JP6531316B2 - Sound absorbing film - Google Patents

Description

  The present invention is a ceiling-area-constituting membrane material (membrane ceiling) and sound-absorbing membrane material installed on the ceiling of indoor stadiums, gymnasiums, indoor pools, event halls, public halls, ceremonial occasions, station buildings, airports, shopping malls, etc. Equipped with non-combustibility according to Building Standard Law as a ceiling accessory (air film), it has lightness and flexibility that is unlikely to cause serious human damage even if the ceiling falls in case of earthquake disaster In particular, the present invention relates to a film material which is excellent in sound absorption effect without uneven distribution to general noise in general, and which can be applied to partitions, blinds, sunshade tents and the like besides ceiling applications.

  Patent Document 1 discloses a double woven glass cloth having an aperture ratio of 0.02 to 1.0% in which a bulkless glass fiber yarn and a bulky processed glass fiber yarn are used in combination at a specific ratio as a film ceiling glass membrane. Are disclosed, and are described as being nonflammable and light shielding, and particularly excellent in sound absorption in a low frequency region (human voice). In the glass cloth for membrane ceiling of Patent Document 1, the sound absorbing effect against noise in the high frequency region is particularly insufficient, and therefore, the membrane cloth for membrane ceiling which is excellent in the sound absorbing effect without uneven distribution with respect to noise in general and noncombustible It is desired.

Patent No. 5641168

  The present invention is provided with fire resistance according to the Building Standard Law as a ceiling area constituting film material (film ceiling) and sound absorbing film material installed on the ceiling of a building, or a ceiling accessory (air film), and is prepared for earthquake disasters It has lightness and flexibility that is unlikely to cause serious human damage even if the ceiling collapses, and it is excellent in sound absorption without being unevenly distributed especially to noise in general, and is further directed by lighting and image projection It is also possible to construct indoor stadiums, gymnasiums, indoor pools, event halls, public halls, ceremonial occasions, station buildings, airports, shopping malls, etc. for film ceiling construction, for light ceiling film construction, and even partitions and blinds An object of the present invention is to provide a sound absorbing film material applicable to sunshade tents and the like.

  In order to solve the above problems, in a woven fabric containing resin-coated yarns and multifilament yarns in a woven / knitted element, the woven / knitted elements having different specific gravities of resin-coated yarns and multifilament yarns have a specific volume occupancy ratio In particular, in the form of a single layer fabric, or a double fabric, or a triple fabric, furthermore, flattening the cross section of the resin-coated yarn, and making the resin-coated yarn thermally expandable. In the above, the obtained ceiling area-constituting membrane material (membrane ceiling) or a woven membrane material as a ceiling accessory (airborne membrane) has sufficient strength as a membrane ceiling, and the ceiling has fallen in preparation for an earthquake Even in the case of lightness and non-combustibility that is unlikely to cause serious personal injury, it is excellent in sound absorption without being unevenly distributed especially to noise in general, and also effects by lighting and image projection They have found that it is a function and have completed the present invention.

  That is, the sound absorbing film material of the present invention is a woven fabric containing a resin-coated yarn and a multifilament yarn in a woven or knitted element having a porosity of 5% or less, and the specific gravity difference between the resin coated yarn and the multifilament yarn is It is preferable that the occupied volume ratio of 0.25 or more and both yarns is 4: 1 to 1: 1. In a woven fabric woven by using yarns having different specific gravities at a specific occupied volume ratio, the yarns of different specific gravities are exposed, hidden, or sterically crossed in the weave unit, and the sound-absorbing film material of the present invention A sound-absorbing effect is realized by forming minute units in which weave units having different sound absorption properties are randomly or regularly scattered on the entire surface, that is, in contrast to resin-coated yarns and multifilament yarns, resin coatings The yarn effectively absorbs the sound in the lower frequency range than the multifilament yarn, and the multifilament yarn effectively absorbs the sound in the higher frequency range than the resin coated yarn The synergetic effect makes it possible to express the sound absorption effect for a wider range of noise. In the present invention, the resin-coated yarn and the multifilament yarn may have a sound absorbing effect in a common frequency range depending on the specific gravity difference between the two. For example, as the specific gravity difference decreases, the common frequency range increases, and as the specific gravity difference increases, the common frequency range decreases. Therefore, in order to make the effect of the sound absorbing film material of the present invention higher, it is preferable to make the sound absorption frequency regions of the resin coated yarn and the multifilament yarn different from each other, but it is not limited thereto.

  In the sound-absorbing film material of the present invention, the woven or knitted fabric element is 1) a warp yarn group and a weft yarn group, or 2) a warp yarn group and a left oblique upper / right oblique upper bias yarn group, and the woven fabric is a single layer It is preferable that it is any one selected from woven fabric, double woven fabric, and triple woven fabric. In these woven fabrics woven with yarns having different specific gravities, yarns of different specific gravities are exposed in the texture unit, or sound absorbing property is provided on the entire surface of the sound absorbing film material of the present invention by the effect of hiding or intricate three-dimensional crossing. To express the sound absorption effect by interspersing different weave units (random arrangement or regular arrangement) in a complex manner, that is, the resin-coated yarn effectively produces sound in a lower frequency range than the multifilament yarn At the same time, the multifilament yarns have the synergetic effect of effectively absorbing the sound in the higher frequency range than the resin-coated yarns, and can make it possible to express the sound absorption effect for a wider range of noise.

In the sound-absorbing film material of the present invention, the resin-coated yarn preferably has a flat elliptical cross section, and the height: width ratio in the flat elliptical cross section is preferably 3: 4 to 1: 4. This can further improve the sound absorption effect.

In the sound-absorbing film material of the present invention, the resin-coated yarn comprises a multifilament yarn and a resin coating layer, the resin coating layer has thermal expansion, and the porosity after thermal expansion is 1%. It is preferable to block below. As a result, the sound absorbing effect is improved, and at the same time, the flame heat due to fire (simulated when the sound absorbing film material is irradiated with 50 kW / m ² of radiant heat by a cone calorimeter test (ASTM-E1354)) The covering portion expands in volume, promotes clogging of the fabric, and obstructs the porosity of the sound absorbing membrane material to 0 to 1%, thereby preventing flame penetration and toxic gas leakage, and incombustible according to the Building Standard Law. Sound absorbing membrane material

In the sound absorbing film material of the present invention, it is preferable that the resin coating layer mainly contains a vinyl chloride resin, a layered inorganic compound, and a molybdenum compound particle. At the same time the sound absorption effect is improved by including a layered inorganic compound, flame heat by fire (simulated when the sound absorbing film material is irradiated with 50 kW / m ² of radiant heat by a cone calorimeter test (ASTM-E1354)) The covering portion of the resin-coated yarn expands in volume to promote clogging of the fabric, and function to block the porosity of the sound absorbing film material to 0 to 1% to block flame penetration and toxic gas leakage, and the molybdenum compound By forming a residue layer (chlorine-molybdenum composite oxide) that solidifies combustion carbides by the action of particles, it is non-combustible according to the Building Standard Act by continuing to block the penetration of flames and leakage of toxic gas for a long time Sound absorbing membrane material

In the sound-absorbing film material of the present invention, a bubble-containing resin layer having a density of 0.35 to 0.75 g / cm ³ is formed on one side of the woven fabric, and part of the bubble-containing resin layer infiltrates into the woven fabric. The depth is preferably 1 to 35% of the thickness of the fabric. Sound absorption can be further improved by this.

  In the sound-absorbing film material of the present invention, preferably, the bubble-containing resin layer mainly contains a vinyl chloride resin, a layered inorganic compound, and a molybdenum compound particle. As a result, the sound absorbing effect is improved and, at the same time, the layered inorganic compound is volumetrically expanded by the flame heat at the time of fire to block the penetration of the flame and the leakage of toxic gas, and the residue of the combustion compound particles. By forming a layer (chlorine-molybdenum composite oxide), a sound absorbing film material having nonflammability conforming to the Building Standard Act can be obtained by maintaining a blockage such as a flame penetration or a toxic gas leakage for a long time.

  According to the present invention, there is provided a non-combustible membrane material conforming to the Building Standard Act as a ceiling area constituting membrane material (membrane ceiling) and sound absorbing membrane material installed on the ceiling of a building, or a ceiling area constituent member accessory In preparation for disasters, by using a woven fabric made of yarns having different specific gravities, having lightness and flexibility that are unlikely to cause serious personal damage even if the ceiling falls. A fine unit in which weave units different in sound absorption are randomly or regularly scattered on the entire surface of the sound absorbing film material of the present invention by exposing, hiding or sterically crossing yarns of different specific gravities in weave units. The sound absorption effect is expressed by constructing the unit, and in particular, the sound absorption effect in the low frequency region of less than about 1000 Hz by the resin coated yarn, and the medium to high frequency region of about 1000 Hz or more by the multifilament yarn. The sound absorption effect at the same time is separately expressed simultaneously, and the sound absorption effect is excellent without uneven distribution to the whole noise, and the effects by lighting and image projection are also possible, so indoor stadium, gymnasium, indoor pool, event hall, public hall. It can be applied not only to construction of membrane ceilings for ceremonial ceremonies, station buildings, airports, shopping malls, etc., but also for construction of light ceiling membranes, and also to partitions, blinds, sunshade tents and the like.

