WO2014112629A1 - フロアパネル - Google Patents
フロアパネル Download PDFInfo
- Publication number
- WO2014112629A1 WO2014112629A1 PCT/JP2014/051009 JP2014051009W WO2014112629A1 WO 2014112629 A1 WO2014112629 A1 WO 2014112629A1 JP 2014051009 W JP2014051009 W JP 2014051009W WO 2014112629 A1 WO2014112629 A1 WO 2014112629A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- floor panel
- plate
- foamed cement
- resin
- top plate
- Prior art date
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Definitions
- the present invention relates to a floor panel suitable as a flooring material for indoor or outdoor use, particularly as a flooring material for a free access floor (so-called OA floor).
- Conventional concrete floor panels are formed into a plate by thinly placing concrete in a rectangular formwork.
- reinforcing materials such as expanded metal and reinforcing bars are placed in advance in the formwork. Is arranged and integrated with the hardened concrete to increase the rigidity of the panel.
- the expanded metal is arranged so as to cover almost the entire plane of the floor panel, and the reinforcing bars are arranged, for example, along the outer periphery of the floor panel or passing through the center of the floor panel in a cross shape (for example, patents). Reference 1).
- a steel top plate and a bottom plate are arranged opposite to each other and their outer peripheral edges are connected so as to form a hollow structure, and the hollow portion is filled with lightweight concrete and hardened.
- a steel-made floor panel with lightweight concrete is also known (see, for example, Patent Document 2).
- any of the above-described floor panels are used as flooring materials for indoor use, so that they are required to be thin.
- reinforcement such as embedding a metal reinforcing material in the concrete or covering the entire lightweight concrete with a steel plate is performed.
- the steel plate In the latter floor panel, the steel plate must be assembled into a liquid-tight hollow structure because of the need to prevent leakage when injecting lightweight concrete material, which increases the manufacturing cost and the manufacturing process. There is a problem.
- the present invention has been made in consideration of the problems of the concrete floor panel as described above, and can reduce the weight while ensuring the strength required for the floor panel, and undergoes a complicated process. It aims at providing the floor panel which can be manufactured simply without it.
- Another object of the present invention is to protect the peripheral surface of the floor panel such as the side surface and corners of the floor panel to prevent the floor panel from being damaged during transportation, storage, construction or use.
- an object of the present invention is to provide a floor panel having excellent design properties.
- a floor panel including a foamed cement board including at least a foamed cement layer, and a top plate and a bottom plate respectively joined to an upper surface and a lower surface of the foamed cement board,
- the foamed cement layer contains a fiber in a dispersed state in a porous cement cured body phase, and has a thickness of 12 to 30 mm and a specific gravity of 0.8 to 1.5.
- the at least one edge of the top plate and the bottom plate may cover at least a part of the peripheral surface of the foamed cement plate.
- both the edges of the top plate and the bottom plate may cover the peripheral surfaces of the foamed cement plate opposite to each other.
- the distance between the opposing edges of the top plate and the bottom plate may be 1 to 15 mm.
- the top plate has the same area as or larger than the top surface of the foam cement board, and the edge of the bottom plate covers at least a part of the peripheral surface of the foam cement board.
- the top plate may further include a stone plate or a panel with a stone plate that covers and has a larger area than the top plate.
- At least one of the top plate and the bottom plate may be a metal plate having a thickness of 0.25 to 1.0 mm.
- At least one of the top plate and the bottom plate may be bonded to the upper surface and the lower surface of the foamed cement plate by an adhesive, respectively.
- the adhesive is chlorinated polyolefin resin, polyurethane resin, epoxy resin, acrylic resin, vinyl resin, vinyl acetate resin, polyester resin, ethylene-vinyl acetate copolymer resin, vinyl acrylate copolymer. It may contain at least one resin selected from the group consisting of a resin, a polyamide-based resin, and an ionomer resin.
- the adhesive may be used at 150 to 500 g / m 2 , preferably 200 to 500 g / m 2 , for example.
- the foamed cement board may further include a fiber reinforced resin layer formed on at least one side of the foamed cement layer.
- the floor panel of the present invention it is possible to reduce the weight while ensuring the strength required for the floor panel, and it can be easily manufactured without going through complicated processes.
- the present invention it is possible to protect the peripheral surface of the floor panel such as the side surface and corners of the floor panel and prevent the floor panel from being damaged during transportation, storage, construction or use.
- a floor panel excellent in design can be provided.
- FIG. 15 It is a schematic perspective view which shows one Embodiment of the support leg which can be used with the floor panel of Embodiment 5 or 6 of this invention. It is a schematic side view which shows the support leg shown in FIG. 13 arrange
- the floor panel 10 of the present embodiment includes a foamed cement plate 1 and a top plate 5 a and a bottom plate 5 b that are joined to the upper surface and the lower surface of the foamed cement plate 1, respectively.
- the floor panel 10 can be used such that the top plate 5a is positioned on the front side (floor surface side) of the floor panel and the bottom plate 5b is positioned on the back side.
- the foamed cement plate 1 is composed of the foamed cement layer 3, and the top plate 5a and the bottom plate 5b are joined to the upper surface and the lower surface of the foamed cement layer 3, respectively.
- the foam cement board 1 should just have a foam cement layer at least, and may have another structural member (for example, refer Embodiment 2).
- the foamed cement layer 3 is a material containing at least a cement hardened body and fibers, and is made of a material having a large number of bubbles (or holes) inside. More specifically, in the foamed cement layer 3, fibers are dispersed in a hardened cement phase in which a large number of bubbles are dispersed to form a porous structure. The bubbles in the foamed cement layer 3 contribute to the weight reduction of the foamed cement layer 3 and thus the floor panel 10, and can also improve the heat insulating property.
- the fibers in the foamed cement layer 3 function as reinforcing fibers (hereinafter also referred to as “reinforcing fibers” in the present specification), contribute to the weight reduction of the foamed cement layer 3 and the floor panel 10, and the foamed cement layer 3.
- the strength of the floor panel 10 can be improved.
- the foamed cement layer 3 is produced so as to satisfy a thickness of 12 to 30 mm and a specific gravity of 0.8 to 1.5, for example, a fiber amount of 1 to 15 kg / m 3 , preferably 1 to 10 kg / m 3 .
- the strength and weight of the foamed cement board 1 provided with the foamed cement layer 3 satisfying these conditions are arranged between the top plate 5a and the bottom plate 5b. It has been found that a light floor panel 10 can be obtained while optimizing the balance and having sufficient strength.
- the thickness of the foam cement layer 3 is 12 to 30 mm. If the thickness of the foamed cement layer 3 is less than 12 mm, the strength of the foamed cement layer 3 and thus the entire floor panel 10 is not sufficient. If the thickness exceeds 30 mm, the weight of the foamed cement layer 3 and thus the floor panel 10 increases. The handleability (or workability) may be reduced.
- the thickness of the expanded cement layer 3 is preferably 15 to 25 mm, and typically about 19 to 23 mm.
- the specific gravity of the foamed cement layer 3 is 0.8 to 1.5. If the specific gravity of the foamed cement layer 3 is less than 0.8, the strength of the foamed cement layer 3 and thus the entire floor panel 10 is not sufficient. If the specific gravity exceeds 1.5, the weight of the foamed cement layer 3 and thus the floor panel 10 is sufficient. As a result, the handleability (or workability) may decrease.
- the specific gravity of the foamed cement layer 3 is preferably 1.1 to 1.3.
- specific gravity means specific gravity ( ⁇ ) relative to water.
