JP6514007B2 - Construction method of fixing structure of ceiling material - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a ceiling structure fixing structure and a construction method capable of easily constructing a lightweight ceiling material.

BACKGROUND Conventionally, flame retardant panels made of gypsum board have been used as ceiling materials for general houses and public buildings. However, at the time of the earthquake, the panel made of gypsum board was heavy, and the board itself could be cracked or dropped due to strong shaking.
As a weight reduction thereof, a ceiling material using organic fibers or inorganic fibers has been proposed (see, for example, Patent Document 1).
However, ceiling materials using organic fibers or inorganic fibers are usually low in rigidity, difficult to handle, and poor in workability.

Utility model registration 3185894 gazette

  The present invention has been made in view of the above-mentioned background, and an object of the present invention is to provide a fixing structure and a construction method of a ceiling material capable of easily applying a lightweight ceiling material.

  As a result of intensive investigations to achieve the above object, the inventor has found that a ceiling material is fixed to a vertical plate portion to a ceiling rail having a vertical plate portion and a bottom plate portion, and further studies are repeated. The invention has been reached.

Thus, according to the present invention, “a ceiling comprising a ceiling rail having a vertical plate portion and a bottom plate portion and a ceiling material, and fixing the ceiling material directly or indirectly to the vertical plate portion Method of fixing structure of a material , wherein the elastic body is joined to the L-shaped member, the L-shaped member is joined to the vertical member, then the ceiling material is placed on the elastic body, and then the L-shaped member is present Method of tacking the ceiling material to the elastic body at a position different from the position where
At that time, it is preferable to pre-Symbol elastic body made of a resin composition or rubber composition. In addition, the ceiling material is a composite fiber structure formed by laminating a non-combustible sheet on at least one surface or the inside of a fiber structure including main fibers and binder fibers, and the thickness can be reduced by compressing in the thickness direction. It is preferred to have a reduced point. Moreover, in the said ceiling material, it is preferable that thickness is 10 mm or less. Further, in the ceiling material, it is preferable that the tensile strength per 1 cm width is 1200 N or more in both the vertical direction and the horizontal direction . Also, it is preferred that the total weight of the ceiling rail and the ceiling material is 2 kg / m ² or less. Further, it is preferable that the fixed structure all of the total weight of the ceiling material is 2 kg / m ² or less.

  ADVANTAGE OF THE INVENTION According to this invention, the fixed structure and construction method of a ceiling material which can construct a lightweight ceiling material easily are obtained.

It is a figure which shows a part of fixing structure of the ceiling material of this invention. It is a figure which shows a part of fixing structure of the ceiling material of this invention.

Hereinafter, although the fixing structure of the ceiling material of this invention is demonstrated in detail using FIG.1 and FIG.2, this invention is not limited to these.
First, the fixing structure of the ceiling material of the present invention includes a ceiling rail and a ceiling material, and the ceiling rail has a vertical plate portion and a bottom plate portion. Further, the ceiling material is directly or indirectly connected to and fixed to the vertical plate portion.
At that time, it is preferable that the ceiling material is fixed to the vertical plate portion via a member having a cross-sectional shape including the letter “L” (hereinafter also referred to as “L-letter member”).

The material of the L-shaped member is not particularly limited, but may be a metal plate having a thickness of 2 mm or less (preferably 0.5 to 1.5 mm) in terms of workability and stability of fixing the ceiling material. preferable. At that time, as a material of the metal plate, stainless steel, aluminum, duralumin, steel surface plated, etc. are preferable. The dimensions are preferably in the range of 10 to 40 mm in width, 10 to 40 mm in depth, and 10 to 40 mm in height.
The method of fixing the L-shaped member to the vertical plate portion is not particularly limited, and any of physical method and chemical bonding method may be used. In particular, in order to form a fixed structure which can be easily installed and which is strong, screwing as schematically shown in FIG. 1 is preferable.
Moreover, in order to construct easily, it is preferable that the elastic body interposes between the said ceiling material and the said L-shaped member.