The figure which shows typically an example of the weaving and knitting element of the sound-absorbing film material of this invention The figure which shows typically an example of the weaving and knitting element of the sound-absorbing film material of this invention The figure which shows typically an example of the cross section of the sound-absorbing film material of this invention The figure which shows typically an example of the cross section of the sound-absorbing film material of this invention

  The sound-absorbing film material of the present invention is a woven fabric containing resin-coated yarns and multifilament yarns in a woven or knitted element having a void ratio of 5% or less (occupancy of the total of pore-like gaps generated at woven cross points) A single layer fabric, or a double fabric, or a triple fabric, wherein the specific gravity difference between coated yarns and multifilament yarns is 0.25 or more, and the occupied volume ratio of both yarns is 4: 1 to 1: 1. is there. Thus, in a woven fabric woven by using two types of yarns having different specific gravities at a specific occupied volume ratio, yarns of different specific gravities are exposed or hidden in a weave unit, or three-dimensionally entangled in a complex manner In this way, excellent sound absorbing effects can be expressed by the minute configuration in which weave units having different sound absorbability are scattered on the entire surface of the sound absorbing film material, that is, resin coated yarn in comparison with resin coated yarn and multifilament yarn The line effectively absorbs the sound in the lower frequency range than the multifilament yarn, and the multifilament line simultaneously absorbs the sound in the higher frequency range higher than the resin-coated line The effect makes it possible to express the sound absorption effect against noise in a wider area. This effect is evaluated by Noise Reduction Coefficient (NRC value) according to JIS A1405 (vertical incidence method). (NRC value: Arithmetic mean value of sound absorption coefficients of 250 Hz, 500 Hz, 1000 Hz, 2000 Hz) In the present invention, the resin-coated yarn and the multifilament yarn absorb sound in a frequency range common to each other according to the specific gravity difference. It may have an effect. For example, as the specific gravity difference decreases, the common frequency range increases, and as the specific gravity difference increases, the common frequency range decreases. Therefore, in order to make the effect of the sound absorbing film material of the present invention higher, it is preferable to make the sound absorption frequency regions of the resin coated yarn and the multifilament yarn different from each other, but it is not limited thereto. The fracture strength and tear strength of the membrane material obtained by the arrangement (woven and knitted element) including such resin coated yarns are effectively improved. For example, in a film material in which the occupied volume of the resin-coated yarn deviates from the above ratio range, and the above ratio is set to 1: 2, the sound absorption effect in a low frequency region of less than about 1000 Hz may be reduced. The resin-coated yarn is provided with a resin coating layer on the entire surface of the multifilament yarn, and includes an embodiment in which the entire multifilament yarn is resin-impregnated or one in which a part of the multifilament yarn is resin-impregnated. Glass fibers (specific gravity 2.49 to 2.55) and silica fibers (specific gravity 2.15) are used as resin-coated yarns and multifilament yarns in order to make the sound-absorbing film material of the present invention sufficiently incombustible. 2.2 2.2), alumina fiber (specific gravity 3.0 to 3.6), silica alumina fiber (specific gravity 2.5 to 3.0), basart fiber (specific gravity 2.6 to 2.8), carbon fiber (specific gravity The use of inorganic fibers such as 1.73-1.8) and non-combustible fibers such as metal fibers such as stainless fibers (specific gravity 4.6) is preferred, but poly-p-phenylene terephthalamide fibers, poly-p-benzamide fibers, Aramid fiber such as p-phenylene 3,4 oxydiphenylene terephthalamide copolymer fiber (specific gravity 1.3 to 1.45), poly p-phenylene benzimidazole fiber (specific gravity 1.3 to 1.45), poly p fiber Nylene benzoxazole fiber (specific gravity 1.5 to 1.6), poly p phenylene benzthiazole fiber (specific gravity 1.5 to 1.6), polyetheretherketone fiber (specific gravity 1.69), polysulfone fiber (specific gravity 1) .24) may be used, or may be mixed with the above-mentioned non-combustible fibers and the like. Similarly, the above-mentioned non-combustible fibers, heat-resistant fibers and the like include polypropylene fibers (specific gravity 0.9), polyethylene fibers (specific gravity 0.92), polyester fibers (specific gravity 1.38), nylon fibers (specific gravity 1.14) And synthetic fibers such as vinylon fiber (specific gravity 1.27) can be used together. In addition, short fiber spun yarns such as non-combustible cotton (having a specific gravity of about 1.6) or non-combustible kenaf (having a specific gravity of about 1.5) obtained by boric acid esterification, phosphoric acid esterification, or silicification of hydroxyl groups of cellulose. In addition, yarns blended with short fiber spun yarns such as the above-mentioned noncombustible fibers, heat resistant fibers, and synthetic fibers are also effective.

  In resin-coated yarns and multifilament yarns, multifilament yarns are yarns having a filament diameter of 3 to 10 μm and a fineness of 69 to 2223 dtex, particularly 138 to 1112 dtex, and having 50 to 500 filaments, especially 100 to 300 filaments. Yarns which are gathered and bundled into non-twisted yarns or twisted yarns and whose cross-sectional shapes are circular, oval and flat (elliptical shapes which are collapsed in the horizontal direction), and particularly in the sound absorbing film material of the present invention Multifilament yarns are preferred. Similarly, resin-coated yarns using multifilament yarns of flat elliptical cross section also have flat elliptical cross sections, and the ratio of height: width in flat elliptical cross sections of resin coated yarns is 3: 4 to 1: 4, especially A flat ellipse of 2: 3 to 2: 5 is preferable for sound absorption improvement by JIS A1405 (vertical incidence method), and at the same time, 1000 Hz of a film material obtained by including a resin-coated yarn of flat elliptical cross section Improve the following sound absorption effect. Since the specific gravity of the multifilament yarn includes a gap which converges the number of filaments of 50 to 500, the specific gravity of the various fibers described in paragraph [0015] is 0.65 to 0 depending on the content ratio of the gap. The apparent specific gravity is the value multiplied by .97, but the specific gravity measured directly from the multifilament yarn is the most appropriate. In particular, multifilament yarns of apparent specific gravity obtained by multiplying specific gravity of fiber by 0.65 to 0.85 are bulky yarns in which filaments are intertwined with a gap, and these are taslan yarns, interlaced yarns , Wooly yarn etc. Specifically, at the time of production of multifilament yarn, opening (disaggregation) of filaments is carried out by air jet interlacing with a Taslan nozzle, and random loose is achieved by forcing entrainment and entanglement in a turbulent vortex. This yarn is bulked by forming a large number of entanglements, loops, spiral coils, and knots. Alternatively, it may be a crimpable (core-sheath) filament, or a (core-sheath) bulky yarn obtained by interlacing crimped (core-sheath) filaments. When sound is incident on a fibrous continuous material (a material with a large surface area), such as a multifilament yarn, especially bulky yarn, the sound diffuses in the small space, causing friction or resistance with the filament, Part of the sound energy is consumed as heat energy by vibration of the filament. The apparent specific gravity of resin-coated yarn is: specific gravity of multifilament (bulky) yarn × volume occupancy of multifilament (bulky) yarn, and specific gravity of resin (impregnated) coating layer × volume of resin (impregnated) coating layer It is the sum of the occupancy rate. Here, the sum of the volume occupancy of the multifilament (bulky) yarn and the volume occupancy of the resin (impregnated) coating layer is 1.0, but the specific gravity measured directly from the resin-coated yarn is the most appropriate. The (apparent) specific gravity difference between the resin-coated yarn and the multifilament yarn as described above is preferably at least 0.25, preferably at least 0.45, because the sound absorption effect is exhibited.

  When the core yarn and multifilament yarn of the resin-coated yarn are multifilament yarns made of glass fiber, the glass fiber is E (alkali free) glass, C (alkali containing) glass, G glass, A glass, S glass And any glass composition such as D glass or DE glass, and that the surface modification treatment with a silane coupling agent is applied to the glass fiber, adhesion to the resin coating layer constituting the resin coated yarn It is preferable from the viewpoint of improvement. Specifically, the silane coupling agent is vinyltrimethoxysilane, vinyltriethoxysilane, 3-methacryloxypropyltrimethoxysilane, 3-methacryloxypropylmethyldiethoxysilane, 3-acryloxypropyltrimethoxysilane, 3-amino One or more selected from propyltrimethoxysilane, 3-triethoxysilyl-N- (1,3-dimethyl-butylidene) propylamine, 3-glycidoxypropyltrimethoxysilane, 3-mercaptopropylmethyldimethoxysilane, etc. , And organic titanate compounds may be used.