- the specific gravity of the foamed cement layer 3 can be influenced by various factors, and in particular, can be controlled by adjusting the amount of bubbles and fibers present in the foamed cement layer.
- the bubbles may be closed cells or open cells.
- the specific gravity of the expanded cement layer 3 decreases as the amount of bubbles per unit volume of the expanded cement layer 3 (total volume of bubbles) increases.
- the specific gravity of the foamed cement layer 3 usually decreases as the amount of fiber per unit volume of the foamed cement layer 3 increases.
- the amount of fibers in the expanded cement layer 3 is, for example, 1 to 15 kg / m 3 , preferably 1 to 10 kg / m 3 .
- the fibers are intertwined (or have a reinforcing structure), and the strength of the foamed cement layer 3 can be improved and function as reinforcing fibers.
- the amount of fibers in the expanded cement layer 3 is less than 1 kg / m 3 , the weight of the expanded cement layer 3 and thus the floor panel 10 increases and the strength decreases.
- the amount of fibers in the expanded cement layer 3 is more preferably 3 to 10 kg / m 3 , and still more preferably 3 to 8 kg / m 3 .
- the cement hardened body phase means a cement hardened body, that is, a phase (dispersion medium phase) whose main component is a material hardened by a reaction between cement and water.
- a relatively small amount of substances and / or components exhibiting dispersibility, compatibility or solubility in the cement hardened body may be present.
- the type of cement that is the raw material is not particularly limited, and various cements such as ordinary Portland cement, early-strength Portland cement, and ultra-early-strength Portland cement can be used. Among these, early-strength Portland cement is preferable from the viewpoint of productivity and strength.
- the mixing ratio of cement and water is, for example, 20 to 100 parts by mass of water, preferably 20 to 50 parts by mass of water with respect to 100 parts by mass of cement. If the blending ratio of water is too large, the strength of the foamed cement layer 3 tends to decrease. If the blending ratio of water is too small, the fluidity of the uncured raw material mixture tends to decrease.
- the reinforcing fibers are dispersed in the hardened cement phase, and the reinforcing fibers can be entangled with each other to form a reinforcing structure.
- Such reinforcing fibers include polyvinyl alcohol fibers, polyolefin fibers such as polypropylene fibers and polyethylene fibers, aramid fibers, carbon fibers, copper fibers, and glass fibers.
- polyvinyl alcohol fiber is preferable because it has high durability and is excellent in affinity with cement and a cemented body.
- the fiber length of the reinforcing fiber is not particularly limited, but is preferably in the range of 4 to 35 mm. If the fiber length of the reinforcing fiber is less than 4 mm, the reinforcing effect tends to be insufficient. The longer the fiber length of the reinforcing fiber, the more advantageous in terms of the reinforcing effect. However, if the fiber length is too long, the dispersibility of the fiber is lowered, and the reinforcing fiber is unevenly distributed in the foamed cement layer 3. May reduce strength.
- the thickness of the reinforcing fiber is not particularly limited, but may be in the range of 10 to 100 ⁇ m, for example.
- the foamed cement layer 3 in addition to the reinforcing fibers, other dispersoids such as aggregate (fine aggregate, fine aggregate, coarse aggregate) and the like may be dispersed in the cement hardened body phase.
- aggregate fine aggregate, fine aggregate, coarse aggregate
- the fine aggregate is preferable.
- the foamed cement layer 3 may contain other other substances and / or components such as a foaming agent, a foaming agent, a water reducing agent, a flame retardant, a coloring agent, an AE agent, a waterproofing agent and the like in any form (for example, It may be included in the hardened cement phase, dissolved or dissolved, or dispersed in the hardened cement phase.
- foaming agent and / or a foaming agent In order to include bubbles in the foamed cement layer 3, it is preferable to use a foaming agent and / or a foaming agent.
- the foaming agent and / or foaming agent is not particularly limited, and any foaming agent and / or foaming agent that can be used in applications such as cement, mortar, and concrete may be used.
- foaming agents include protein foaming agents and surfactant foaming agents such as polyethers, aromatic sulfonates (such as alkylbenzene sulfonates), and sulfur-containing compounds (such as higher alkyl ether sulfates).
- a resin foaming agent may be used.
- a metal foaming agent such as aluminum powder may be used.
- the amount and method of addition of the foaming agent and / or foaming agent are not particularly limited, but can be selected / adjusted so that the specific gravity of the foamed cement layer 3 is within the range of 0.8 to 1.5.
- the addition amount of the foaming agent and / or the foaming agent is usually in the range of 0.1 to 3 parts by mass with respect to 100 parts by mass of the cement.
- the addition method includes pre-forming, mix forming, after-forming, etc., but typically, pre-forming can be applied.
- the foamed cement layer 3 can be obtained, for example, as follows.
- the foaming raw material mixture obtained as described above is filled in a mold and cured while curing. As a result, a foamed cement layer 3 is obtained which is dispersed in a state where the reinforcing fibers are entangled with each other in the porous cement cured body phase.
- the foamed cement layer 3 may be directly formed and cured and cured using a mold according to the dimensions of the foamed cement layer 3.
- a foam cement layer 3 having a desired thickness and size is obtained by molding a foam cement block having a large size using a larger mold, curing and curing the block, and obtaining a foam cement layer 3 having a desired thickness and size. May be.
- a large number of foamed cement layers 3 can be finally obtained from one mold, and curing and hardening can be performed together, so that there is an advantage that productivity is improved.
- the curing may be a normal curing, a steam curing, or a combination of both.
- curing is not completed in the mold, but when it is steam-cured in the mold and cured (or solidified) to some extent, usually after several hours, it is removed from the mold and further cured.
- the molding cycle in the frame is shortened and productivity is improved.
- the method for producing the foamed cement layer 3 when the uncured foam raw material mixture is kneaded, a reinforcing structure in which the reinforcing fibers are entangled with each other can be obtained simply by stirring so that the reinforcing fibers are uniformly dispersed. No strength is obtained. Therefore, when the foamed cement layer 3 is manufactured, the conventional complicated work of setting a metal reinforcing material such as expanded metal at a predetermined position in the mold is not required, and the floor panel can be easily manufactured. Manufacturing costs can be reduced. In the example of the method for producing the foamed cement layer 3 described above, the case of the pre-forming has been described. However, even if other foaming methods such as mix forming and after-forming are used, the reinforcing fibers in the uncured foam raw material mixture Can be uniformly dispersed, and the same effect as described above can be obtained.
- top plate 5a and the bottom plate 5b are joined to both surfaces of the foamed cement layer 3 as the upper surface and the lower surface of the foamed cement plate 1.
- top plate 5a and the bottom plate 5b can be appropriately selected according to the use of the floor panel.
- the bottom plate 5b can be used so as to be positioned on the back side of the floor panel 10, design properties are usually not required.
- a metal plate (including a surface-treated metal plate) can be used as the bottom plate 5b from the viewpoint of improving the strength of the floor panel 10, and specifically, an iron plate, an aluminum plate, a steel plate, or the like can be used. Can be used.
- the steel plate include so-called stainless steel plates.
- such a metal plate may be surface-treated by melt (or immersion) plating, electroplating, resin coating, or the like. Among these, a hot-dip galvanized or electrogalvanized steel plate, a galvalume steel plate, and a ZAM steel plate are preferable because of their high corrosion resistance.
- the metal plate includes punching metal, lath and the like in which openings are arranged.
- the bottom plate 5b is a metal plate
- a thin plate having a thickness of less than 3 mm is sufficient as the bottom plate 5b, and preferably has a thickness of 0.25 to 1.0 mm. Thereby, sufficient and moderate intensity
- the top plate 5a may be the same as the above-described bottom plate 5b.