The material of the elastic body is preferably made of a resin composition or a rubber composition having a low bending resistance so as to facilitate bonding with a ceiling material. As the resin composition, olefin-based resins such as polyethylene resin, polypropylene resin, polyvinyl chloride resin and the like have low bending resistance, and polyvinyl chloride resin is preferable in particular from the viewpoint of flame retardancy. Examples of the rubber composition include a general natural rubber, a diene rubber represented by styrene butadiene rubber, a silicone rubber excellent in durability, a fluorine rubber and the like.
The method for fixing such an elastic body to the L-shaped part is not particularly limited, and any physical method or chemical bonding method may be used. In particular, in order to form a fixed structure which can be easily installed and which is strong, screwing as schematically shown in FIG. 1 is preferable.
Further, the method of fixing such an elastic body to the ceiling material is not particularly limited, and any of physical method and chemical bonding method may be used. In particular, a tacker stop is preferable in order to provide a fixed structure that is easy to install and secure.

In the present invention, the ceiling material is a composite fiber structure formed by laminating a non-combustible sheet on at least one surface or inside of a fiber structure including main fibers and binder fibers, and the thickness is obtained by compressing in the thickness direction. It is preferable to have a portion having a reduced strength because of its excellent rigidity and appearance and handling, non-combustibility, heat insulation and sound absorption.
Here, the place of reduced thickness is not particularly limited, but in order to improve the rigidity and appearance, the place of reduced thickness is located around and / or inside the ceiling material in the plan view. Is preferred. More specifically, for example, as shown in FIG. 4 (A) of utility model registration 3185894, a case where the compression portion is disposed around the ceiling material (that is, the edge of the four sides), FIG. As shown in FIG. 4 (C) and FIG. 4 (D), the compression section is opposed from the periphery and one side of the ceiling material as shown in FIG. 4 (C) and FIG. 4 (D). The example etc. arrange | positioned in stripe form to the edge | side etc. are illustrated suitably.

Further, in the side view (the sectional view of the ceiling material cut in the thickness direction), the portion where the thickness is reduced by compression in the thickness direction is shown in FIG. 5 (A of utility model registration 3185894). It may be unevenly distributed on one surface side as shown in), or may be located at the center with respect to the thickness direction as shown in FIG. 5 (B). Furthermore, in the case where a plurality of portions where the thickness is reduced is disposed, all of the portions may be unevenly distributed on one surface side as shown in FIG. 5 (C).
The material constituting the ceiling material is not particularly limited, and any of synthetic fibers such as glass wool, rock wool, polyester fibers, nylon fibers, aramid fibers and the like may be used. Among them, a structure in which incombustible sheets are laminated on at least one surface or the inside (preferably, both front and back surfaces) of a fiber structure containing main fibers and binder fibers is preferable in terms of rigidity, flame retardancy, and lightness. .

  The fibers usable as the main fibers are not particularly limited, but polyester short fibers are preferable in terms of durability, cost and the like. As polyester-based short fibers, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polyhexamethylene terephthalate, polytetramethylene terephthalate, poly-1,4-dimethylcyclohexane terephthalate, polyethylene naphthalate, polypivalolactone, polylactic acid (PLA), stereocomplex polylactic acid, polyester-based or bio-based polyester, or short fibers comprising these ester esters, mixed fibers of these fibers, or composite fibers comprising two or more of the above polymers, etc. It is preferably exemplified. The cross-sectional shape of the staple fibers may be circular, flat, irregular or hollow. In particular, staple fibers made of polyethylene terephthalate or a copolymer thereof are preferable. Of course, material recycled or chemically recycled polyethylene terephthalate may be used. Moreover, the polyethylene terephthalate formed using the monomer component obtained by using a biomass, ie, the substance derived from a living thing, as a raw material described in Unexamined-Japanese-Patent No. 2009-091694 may be sufficient. Furthermore, polyesters obtained using a catalyst containing a specific phosphorus compound and a titanium compound as described in JP-A-2004-270097 and JP-A-2004-211268 may be used.

