wall panel, has an optimal height of 2480 mm, but may vary from very small to 3000 mm.
  • the optimal width is 600 mm, but this may vary.
  • the optimal thicknesses are 60 mm, 75 mm and 100 mm, but the overall size used varies according to specific functional requirements of particular buildings.
  • the modular, pre-built wall panels are manufactured as follows: fine sand modified gypsum or sand and cement mortar is mixed and poured into a mould of the selected size.
  • the fiberglass mesh 1 is added in the mix forming fine sand modified gypsum or sand and cement panel with a fiberglass mesh 1 extending beyond the limit or edges of the panel on all sides.
  • the pre-cut polystyrene board 3 is added in between the above-described manufactured panel layer and formed into a three layer modular wall panel. Five-layer or more-layered modular wall panels are formed according to aforementioned production procedures.
  • the fine sand in the modified gypsum or sand inside the cement panel with fiberglass mesh 1 inside layer optimally has a granular size of 0.25-1.5 mm.
  • the ratio (by weight) is 10%-30%. Sand of a bigger size would destroy the brightness of the panel surface while smaller sizes are not suitable for maintaining the strength of the panel.
  • the fiberglass mesh 1 installed inside the fine sand modified gypsum or sand and cement layer 2 is optimally 8 mm-12 mm thick.
  • the fiberglass mesh eyelet size is optimally between from 3 mm ⁇ 3 mm to 5 mm ⁇ 5 mm. Mesh eyelets of a bigger size would reduce the tension strength while mesh eyelets of a smaller size would affect the perfect infilling of materials to the eyelets and have the strength of the joint and panel.
  • the fiberglass mesh 1 installed inside the fine sand modified gypsum or sand and cement layer 2 extends outside the panel by, optimally, 15 mm-35 mm on the left and right sides, and 30 mm-60 mm from the top and bottom of the panel.
  • the reinforcing which the mesh provides strengthens the panel joint and ensures that there is no cracking.
  • the fine sand modified gypsum or sand and cement with fiberglass mesh 1 inside laminated panel could include, in a variation, 0.15%-0.3% methylcellulose ether and 0.5%-1.5% redispersable powder.
  • the redispersable powder is optionally a mixture of vinyl acetate/ethylene copolymer or ethylene/vinyl laurate/vinyl chloride terpolymer. This addition improves the flexural and shear strength and reinforces the wall.
  • the manufacture of the internal modular wall panel into five layers is the preferred embodiment.
  • the front and back or outside layers and the third or middle layer in-between are fine sand modified gypsum or sand and cement with fiberglass mesh 1 inside, while the second and the fourth layers are polystyrene foam boards 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Laminated Bodies (AREA)
  • Panels For Use In Building Construction (AREA)
  • Building Environments (AREA)
  • Finishing Walls (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The present invention relates to a composite sandwich wall panel comprising: at least two fine sand gypsum or concrete panels (I) in each of which a glass fiber web (2) is disposed at center, and at least one polystyrene panel (3), which are bonded alternatively. The surface layer and the bottom layer are the fine sand gypsum or concrete panels, and according to the requirement, the wall panel can be produced to have three or more layers of composite panels. The wall panel of the present invention has advantages of light weight, easy installation, strong loading capacity, no seam crack, no plaster, and good performance of thermal insulation, sound insulation and fireproof as well as it is suitable for internal wall and external wall.