- at least one of the top plate 5a and the bottom plate 5b is a metal plate having a thickness of 0.25 to 1.0 mm. More preferably, the thickness of the top plate 5b is 0.25 to 0.65 mm.
- the top plate 5a can be used so as to be positioned on the front side of the floor panel 10, and in some cases, design properties are required.
- a stone plate or a panel with a stone plate may be used as the top plate 5a.
- natural stones for example, granite, diorite, granite such as hanley rock, marble, etc.
- processed into a plate shape or artificial stone processed into a plate shape may be used. .
- the panel with a stone plate may be formed by joining such a stone plate to a panel portion containing foamed cement, and is lighter and cheaper than a stone plate of the same thickness, and is excellent in performance such as waterproofness.
- panels with stone plates include panels with decorative stone plates described in Japanese Patent No. 4454693 by Kanaflex Corporation, more specifically panels with decorative stone plates sold under the name Kanastone (registered trademark), etc. Is mentioned.
- the thickness of a stone board or a panel with a stone board is not specifically limited.
- the thickness of the stone plate may be such that the stone plate can be processed without cracking, for example, 3 to 15 mm, preferably 3 to 12 mm.
- the thickness of the panel with a stone plate may be, for example, 5 to 35 mm, preferably 10 to 35 mm, more preferably 10 to 20 mm, and still more preferably 15 to 18 mm.
- a porous foam cement layer (thickness: 5 to 20 mm) similar to the above-mentioned foam cement layer is used as a panel portion on a stone plate (thickness: 3 to 15 mm).
- a plurality of (preferably three layers) fiber-reinforced resin layers (thickness: 0.1 to 2.0 mm) described in detail below (for example, FRP layers in which glass fibers are solidified with urethane resin)
- a panel with a stone plate called a high-strength kana stone commercially available from Kanaflex Corporation Co., Ltd. may be used.
- top plate 5a and the bottom plate 5b can be bonded to the upper and lower surfaces of the foamed cement plate 1 (foamed cement layer 3 in the present embodiment) by an adhesive, respectively.
- adhesives examples include chlorinated polyolefin resins, polyurethane resins, epoxy resins, acrylic resins, vinyl resins, vinyl acetate resins, polyester resins, ethylene-vinyl acetate copolymer resins, and vinyl acrylate.
- An adhesive containing at least one resin selected from the group consisting of copolymer resins, polyamide resins, and ionomer resins can be used.
- an adhesive containing an epoxy resin or a polyurethane resin is preferable because high adhesiveness and strength can be obtained.
- the amount of the adhesive used depends on the adhesive used and the adhesive surface material of the foamed cement board 1, but is, for example, 150 to 500 g / m 2 , preferably 200 to 500 g / m 2 , more preferably 200 to 350 g / m 2 . a m 2. Thereby, sufficient and moderate adhesive strength can be obtained.
- usage-amount of an adhesive means the quantity of the adhesive before adhesion
- attachment before hardening
- both the top plate 5a and the bottom plate 5b can be bonded to the foamed cement board 1 with an adhesive.
- the present invention is not limited to this, and either one of the top plate 5a and the bottom plate 5b (for example, the top plate 5a) or both may be joined to the foamed cement board 1 by another method.
- Such another method is not particularly limited, and may be, for example, a press or thermocompression bonding, although depending on the combination of the joining surface materials of the foamed cement plate 1 and the top plate 5a and / or the bottom plate 5b.
- the top plate 5a and the bottom plate 5b only need to cover most of the upper surface and the lower surface of the foamed cement plate 1, and may not cover the entire surface.
- the top plate 5a and the bottom plate 5b may have an area larger than the areas of the upper surface and the lower surface of the foamed cement plate 1, respectively.
- the planar shape of the floor panel 10 of the present embodiment is most convenient for forming one unit as a square as shown in FIG.
- the present invention is not limited to this, and the floor panel 10 may have any appropriate planar shape.
- the floor panel 10 of the present embodiment has been described in detail above.
- the floor panel 10 is lightweight and has a strength required for the floor panel. Furthermore, since the main part is comprised with the inorganic material, this floor panel 10 is a flame retardance, and an incombustible process is unnecessary. Moreover, since the floor panel 10 includes the foamed cement layer 3 therein, the floor panel 10 also has an electric shock prevention property.
- the strength required for the floor panel may vary depending on its application.
- the strength required for the free access floor can be evaluated according to a static load test, an impact test, and a rolling road test specified in JIS A 1450 “Free access floor test method”. Each of these test methods is as defined, but is roughly as follows.
- Static load test The amount of deformation when a predetermined load (for example, 3,000 N) is loaded on the loading point (weakest part) is measured, and the amount of residual deformation after load removal is further measured.
- Impact test The amount of residual deformation is measured when an impacting body (sand bag 30 kg) is freely dropped from a height of 250 mm to an impact point (weakest part).
- Rolling road test The amount of residual deformation is measured when the wheel is reciprocated 5000 times in the row direction (passing through the weakest portion) with a predetermined load (for example, 1,000 N) applied to the wheel.
- the floor panel 10 of the present embodiment exhibits the following performance in each of these tests.
- Static load test deformation amount 5.0 mm or less and residual deformation amount 3.0 mm or less
- Impact test residual deformation amount 3.0 mm or less
- Rolling road test residual deformation amount 3.0 mm or less
- the floor panel 11 of the present embodiment is similar to the floor panel 10 of the first embodiment.
- the foamed cement plate 1 and the top plate 5a joined to the upper and lower surfaces of the foamed cement plate 1, respectively.
- a bottom plate 5b a bottom plate 5b.
- the floor panel 11 can be used such that the top plate 5a is located on the front side (floor side) of the floor panel and the bottom plate 5b is located on the back side.
- the foamed cement board 1 further includes fiber reinforced resin layers 4a and 4b formed on both surfaces of the foamed cement layer 3, so that the fiber reinforced A top plate 5a and a bottom plate 5b are joined to the resin layers 4a and 4b, respectively.
- the floor panel 11 of the present embodiment will be described with a focus on differences from the floor panel 10 of the first embodiment, and the description of the first embodiment applies similarly unless otherwise specified.
- the fiber reinforced resin layers 4a and 4b covering both surfaces of the foamed cement layer 3 are layers (FRP layers) in which reinforcing fibers are embedded in the resin.
- the thickness of the fiber reinforced resin layers 4a and 4b can be set to, for example, about 0.1 to 3.0 mm, preferably about 0.2 to 3.0 mm.
- the same material as the reinforcing fiber in the foamed cement layer 3 described in the first embodiment can be used.
- Examples of the resin (synthetic resin) constituting the fiber reinforced resin layers 4a and 4b include polystyrene foam, polyethylene foam, rigid polyurethane foam, rigid vinyl chloride foam, urea foam, phenol foam, acrylic foam, cellulose acetate foam, and other foams. It is preferable to use a conductive synthetic resin.
- the expansion ratio of the expandable synthetic resin for forming the fiber reinforced resin layers 4a and 4b is not particularly limited, but is preferably about 2 to 10 times.
- polystyrene resin polyethylene resin, rigid polyurethane resin, rigid vinyl chloride resin, urea resin, phenol resin, phenol urethane resin, acrylic resin, cellulose acetate resin, epoxy resin, other non-foaming synthetic resins May be used.
- the fiber reinforced resin layers 4a and 4b can be formed integrally with the foamed cement layer 3 as follows, for example.