The resin coating layer of the resin-coated yarn has thermal expansion, and flame heat due to fire (simulated when the sound absorbing film material is irradiated with 50 kW / m ² of radiant heat by a cone calorimeter test (ASTM-E1354)) Volume expansion and block the porosity of the sound absorbing membrane material to 0 to 1% to block fire penetration and toxic gas leakage, making the sound absorbing membrane material noncombustible according to the Building Standard Act . In order to make the resin coating layer of the resin-coated yarn thermally expandable, the resin coating layer contains 1.5 to 10% by mass of a layered inorganic compound, and the layered inorganic compounds include smectite clay mineral, synthetic smectite, and seri. One or more selected from sites, fluorine mica and expanded graphite are used. Such a resin coating layer mainly contains a layered inorganic compound based on a thermoplastic resin, and the specific gravity of the resin coating layer is 1.3 to 2.5. The thermoplastic resin component used for the resin coating layer constituting the resin-coated yarn comprises a vinyl chloride resin (a soft composition containing a plasticizer in an amount of 30 to 100 parts by mass with respect to 100 parts by mass of the vinyl chloride resin), vinyl chloride Copolymer resin, olefin resin, olefin copolymer resin, urethane resin, urethane copolymer resin, acrylic resin, acrylic copolymer resin, vinyl acetate resin, vinyl acetate copolymer resin, styrene resin Styrene copolymer resin, polyester resin, and polyester copolymer resin, fluorocarbon resin (polytetrafluoroethylene), fluorocopolymer resin, etc. can be used, and the thermoplastic resin of the resin coating layer is made different. A plurality of resin-coated yarns can also be used in combination.

  Examples of layered inorganic compounds include smectite clay minerals, synthetic smectites, sericite, fluorine mica, and expanded graphite, and all of them have the property of volume expansion due to heat, and these layered inorganic compounds are resin-coated layers. It is preferable to contain 1.5-10 mass% with respect to. As a smectite clay mineral, it is a 2: 1 type smectite, and a layer consisting of silicon and oxygen (a silica tetrahedron layer) sandwiches a layer consisting of aluminum and oxygen (aluminium octahedron layer), “silica tetrahedron layer / The aluminum octahedral layer / silica tetrahedral layer structural layer is one unit, and the structural layers are stacked. Specific examples of the dioctahedral smectite include montmorillonite, beidellite, nontronite, and the like, and specific examples of the trioctahedral smectite include saponite, hectorite, sauconite, Stephenite, and the like. The synthetic smectite has a structure in which a silica tetrahedral (tetracoordinated) layer and an aluminum octahedral (hexacoordinated) layer are alternately stacked, and a silica / aluminum mass ratio of 2: 1 is preferable. Sericite (sericite) is a fine muscovite having an average particle size of 1 to 20 μm. Further, as fluorine mica, fluorine tetra silicon mica having an average particle diameter of 1 to 20 μm obtained by organic exchange treatment of Na tetra silicon mica can be used. Further, it is also possible to use an intercalation-type layered compound in which a quaternary ammonium compound is substituted and modified between layers of a smectite clay mineral (such as montmorillonite). As expanded graphite, natural graphite can be treated with concentrated sulfuric acid, nitric acid, selenic acid, etc. and concentrated nitric acid, perchlorate, permanganate, dichromate, etc., and these have a graphitic layer structure Because of the crystalline compound, a noncombustible carbonized layer is formed by expansion with a thermally generated gas.

  Particularly preferably, the resin coating layer of the resin-coated yarn mainly contains a vinyl chloride resin, a layered inorganic compound, and a molybdenum compound particle, and a vinyl chloride resin (a plasticizer is used based on 100 parts by mass of the vinyl chloride resin). Preferably, the layered inorganic compound is 1.5 to 10 parts by mass, and the molybdenum compound particles are 1.5 to 10 parts by mass with respect to 100 parts by mass of the soft composition containing 30 to 100 parts by mass. Molybdenum trioxide, molybdic acid, phosphomolybdic acid, molybdenum disulfide, sodium molybdate, hexaammonium molybdate, diammonium molybdate, calcium molybdate, calcium molybdate, potassium molybdate, molybdate as a molybdenum compound particle Calcium carbonate and the like, and in particular, a residue layer (chlorine that strengthens the combustion carbides of these chlorine-containing resins by combined use with chlorine-containing resins (vinyl chloride resin, soft vinyl chloride resin, vinylidene chloride resin, chlorinated polyethylene) By forming a molybdenum composite oxide), it is possible to provide nonflammability conforming to the Building Standard Act by enhancing the blocking rate of flame penetration and toxic gas leakage and the like.

  Moreover, a flame retardant particle can be used together to a resin coating layer, and a flame retardant particle is a). Compounds containing phosphorus atoms such as metal phosphates, metal organic phosphates, phosphoric acid derivatives, ammonium polyphosphates, and ammonium polyphosphate derivatives (such as melamine-modified products), b). Nitrogen atom-containing compounds such as (iso) cyanurate compounds, (iso) cyanuric acid compounds, guanidine compounds (such as dicyandiamide), urea compounds (such as dimethylol urea), and derivative compounds thereof (such as melamine cyanurate) , C). Metal hydroxide (such as aluminum hydroxide), metal oxide (such as antimony oxide), metal carbonate compound (such as basic magnesium carbonate), metal sulfate compound (such as barium sulfate), boric acid compound (such as zinc borate) And inorganic compounds such as inorganic compound complexes (such as hydrotalcite), d). One or more selected from bromine-substituted organic compounds and chlorine-substituted organic compounds.

  In the resin-coated yarn, the thickness of the resin coating layer is preferably 0.03 mm to 0.5 mm, particularly 0.05 mm to 0.3 mm. On the other hand, the resin-coated yarn is provided with a resin coating layer on the entire surface of the multifilament core yarn, and includes the embodiment in which the entire multifilament core yarn is resin impregnated or that part of the multifilament core yarn is resin impregnated. . In this embodiment, the mass ratio of the multifilament core yarn to the resin coating layer is 3: 1 to 1: 2, preferably 3: 2 to 2: 3. Particularly preferred resin coating layers in the present invention are vinyl chloride resins (including soft to semi-rigid vinyl chloride resins containing plasticizers, stabilizers, flame retardants, etc.), styrene copolymer resins (flame retardants, etc.) And thermoplastic resins such as urethane copolymer resins (containing flame retardants and the like), and fluorine copolymer resins. These thermoplastic resins are used in an extrusion molding machine in which multifilament yarns are cored through a coating die, and the thermoplastic resin is made into a hot melt state and extruded from the die nozzle hole of the coating die and simultaneously withdrawing the fiber yarns. The resin coating layer is continuously coated on the surface of the multifilament core yarn to obtain a resin coated yarn. Also, multifilament core yarn is dipped in a viscous liquid such as vinyl chloride resin paste sol, a flame retardant resin solution solubilized in an organic solvent, and an aqueous resin based flame retardant composition such as an emulsion or latex, The resin coating yarn may be obtained by heat treating and drying. These resin coating layers may contain organic pigments, inorganic pigments, pearl powder pigments, aluminum powder pigments, luster pigments, phosphorescent pigments, fillers, UV absorbers, antidegradants, adhesives, mildew proofing agents, if necessary. It can contain known additives such as an antibacterial agent, an insect repellent agent, an antistatic agent, a perfume and the like.

As an example of a woven and knitted element in which resin coated yarn and multifilament yarn are included in the woven and knitted element and the occupied volume ratio of both yarns is 4: 1 to 1: 1, 1) a warp group and a weft group, Or 2) a warp yarn group and a left oblique upper right oblique upper bias yarn group, which is any aspect of a single layer fabric, a double fabric, and a triple fabric. 1) In the case where the weaving and knitting elements are warp yarn groups and weft yarn groups, a mode including resin-coated yarns and multifilament yarns in a regular alternating arrangement or random arrangement in both groups, or a yarn coated with resin-coated yarns In the group, there can be exemplified a mode in which multifilament yarns are selectively used for weft lines, or a mode in which the opposite is used properly, and each of them is any mode of a single layer fabric, a double fabric and a triple fabric. Also, in the case of the triaxial woven fabric 2) warp yarn group and left oblique upper right oblique upper bias yarn group, resin coated yarn and multifilament yarn are regularly alternated in both groups. An embodiment including arrangement or random arrangement, an embodiment using resin-coated yarns as warp yarns, and an embodiment using multifilament yarns as bias yarns, or the opposite is also possible. The value when the total of the pore-like gaps of the woven and knitted fabric intersections 1) and 2) in the double woven fabric and the triple woven fabric is defined as the porosity is 5% or less, in particular 1. 5% or less is preferable. When sound enters the hole-like gap, resonance vibration occurs at a specific frequency, air is vibrated in the hole-like gap, and sound energy is attenuated, so the hole diameter of the hole-like gap is in the range of 0.05 to 1.0 mm in diameter The number of hole-like gaps is preferably in the range of (vertical 8 × horizontal 8) to (vertical 60 × horizontal 60) /25.4 mm ² , particularly The sound absorption effect is enhanced with a peak of 12 vertical pieces × 12 horizontal pieces to (33 vertical pieces × 33 horizontal pieces) /25.4 mm ² . The sound absorption on the entire surface of the sound absorbing film material of the present invention is achieved by exposing, hiding or sterically crossing yarns of different specific gravities in the weave unit by this pore-like gap and the woven and knitted element by yarns having different specific gravities. Sound absorbing effect is realized by forming minute units in which weave units different in nature are randomly or regularly dotted, and specifically, resin coated yarn has a lower frequency range than multifilament yarn Sound absorption effect, and at the same time, multifilament yarns have the synergetic effect of effectively absorbing sound in the higher frequency range than resin-coated yarns, and the expression of sound absorption effect for wider-range noise To be possible.