Also, the main fibers are polyamides such as nylon 6, nylon 66, etc., other polyolefins, synthetic fibers such as acrylic, modacrylic, para-type or meta-type aramid fibers, carbon fibers, glass fibers, inorganic fibers such as rock wool, rayon , Natural fibers (silk, cotton, hemp, wool, etc.) or miscellaneous cotton.
The main fibers may be not only fibers consisting of a single polymer but also composite fibers such as side-by-side type and core-sheath type. Moreover, the fiber which added the flame retardant, and a profile cross-section fiber may be sufficient. The main fibers may be one type or a combination of plural types.
In the main fiber, the single fiber fineness is preferably 1 dtex or more (more preferably 1 to 30 dtex, particularly preferably 6 to 10 dtex) in order to obtain excellent rigidity. If the single fiber fineness is smaller than 1 dtex, the rigidity of the ceiling material may be reduced.

Moreover, it is preferable that a crimp is provided in the said main fiber. At that time, the number of crimps is preferably 4 to 25 / 2.54 cm, and the crimp degree is preferably 20 to 40%. If the number of crimps and the degree of crimp are smaller than the above range, the bulk of the web may be difficult to form or the web may be difficult to form. On the other hand, if the number of crimps and the degree of crimp are larger than the above range, the entanglement of fibers becomes strong at the time of forming a web, and defects such as streaky unevenness may occur.
In the main fiber, the fiber length is preferably 5 mm or more (more preferably 30 to 100 mm). If the fiber length is less than 5 mm, sufficient rigidity may not be obtained. On the contrary, if the fiber length is larger than 100 mm, the process stability may be impaired.
In the fiber structure, the weight ratio of the main fiber to the binder fiber is 95/5 to 5
The bonding point is mixed so as to be / 95, and the bonding point heat-sealed in a state where the binder fibers cross each other and / or the bonding point heat-sealed in a state where the binder fiber and the main fiber cross each other are It is preferable that it is a fiber structure which is scattered.

The binder fiber for fusing the main fibers may be a fiber consisting of a single component, but a low melting heat-sealing component having a melting point lower by 40 ° C. or more than the melting point of the main fibers is at least partially on the fiber surface. It is preferable that they are short fibers distributed, and heat-adhesive composite short fibers which can melt at least a part of the surface by heating. If the melting point difference is less than 40 ° C., the processing temperature approaches the melting point of the main fiber, and the physical properties of the main fiber may be reduced, or the shrinkage during molding may be large.
Here, as a polymer to be disposed as a heat fusion component, a polyurethane elastomer,
Polyester elastomers, non-elastic polyester polymers and copolymers thereof, polyolefin polymers and copolymers thereof, polyvinyl alcohol polymers and the like can be mentioned.

As polyurethane elastomers, low melting point polyols having a molecular weight of about 500 to 6000, such as dihydroxy polyethers, dihydroxy polyesters, dihydroxy polycarbonates, dihydroxy polyester amides, etc., and organic diisocyanates having a molecular weight of 500 or less, such as p, p'-diphenylmethane Diisocyanate, tolylene diisocyanate, isophorone diisocyanate, hydrogenated diphenylmethane isocyanate, xylylene isocyanate, 2,6-diisocyanatomethylcaproate, hexamethylene diisocyanate, etc., a chain extender having a molecular weight of 500 or less, such as glycol amino alcohol or triol A polymer obtained by the reaction of

Also, as polyester-based elastomers, polyether ester copolymers obtained by copolymerizing thermoplastic polyesters as hard segments and poly (alkylene oxide) glycols as soft segments, more specifically terephthalic acid, isophthalic acid, phthalic acid Alicyclic dicarboxylic acids such as naphthalene-2,6-dicarboxylic acid, naphthalene-2,7-dicarboxylic acid, diphenyl-4,4'-dicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, succinic acid, oxalic acid, 1,4-butanediol, ethylene glycol trimethylene glycol, at least one dicarboxylic acid selected from aliphatic dicarboxylic acids such as adipic acid, sebacic acid, dodecanedioic acid, dimer acid, etc. or ester forming derivatives thereof Tetramethylene glycol, pe Aliphatic diols such as pentamethylene glycol, hexamethylene glycol neopentyl glycol, decamethylene glycol or alicyclic diols such as 1,1-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, tricyclodecanemethanol or the like At least one diol component selected from ester forming derivatives and the like, and polyethylene glycol having an average molecular weight of about 400 to about 5,000, poly (1,2- and 1,3-polypropylene oxide) glycol, poly (tetramethylene oxide) 3) at least one selected from poly (alkylene oxide) glycols such as glycol, a copolymer of ethylene oxide and propylene oxide, and a copolymer of ethylene oxide and tetrahydrofuran It can be mentioned copolymers.