- the glass roving wound up in a roll shape is unwound and cut into short fibers having a length of about 20 mm, for example, to obtain reinforcing fibers.
- the reinforcing fiber is spread on one surface of the foamed cement layer 3 produced in the same manner as in the first embodiment using an air gun, and a liquid resin (preferably foamable synthetic resin) is sprayed from the nozzle on the surface. To do. Thereby, the reinforcing fiber is impregnated in the liquid resin, and the fiber-reinforced resin layer is obtained after the resin is cured.
- fiber reinforced resin layers 4a and 4b are obtained.
- the foamed cement layer 3 with the fiber reinforced resin layers 4a and 4b that is, both surfaces of the foamed cement plate 1 are used as a press plate. And press it.
- the pressing is preferably performed at a pressure of 100 to 150 kgf / mm 2 for 20 to 40 minutes, for example. If the pressing time is less than 20 minutes, the thickness of the fiber reinforced resin layers 4a and 4b becomes non-uniform, and the foamed cement layer 3 and the fiber reinforced resin layers 4a and 4b may be separated by secondary foaming.
- the top plate 5a and the bottom plate 5b are respectively provided as the upper surface and the lower surface of the foamed cement plate 1 with respect to the surfaces of the fiber reinforced resin layers 4a and 4b opposite to the foamed cement layer 3. Can be joined.
- the same method as in the first embodiment can be used.
- the fiber reinforced resin layers 4a and 4b can function as an adhesive layer when bonded by pressing.
- the top plate 5a and the bottom plate 5b are respectively positioned on the top and bottom surfaces of the foamed cement layer 3 with the fiber reinforced resin layers 4a and 4b produced as described above, that is, the foamed cement board 1. Integrate by pressing with a press. Such joining by pressing may be performed on the top plate 5a and the bottom plate 5b one by one or both at the same time.
- the surfaces of the fiber reinforced resin layers 4a and 4b are smoothed and both surfaces of the foamed cement plate 1 are pressed to make the thickness uniform, and then the top plate 5a and the bottom plate 5b are foamed cement.
- the top plate 5 a and the bottom plate 5 b are pressed against the foamed cement plate 1.
- the present invention is not limited to this, and when pressing both surfaces of the foamed cement plate 1 , the top plate 5a and / or the bottom plate 5b may be pressed together. In this case, the pressing process for joining can be reduced.
- the floor panel 11 of this embodiment has been described in detail above.
- the floor panel 11 can achieve the same effects as the floor panel 10 of the first embodiment.
- the floor panel 11 of the present embodiment covers both surfaces of the foamed cement layer 3 with the fiber reinforced resin layers 4a and 4b, the rigidity of the foamed cement layer 3 can be increased. It has been confirmed by the present inventor that the floor panel 11 of the present embodiment exhibits a performance equivalent to or higher than that of the floor panel 10 of the first embodiment in each test described above.
- the present invention is not limited to this, and only one of the fiber reinforced resin layers 4a and 4b formed on both surfaces of the foamed cement layer 3 may be used.
- a free access floor can be easily configured by laying a plurality of floor panels so that the bottom plate is placed on a support leg.
- a support leg for example, it can be modified as in the following example.
- the floor panel of the present invention more specifically, the floor panel of the embodiment 1 or 2, has a substantially square planar shape, for example, a floor panel 13 shown in FIG. 7a (hereinafter may be referred to as “corner processed portion 7a” or simply “processed portion 7a”) may be provided.
- one floor panel is understood as one unit, and one support leg is placed at each grid point portion of the grid formed by the sides of these units Can be done.
- the planar shape of one floor panel constituting one unit is preferably square. In this case, the corners of the four floor panels are gathered at the lattice point portion of the grid formed by the sides of these units. These corners can be placed on one support leg.
- the notches 7a are provided at the four corners of the foamed cement board 1 as in the floor panel 13 shown in FIG. 3, it fits into the notches 7a and is preferably substantially the same as the surface of the top plate 5a of the floor panel 13. It becomes possible to fix to a support leg by the fixing member which becomes flush.
- a support leg that can be used in combination with such a fixing member is disclosed in Patent Document 3, for example.
- the shape of the notch 7a can be any suitable shape depending on the fixing members that can be used in combination.
- the foamed cement plate 1 may not be covered with the top plate 5a (and the bottom plate 5b).
- a further cutout for example, a step, specifically a substantially fan-shaped step
- these are collectively referred to as notches (or corner processed portions or processed portions) 7a.
- the floor panel 13 can be laid and fixed to the support leg using the notch 7a, so that the rattle can be prevented and the earthquake resistance is excellent.
- the floor panel of the present invention has a substantially square planar shape, for example, a floor panel 15 shown in FIG. May have a shape in which a further notch 7b is provided near the center of the side of the unit (see FIG. 4A).
- wiring (various wiring for telephone lines, telecommunications, power supplies, etc.) can be stored in the space formed below the floor panel by the support legs. .
- cutouts 7b are provided in the portions other than the four corners as in the floor panel 15 shown in FIG. 4, wiring can be easily inserted / removed and transferred through the cutouts 7b.
- the shape and number of the cutouts 7b are not particularly limited.
- the foamed cement board 1 may not be covered with the top plate 5a (and / or the bottom plate 5b) in the vicinity of the notch 7b.
- notch 7b may be closed with lid 9 that is substantially flush with top plate 5a of floor panel 15 (see FIG. 4B). ).
- a portion not covered with the plate of the foamed cement board 1 may be provided with a further cutout (for example, a step) according to the thickness of the lid 9, for example. .
- a further cutout for example, a step
- these are collectively referred to as a notch 7b (or processed portion 7b).
- the space formed below the floor panel 15 can be accessed using the notch 7b of the floor panel 15, so that the flexibility of wiring layout is excellent.
- the floor panel 13 (see FIG. 3) described in Modification 1 and the floor panel 15 described in Modification 2 may be used in combination.
- the floor panels 13 and 15 (see FIG. 4) have substantially the same planar dimensions, and can be understood as two types of units.
- the manufacture of the floor panel becomes easier and the inventory management thereof becomes easier.
- the floor panel 20 of the present embodiment is similar to the floor panel 10 of the first embodiment described above, and the foam cement plate 1 and the top bonded to the upper surface and the lower surface of the foam cement plate 1, respectively. It has plate 5a and bottom plate 5b.
- the floor panel 20 of the present embodiment will be described with a focus on differences from the floor panel 10 of the first embodiment, and the description of the first embodiment applies similarly unless otherwise specified.
- the edges of the top plate 5a and the bottom plate 5b extend together. More specifically, as shown in FIG. The peripheral surfaces of the cement board 1 are covered with each other.
- the floor panel 20 of the present embodiment is not limited to the form shown in FIG. 5, and at least one edge of the top plate 5 a and the bottom plate 5 b covers at least a part of the peripheral surface of the foamed cement board 1. It only has to be covered.
- the edge portion of the top plate 5a may extend to cover at least a part or all of the peripheral surface of the foamed cement plate 1.
- only the edge of the bottom plate 5b may extend to cover at least a part or all of the peripheral surface of the foamed cement board 1.
- the peripheral surface of the foamed cement plate 1 means a surface other than the upper surface and the lower surface on which the top plate 5a and the bottom plate 5b of the foamed cement plate 1 can be disposed. And corners (including the apex).
- all of the four side surfaces and the eight top portions of the foam cement board 1 are covered, but the present embodiment is not limited to such a form. Therefore, at least a part or at least one top portion of at least one side surface of the foam cement board 1 may be covered with the top plate 5a and / or the bottom plate 5b.