Single layer woven fabric is plain woven fabric, 2/2 fabric (basket) woven fabric, 2/2 woven fabric, 2x1 woven fabric, 2/1 woven fabric, 2/2 woven fabric, 3/1 diagonal (4 sheets), 3 / 1 broken letter (four pieces), 3/2 piece (five pieces), 4/1 letter (five pieces), 5/1 letter (six pieces), 4/2 letter (6 pieces) 6), 1/3/1 1 Zhibun (6), etc., Yuzu fabric: 2 steps 4/1 forceps (five pieces of forceps), 3 steps of 4/1 forceps (five pieces of forceps), 2 steps 3/2 forceps (five pieces of forceps), 3 steps 3/2 forceps (five pieces of forceps), etc., and their change plain weave, change cane weave, change cane weave, etc. Textiles, day-night satin weaves, baloon weaves (twill weaves, twill weaves), sewn weaves, russell knits, etc. can be used, which have a mass of 0.2 to 1.2 kg / m ² and a porosity of 5% or less Of pore-like gaps that occur in Occupancy of the sum), preferably 2.5% or less, and an air permeability (JIS L1096: the Frazier method) 3~50cc / cm ² / sec, preferably exemplified those satisfying 10~25cc / cm ² / sec .

The double fabric is a fabric that is overlapped on the upper and lower two sheets using warp yarns of the front and back warps and weft yarns of the front and back wefts, and the upper woven fabric has a void ratio of 10 for the front warp and front wefts. % Or less (occupancy of the total sum of pore-like gaps occurring at the weave intersections), and the lower fabric has a void ratio of 10% or less between the back warp and the back weft (sum of pore gaps occurring at the weave intersections) form a occupancy), mass 0.4~2.4kg / ^{m 2,} 5% or less shared porosity (occupancy of the sum of the overlapping portion of the hole-shaped gaps formed stacked textiles), preferably 2. 5%, and air permeability (JIS L1096: Frazier method) 3~50cc / cm ² / sec, is preferably exemplified satisfy the 10~25cc / cm ² / sec. Similarly, in the upper and lower woven fabric, the upper fabric has a void ratio of 10% for the upper warp and the outer warp, using the warp and reverse warp, and the upper and lower bias yarns. The following (the occupancy rate of the total of the pore-like gaps occurring at the weave intersections) is formed, and the lower woven fabric has a void ratio of 10% or less between the back warp and the back oblique filaments (the sum of the pore gaps occurring at the weave intersections Occupy a percentage of 0.4 to 2.4 kg / m ² and a shared porosity of 5% or less (a percentage of the sum of overlapping portions of pore-like gaps generated in stacked fabrics), preferably 1 to 2.5%, and air permeability (JIS L1096: Frazier method) 3~50cc / cm ² / sec, is preferably exemplified satisfy the 10~25cc / cm ² / sec. If the air permeability is less than 3 cc / cm ² / s, the echo suppressive effect may be deteriorated, and if the air permeability exceeds 50 cc / cm ² / s, the sound absorption may be deteriorated. When the sound absorbing membrane material is placed horizontally and observed from the vertical direction, the common void ratio is a common void which penetrates the two fabrics, with the void portion of the upper fabric and the void portion of the lower fabric overlapping each other. The occupancy rate per unit area of the sum of That is, the shared void ratio has a small value because the yarn of the upper woven fabric is disposed overlapping the void of the lower woven fabric, or the yarn of the lower woven fabric is disposed overlapping the void of the upper woven fabric, Apparent 0 depending on the degree of overlap. A double-layered fabric is a pair of weft yarns, in which the surface and back fabric are organized, and an extra warp yarn is woven on the back of a single layer of fabric, and the arrangement of the surface and back fabric is 1: 1 , 2: 1, 3: 1, etc. A weft double fabric is a pair of warp yarns in which front and back wefts are organized and a single fabric is woven with another weft, and the arrangement of front and back lats is 1: 1, 2: 1, 3: 1 and so on. The double-woven fabric is obtained by weaving two pieces of woven fabric with the same loom, and bonding the upper and lower pieces of woven fabric (each having a weight of 0.4 to 1.2 kg / m ² ) with the woven yarn.

Similarly, the triple-layer fabric is a fabric in which three upper, middle, and lower fabrics are stacked using warp yarns of surface, middle, and back and wefts of surface, middle, and back lats. Each of the woven fabric and the lower woven fabric is composed of an air gap of 10% or less (the occupancy ratio of the total of the pore-like gaps generated at the cross points of weaves) and a mass of 0.2 to 1.0 kg / m ² . 0 kg / m ² shared porosity 5% or less (occupancy of the total sum of overlapping portions of the pore-like gaps generated in stacked fabrics), preferably 2.5% or less, and air permeability (JIS L1096: Frazier method) 3 50 cc / cm ² / sec, preferably those satisfying 10~25cc / cm ² / sec, likewise through triple fabric (a set of tissue Omotekei, medium through-Urakei weft strip), weft triple fabric ( 1 set of warp yarns with front, middle and back wefts organized, triple-weave fabric: a) 3 sheets of fabric woven with the same loom, the lower yarn with the yarn From middle fabric to upper fabric, b) from upper fabric to middle fabric, from middle fabric to lower fabric, c) from upper fabric to middle fabric One obtained by binding, binding from the lower woven fabric to the middle woven fabric, and d) binding only the upper, middle, and lower woven fabric ears can be exemplified. If the air permeability is less than 3 cc / cm ² / s, the echo suppressive effect may be deteriorated, and if the air permeability exceeds 50 cc / cm ² / s, the sound absorption may be deteriorated.

Double-woven fabrics are, for example, fly-shurt looms, air jet looms, throughzer looms, rapier looms, water jet looms etc. The upper fabric having a woven structure and the lower fabric having a 2/1 diagonal (twill) woven structure consisting of trans-resin-coated yarns and weft multifilaments, and the resin-coated yarn of the lower fabric At given points, the strips float on the weft multifilament yarns of the upper fabric and join them at the binding points, and at the same time, weft weft multifilaments of the lower fabric float on the resin-coated yarns of the upper fabric. Double woven fabric that is joined together at the attachment points, and the attachment points for the upper and lower It is preferred. In the sound absorbing film material using such double woven fabric, the upper woven fabric having the texture of the 2/1 diagonal (twill) weave of the woven fabric ascending to the right and the 2/1 diagonal (twill) weave as the left upward By forming a double fabric comprising the lower fabric having the following structure, the structures of the upper fabric and the lower woven fabric (the twill weave) do not intersect and the void portions of the respective fabrics do not completely overlap with each other. The shared porosity ratio is 5% or less (preferably 2.5% or less). This double woven fabric can satisfy air permeability (JIS L 1096: Frasil method) of 3 to 50 cc / cm ² / s with a common porosity of 5% or less, particularly even at an apparent 0%. This is because the gap at the interface between the upper fabric and the lower fabric functions as a vent, and the gap between the upper fabric and the lower fabric is connected three-dimensionally. Such a three-dimensional continuous ventilation part effectively contributes to the diffuse absorption of sound. In addition, the cross points of the woven resin-coated yarn and the weft resin-coated yarn fixed to each other by thermal adhesion are excellent in the shape stability of the sound absorbing film material, and in particular, no thermal fusion fixation is made at the woven intersection, If the thermal adhesion is minor, make the sound absorbing film flexible. Fixation of the woven intersection by heat adhesion may extend to the entire double woven fabric, or may be thermal adhesion of partial partial weave intersection at equal intervals in the top, bottom, left, and right, or at random.

Similarly, in triple-woven fabrics, those in which the diagonal lines of each fabric cross the diagonal lines of the adjacent fabric cross the diagonal lines of each fabric with the adjacent diagonal lines of the adjacent fabric, so the gaps of the respective fabrics Since the layers do not completely overlap each other, the common porosity is 5% or less. Such a triple woven fabric can satisfy air permeability (JIS L1096: Frasil method) of 3 to 50 cc / cm ² / s with a common porosity of 5% or less, particularly even at an apparent 0%. In this case, the gap between the two interfaces of the upper fabric and the middle fabric, and the interface between the middle fabric and the lower fabric functions as a vent and three-dimensionally connects the gaps of the upper fabric, the middle fabric, and the lower fabric. By action. Such a three-dimensional continuous ventilation part effectively contributes to the diffuse absorption of sound. In addition, double weave and triple weave weaves consist of an upper weave with an M / N diagonal weave (left) and a lower weave with an M / N diagonal weave (left). Double woven fabric (M = 2 to 5 integers, N = 1) or (M = 1, N = 2 to 5 integers), and the texture of the M / N diagonal (綾) weave upward to the right Triple woven fabric (M = 2-5 integers, N = 1) or (M = 1,) consisting of upper and lower woven fabrics and a middle woven fabric having an M / N diagonal (斜) woven texture N is an integer of 2 to 5) and the like. Similarly, even if the sound absorbing film material of the present invention is a quadruple woven fabric, a quintuple woven fabric or the like, the corresponding sound absorption effect is similarly obtained.