Description

    TECHNICAL FIELD
  • The invention is in the field of building construction and relates particularly to a light-weight modular panel system.
    • BACKGROUND OF THE INVENTION
  • Historically, walls have been constructed from bricks or blocks. The manufacturing of red brick and concrete blocks consumes a great quantity of clay soil and energy. In addition, the baking and manufacturing of red bricks is prohibited in many locations as it is highly energy inefficient and contaminates the environment. The subsequent replacement materials have been lightweight cement block or board, internal hollow cement wall panels and gypsum board stud walls. These materials, however, have the following deficiencies:
      • 1. They are unable to support heavy domestic objects, such as bookshelves, cabinets, and air conditioners etc. Special fixtures to the wall panel are required in order to support such heavy objects.
      • 2. The panel joints in dry wall and concrete block wall systems are imperfect. As the panel is usually joined using a different compound or even adhesive tape, even slight temperature variations cause panel joint separation again and damage to the joint material. Plastering of such cracks is an unavoidable cost and such walls require constant maintenance and repair.
      • 3. Uneven or imperfect joints or cracking problems as mentioned above in hollow cement wall panels results in a network of cracks, fissures and small spaces. These spaces become home to various household insects and other unwelcome living organisms and waste material. p1 4. Hollow and lightweight partitions do not provide good sound nor heat insulation. Such partitioning systems require further modification (such as installing insulation) to resolve these issues which adds construction time and cost to each job.
  • CN-Y-2440872, for example, discloses a fiberglass mesh shell 2 reinforced with cement and sand which completely surrounds a polystyrene core 3. The shell 2 is continuous and also forms the tongue and groove 4 component of the panel. The single shell design of CN-Y-2440872 restricts the flexibility of customization as a modular wall panel system in the field, and the tongue and groove system with beveled edges is structurally weak.
  • CN-Y-2510558 discloses a fire resistant paneling which is added or retrofit to existing walls as insulation. It is thin, and has no structural value. A principal design feature is a plurality of transverse holes filled with a sand and cement mixture designed to disperse heat. CN-Y-2510558 discloses no means of interlocking or attaching the panels.
  • CN-A-1288991 is a complex panel designed as an insulating panel. It does not have tongue and groove joints or any other method of interlocking with other panels, and is designed to be glued or hung on existing walls for sound insulation or decoration.
  • There is therefore a need for a modular panel with an improved method and apparatus for attachment to other panels and the ceiling and floor to form a load bearing wall and provide the advantages being a lightweight wall panel system for installation, being strong enough to carry heavy objects, being easy to install, and having components which are environmentally friendly.
    • SUMMARY OF THE INVENTION
  • The present invention, entitled the Reconstructable Laminated Wall Panel, discloses a modular wall panel system. The wall panel is comprised of at least two layers of structural gypsum board centrally reinforced with a fiberglass mesh, and at least one polystyrene board laminated together into a complete panel. The gypsum/fiberglass mesh composite layers form the outer faces of the wall panel. The fiberglass reinforced layer may also be composed of a mix of sand, cement and/or gypsum (hydrated calcium sulfate).
  • Advantageously, the fiberglass reinforced layer may include 0.5%-0.3% methylcellulose ether and 0.5%-1.5% redispersable powder, and fine sand with a grain diameter between 0.25mm and 1.5mm. The fiberglass reinforced layer is optimally 8 mm-12 mm thick. The fiberglass mesh eyelet size is optimally 3 mm 2 5 mm2.
  • An additional important feature of the wall panel system is that a fiberglass mesh extends beyond all four of the wall panel edges in both the front and back surface layers. The fiberglass mesh optimally extends between 30 mm and 60 mm on the top and bottom edges of a standing wall panel, and 15 mm to 35 mm on the side edges.
  • In a variation, depending on requirements such as sound insulation, fire rating and thermal insulation, the wall panel may be fabricated into three or more layers of wall panels.
  • During assembly, utilizing the extended mesh and tongue and groove arrangement, the panels are attached to each other in a seamless wall system without the requirement of being mechanically fixed onto the supporting structure.
  • Further advantages of the wall system are that the panels form walls which are lightweight, easy to install, capable of carrying heavy objects at any location, impact resistant, resistant to cracking, ready to use without plastering or further finishing, sound insulating, heat insulating and fire rated. The Reconstructable Laminated Wall Panel system is suitable for use in indoor and outdoor applications.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • The apparatus and method of the present invention will now be described with reference to the accompanying drawing figures, in which:
  • FIG. 1 is a simple modular wall panel sectional diagram according to the invention.
  • FIG. 2 is an applied modular wall panel sectional diagram according to the invention.
    •  DETAILED DESCRIPTION AND PREFERRED EMBODIMENT
  • The aim of the present invention is to resolve the above problems by supplying a light-weight, modular wall panel system 10 that is strong enough to carry or support heavy objects, easy to install and environmentally friendly. The present other wall system do not allow the flexibility of attaching hanging or fixed objects to the walls in a simple manner after installation.