- each of the four side surfaces of the foam cement board 1 is covered with a top plate 5 a and a bottom plate 5 b, and four top parts on the upper surface side and four top parts on the lower surface side of the foam cement board 1 are formed.
- Each is covered with a top plate 5a and a bottom plate 5b.
- the peripheral surface (that is, the side surface and the top) of the foamed cement board 1 can be protected by being covered with the top plate 5a and the bottom plate 5b, and is generated during transportation, storage, construction, or use of the floor panel. Breakage of the foam cement board 1 can be significantly prevented.
- top plate 5a and the bottom plate 5b are respectively bonded to the upper surface and the lower surface of the foamed cement plate 1 with an adhesive, it is possible to prevent the top plate 5a and the bottom plate 5b from being displaced. Furthermore, by using the top plate 5a and the bottom plate 5b that extend from each other and face each other, it is possible to remarkably prevent the adhesive from protruding, and to further improve the appearance of the floor panel. Can do.
- the edge interval d is, for example, 1 mm to 15 mm, preferably Is from 3 mm to 10 mm.
- the top plate 5a and the bottom plate 5b shown in FIG. 5 are not particularly limited in production method.
- the above-described single metal plate is punched into any appropriate shape with a size larger than the upper surface or the lower surface of the foamed cement plate 1. Further, it can be produced by bending by press working using a conventionally known press machine or the like.
- angular part and top part of the top plate 5a and the bottom plate 5b may respectively be couple
- the floor panel 20 of this embodiment has been described in detail above.
- the floor panel 20 can achieve the same effects as the floor panel 10 of the first embodiment.
- the foamed cement plate 1 and the top plate 5a joined to the upper surface and the lower surface of the foamed cement plate 1 and A bottom plate 5b.
- the floor panel 21 can be used such that the top plate 5a is located on the front side (floor surface side) of the floor panel and the bottom plate 5b is located on the back side.
- the foamed cement board 1 similarly to the floor panel 11 of the second embodiment, the foamed cement board 1 includes fiber reinforced resin layers 4a and 4b formed on both surfaces of the foamed cement layer 3, and the fiber reinforced resin layer 4a and A top plate 5a and a bottom plate 5b are joined to 4b.
- the top plate 5a and the bottom plate 5b are the same as the floor panel 20 of the above-described third embodiment.
- the foamed cement board 1 includes the fiber reinforced resin layers 4a and 4b, so that the strength of the floor panel can be further improved.
- Embodiments 3 and 4 of the present invention have been described in detail above. Since such a floor panel is provided with a bottom plate on the back side, a free access floor can be easily configured by laying a plurality of floor panels so that the bottom plate is placed on a support leg. . In this case, for example, it can be modified as in the following example.
- the floor panels of Embodiments 3 and 4 of the present invention have a substantially square planar shape, such as a floor panel 23 shown in FIGS. 7 and 8, for example, and have a shape in which cutouts 7a are provided at the four corners, respectively. It may be a thing.
- the notches 7a formed in the top plate 5a and the bottom plate 5b can be formed by molding a metal plate by pressing or the like so as to correspond to the notches formed in the foamed cement plate 1. It should be noted that the plate is not actually manufactured by cutting or cutting the plate (hereinafter may be referred to as “corner processed portion or processed portion 7a”).
- the shape of the notch 7a can be any appropriate shape depending on the shape of the support leg and the fixing member that can be used in combination with the support leg, as in the first modification.
- the shape of the cut-out that could be formed in the top plate 5a and the bottom plate 5b can be the same, respectively, it may be different.
- FIG. 15 a combination of a support leg and a fixing member shown in FIG. 15 described in detail below may be used (more specifically, refer to FIGS. 15 to 17).
- the floor panel 23 can be laid and fixed to the support leg using the notch 7a, so that the rattle can be prevented and the earthquake resistance is excellent.
- each of the top plate 5a and the bottom plate 5b has the notch 7a having a shape corresponding to the shape of the notch provided in the foamed cement plate 1, and thus provided in the foamed cement plate 1.
- the notch can be covered and protected. Thereby, it is possible to prevent the foamed cement board 1 from being damaged during transportation, storage, construction, or use of the floor panel. In particular, it is possible to significantly prevent the foamed cement board 1 from being damaged by contact with the support leg or the fixing member.
- the floor panels of Embodiments 3 and 4 of the present invention have a substantially square planar shape, for example, a floor panel 25 shown in FIGS. 9 and 10, and are portions other than the four corners, more specifically, the floor panel. It may have a shape in which a notch 7b is further provided near the center of the side surface (see FIG. 9).
- the notch 7b that can be formed in the top plate 5a and the bottom plate 5b can be formed by pressing a metal plate by pressing or the like so as to correspond to the notch formed in the foamed cement plate 1.
- the plate is not actually manufactured by cutting or cutting the plate (hereinafter, it may be referred to as “processed portion 7b”).
- cutouts 7b are provided in the portions other than the four corners as in the floor panel 25 shown in FIG. 9, the insertion / removal of the wiring, the transfer, etc. are performed through the cutouts 7b as in the above-described modified example 2. It can be performed simply.
- the shape and number of the cutouts 7b there are no particular restrictions on the shape and number of the cutouts 7b, but when the number of cutouts 7b is one as in the floor panel 25 shown in FIG. A free access floor having a notch pattern can be easily configured. Also, by doing so, the production and management of the floor panel is greatly simplified.
- the shape of the notch 7b that can be formed in the top plate 5a and the bottom plate 5b may be the same or different.
- notch 7b may be closed with a lid that is substantially flush with the surface of top plate 5a of floor panel 25 (not shown).
- the edge of the top plate 5a extends so as to have the same area as or larger than the upper surface of the foamed cement board 1 (for example, 0 mm to 10 mm from the side surface of the foamed cement board). ), And the edge of the bottom plate 5b extends so as to cover at least a part of the peripheral surface of the foamed cement board 1 (see, for example, FIG. 11). Further, a panel 100 with a stone plate having a larger area than the top surface of the top plate 5a is disposed on the top surface of the top plate 5a.
- the panel with stone plate 100 that can be used in the fifth embodiment includes the stone plate 101 and the panel portion 102 as shown in the cross-sectional view of FIG. 11, and there is no limitation on the panel with stone plate described in the first embodiment. Can be used. Moreover, in Embodiment 5, the stone plate demonstrated in the above-mentioned Embodiment 1 may be arrange
- the edge of the stone plate or the panel with the stone plate is at a position of, for example, 10 mm to 12 mm from the side surface of the foamed cement plate.
- the top plate 5a has a larger area than the upper surface of the foamed cement board 1, thereby sufficiently supporting the stone plate or the panel with the stone board on the upper surface of the foamed cement board 1. it can.
- the stone plate or the panel with the stone plate has a larger area than the top plate 5a, and can give the floor panel 30 an excellent appearance.
- the high-strength Kana stone commercially available from the above-mentioned Kanaflex Corporation as a panel with a stone plate, not only an excellent appearance, but also a lighter weight than when using a stone plate of the same thickness (For example, weight reduction of 1/2 or less) can be achieved, and the workability is improved.
- a floor panel that can withstand a load of 5000 N or more can be provided.
- required by the normal floor panel is 3000N as above-mentioned.
- the above-mentioned adhesive can be used.
- a polyurethane resin or an epoxy resin a polyurethane resin or an epoxy resin. It is preferable to use an adhesive containing the above.