Similarly, in the case of a laminated fabric by plain weave, imitation weave, five-sheet satin weave (2 steps 4/1 forceps, 3 steps 4/1 forceps, 2 steps 3/2 forceps, 3 steps 3/2 forceps) Textiles in which the tissue displacement of the woven tissue is shifted by one complete texture vertically and horizontally to the opposite position in the front and back tissues so that the tissue displacement of the upper / lower or upper / middle / lower) does not overlap with each other I assume. Since the gap is deviated from the front, the shared porosity is 5% or less, but the air permeability (JIS L1096: Frasil method) can be 3 to 50 cc / cm ² / sec even if the apparent porosity is 0%. This is because the gap at one or two interfaces of the fabric (upper / lower or upper / middle / lower) functions as an air vent and dimensionally connects the voids of each fabric. Such a three-dimensional continuous ventilation part effectively contributes to the diffuse absorption of sound. A triaxially laminated fabric in which two or three woven fabrics using warp and left oblique upper / right oblique upper bias yarns overlap each other and has a porosity of 10% or less of each fabric, and a mass of 0.8 to 3.0 kg / m ² , shared porosity 5% or less (preferably 2.5% or less), and air permeability (JIS L1096: Frazier method) 3 to 50 cc / cm ² / sec, preferably 10 to 25 cc / cm ² 2 or 3 pieces of woven fabric using warp yarn, weft yarn and left oblique top / right oblique upper bias yarn, such as triaxial plain woven fabric or triaxial basket woven fabric or triaxial imitation woven fabric, etc. It is an overlapping four-axis laminated fabric with a void ratio of 10% or less of each fabric, a mass of 0.8 to 3.0 kg / m ² , a shared porosity of 5% or less (preferably 2.5% or less), and aeration Degree (JIS L1096: Frazier method) 3 to 50 cc / cm ² / sec, preferably It may be a quadruple plain weave that satisfies 10 to 25 cc / cm ² / s, or a quadruple basket weave or a quadruple imitation woven weave, or the like. In the woven fabric described above, the woven intersections of resin-coated yarns are fixed to each other by thermal adhesion are excellent in the shape stability of the sound absorbing film material, and those with no thermal fusion fixation at the woven intersection or those with slight thermal adhesion Makes the sound absorbing film more flexible. Fixation of the woven intersection by heat adhesion may extend to the entire fabric, or may be thermal adhesion of partial partial weave intersections at equal intervals in the top, bottom, left, and right, or at random.

In the embodiment of the sound absorbing film material of the present invention, a bubble-containing resin layer having a density of 0.35 to 0.75 g / cm ³ is formed on one side of the woven fabric, and a part of the bubble-containing resin layer infiltrates into the fabric structure. The depth is preferably 1 to 35% of the thickness of the fabric. The bubble-containing resin layer is formed by coating of a foam-like composition and solidifying treatment, whereby a part of the bubble-containing resin layer infiltrates into the woven fabric structure, whereby the air permeability (JIS L1096: Frazier method) 3 to 50 cc / Cm ² / sec, preferably 10 to 25 cc / cm ² / sec, to further enhance the echo damping effect. Sound energy is converted into heat energy and consumed by the viscous friction generated by air reflection due to the incidence of sound propagating to the air bubble portion contained in the air bubble containing resin layer and diffused reflection or vibration, thereby exhibiting a sound absorbing effect. For example, a foam-like composition may be a two-component silicone elastomer paste (an organic solvent can be contained in a viscosity modifier), a resin composition (coating) by a silicone resin emulsion, a paste sol mainly composed of a soft polyvinyl chloride resin Mechanical agitation is performed using a silicone oil (1 to 5 parts by mass as a foam stabilizer), etc., and the like with a stirrer (a blade made of a combination of stainless steel and metal is attached to form a bowl) to forcibly force air bubbles. The whipped whip is knife-coated on one side of the fabric as it is and solidified to simultaneously impregnate and coat the fabric, and the aerated resin layer formed thereby is partially impregnated in the fabric. , And by making the maximum depth of this impregnation part 1 to 35% with respect to the thickness of the fabric, the inside of the fabric substantially also contains air bubbles Further improve the sound absorption characteristics of echo attenuation effect by forming a formation. When the density of the bubble-containing resin layer exceeds 0.75 g / cm ³ , the sound absorption characteristics due to the echo damping effect may be insufficient, and when the density is less than 0.35 g / cm ³ , the abrasion strength of the bubble-containing resin layer It can be worse.

In the present invention, the bubble-containing resin layer is a part of which the impregnated part is a coating of a chemical foaming agent-containing composition, and the chemical foaming agent is pyrolized and gasified by heating at 180 to 220 ° C. Means having a permeability of ³ to 50 cc / cm ² / sec having air permeability (JIS L 1096: Frazier method) formed to a density of 0.35 to 0.75 g / cm ³ and containing the As preferred. Chemical blowing agent-containing composition is added to a soft vinyl chloride resin paste sol containing a plasticizer as a chemical blowing agent, such as azodicarbamide, oxybisbenzenesulfonyl hydrazide, benzenesulfonyl hydrazide, p-toluenesulfonyl hydrazide, diazoaminobenzene, azobis By impregnating a single side of the fabric with a viscous paste sol composition containing 1 to 10 parts by mass of one or more selected from isobutyro nitrile etc., impregnation and coating on the fabric are simultaneously achieved, thereby A part of the aerated resin layer formed has an impregnated portion in the fabric, and the maximum depth of the impregnated portion is 1 to 35% of the thickness of the fabric. The chemical blowing agent is pyrolyzed into a gas by heating at 180 to 220 ° C., and the bubbles generated as gas generation marks are included in the bubble-containing resin layer and the impregnated portion, and the density of the bubble-containing resin layer is 0.35 to 0.75 g It is set to ³ cm ³ . The bubble-containing resin layer is heat-melted at 150 to 175 ° C. as a film obtained by calendering a composition containing 1 to 10 parts by mass of the above-mentioned chemical foaming agent in a soft vinyl chloride resin or styrene copolymer resin. The chemical foaming agent is thermally decomposed and gasified by heating at 180 to 220 ° C., and the bubbles generated as gas generation marks are included in the bubble-containing resin layer and the impregnation portion, and the density of the bubble-containing resin layer is 0. It can also be 35 to 0.75 g / cm ³ .

  In particular, the bubble-containing resin layer preferably contains a vinyl chloride resin, a layered inorganic compound, and molybdenum compound particles as a main component, and a vinyl chloride resin (a plasticizer is 30 to 100 parts by mass with respect to 100 parts by mass of the vinyl chloride resin). It is preferable that 1.5-10 mass parts of layered inorganic compounds and 1.5-10 mass parts of molybdenum compound particle | grains are included with respect to 100 mass parts of soft composition to contain. As the layered inorganic compound, those described in paragraph [0019] can be used, and similarly, as the molybdenum compound particles, those described in paragraph [0020] can be used. As a result, the sound absorbing effect is improved and, at the same time, the layered inorganic compound is volumetrically expanded by the flame heat at the time of fire to block the penetration of the flame and the leakage of toxic gas, and the residue of the combustion compound particles. By forming the layer (chlorine-molybdenum composite oxide), it is possible to provide nonflammability conforming to the Building Standard Act by increasing the blocking rate of flame penetration and toxic gas leakage and the like.

  In the construction of the sound absorbing film material of the present invention, arbitrary standard sheets of 1 m to 3 m in width and 1 m to 50 m in length are freely combined, and the fabric surface side of the sound absorbing film material is mounted as an incident surface of sound. Especially 1). The sound absorbing film material is about 1m to 3m in width and 1m to 5m in length, and the panels have the sound absorbing film material fixed by aluminum frame (pushing material) in the form of square, rectangle, triangle, rhombus, etc. It can be used as a flat ceiling or geometric solid ceiling by fixing it to a ceiling beam system or suspending it in combination of 2). In addition, one sheet is about 1m to 3m in width and 1m to 10m in length, and the two sides in the width direction are fixed to the ceiling beam or aluminum pressing material, and the sound absorbing film is self weight without tension. It can be used as a design art ceiling that hangs in a loose semi-circular state and expresses the arrangement of semi-circular arcs with multiple sound absorbing film materials, 3). In addition, one sound absorbing film material with a width of about 1 m to 3 m and a length of about 1 m to 5 m is a quadrangle, rectangle, triangle, rhombus, etc. It can be used for design art ceilings that use drapes obtained by controlling the tension by providing a joint nut, etc., and suspending the suspension system to the ceiling beam system using a rope or a spring. 4). The above construction can be applied and used for applications other than ceilings, such as partitions, blinds, sunshades, etc., to ensure a corresponding sound absorption effect.