Particularly, from the viewpoint of adhesion, temperature characteristics and strength, block copolymerized polyether esters having polybutylene terephthalate as a hard component and polyoxybutylene glycol as a soft segment are preferable. In this case, the polyester portion constituting the hard segment is polybutylene terephthalate in which the main acid component is terephthalic acid and the main diol component is the butylene glycol component. Of course, part of this acid component (usually less than 30 mol%)
May be substituted with another dicarboxylic acid component or an oxycarboxylic acid component, and similarly, a part (usually 30 mol% or less) of the glycol component may be substituted with a dioxy component other than the butylene glycol component. Also, the polyether portion constituting the soft segment may be a polyether substituted with a dioxy component other than butylene glycol.

Copolyester-based polymers include aliphatic dicarboxylic acids such as adipic acid and sebacic acid, aromatic dicarboxylic acids such as phthalic acid, isophthalic acid and naphthalenedicarboxylic acid, and / or fats such as hexahydroterephthalic acid and hexahydroisophthalic acid A co-polycarbonate containing a predetermined number of cyclic dicarboxylic acids and aliphatic or alicyclic diols such as diethylene glycol, polyethylene glycol, propylene glycol and paraxylene glycol, and optionally adding an oxyacid such as parahydroxybenzoic acid Polymeric esters and the like can be mentioned, for example, isophthalic acid and 1,6 in terephthalic acid and ethylene glycol
-Polyester etc. which carried out addition copolymerization of hexanediol can be used.
Moreover, as a polyolefin polymer, low density polyethylene, high density polyethylene, a polypropylene etc. can be mentioned, for example.
In the polymer described above, various stabilizers, ultraviolet light absorbers, thickening / branching agents, matting agents, coloring agents, other various improving agents, etc. may be blended as necessary.

In the heat-adhesive composite staple fiber, the non-elastic polyester as described above is preferably exemplified as the counterpart component of the heat-fusion component. At that time, it is preferable that the heat sealing component occupies at least a half of the fiber cross-sectional surface area. The weight ratio is preferably in the range of 30/70 to 70/30 in terms of the composite ratio of the heat-fusion component and the nonelastic polyester. The form of the heat-adhesive composite staple fiber is not particularly limited, but the heat-fusion component and the non-elastic polyester are preferably a side-by-side type and a core-sheath type, more preferably a core-sheath type. In this core-sheath type heat-adhesive composite short fiber, the non-elastic polyester is the core and the heat sealing component is the sheath, but the core may be concentric or eccentric.

In such a binder fiber, the single fiber fineness thereof is preferably 0.5 to 10 dtex (more preferably 1 to 3 dtex).
In the binder fiber, the fiber length is preferably 5 mm or more, more preferably 30 to 100 mm. If the fiber length is less than 5 mm, sufficient rigidity may not be obtained. On the contrary, if the fiber length is larger than 100 mm, the process stability may be impaired.

The main fiber and the binder fiber are mixed and heat-treated to obtain a bonding point at which the binder fibers are heat-sealed in a cross state and / or heat in a state where the binder fiber and the main fiber cross. A fibrous structure is formed in which the fused adhesion points are interspersed.
At that time, the weight ratio of main fiber to binder fiber is (main fiber / binder fiber) 95
/ 5 to 5/95 (more preferably 95/5 to 60/40). When the ratio of the binder fiber is less than this range, the fixing point is extremely reduced, and there is a possibility that the fiber structure has no stiffness and the form retention becomes difficult. On the other hand, when the ratio of the binder fiber is larger than this range, the number of adhesion points is increased, the adhesion becomes too strong, and the cuttability may be lowered.