- the top plate 5a may have the same area as the upper surface of the foamed cement plate 1 as described above, or may have the same area as the stone plate or the panel with stone plates. May be.
- the bottom plate 5b extends in the same manner as in the third and fourth embodiments described above, and more specifically, bends along the shape of the bottom of the foamed cement board 1 as shown in FIG. At least a part of the peripheral surface of the foamed cement board 1 can be covered and protected.
- the edge of the bottom plate 5b preferably covers more than half of the thickness (or height) of the foam cement board 1.
- Such a configuration can remarkably prevent the foam cement board 1 from being damaged during transportation, storage, construction, or use of the floor panel.
- the foam cement board 1 is the same as that of the above-mentioned Embodiment 1, or you may use the thing similar to Embodiment 2 or 4.
- a through hole having an arbitrary shape is provided at an arbitrary location of the floor panel, preferably at the center thereof, and an outlet or an upcon (including an outlet, jack, ground, etc.) is arranged. May be.
- an upcon including an outlet, jack, ground, etc.
- the floor panel 40 of the present embodiment is basically the same as the floor panel 30 of the above-described fifth embodiment, but the edge of the bottom plate 5b is the foamed cement board 1.
- the caulking material 200 is covered together with the exposed portion of the surrounding surface (that is, the portion not covered with the bottom plate 5b), the edge of the top plate 5a, and the bottom surface of the panel portion 102 of the panel with a stone plate 100.
- the caulking material that can be used in the present embodiment is not particularly limited, and for example, a caulking material such as silicone, modified silicone, or polyurethane can be used.
- the amount of the caulking material to be used is not particularly limited as long as at least the exposed portion of the peripheral surface of the foam cement board 1 can be covered.
- a support leg 300 (which may be plural) shown in FIG. 13 can be used.
- the support leg 300 is configured such that a pedestal 301 having a cross-shaped protrusion 302 and a flange 305 are rotatably fixed by bolts 304, and the height of the pedestal 301 can be adjusted by a nut 303.
- the pedestal 301 (including the protrusion 302) can be made of resin, and the nut 303, the bolt 304, and the flange 305 can be made of metal.
- the pedestal 301 By forming the pedestal 301 from resin, the molding becomes easy. Further, since the nut 303, the bolt 304 and the flange 305 are made of metal, sufficient strength can be given to the support leg.
- the support legs 300 are arranged between the bottom plates 5 b of the floor panel 30 of the fifth embodiment (or the floor panel 40 of the sixth embodiment) adjacent to each other. It can be arranged so that the ridge 302 can be arranged. At this time, the corners of the bottom plate 5b can be arranged on the upper surface of the pedestal 301 (that is, the portion where the protrusions 302 are not present here).
- the number of adjacent floor panels is two, but normally, four floor panels are arranged so that the corners are gathered, and the center of the gathered corners is arranged. Support legs can be arranged.
- the bottom plate 5b is provided with a convex portion on the back surface near the corner portion, and a concave portion having a shape corresponding to the convex portion is formed on the upper surface of the pedestal 301 (that is, the portion where the protruding portion 302 does not exist).
- the positioning of the floor panel may be further simplified by engaging the convex portion formed on 5b with the concave portion formed on the pedestal 301.
- a metal or resin plate on the back surface near the corner of the bottom plate 5b and forming a concave portion having a shape corresponding to the plate on the upper surface of the pedestal 301, these can be engaged with each other. Moreover, you may adjust the height of the upper surface of a floor panel with this plate.
- the floor panel of Embodiment 5 and / or 6 can be spread with a certain distance from the construction surface, and the free access floor has a design with an excellent appearance based on the stone plate. Can be provided.
- one or more through holes may be provided in the flange 305 of the support leg 300, and the flange 305 may be fixed to the floor with a bolt or the like.
- the support leg which can be used for the floor panel of Embodiment 5 and 6 is not limited to what is illustrated.
- the support leg 400 shown in FIG. 15 is used in combination with the fixing member 401, and includes a pedestal 405 having a ridge 404 disposed in a cross shape and a support 406 therefor.
- the support portion 406 can be integrally fixed to the flange 409 by bolts 408 (a plurality of support portions 406).
- the height of the base 405 can be adjusted by the nut 407.
- the fixing member 401 includes the supporting column portion 402, and the supporting column portion 402 is accommodated in a sleeve portion 403 formed on the base 405 so that the height of the upper surface of the fixing member 401 can be adjusted. ing.
- the material constituting the support leg 400 is not particularly limited, but the fixing member 401 (including the column portion 402) and the base 405 (including the sleeve portion 403 and the protruding portion 404) may be made of resin,
- the pedestal support 406, nut 407, bolt 408 and flange 409 may be constructed from metal.
- the fixing member 401 and the pedestal 405 are made of resin, they can be easily molded. Further, since the support portion 406 of the base, the nut 407, the bolt 408, and the flange 409 are made of metal, sufficient strength can be given to the support leg.
- the support leg 400 is preferably applied to a floor panel having a notch 7a, such as the above-described modified examples 1 and 2, and modified examples A and B.
- the support legs 400 may be adjacent to the floor panel 23 of the modified example A (or the floor panel 25 of the modified example B, or the floor panel of the modified example 1 or 2).
- the sleeve portion 403 of the pedestal 405 is disposed in a space formed by the gathering of the cutouts 7a formed at the corner portions of the base portion 405, and the protruding portion 404 can be disposed between the adjacent bottom plates 5b.
- the corners of the bottom plate 5b can be arranged on the upper surface of the pedestal 405 (that is, the portion where the protrusions 404 do not exist here).
- the support plate portion 402 of the fixing member 401 is disposed in the sleeve portion 403 of the base 405 so that the top plate 5a can be fixed. At this time, the upper surface of the fixing member 401 is substantially flush with the upper surface of the top plate 5a as illustrated.
- the corners of the four floor panels are gathered and the support legs 400 are arranged below the center.
- the shape of the upper surface of the fixing member 401 is circular, but the shape of the upper surface of the fixing member is not limited to this shape. Further, the shape of the notch 7a formed at the corner of the floor panel is not particularly limited, and the upper surface of the fixing member 401 is preferably substantially flush with the upper surface of the top plate 5a according to the specifications of the floor panel. What is necessary is just to form suitably in such a shape.
- support legs that can be used for the floor panel having such a notch 7a are not limited to those illustrated.
- Example 1 According to the above-mentioned Embodiment 1, the floor panel was produced on the following conditions. Panel plane dimensions: 494 mm ⁇ 494 mm (however, at the four corners, the foamed cement plate was provided with a 15 mm ⁇ 15 mm isosceles triangle notch, and the top plate and the bottom plate were provided with substantially sector-shaped notches with a radius of 25 mm.
- Panel thickness 21mm
- Panel weight 6.8kg
- Top plate Hot-dip galvanized steel sheet with a thickness of 0.3 mm
- Foamed cement board Only the foamed cement layer under the following conditions
- Foamed cement layer Approximately 20 mm in thickness Specific gravity 1.2 Fiber length 4 ⁇ 35mm, thickness 10 ⁇ 100 ⁇ m
- Bottom plate Hot-dip galvanized steel plate with a thickness of 0.3 mm Bonding between top plate and bottom plate and foamed cement plate: Adhesion using epoxy resin adhesive at 250 g / m 2
- Example 1 (Evaluation) Using the floor panel of Example 1 manufactured as described above, the four corners are formed on the support legs shown in FIG. 15 (the diameter of the upper surface of the fixing member is 50 mm, the diameter of the bolts of the support legs is 12 mm, and the support leg base is 75 mm ⁇ 75 mm). Place it at a height of 100 mm from the bottom surface (70 mm x 70 mm) of the flange of the support leg to the top surface of the floor panel. Static load test, impact test, and rolling specified in JIS A 1450 “Free access floor test method” Evaluation was made according to the road test. The test conditions are as follows.