EXAMPLES Hereinafter, the present invention will be specifically described by way of Examples, but the present invention is not limited thereto. First, the evaluation method of the sound absorbing film material of the present invention will be described.
Sound absorption coefficient
With the woven fabric side of the film material as the incident surface of sound, the arithmetic reduction of the noise reduction coefficient (NRC value) according to JIS A1405 (normal incidence method) 250Hz, 500Hz, 1000Hz, 2000Hz was determined.
<Impregnated part depth>
The embedded part (impregnated part) at five points equally divided into six equal to the width of the film material was determined from the enlarged image of the cross section of the film material, and was determined as a percentage of the thickness of the film material.
<Shared porosity>
When the sound absorbing film material is placed horizontally and observed from the vertical direction, the void portion of the upper fabric and the void portion of the lower fabric overlap with each other to form a common void which penetrates two or three pieces of fabric. The occupancy rate per unit area of the sum was taken as the share of the light transmission part from the monitor image of digital microscope observation, and it was calculated by the computer.
<Air permeability>
It was determined by the Frazier method specified in JIS L1096 8.27.1 A method.
<Flame Retardant Test> (ASTM-E1354: Corn Calorimeter Test Method)
The film material surface was irradiated with 50 kW / m ² of radiant heat from a radiant electric heater for 20 minutes, and in this heat generation test, the total calorific value and heat generation rate for 20 minutes were measured, and the film material appearance after the test was observed.
(A) Total calorific value: 8 MJ / m ² or less was regarded as conforming.
(B) Heat generation rate: A thing which does not exceed 200 kW / m ² continuously for 10 seconds or more.
(C) Appearance observation: A sample without a pinhole depression exceeding 0.5 mm in diameter was regarded as suitable.

Example 1
<Resin coated yarn (1)>
A flat yarn of a multifilament yarn (filament diameter 9 μm, 400 filaments: 75th count: 687 dtex) of alkali-free glass is used as a core yarn, and dipping is performed in a liquid bath of a paste sol composition with a soft vinyl chloride resin of the following formulation 1. The soft vinyl chloride resin paste sol composition is coated on the entire circumference of the multifilament yarn, and then gelled at 180 ° C. to form a resin coating layer, and the height: width ratio in the yarn cross section is A resin-coated yarn (1) having a flat elliptical cross section of 3: 5 and an apparent specific gravity of 2.06 was obtained.
[Composition 1] Soft vinyl chloride resin paste sol composition Emulsion polymerization Polyvinyl chloride resin (polymerization degree 1700) 100 parts by mass 1, 2-cyclohexanedicarboxylic acid diisononyl (plasticizer) 70 parts by mass ※ Brand name: Hexamol DINCH (BASF Company-made)
Epoxidized soybean oil (plasticizer) 5 parts by mass Barium / zinc complex compound (stabilizer) 2 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Layered inorganic compound (montmorillonite: average particle diameter 8 μm) 10 parts by mass calcium molybdate Zinc (molybdenum compound particles) 5 parts by mass Silane coupling agent 2 parts by mass ※ γ-aminopropyltrimethoxysilane (active ingredient 100%)
Benzotriazole (UV absorber) 0.3 parts by mass Titanium oxide (white pigment) 2 parts by mass
<Multifilament yarn (1)>
A multifilament yarn (1) consisting of alkali-free glass multifilament (filament diameter 9 μm: 400 filaments) and having a specific gravity of 2.55 by Taslan yarn 75 No. 75 (687 dtex) subjected to Z twist 25 times / m was used .
Textiles (1)
Single layer woven fabric of 2/2 nad (basket) woven fabric having n as a repeating unit for both warp yarn group and weft yarn group [2 resin coated yarn (1), 2 multifilament yarn (1)] The group has a weave density of 28 per inch (including 14 resin-coated yarns (1)), and the weft group has 30 per 1 inch (of which 15 resin-coated yarns (1) are included) A woven fabric 1 having a porosity of 2%, an air permeability of 45 cc / cm ² / s and a mass of 680 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (1) was 0.49, and the occupied volume ratio of these yarns was 2: 1.

Example 2
Textiles (2)
Double-weave fabric with a density of 36 yarns / inch for resin-coated yarn (1) as warp yarn group and 30 yarns / inch for multifilament yarn (1) as weft yarn group; 2/1 twill weave, lower layer weave 2/1 twill weave, upper layer weave and lower layer weave with 5 straddle connections, co-porosity 0.8% [Fabric 2] having an air permeability of 16 cc / cm ² / sec and a mass of 1300 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (1) was 0.49, and the occupied volume ratio of these yarns was 2: 1.

[Example 3]
Textiles (3)
Upper-layer triaxial woven fabric in which the implantation density of resin-coated yarn (1) as warp yarn group is 30 / inch and the implantation density of multifilament yarn (1) as left oblique upper / right oblique upward bias yarn group is 20 / inch And the lower three layers in which the implantation density of the resin-coated yarn (1) as the warp yarn group is 30 yarns / inch and the implantation density of the multifilament yarn (1) as the left oblique upper / right oblique upward bias yarn group is 20 yarns / inch. The resin-coated yarn (1) of the lower triaxial woven fabric is joined to the multifilament yarn of the upper triaxial woven fabric (1) in a wire connection of 5 layers of the lower triaxial woven fabric and the multifilament yarn of the lower triaxial woven fabric (3) A triaxial double fabric woven by connecting a resin-coated yarn (1) of the upper layer triaxial fabric with (1) wire connection of 5 striations, which has a shared porosity of 0.3% and an air permeability of 6 cc / cm ² / sec, Was obtained in an amount 1650 g / ^{m 2} of [fabric 3]. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (1) was 0.49, and the occupied volume ratio of these yarns was 1: 1.

Example 4
Textiles (4)
The resin-coated yarn (1) and the multifilament yarn (1) are used, and the penetration density of the resin-coated yarn (1) as the warp group is 60 / inch, and the number of the multifilament yarn (1) as the warp group. The upper layer weave is 3/1 and the upper layer weave is 3/1; the middle layer is 3/1 and the lower layer weave is 3/1 1, the upper layer fabric and the upper layer fabric are connected by 5 wire connections, and the middle layer fabric and the lower layer fabric are bonded by 5 wire connections, and the shared porosity is 0.1%, the ventilation rate is 0.1% A fabric 4 with a degree of ² cc / cm ² / s and a mass of 1960 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (1) was 0.49, and the occupied volume ratio of these yarns was 2: 1.

[Example 5]
<Resin coated yarn (2)>
The core yarn of the resin-coated yarn (1) is changed to a flat yarn of polyparaphenylene terephthalamide fiber (aramid fiber: filament diameter 12 μm, 843 dtex), and the liquid of the paste sol composition by the soft vinyl chloride resin of formulation 1 The soft vinyl chloride resin paste sol composition is coated on the entire circumference of the multifilament yarn by dipping in a bath and then gelled at 180 ° C. to form a resin coating layer, and the height of the yarn cross section: Resin-coated yarn (2) having a flat elliptical cross section with a width ratio of 2: 5 and an apparent specific gravity of 1.44 was obtained.
Textiles (5)
A single layer woven fabric of 2/2 nad (basket) woven fabric having a repeating unit of [2 resin coated yarns (2), 2 multifilament yarns (1)] for both warp yarn groups and weft yarn groups The group has a weave density of 24 per inch (including 12 resin-coated yarns (2)), and the weft group is 26 per inch (including 13 resin-coated yarns (2)). A woven fabric 5 having a porosity of 1.6%, an air permeability of 30 cc / cm ² / s and a mass of 625 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (2) and the multifilament yarn (1) was 1.11, and the occupied volume ratio of these yarns was 2: 1.

[Example 6]
Textiles (6)
Double-weave fabric with a density of 32 yarns / inch for the resin-coated yarn (2) as warp yarn group and 30 yarns / inch for the multifilament yarn (1) as weft yarn group; 2/1 twill weave, lower layer weave 2/1 twill weave in upper left, upper layer weave and lower layer weave with 5 striations, and share 0.7% shared porosity [Fabric 6] having an air permeability of 14 cc / cm ² / sec and a mass of 1190 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (2) and the multifilament yarn (1) was 1.11, and the occupied volume ratio of these yarns was 2: 1.

[Example 7]
Textiles (7)
Upper-layer triaxial woven fabric in which the implantation density of the resin-coated yarn (2) as the warp yarn group is 26 / inch and the implantation density of the multifilament yarn (1) as the left oblique upper / right oblique upward bias yarn group is 18 / inch And the lower three layers in which the implantation density of the resin-coated yarn (2) as the warp yarn group is 26 yarns / inch and the implantation density of the multifilament yarn (1) as the left oblique upper / right oblique upward bias yarn group is 18 yarns / inch. The resin-coated yarn (2) of the lower triaxial woven fabric is joined to the multifilament yarn of the upper triaxial woven fabric (1) in a wire connection of 5 layers of the lower triaxial woven fabric and the multifilament yarn of the lower triaxial woven fabric (3) A triaxial double fabric woven by connecting a resin-coated yarn (2) of the upper layer triaxial fabric with (1) wire connection of 5 striations and having a common porosity of 0.4% and an air permeability of 4 cc / cm ² / sec, Was obtained in an amount 1425 g / ^{m 2} of [fabric 7]. The specific gravity difference between the resin-coated yarn (2) and the multifilament yarn (1) was 1.11, and the occupied volume ratio of these yarns was 1: 1.