In the fiber structure, when the main fibers and the binder fibers are arranged in the thickness direction of the fiber structure, the incombustible sheet is laminated to form a cardboard structure, which is preferable because the lightness and rigidity are improved. For example, when a fiber having a small single fiber fineness is used as the main fiber in order to enhance sound absorption, the effect becomes remarkable.
Here, “arranged in the thickness direction” means the total number of fibers arranged in parallel to the thickness direction of the fiber structure as (B), and in the thickness direction of the fiber structure B / A is 1.5 or more when the total number of fibers arranged vertically to the opposite is taken as (A).

There is no particular limitation on the method of producing such a fiber structure, and a conventionally known method may be arbitrarily adopted. For example, main fibers and binder fibers are mixed and spun as a uniform web by a roller card. Then, using a heat treatment machine as shown in FIG. 1 of JP-A-2008-68799, the web is heat-treated while being accordion-folded to form a fixing point by heat fusion, and the like. . For example, JP 2002-516932
It is preferable to use an apparatus disclosed in the official gazette (in the market, for example, Struto equipment manufactured by Struto).
The density of the fiber structure is preferably in the range of 10 to 200 kg / m ³ . If the density is less than 10 kg / m ³ , the rigidity may be reduced. On the other hand, if the density is more than 200 kg / m ³ , the hardness of the fiber structure becomes too high, and not only the cuttability becomes difficult but also the lightness may be impaired.

Moreover, as thickness of the said fiber structure, it is preferable to exist in the range of 2-40 mm. If the thickness is smaller than 2 mm, the rigidity may be reduced. On the other hand, if the thickness is larger than 40 mm, the handleability may be reduced when attaching the ceiling material, and a space problem may occur.
Moreover, as a fabric weight of the said fiber structure, 600 g / m < ² > or less (more preferably 100-
It is preferable that it is 600 g / m < ² >. If the fabric weight is larger than 600 g / m ² , the lightweight of the ceiling material may be impaired.

When laminating a noncombustible sheet to the above-mentioned fiber structure, as such a noncombustible sheet, one satisfying the evaluation criteria described in the Building Standard Act Enforcement Order (final revision: March 30, 2011 Decree 46) Inorganic fiber sheets and metal sheets are preferable, particularly in view of flame retardancy and lightness.
Here, as the inorganic fiber sheet, for example, woven or knitted fabric or non-woven fabric made of glass fiber, carbon fiber, rock wool or the like is exemplified. Further, as the metal sheet, iron, aluminum, copper, stainless steel, titanium, aluminum-zinc alloy plated steel plate, enamel steel plate, clad steel plate, laminated steel plate (polyvinyl chloride steel plate etc.), sandwich steel plate (vibration damping steel plate etc.) etc. An example of one type of color metal plate coated in various color tones is formed into a sheet by roll forming, press forming, extrusion forming or the like.

The metal sheet is preferably obtained by rolling and stretching a common metal foil. In this case, the thickness is 5 to 10 in consideration of strength, economy, and workability at the time of use as a wall material.
It is preferable to be in the range of 0 μm. If the thickness is less than 5 μm, there is a possibility that the problem of tearing during operation may occur because the thickness is thin. Conversely, if the thickness is greater than 100 μm,
The rigidity becomes too large and it becomes difficult to bend along the R portion of the wall or ceiling, and there is a possibility that the workability such as the insertability at the time of use and the mold followability to the floor, wall and roof may be deteriorated.

As a method of laminating the incombustible sheet on the fibrous structure, a method of laminating the incombustible sheet from the upper surface or the lower surface of the fibrous structure after producing the fibrous structure, and heating and pressing with a roll or a belt is preferable. At that time, the fibrous structure and the incombustible sheet are adhered by remelting of the heat-adhesive short fibers contained in the fibrous structure, but a powdery or non-woven adhesive is used in combination or as a substitute to further improve the adhesive strength. It is also possible.