  • The Reconstructable Laminated Wall Panel System 10 is designed that the central layer or structural layer is comprised of at least one piece of modified gypsum or sand and cement with a fiberglass mesh installed inside and at least one piece of insulating materials, such as polystyrene foam board 3, in between the structural layers. The front and bottom layers include fine sand gypsum or sand and cement boards 2 with fiberglass mesh 1 inside as well.
  • This invention, the Reconstructable Laminated Wall Panel 10 has the following advantages over the present commercially available wall panels:
      • 1. The panels are light-weight and easy to install. The weight of the Reconstructable Laminated Wall Panels 10 (Internal and External) is no more than 40 to 50 kg per m2. Installation is easily performed by two workers.
      • 2. The panels are able to carry or support heavy objects. Any commercially available wall hanger may be used, enabling, the wall system to support all kinds of heavy objects.
      • 3. The panels are modular, and are easily constructed or assembled together to become a single partition wall or panel. Individual wall panels are joined by means of the fiberglass mesh 1 which extends beyond the edges of the panel and a homogeneous joint compound is added. The fiberglass mesh 1 provides a structural link between individual panels and reinforces the joint compound and ensures that there is no contraction or expansion of the joint and maintains the wall in a crack-free state as with complete walls not comprised of individual panels.
      • 4. No finishing plaster is required after installation. As the surfaces of the wall panel are flat and smooth, and the panel material and the joint mortar are homogeneous single material, the finished surface of the wall panel only requires a simple skim coat of plaster before paint and wall paper application.
      • 5. Sound Insulation:
      •  As the Reconstructable Laminated Wall Panel 10 is comprised of gypsum and insulating materials, such as polystyrene boards 3, which are good sound insulating materials, and the tongue 5 and grove 4 joint fits snugly and supports and reinforces adjacent panels, the panels form an effective noise barrier compared with other walls of comparable thickness.
      • 6. Thermal Insulation:
      •  In addition to providing good sound insulation, both gypsum and polystyrene boards provide effective heat insulation. The combination of the two heat insulating materials in this panel provides excellent thermal separation.
      • 7. Fire Retardation:
      •  Both sides of the Reconstructable Laminated Wall panels include modified gypsum or cement which are materials for fire retardation. As a result, the panel provides 1-2 hours of fire retardation.
  • The present invention, a modular wall panel, has an optimal height of 2480 mm, but may vary from very small to 3000 mm. The optimal width is 600 mm, but this may vary. The optimal thicknesses are 60 mm, 75 mm and 100 mm, but the overall size used varies according to specific functional requirements of particular buildings.
  • The modular, pre-built wall panels are manufactured as follows: fine sand modified gypsum or sand and cement mortar is mixed and poured into a mould of the selected size. The fiberglass mesh 1 is added in the mix forming fine sand modified gypsum or sand and cement panel with a fiberglass mesh 1 extending beyond the limit or edges of the panel on all sides. The pre-cut polystyrene board 3 is added in between the above-described manufactured panel layer and formed into a three layer modular wall panel. Five-layer or more-layered modular wall panels are formed according to aforementioned production procedures.
  • The reference numbers for the attached FIGS. 1 and 2 are as follows:
      • 1 fiberglass mesh
      • 2 modified fine sand gypsum or cement sand board
      • 3 polystyrene panels
      • 4 joint grove
      • 5 joint tongue
  • The following materials are employed for the manufacture of the modular wall panels:
  • The fine sand in the modified gypsum or sand inside the cement panel with fiberglass mesh 1 inside layer optimally has a granular size of 0.25-1.5 mm. The ratio (by weight) is 10%-30%. Sand of a bigger size would destroy the brightness of the panel surface while smaller sizes are not suitable for maintaining the strength of the panel.
  • The fiberglass mesh 1 installed inside the fine sand modified gypsum or sand and cement layer 2 is optimally 8 mm-12 mm thick. The fiberglass mesh eyelet size is optimally between from 3 mm×3 mm to 5 mm×5 mm. Mesh eyelets of a bigger size would reduce the tension strength while mesh eyelets of a smaller size would affect the perfect infilling of materials to the eyelets and have the strength of the joint and panel.
  • The fiberglass mesh 1 installed inside the fine sand modified gypsum or sand and cement layer 2 extends outside the panel by, optimally, 15 mm-35 mm on the left and right sides, and 30 mm-60 mm from the top and bottom of the panel. The reinforcing which the mesh provides strengthens the panel joint and ensures that there is no cracking.
  • The fine sand modified gypsum or sand and cement with fiberglass mesh 1 inside laminated panel could include, in a variation, 0.15%-0.3% methylcellulose ether and 0.5%-1.5% redispersable powder. The redispersable powder is optionally a mixture of vinyl acetate/ethylene copolymer or ethylene/vinyl laurate/vinyl chloride terpolymer. This addition improves the flexural and shear strength and reinforces the wall.
  • The manufacture of the internal modular wall panel into five layers is the preferred embodiment. The front and back or outside layers and the third or middle layer in-between are fine sand modified gypsum or sand and cement with fiberglass mesh 1 inside, while the second and the fourth layers are polystyrene foam boards 3.
  • As will be apparent to those skilled in the art in light of the foregoing disclosure, many alterations and modifications are possible in the practice of this invention without departing from the spirit or scope thereof. Accordingly, the scope of the invention is to be construed in accordance with the substance defined by the following claims.