Example 8
Textiles (8)
Using resin-coated yarns (2) and multifilament yarns (1), the penetration density of resin-coated yarns (2) as a warp group is 52 / inch and the number of multifilament yarns (1) as a warp group The upper layer weave is a 3/1 twill weave, the upper layer weave is a 3/1 twill weave, the middle layer weave is a 3/1 twill weave, and the lower layer weave is a 3/1 1, the upper layer fabric and the upper layer fabric are connected by 5 wire connections, and the middle layer fabric and the lower layer fabric are bonded by 5 wire connections, so that 0.2% shared porosity and ventilation A fabric 8 with a degree of ² cc / cm ² / s and a mass of 1660 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (2) and the multifilament yarn (1) was 1.11, and the occupied volume ratio of these yarns was 2: 1.

[Example 9]
<Multifilament yarn (2)>
A multifilament yarn (2) having a specific gravity of 1.31 of polyparaphenylene terephthalamide fiber (aramid fiber: filament diameter 12 μm, 843 dtex) was used.
Textiles (9)
A single layer woven fabric of 2/2 nad (basket) fabric having a repeating unit of [2 resin coated yarns (1), 2 multifilament yarns (2)] both in warp yarn group and weft yarn group The group has a weave density of 28 yarns per inch (of which the number of resin-coated yarns (1) is 14), and the weft yarn group is 26 yarns per inch (of which 13 is the number of resin-coated yarns (1)) A woven fabric 9 having a porosity of 1.8%, an air permeability of 40 cc / cm ² / s and a mass of 645 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (2) was 0.75, and the occupied volume ratio of these yarns was 2: 1.

[Example 10]
Textiles (10)
Double-weave with a density of 36 yarns / inch for the resin-coated yarn (1) as warp yarn group and 24 yarns / inch for the multifilament yarn (2) as weft yarn group; 2/1 twill weave, lower layer weave 2/1 twill weave, upper layer weave and lower layer weave with 5 striations across the wire to create a shared porosity of 0.6% [Fabric 10] having an air permeability of 12 cc / cm ² / sec and a mass of 1230 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (2) was 0.75, and the occupied volume ratio of these yarns was 2: 1.

[Example 11]
Textiles (11)
Upper-layer triaxial woven fabric in which the implantation density of resin-coated yarn (1) as warp yarn group is 30 / inch and the implantation density of multifilament yarn (2) as left oblique upper / right oblique upper bias yarn group is 16 / inch And the lower three layers in which the implantation density of the resin-coated yarn (1) as the warp yarn group is 30 yarns / inch and the implantation density of the multifilament yarn (2) as the left oblique upper and right oblique upward bias yarn groups is 16 yarns / inch. The resin-coated yarns (1) of the lower triaxial fabric are connected to the multifilament yarns (2) of the upper triaxial fabric by means of a wire connection of 5 layers and the multifilament yarn of the lower triaxial fabric. (3) A three-axis double fabric woven by connecting a resin-coated yarn (1) of the upper layer three-axis fabric in a wire connection of five striations, and having a common porosity of 0.3% and an air permeability of 6 cc / cm ² / sec, It was obtained in an amount 1525g / ^{m 2} of [fabric 11]. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (2) was 0.75, and the occupied volume ratio of these yarns was 1: 1.

[Example 12]
Textiles (12)
The resin-coated yarn (1) and the multifilament yarn (2) are used, and the penetration density of the resin-coated yarn (1) as the warp group is 60 / inch and the number of the multifilament yarn (2) as the warp group The upper layer weave is a 3/1 twill weave, the upper layer weave is a 3/1 twill weave, the middle layer weave is a 3/1 twill weave, and the lower layer weave is a 3/1 1, the upper layer fabric and the upper layer fabric are connected by 5 wire connections, and the middle layer fabric and the lower layer fabric are bonded by 5 wire connections, and the shared porosity is 0.1%, the ventilation rate is 0.1% A fabric 12 with a degree of ² cc / cm ² / sec and a mass of 1860 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (2) was 0.75, and the occupied volume ratio of these yarns was 2: 1.

[Examples 13 to 24]
<Formation of bubble-containing resin layer>
Whip (2 ×) which was mechanically stirred by forcedly agitating air bubbles by mechanical stirring of a soft vinyl chloride resin paste sol composition of the following formulation 2 with a stirrer (a blade formed by combining eight stainless steel wires and fitted with a blade) Clearance coating is applied on one side of 12 types of fabrics 1 to 12 obtained in Examples 1 to 12, wet-coated film with paste is uniformly formed, and electric furnace heating is performed at 180 ° C. for 3 minutes. Gelation treatment and adhesion treatment with the fabric, 225 g / m ² of bubble-containing resin layer (density 0.5 g / cm ³ ) is provided on one side of the fabric 1 to 12, and the bubble-containing resin layer The membrane material of Examples 13 to 24 in which a part penetrated and the depth was 15 to 30% with respect to the thickness of the fabric was obtained.
[Composition 2] Paste sol composition by soft vinyl chloride resin emulsion polymerization vinyl chloride resin (polymerization degree 1700) 100 parts by mass 1, 2-cyclohexanedicarboxylic acid diisononyl (plasticizer) 65 parts by mass ※ Brand name: Hexamol DINCH ( BASF Corporation)
Epoxidized soybean oil (plasticizer) 5 parts by mass Barium / zinc complex compound (stabilizer) 2 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Layered inorganic compound (montmorillonite: average particle diameter 8 μm) 10 parts by mass calcium molybdate Zinc (molybdenum compound particles) 5 parts by mass Silane coupling agent 2 parts by mass ※ γ-aminopropyltrimethoxysilane (active ingredient 100%)
Benzotriazole (UV absorber) 0.3 parts by mass Titanium oxide (white pigment) 2 parts by mass Dimethyl silicone oil (foam regulating agent) 2 parts by mass

All of the fabrics 1 to 12 in Examples 1 to 12 have film strength that can be used as a ceiling film material, and are light in weight that are unlikely to cause serious human damage even if they are dropped in preparation for an earthquake And flexible, in particular, resin-coated yarns effectively absorb sound in the lower frequency range (specifically, less than about 1000 Hz) than multifilament yarns, and at the same time, multifilament yarns. Is a synergetic effect of effectively absorbing sound in a frequency range higher than that of the resin-coated yarn, and made it possible to express the sound absorbing effect (JIS A1405: improvement of NRC value by the vertical incidence method) to noise in a wider area. This is because the NRC value calculated by JIS A1405 (vertical incidence method) is the arithmetic mean value of the sound absorption coefficients of 250 Hz, 500 Hz, 1000 Hz and 2000 Hz, so the sound absorption effect of less than about 1000 Hz by the resin coated yarn and It became a demonstration that the sound absorption effect of 1000 Hz or more was separately expressed by the filament yarn portion, and the NRC value was improved also in comparison with the comparative example. In the case of a fabric with a porosity of 1 to 5%, the effect of the present invention causes the yarn of the fabric to expand in volume by the heat of the ASTM-E1354: corn calorimeter test, whereby the porosity of the fabric is 0 to 0. Since it is closed to 1%, it becomes possible to obtain a nonflammable sound absorbing film material conforming to the Building Standard Law. Moreover, in the fabrics 13 to 24 of Examples 13 to 24 in which the bubble-containing resin layer (density 0.5 g / cm ³ ) was formed on one side of the fabrics 1 to 12, the sound absorbing effect (NRC value) was higher than that of the fabrics 1 to 12 respectively. ) Further improved by 0.9 to 1.3.

Comparative Example 1
The weave structure of the woven fabric 1 of Example 1 is changed, and both the warp and weft groups are resin-coated yarns (1) and 2/2 nab (basket) fabrics using multifilament yarns (1) The weft group has a weave density of 28 yarns per inch (including 7 resin-coated yarns (1)), and the weft yarn group has 30 yarns per inch (including 7 resin-coated yarns (1) A woven fabric 25 having a porosity of 2%, an air permeability of 45 cc / cm ² / s, and a mass of 415 g / m ² , which has a weave density of 5. Although the specific gravity difference between the resin-coated yarn (1) and the multifilament yarn (1) was 0.49, the occupied volume ratio of the resin-coated yarn (1) to the multifilament yarn (1) was 1 By setting the ratio to 2 :, the sound absorption effect was lowered, and at the same time, the tear strength (JIS L1096: Method C trapezoid type) of the film material was also lowered as described below.
Tear strength of [textile 1]: 13 kgf
Tear strength of [textile 25] which is the same woven structure as [textile 1]: 4.5 kgf

Comparative Example 2
The weaving and knitting elements of the woven fabric 2 of Example 2 are changed, and the penetration density of the resin-coated yarn (1) as the warp group is 36 / inch, and the penetration density of the same weft group is 30 by the resin-coated yarn (1). Of double-layer fabric which is 2/1 which is upper layer weave, 2/1 twill weave of upper layer weave, 2/1 twill weave of upper layer weave, 5 layers of upper layer weave and lower layer weave It was joined by wire connection and woven, and a [woven fabric 26] having a common porosity of 0.6%, an air permeability of 8 cc / cm ² / s and a mass of 1435 g / m ² was obtained. Since the difference in specific gravity of yarns was 0 with the same type of woven and knitted elements, the sound absorbing effect was inferior to that of the woven fabric 2 of Example 2.