In addition, the fiber structure may be sliced by a slicer facility or the like substantially perpendicular to the thickness direction or slightly obliquely if necessary, and the sheet material may be bonded to the sliced cut surface. By thus bonding the sheet-like material to the cut surface of the fiber structure,
Since the cut surface of the fiber structure is flat, the surface of the sheet-like material after bonding is also flat. Furthermore, when the fibers are arranged in the thickness direction, the friction with the fibers contained in the fiber structure is also increased, and the bonding becomes easy.
When bonding the noncombustible sheet to the fiber structure, a plurality of sheets may be bonded not only to one side of the fiber structure but also to a plurality of surfaces (for example, both sides of the fiber structure) and the inside of the fiber structure. I am sorry.

The ceiling material is obtained by partially compressing the composite fiber structure in the thickness direction.
At that time, the method of compression is not particularly limited, and examples thereof include a method of compression at normal temperature and heat compression. In particular, in the case of using a binder fiber as described later, heat compression at a temperature higher than the melting point (or softening point) of the binder fiber is preferable because the rigidity of the ceiling material is further improved. At that time, the method of heating and compressing is not particularly limited, and a method using a common hot press may be used.
Moreover, it is preferable that the width | variety of a compression part is 5-25 mm. Also, the thickness of the compression section is 0.2
It is preferable that it is -1.5 mm.

Here, as a flame retardant, a corn calorimeter is used, and ISO 5660-Fir is used.
e test-Reaction to fire / Part 1: Heat releas
The maximum heat generation rate is 10 when the fire resistance test is performed according to se (building material test information 1099, 39 to 41) and the surface of the composite fiber structure is irradiated with 50 kW / m ² of radiant heat from the radiant electric heater for 20 minutes. It is preferable not to exceed 200 kW / m ² continuously for more than a ^second . In addition, when the same fire test is conducted, 50 kW / m ² from the radiant electric heater to the surface of the composite fiber structure.
It is preferable that total calorific value is 8 MJ / m < ² > or less, when 20 minutes of radiant heat is irradiated. Also, when a similar fire test is conducted, 50 kW from the radiant electric heater to the surface of the composite fiber structure
It is preferable that no crack or hole penetrating to the back surface occurs when irradiated with radiant heat of 20 m ² for 20 minutes.

In addition, using a test piece of 50 mm (width) x 150 mm (length) size as the rigidity, measure the maximum bending strength at a bending speed of 10 mm / min with a span of 100 mm. It is preferably 3N / 5 cm or more (more preferably 3 to 30 N / 5 cm).
The ceiling material preferably has a thickness of 10 mm or less (preferably 1 to 10 mm). Further, in the ceiling material, it is preferable that the tensile strength per 1 cm width is 1200 N or more in both the vertical direction and the horizontal direction.
The ceiling material may be subjected to ordinary dyeing processing and raising processing. Furthermore, known functional processing such as water repelling processing, flameproof processing, flame retardant processing, negative ion generation processing may be added. Furthermore, an additive such as another sheet may be added as appropriate.

Next, the construction method of the ceiling rail which fixed the ceiling material is described. The ceiling rail is arranged in a lattice, and the ceiling material is arranged in each lattice, and the ceiling material fixed to the vertical plate portion and the ceiling material not fixed to the vertical plate portion exist It is preferable to adopt a fixed structure.
By having the ceiling material not fixed to the vertical plate portion, it is easy to secure an inspection port and the like. Furthermore, it is preferable that a ceiling material fixed to the vertical plate portion and a ceiling material not fixed to the vertical plate portion be arranged in a checkered pattern. Since the number of ceiling materials fixed by arranging in a checkered pattern is about half of the total number of ceiling materials, the workability and cost can be remarkably improved. There is no possibility of lowering the surface rigidity by arranging it in a checkered manner.

In addition, as a construction method of the fixing structure of the ceiling material, the elastic body is joined to the L-shaped member, the L-shaped member is joined to the vertical member, and then the ceiling material is placed on the elastic body, and then the ceiling material The construction method of tacking to the elastic body is preferable.
In the present invention, the total weight of the ceiling rail and the ceiling material is preferably ² kg / m ² or less. In particular, it is preferable that the total weight of all the fixed structures of the ceiling material is 2 kg / m ² or less. If the total weight of the ceiling rail and ceiling material, the hanging hanger for hanging material, and the fixture and screw for forming the ceiling rail in a grid shape is 2 kg / m ² or less (Ministry of Land, Infrastructure, Transport and Tourism) Ceiling weight as defined in Notice 771) is preferred.
Since the ceiling material fixing structure of the present invention has the above-described structure, it is possible to easily apply a lightweight ceiling material.