- Static load test A predetermined load of 3,000 N was used, and one unit (one floor panel) was used with the loading point as the center of the panel.
- Impact test 1 unit (one floor panel) with carpet (Sangetsu Co., Ltd. “Carpet tile NT-350” laid at the time of impact, and the impact point at the weakest part of the panel (that is, one side of the panel) (Center part).
- Rolling road test with a predetermined load of 1,000 N, 3 units (3 floor panels) in 1 row, carpet (Sangetsu Co., Ltd. “Carpet tile NT-350” was laid during loading and passed through the center of the panel in the row direction This was done with a load on the position.
- the floor panel of Example 1 had sufficient strength required for the free access floor.
- Example 2 In the same manner as in Example 1, a floor panel was produced according to the above-described Embodiment 3 under the following conditions.
- Panel plane dimensions 497 mm x 497 mm (however, at the four corners, a foamed cement board was provided with a 15 mm x 15 mm isosceles triangular notch and a substantially sector-shaped notch with a radius of 25 mm and a depth of 4 mm on the upper and lower surfaces)
- Panel thickness 21mm
- Panel weight 6.8kg
- Top plate Hot-dip galvanized steel sheet with a thickness of 0.3 mm (however, it is formed by press work in advance and has a corner machined part corresponding to the notch formed in the foamed cement board at the four corners)
- Foam cement board Only the foam cement layer of the following conditions
- Foam cement layer Thickness of about 20mm Specific gravity 1.2 Fiber length 4 ⁇ 35mm, thickness 10 ⁇ 100 ⁇ m
- Bottom plate Hot-dip galvanized steel sheet with a
- the floor panel of Example 2 had sufficient strength required for the free access floor.
- the pre-molded top plate and bottom plate can be simply left on the foamed cement plate via an adhesive during the production, so that it does not require positioning and fixing, and has excellent workability. I understood.
- the floor panel of the present invention can be used widely as an indoor or outdoor floor panel.
- the floor panel of the present invention can be suitably used particularly as a flooring material for a free access floor (so-called OA floor), but is not limited thereto.
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Abstract
Description
上記発泡セメント層は、多孔質のセメント硬化体相中に繊維を分散状態で含み、厚さ12~30mm、比重0.8~1.5であることを特徴とするフロアパネルが提供される。
図1に示すように、本実施形態のフロアパネル10は、発泡セメント板1と、この発泡セメント板1の上面および下面にそれぞれ接合されたトッププレート5aおよびボトムプレート5bとを有する。かかるフロアパネル10は、トッププレート5aがフロアパネルの表側(床面側)に位置し、ボトムプレート5bが裏側に位置するようにして使用され得る。
衝撃試験:加撃点(最弱部)に加撃体(砂袋30kg)を高さ250mmから自由落下させたときの残留変形量を測定する。
ローリングロード試験:車輪に所定荷重(例えば1,000N)を加えた状態で、列方向(最弱部を通る)に5000往復させたときの残留変形量を測定する。
静荷重試験:変形量5.0mm以下かつ残留変形量3.0mm以下
衝撃試験:残留変形量3.0mm以下
ローリングロード試験:残留変形量3.0mm以下
図2に示すように、本実施形態のフロアパネル11は、実施形態1のフロアパネル10と同様に、発泡セメント板1と、この発泡セメント板1の上面および下面にそれぞれ接合されたトッププレート5aおよびボトムプレート5bとを有する。かかるフロアパネル11は、トッププレート5aがフロアパネルの表側(床面側)に位置し、ボトムプレート5bが裏側に位置するようにして使用され得る。
本発明のフロアパネル、より詳細には実施形態1または2のフロアパネルは、例えば図3に示すフロアパネル13のように、略正方形の平面形状であって、発泡セメント板1の四隅に切り欠き7a(以下、「コーナー加工部7a」または単に「加工部7a」と呼ぶ場合もある)が設けられた形状を有するものであってよい。
また、本発明のフロアパネル、より詳細には実施形態1または2のフロアパネルは、例えば図4に示すフロアパネル15のように、略正方形の平面形状であって、四隅以外の部分、より詳細には、ユニットの辺部の中央付近(図4(a)参照)に更なる切り欠き7bが設けられた形状を有するものであってよい。
図5に示すように、本実施形態のフロアパネル20は、上述の実施形態1のフロアパネル10と同様に、発泡セメント板1と、この発泡セメント板1の上面および下面にそれぞれ接合されたトッププレート5aとボトムプレート5bとを有する。
図6の断面図に示すように、本実施形態のフロアパネル21では、実施形態2と同様に、発泡セメント板1と、この発泡セメント板1の上面および下面にそれぞれ接合されたトッププレート5aおよびボトムプレート5bとを有する。かかるフロアパネル21は、トッププレート5aがフロアパネルの表側(床面側)に位置し、ボトムプレート5bが裏側に位置するようにして使用され得る。
本発明の実施形態3および4のフロアパネルは、例えば図7および8に示すフロアパネル23のように、略正方形の平面形状であって、その四隅にそれぞれ切り欠き7aが設けられた形状を有するものであってよい。なお、本改変例において、トッププレート5aおよびボトムプレート5bに形成される切り欠き7aは、発泡セメント板1に形成した切り欠きに対応するように金属板をプレス加工等で成形して形成され得るものであり、実際にプレートを切削したり切断して作製したものではないことに留意すべきである(以下、「コーナー加工部または加工部7a)と称する場合もある)。
また、本発明の実施形態3および4のフロアパネルは、例えば図9および10に示すフロアパネル25のように、略正方形の平面形状であって、四隅以外の部分、より詳細には、フロアパネルの側面の中央付近(図9参照)に切り欠き7bが更に設けられた形状を有するものであってよい。なお、本改変例において、トッププレート5aおよびボトムプレート5bに形成され得る切り欠き7bは、発泡セメント板1に形成した切り欠きに対応するように金属板をプレス加工等で成形して形成され得るものであり、実際にプレートを切削したり切断して作製したものではないことに留意すべきである(以下、「加工部7b」と呼ぶ場合もある)。