Comparative Example 3
The weaving and knitting elements of the woven fabric 2 of Example 2 are changed, and the penetration density of the multifilament yarn (1) as the warp group is 42 / inch, and the penetration density of the same weft group is also 36 by the multifilament yarn (1). Of double-layer fabric which is 2/1 which is upper layer weave, 2/1 twill weave of upper layer weave, 2/1 twill weave of upper layer weave, 5 layers of upper layer weave and lower layer weave It was joined by wire connection and woven, and a [woven fabric 27] having a common porosity of 2.6%, an air permeability of 35 cc / cm ² / s and a mass of 985 g / m ² was obtained. Since the difference in specific gravity of yarns was 0 with the same type of woven and knitted elements, the sound absorbing effect was inferior to that of the woven fabric 2 of Example 2.

[Reference Example 1]
<Resin coated yarn (3)>
A multifilamentary filament of alkali-free glass (filament diameter 9 μm, 400 filaments: No. 75: 687 dtex) is used as a core yarn and dipped in a liquid bath of a paste sol composition with a soft vinyl chloride resin of formulation 1 to obtain soft chloride The vinyl resin paste sol composition is coated on the entire circumference of a multifilament yarn, and then gelled at 180 ° C. to form a resin coating layer, and the height: width ratio in the yarn cross section is approximately 1: 1. A resin-coated yarn (3) having an apparent specific gravity of 2.06 and a circular cross section of
Textiles (28)
Resin coated yarns (3) and 2 multifilament yarns (1) are contained as a warp yarn group and a weft yarn group in a basic unit of a woven and knitted element, both the warp yarn group and the weft yarn group [resin coated yarn Single layer fabric made of 2/2 fabric (basket) woven fabric with 2 (2) multifilament yarns (1) 2 n as a repeating unit, and 30 yarns per inch (including resin-coated yarns) The weave density of the number of lines (3) is 15; the weft group has a weave density of 32 per inch (of which the number of resin-coated threads (1) is 16); porosity 2%, air permeability 45 cc / cm ² / s, a mass of 720 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (3) and the multifilament yarn (1) was 0.49, and both the porosity and the air permeability were the same as those of the woven fabric 1. However, the difference in cross-sectional shape of the resin-coated yarn The sound absorption effect tends to be slightly lower than that of the woven fabric 1 of Example 1.

Reference Example 2
<Resin coated yarn (4)>
A multifilamentary filament of alkali-free glass (filament diameter 9 μm, 400 filaments: 75th thread: 687 dtex) is used as a core yarn and dipped in a liquid bath of a paste sol composition with a soft vinyl chloride resin of formulation 3 to obtain soft chloride The vinyl resin paste sol composition is coated on the entire circumference of a multifilament yarn, and then gelled at 180 ° C. to form a resin coating layer, and the height: width ratio of the yarn cross section is 3: 5. A resin-coated yarn (4) having a flat oval cross section and an apparent specific gravity of 2.06 was obtained.
[Composition 3] Soft vinyl chloride resin paste sol composition Emulsion polymerization Polyvinyl chloride resin (polymerization degree 1700) 100 parts by mass 1,2-cyclohexanedicarboxylic acid diisononyl (plasticizer) 70 parts by mass ※ Brand name: Hexamol DINCH (BASF Company-made)
Epoxidized soybean oil (plasticizer) 5 parts by mass Barium / zinc complex compound (stabilizer) 2 parts by mass Antimony trioxide (flame retardant) 10 parts by mass Silane coupling agent 2 parts by mass ※ γ-aminopropyltrimethoxysilane (effective Ingredient 100%)
Benzotriazole (ultraviolet absorber) 0.3 parts by mass Titanium oxide (white pigment) 2 parts by mass ※ 10 parts by mass of layered inorganic compound (montmorillonite: average particle diameter 8 μm) from [formulation 1] and calcium zinc molybdate (molybdenum compound particles ) 5 mass parts omitted
Textiles (29)
Resin coated yarns (4) and 2 multifilament yarns (1) are contained as a warp yarn group and a weft yarn group in a basic unit of a woven and knitted element, and both the warp yarn group and the weft yarn group [resin coated yarn Single layer woven fabric of 2/2 nab (basket) fabric with 2 (2) multifilament yarns (1) 2 n as a repeating unit, with 28 yarns per inch (including resin-coated yarns) Weave density of 14 (line) (4), weft density of 30% for 1 inch (of which 15 lines of resin-coated yarn (4) are woven), porosity 2%, air permeability 45 cc / cm ² / s, a mass of 665 g / m ² was obtained. The specific gravity difference between the resin-coated yarn (4) and the multifilament yarn (1) was 0.47, and both the void ratio and the air permeability were the same as those of the woven fabric 1. However, the heat of the ASTM-E1354: corn calorimeter test The resin-coated yarn can not expand in volume, leaving a void of the entire fabric as it is, and it is an inappropriate membrane material for a building standard law article that can not shut off flame penetration and toxic gas leakage.

  According to the present invention, there is provided a non-combustible membrane material conforming to the Building Standard Act as a ceiling area constituting membrane material (membrane ceiling) and sound absorbing membrane material installed on the ceiling of a building, or a ceiling area constituent member accessory In preparation for disasters, by using a woven fabric made of yarns having different specific gravities, having lightness and flexibility that are unlikely to cause serious personal damage even if the ceiling falls. A fine unit in which weave units different in sound absorption are randomly or regularly scattered on the entire surface of the sound absorbing film material of the present invention by exposing, hiding or sterically crossing yarns of different specific gravities in weave units. The sound absorption effect is expressed by constructing the unit, and in particular, the sound absorption effect in the low frequency region of less than about 1000 Hz by the resin coated yarn, and the medium to high frequency region of about 1000 Hz or more by the multifilament yarn. The sound absorption effect at the same time is separately expressed simultaneously, and the sound absorption effect is excellent without uneven distribution to the whole noise, and the effects by lighting and image projection are also possible, so indoor stadium, gymnasium, indoor pool, event hall, public hall. It can be applied not only to construction of membrane ceilings for ceremonial ceremonies, station buildings, airports, shopping malls, etc., but also for construction of light ceiling membranes, and also to partitions, blinds, sunshade tents and the like.

1: Sound absorbing film material 2: Textile 2-1: Single layer textile 2-2: Double textile 2-3: Triple textile 2-4: Void part 3: Yarn 3-1: Resin coated yarn 3-1 1: Multifilament yarn (core yarn)
3-1-2: Resin coating layer (coating)
3-2: Multifilament yarn 4: Bubble-containing resin layer 4-1: Bubble

Claims (7)

  A woven fabric containing resin-coated yarns and multifilament yarns in a woven or knitted element having a porosity of 5% or less, wherein the specific gravity difference between the resin-coated yarns and the multifilament yarns is 0.25 or more, and both yarns Sound absorption film material characterized in that the occupied volume ratio of 4: 1 to 1: 1.   The woven or knitted fabric element is 1) a warp group and a weft group, or 2) a warp group and a left oblique and right oblique upper bias yarn group, and the woven fabric is a single layer woven fabric, a double woven fabric, and a triple woven fabric. The sound-absorbing film material according to claim 1, which is any one selected from textiles.   The sound-absorbing film material according to claim 1 or 2, wherein the resin-coated yarn has a flat elliptical cross section, and the height: width ratio in the flat elliptical cross section is 3: 4 to 1: 4.   The said resin-coated yarn is comprised with a multifilament yarn and a resin coating layer, The said resin coating layer has thermal expansion property, The said porosity after thermal expansion is obstruct | occluded to 1% or less. The sound absorbing film material according to any one of 3.   The sound absorbing film material according to claim 4, wherein the resin coating layer mainly contains a vinyl chloride resin, a layered inorganic compound, and a molybdenum compound particle. A bubble-containing resin layer having a density of 0.35 to 0.75 g / cm ³ is formed on one side of the fabric, and part of the bubble-containing resin layer infiltrates into the fabric structure, and the depth is the thickness of the fabric The sound absorbing film material according to any one of claims 1 to 5, which is 1 to 35% of the total.   The sound absorbing film material according to claim 6, wherein the bubble-containing resin layer mainly contains a vinyl chloride resin, a layered inorganic compound, and a molybdenum compound particle.