  EXAMPLES The present invention will next be described in detail by way of examples, which should not be construed as limiting the invention thereto. In addition, each measurement item in an Example was measured by the following method.

(1) Melting point Measurement was carried out at a temperature rise of 20 ° C./min using a thermal differential analyzer 990 manufactured by Du Pont Co., Ltd. to obtain a melting peak. When the melting temperature is not clearly observed, a temperature at which the polymer softens and starts to flow (softening point) is defined as the melting point, using a micro melting point measuring apparatus (manufactured by Yanagimoto Seisakusho). Note that
The average value was calculated by n number 5.

(2) B / A
The fiber structure is cut in the thickness direction, and the total number of fibers (0 ° ≦ θ ≦ 45 ° in FIG. 2) arranged in parallel to the thickness direction in the cross section (B), and the B / A was calculated with the total number of fibers (45 ° <θ ≦ 90 ° in FIG. 2) arranged perpendicularly to the thickness direction of the fiber structure as (A). . In the measurement of the number of fibers, 30 fibers were observed with a transmission type optical microscope at arbitrary 10 points, and the numbers were counted.

(3) Flame retardancy Using a corn calorimeter, ISO 5660-Fire test-Reaction to fire / Part 1: Heat release (building material test information 10)
Fire tests were conducted according to '99, 39-41). At that time, the surface of the composite fiber structure was irradiated with 50 kW / m ² of radiant heat from the radiant electric heater for 20 minutes.

(4) Thickness of fiber structure (cm)
Measured according to JIS K6400.

(5) Density of fiber structure (g / cm ³ )
The density (g / cm ³ ) was determined by the following equation.
Density (g / cm ³ ) = weight of web (g / cm ² ) / thickness of fiber structure (cm)

(6) Single fiber diameter (μm)
It expanded 350 times with the electron microscope, the single fiber diameter was measured by n number 10, and the average value was computed.

(7) Rigidity (bending strength)
The maximum bending strength was measured at a bending speed of 10 mm / min with a span of 100 mm using a test piece with a size of 50 mm (width) × 150 mm (length) according to JIS K7203 to obtain rigidity (N / 5 cm). .

(8) Heat insulation Measured according to JIS A-1412.

Example 1
60% by weight of polyethylene terephthalate (PET) short fibers (single fiber fineness 6.6 dtex, fiber length 51 mm, crimp number 9 / 2.54 cm) as main fibers 60% by weight Teijin as heat-adhesive short fibers ( Co., Ltd. Copolymerized polyethylene terephthalate staple fiber (single fiber fineness 2.2 dtex, fiber length 51 mm, crimp number 11 / 2.54 cm) 40% by weight is opened and mixed, and then carding of non-woven fabric manufacturing equipment, cloth After the layering, a Struto facility manufactured by Struto (similar to the apparatus disclosed in JP-A-2002-516932) was used to produce a nonwoven fabric in which the fibers were arranged in the thickness direction. Subsequently, heat treatment is applied at 140 to 200 ° C. from both sides of the sample, and the nonwoven fabric is further compressed with a roller at the exit of the heat treatment zone to adjust the thickness to adjust the thickness to a fiber structure of 240 g / m ² and 20 mm thickness. Obtained.

Next, a non-woven fabric made of a low melting point polyester resin with a basis weight of 12 g / m ² is laminated as an adhesive on both the front and back sides of the fiber structure, and further, a glass cloth H201 manufactured by Unitika Glass Fiber Co., Ltd. 42/25 mm, 32/25 mm, thickness: 0.17 mm, weight: 210 g / m ² ) are laminated on both surfaces, heated and compressed with a heat roller, and laminated, 4 mm thick composite fiber structure I got a body.
Then, using the composite fiber structure, a ceiling material was obtained by heat compression at a temperature of 180 ° C. so as to have a width of 10 mm and a thickness of 1 mm. The tensile strength per 1 cm width of the obtained ceiling material is 1400 N in the vertical direction, 1650 N in the horizontal direction, and heat insulation (heat conductivity 0.033 W / m · K). Such a ceiling material is excellent in rigidity and appearance and handling, noncombustibility, heat insulation and sound absorption.