Claims (21)

1-7. (canceled)
8. A wall panel having at least four edges and comprised of at least two primary layers comprised of a fiberglass mesh disposed in a mix and at least one secondary layer of lightweight material disposed between said primary layers.
9. The wall panel of claim 8 wherein there are two said primary layers, a first primary layer forming a front of said wall panel and a second primary layer forming a back of said wall panel, further comprising a single said secondary layer disposed between said primary layers, thereby providing a modular wall panel.
10. The wall panel of claim 8 wherein there are three said primary layers, a first primary layer forming a front of said wall panel, a second said primary layer forming a central layer, and a third primary layer forming a back of said wall panel, further comprising two said secondary layers disposed between said primary layers, thereby providing a modular wall panel.
11. The wall panel of claim 8 wherein said mix is selected from the group consisting of fine sand and gypsum; pure gypsum; and fine sand and cement, for building construction.
12. The wall panel of claim 8 wherein said lightweight material is polystyrene foam.
13. The wall panel of claim 8 wherein said primary layers are comprised of 10% to 30% by weight fine sand with a grain size between 0.25 and 1.5 mm.
14. The wall panel of claim 10 wherein said primary layers are between 8 and 12 mm thick.
15. The wall panel of claim 10 wherein said fiberglass mesh has an eyelet size between 3 mm by 3 mm and 5 mm by 5 mm.
16. The wall panel of claim 10 wherein said central layer extends beyond one edge of said panel, thereby forming a tongue.
17. The wall panel of claim 16 wherein said central layer is recessed along a side of said panel thereby forming a groove adapted to receive said tongue, such that a close-fitting joint is formed between adjacent, installed said panels.
18. The wall panel of claim 17 wherein said fiberglass mesh extends from all four edges of said panel.
19. The wall panel of claim 17 wherein said tongue and said groove have sides substantially perpendicular to said edge and are thereby adapted to connect in a tight fitting manner.
20. The wall panel of claim 18 wherein said fiberglass mesh extends between 15 mm and 35 mm from a left and right edge of said panel, and between 30 mm and 60 mm from a top and bottom of said panel, thereby providing structural support to said joints.
21. The wall panel of claim 8 wherein said panel is adapted for installation as an external wall panel with an interior face suitable for supporting hanging items and paint or wall paper.
22. The wall panel of claim 8 wherein said mix comprises between 0.15% and 0.3% methylcellulose ether and between 0.5% and 1.5% redispersable powder which is a combination of the chemical additives of: vinyl acetate; ethylene copolymer; ethylene; vinyl laurate; and vinyl chloride terpolymer are components of said mix.
23. The wall panel of claim 18 wherein said fiberglass mesh is adapted to overlap said fiberglass mesh extending from other wall panels during installation.
24. The wall panel of claim 23 wherein a plurality of said panels are attached to each other by said tongue and groove edges interlocking and being reinforced by said overlapping fiberglass mesh thereby forming a continuous, seamless wall which is load bearing, fire resistant, and soundproof.
25. The wall panel of claim 8 wherein there are four said primary layers, a first primary layer forming a front of said wall panel, a second and the third primary layers forming the intermediate central layers, a four primary layer forming a back of said wall panel, further comprising three said secondary layers disposed between said four primary layers, thereby providing a modular wall panel.
26. A method of building a wall from modular wall panels having a fiberglass mesh extending beyond all four edges of said panel, a tongue extending from one side edge and a groove in the opposite side edge, comprising the steps of:
a) inserting a tongue of a second panel in a groove of a first panel and overlapping the fiberglass mesh of the two panels thereby creating a joint;
b) fixing the two said fiberglass mesh together;
c) covering said joint with joint filler of the same materials; and
d) repeating steps (a) to (c) to create a wall.
27. The method of claim 26 comprising the additional steps of affixing said fiberglass mesh extending from a bottom edge of said panel to the top of the connecting panel below or to a floor, and affixing said fiberglass mesh extending from a top edge of said panel to the bottom of the connecting panel above or to a ceiling.
US10/541,579 2003-01-28 2004-01-14 Composite Sandwich Wall Panel Abandoned US20080115442A1 (en)

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CNB031137032A CN100353015C (en) 2003-01-28 2003-01-28 Composite sandwich wall panel
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PCT/CN2004/000044 WO2004067871A1 (en) 2003-01-28 2004-01-14 A composite sandwich wall panel

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CN1514086A (en) 2004-07-21
CN100353015C (en) 2007-12-05
EP1602789A1 (en) 2005-12-07
HK1051777A2 (en) 2003-08-01
AU2004207164A1 (en) 2004-08-12
WO2004067871A1 (en) 2004-08-12

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