本実施形態のフロアパネル30では、トッププレート5aの縁部が発泡セメント板1の上面と同じ面積またはそれよりも大きな面積を有するように延在し(例えば、発泡セメント板の側面から0mm~10mm)、ボトムプレート5bの縁部が発泡セメント板1の周囲面の少なくとも一部を被覆するように延在している(例えば図11参照)。また、トッププレート5aの上面には、トッププレート5aの上面よりも大きな面積を有する石板付きパネル100が配置されている。
図12の断面図に示すように、本実施形態のフロアパネル40は、基本的には上述の実施形態5のフロアパネル30と同様であるが、ボトムプレート5bの縁部は、発泡セメント板1の周囲面の露出部分(すなわち、ボトムプレート5bで覆われていない部分)と、トッププレート5aの縁部および石板付きパネル100のパネル部102の底面とともに、コーキング材200で覆われている。
実施形態5および6のフロアパネルを敷き詰めてフリーアクセスフロアを構成する場合、1枚のフロアパネルが1つのユニットとして理解され、これらユニットの辺部によって形成されるグリッドの各格子点部分に1つの支持脚が配置され得る。
上述の実施形態1に従って、下記条件にてフロアパネルを作製した。
パネル平面寸法:494mm×494mm(但し、四隅コーナーにおいて、発泡セメント板には15mm×15mmの二等辺三角形の切り欠きを設け、トッププレートおよびボトムプレートには半径25mmの略扇形の切り欠きを設けた)
パネル厚さ:21mm
パネル重量:6.8kg
トッププレート:厚さ0.3mmの溶融亜鉛メッキ鋼板
発泡セメント板:下記条件の発泡セメント層のみ
発泡セメント層:厚さ 約20mm
比重 1.2
繊維 長さ4~35mm、太さ10~100μm
ボトムプレート:厚さ0.3mmの溶融亜鉛メッキ鋼板
トッププレートおよびボトムプレートと発泡セメント板との間の接合:エポキシ樹脂系接着剤を250g/m2で使用して接着
以上のようにして作製した実施例1のフロアパネルを用いて、四隅を図15に示す支持脚(固定部材の上面の直径50mm、支持脚のボルトの直径12mm、支持脚台座75mm×75mm)に載置し、支持脚のフランジの底面(70mm×70mm)からフロアパネルの上面までの高さ100mmとし、JIS A 1450 「フリーアクセスフロア試験方法」に規定される静荷重試験、衝撃試験、およびローリングロード試験に従って評価した。試験条件は、下記の通りである。
静荷重試験:所定荷重3,000Nとし、1ユニット(フロアパネル1枚)にて、載荷点をパネル中央として実施した。
衝撃試験:1ユニット(フロアパネル1枚)にて、加撃時にカーペット(株式会社サンゲツ製「カーペットタイル NT-350」を敷設し、加撃点をパネル最弱部(すなわちパネルのいずれか一辺の中央部)として実施した。
ローリングロード試験:所定荷重1,000Nとし、3ユニット(フロアパネル3枚)1列にて、負荷時にカーペット(株式会社サンゲツ製「カーペットタイル NT-350」を敷設し、パネルの列方向中央を通る位置に負荷をかけて実施した。
実施例1と同様にして、上述の実施形態3に従って、下記条件にてフロアパネルを作製した。
パネル平面寸法:497mm×497mm(但し、四隅コーナーにおいて、発泡セメント板に15mm×15mmの二等辺三角形の切り欠きおよび上面および下面に半径25mmで深さ4mmの略扇形の切り欠きを設けた)
パネル厚さ:21mm
パネル重量:6.8kg
トッププレート:厚さ0.3mmの溶融亜鉛メッキ鋼板(但し、予めプレス加工により成形され、四隅コーナーにおいて発泡セメント板に形成した切り欠きに対応する形状のコーナー加工部を有する)
発泡セメント板:下記条件の発泡セメント層のみ
発泡セメント層:厚さ 約20mm
比重 1.2
繊維 長さ4~35mm、太さ10~100μm
ボトムプレート:厚さ0.3mmの溶融亜鉛メッキ鋼板(但し、予めプレス加工により成形され、四隅コーナーにおいて発泡セメント板に形成した切り欠きに対応する形状のコーナー加工部を有する)
トッププレートの縁部とボトムプレートの縁部との間隔d(図5b参照):約7mm
トッププレートおよびボトムプレートと発泡セメント板との間の接合:ウレタン樹脂系接着剤を250g/m2で使用して接着
以上のようにして作製した実施例2のフロアパネルを用いて、上記と同様に評価した。結果を表2に示す。
3 発泡セメント層
4a、4b 繊維強化樹脂層
5a トッププレート
5b ボトムプレート
7a、7b 切り欠き
9 蓋
10、11、13、15、20、21、23、25、30、40 フロアパネル
100 石板付きパネル
101 石板
102 パネル部
200 コーキング材
300 支持脚
301 台座
302 突条部
303 ナット
304 ボルト
305 フランジ
400 支持脚
401 固定部材
402 固定部材の支柱部
403 スリーブ部
404 突条部
405 台座
406 台座の支持部
407 ナット
408 ボルト
409 フランジ
Claims (10)
- 発泡セメント層を少なくとも含む発泡セメント板と、
前記発泡セメント板の上面および下面にそれぞれ接合されたトッププレートおよびボトムプレートと
を含むフロアパネルであって、
前記発泡セメント層は、多孔質のセメント硬化体相中に繊維を分散状態で含み、厚さ12~30mm、比重0.8~1.5であることを特徴とするフロアパネル。 - 前記トッププレートおよびボトムプレートの少なくとも一方の縁部が前記発泡セメント板の周囲面の少なくとも一部を被覆することを特徴とする請求項1に記載のフロアパネル。
- 前記トッププレートおよびボトムプレートの縁部がともに前記発泡セメント板の周囲面を互いに対向して被覆することを特徴とする請求項2に記載のフロアパネル。
- 前記トッププレートおよびボトムプレートの対向する縁部の間隔が1~15mmであることを特徴とする請求項3に記載のフロアパネル。
- 前記トッププレートが前記発泡セメント板の上面と同じ面積またはそれよりも大きな面積を有し、前記ボトムプレートの縁部が前記発泡セメント板の周囲面の少なくとも一部を被覆し、前記トッププレートよりも大きな面積を有する石板または石板付きパネルを前記トッププレートの上面に更に含むことを特徴とする請求項1に記載のフロアパネル。
- 前記トッププレートおよびボトムプレートの少なくとも一方が、厚さ0.25~1.0mmの金属板である、請求項1~5のいずれか1項に記載のフロアパネル。
- 前記トッププレートおよびボトムプレートの少なくとも一方が、それぞれ前記発泡セメント板の上面および下面に対して接着剤により接着されている、請求項1~6のいずれか1項に記載のフロアパネル。
- 前記接着剤が、塩素化ポリオレフィン樹脂、ポリウレタン系樹脂、エポキシ系樹脂、アクリル系樹脂、ビニル系樹脂、酢酸ビニル系樹脂、ポリエステル系樹脂、エチレン-酢酸ビニル共重合体樹脂、アクリル酢酸ビニル共重合体樹脂、ポリアミド系樹脂、およびアイオノマー樹脂からなる群より選択される少なくとも1種の樹脂を含む、請求項1~7のいずれか1項に記載のフロアパネル。
- 前記接着剤が、150~500g/m2で使用されている、請求項1~8のいずれか1項に記載のフロアパネル。
- 前記発泡セメント板が、前記発泡セメント層の少なくとも片面に形成された繊維強化樹脂層を更に含む、請求項1~9のいずれか1項に記載のフロアパネル。
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JP2014521770A JP5687393B2 (ja) | 2013-01-21 | 2014-01-20 | フロアパネル |
US14/761,687 US9944050B2 (en) | 2013-01-21 | 2014-01-20 | Floor panel |
CN201480005356.2A CN104937190B (zh) | 2013-01-21 | 2014-01-20 | 地板面板 |
HK15111883.0A HK1211066A1 (en) | 2013-01-21 | 2015-12-03 | Floor panel |
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JP (1) | JP5687393B2 (ja) |
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US11634911B2 (en) * | 2018-02-09 | 2023-04-25 | Nantong Cimc Eco New Material Development Co., Ltd | Floor board |
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Also Published As
Publication number | Publication date |
---|---|
JPWO2014112629A1 (ja) | 2017-01-19 |
HK1211066A1 (en) | 2016-05-13 |
CN104937190B (zh) | 2017-06-09 |
US20150360443A1 (en) | 2015-12-17 |
US9944050B2 (en) | 2018-04-17 |
CN104937190A (zh) | 2015-09-23 |
JP5687393B2 (ja) | 2015-03-18 |
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