On the other hand, ceiling rails having vertical plate portions and bottom plate portions as described below were arranged in a grid of 910 mm × 910 mm in size.
Vertical plate: 1 mm thick aluminum alloy. 45 mm in height. As the upper holding portion, it has a rib-like member having a width of 7 mm downward at the top and at a position 8 mm from the top.
Bottom plate: 1 mm thick aluminum alloy. It has a rib of 20 mm in width and 5 mm in height at both ends, and has a rail-like rib of 7 mm in width at the center.
The vertical plate portion and the bottom plate portion have an integral structure by pultrusion.
Subsequently, the ceiling material which is not fixed to the grid part of the lattice and the ceiling material which is fixed are arranged in a checkered pattern by the following construction method (the ceiling material is arranged in all the squares). . At that time, the fixed ceiling material was fixed by the following construction method.

(Construction method of fixed ceiling material)
As shown in FIG. 1, the elastic body was joined to the L-shaped member with a screw B, and the L-shaped member was joined to the vertical member with a screw A. Next, the ceiling material was placed on the elastic body. Next, as shown in FIG. 2, the ceiling material was tacked to the elastic body at a position different from the position where the L-shaped member exists. In FIG. 1, the tucker is not shown. In FIG. 2, the L-shaped member, the screw A, and the screw B are not illustrated.
The material and dimensions of each part were as follows.
L-shaped member: An aluminum “L” -shaped member having a thickness of 1.2 mm, a height of 20 mm, a depth of 10 mm, and a width of 20 mm was used. It used two places (a total of eight places) in one side per one ceiling material.
Elastic body: A 1 mm thick resin H-type joiner made of polyvinyl chloride resin was used as the elastic body.
With such a fixed structure, it was possible to easily construct a lightweight ceiling material.

  ADVANTAGE OF THE INVENTION According to this invention, the fixed structure and construction method of a ceiling material which can apply a lightweight ceiling material easily are obtained, The industrial value is very large.

1: ceiling rail 2: ceiling material 3: vertical plate 4: bottom plate 5: L-shaped member 6: elastic body 7: screw A
8: Bis B
9: Tucker

Claims (7)

A construction method of a fixing structure of a ceiling material, comprising: a ceiling rail having a vertical plate portion and a bottom plate portion; and a ceiling material, wherein the ceiling material is fixed directly or indirectly to the vertical plate portion. And bonding the elastic body to the L-shaped member, bonding the L-shaped member to the vertical member, then placing the ceiling material on the elastic body, and then at a position different from the position where the L-shaped member is present, The construction method of tacking ceiling material to an elastic body . The construction method of the fixing structure of the ceiling material according to claim 1 , wherein the elastic body is made of a resin composition or a rubber composition. The ceiling material is a composite fiber structure formed by laminating a non-combustible sheet on at least one surface or inside of a fiber structure containing main fibers and binder fibers, and the thickness is reduced by compressing in the thickness direction The installation method of the fixing structure of the ceiling material of Claim 1 or Claim 2 which has the following point. The said ceiling material, The construction method of the fixing structure of the ceiling material in any one of Claims 1-3 whose thickness is 10 mm or less. The method of installing a fixing structure for a ceiling material according to any one of claims 1 to 4 , wherein in the ceiling material, the tensile strength per 1 cm width is 1200 N or more in both the vertical direction and the horizontal direction. The total weight of the ceiling rail and the ceiling material is 2 kg / m ² or less, the construction method of the fixed structure of the ceiling material of any of claims 1-5. Fixing structure all of the total weight of the ceiling material is 2 kg / m ² or less, the construction method of the fixed structure of the ceiling material of any of claims 1-6.

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