EP3810840A1 - Textile structure based on glass fibers for acoustic ceiling or acoustic wall panel - Google Patents
Textile structure based on glass fibers for acoustic ceiling or acoustic wall panelInfo
- Publication number
- EP3810840A1 EP3810840A1 EP19742837.8A EP19742837A EP3810840A1 EP 3810840 A1 EP3810840 A1 EP 3810840A1 EP 19742837 A EP19742837 A EP 19742837A EP 3810840 A1 EP3810840 A1 EP 3810840A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- acoustic
- textile structure
- particles
- nonwoven mat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004753 textile Substances 0.000 title claims abstract description 32
- 239000003365 glass fiber Substances 0.000 title claims abstract description 17
- 239000002245 particle Substances 0.000 claims abstract description 59
- 230000003068 static effect Effects 0.000 claims abstract description 18
- 238000009826 distribution Methods 0.000 claims abstract description 15
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 11
- 239000011707 mineral Substances 0.000 claims abstract description 11
- 229920001971 elastomer Polymers 0.000 claims abstract description 8
- 239000000806 elastomer Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 8
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000002491 polymer binding agent Substances 0.000 claims abstract description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims abstract description 6
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 4
- 229920005596 polymer binder Polymers 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 35
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 16
- 239000004816 latex Substances 0.000 claims description 14
- 229920000126 latex Polymers 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 8
- 230000002902 bimodal effect Effects 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 claims description 4
- 238000001035 drying Methods 0.000 claims description 4
- 229920003048 styrene butadiene rubber Polymers 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011505 plaster Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 2
- 239000005995 Aluminium silicate Substances 0.000 claims 1
- 239000010459 dolomite Substances 0.000 claims 1
- 229910000514 dolomite Inorganic materials 0.000 claims 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000010521 absorption reaction Methods 0.000 description 8
- 239000000835 fiber Substances 0.000 description 4
- 239000011152 fibreglass Substances 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- OXSYGCRLQCGSAQ-UHFFFAOYSA-N CC1CCC2N(C1)CC3C4(O)CC5C(CCC6C(O)C(O)CCC56C)C4(O)CC(O)C3(O)C2(C)O Chemical compound CC1CCC2N(C1)CC3C4(O)CC5C(CCC6C(O)C(O)CCC56C)C4(O)CC(O)C3(O)C2(C)O OXSYGCRLQCGSAQ-UHFFFAOYSA-N 0.000 description 2
- 239000004354 Hydroxyethyl cellulose Substances 0.000 description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 description 2
- 239000002174 Styrene-butadiene Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 239000011115 styrene butadiene Substances 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000011358 absorbing material Substances 0.000 description 1
- 239000003945 anionic surfactant Substances 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- AIXMJTYHQHQJLU-UHFFFAOYSA-N chembl210858 Chemical compound O1C(CC(=O)OC)CC(C=2C=CC(O)=CC=2)=N1 AIXMJTYHQHQJLU-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- FDENMIUNZYEPDD-UHFFFAOYSA-L disodium [2-[4-(10-methylundecyl)-2-sulfonatooxyphenoxy]phenyl] sulfate Chemical compound [Na+].[Na+].CC(C)CCCCCCCCCc1ccc(Oc2ccccc2OS([O-])(=O)=O)c(OS([O-])(=O)=O)c1 FDENMIUNZYEPDD-UHFFFAOYSA-L 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- SLGWESQGEUXWJQ-UHFFFAOYSA-N formaldehyde;phenol Chemical compound O=C.OC1=CC=CC=C1 SLGWESQGEUXWJQ-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- YLGXILFCIXHCMC-JHGZEJCSSA-N methyl cellulose Chemical compound COC1C(OC)C(OC)C(COC)O[C@H]1O[C@H]1C(OC)C(OC)C(OC)OC1COC YLGXILFCIXHCMC-JHGZEJCSSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4209—Inorganic fibres
- D04H1/4218—Glass fibres
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/002—Inorganic yarns or filaments
- D04H3/004—Glass yarns or filaments
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/8409—Sound-absorbing elements sheet-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
- E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
- E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
Definitions
- the invention relates to a textile structure formed by a non-woven mat of glass fibers coated or impregnated with a layer formed of particles bound by an elastomer or a thermoplastic polymer.
- This textile structure has, due to its open porosity and static resistance to the passage of air, interesting acoustic absorption properties and can be used as a rear faceplate of acoustic ceiling panels or acoustic wall panels.
- acoustic comfort like the idea of comfort in general, is a rather subjective notion. It is generally agreed, however, to define a good acoustic comfort by a good intelligibility of sounds such as human voices or music, a reverb time or too short to avoid the impression of muffled sounds, or too long to avoid an echo residual too marked, and the absence of sounds with excessive sound power.
- the quality of acoustic comfort is mainly governed by the attenuation of sound by means of acoustic absorbing materials, fixed for example to the walls and / or the floor.
- the two most commonly used parameters for assessing acoustic comfort are the reverberation time and the sound absorption coefficient, also known as the Sabine alpha index (a w ).
- the latter is defined as the ratio of the acoustic energy absorbed by a given material to the incident acoustic energy (E a / Ei).
- the Sabine alpha index is determined by diffuse field measurements made according to standard NF EN ISO 354 (Measurement of sound absorption in reverberant rooms) and is calculated according to standard NF EN ISO 1 1654 (Absorbents for use in buildings - Evaluation of sound absorption).
- acoustic ceilings are known, also called “phonic” ceilings, consisting of perforated rigid plates coated on their hidden face with a non-woven mat or a material based on cellulosic fibers, in particular based on paper. , hereinafter referred to as surfacing.
- Rigitone ® ceilings made from perforated plasterboard, and Saint-Gobain Plafometal sells ceilings based on perforated metal plates under the PlafoMetal ® or Gabelex ® brand.
- Rigitone ® backsurfacing is a nonwoven made of cellulosic fibers and polyester fibers.
- the acoustic performance of such ceilings depends mainly on the characteristics of the laminated surfacing, and not on the characteristics of the rigid plate;
- the two surfacing parameters which are decisive for the acoustic performance are the open porosity of the material and the static resistance to the passage of air;
- the open porosity must be greater than a threshold value below which the sound wave does not penetrate the material and is simply reflected by it;
- the static resistance to the passage of air must be between a minimum value and a maximum value.
- the Applicant has developed a textile structure consisting of an acoustic membrane supported by an acoustically transparent non-woven fiberglass mat, and which when laminated to the back side of a perforated ceiling panel or a perforated wall panel significantly improves the acoustic attenuation properties of the panel thus obtained.
- acoustic membrane hereinafter also called “acoustic continuous layer” or more simply “acoustic layer” is constituted mainly
- the acoustic layer is the seat of a continuous porous system (open porosity) which allows the penetration of the sound waves.
- the present application therefore relates to a textile structure, intended to be used as an acoustic absorbing structure in acoustic ceiling panels and / or acoustic wall panels, constituted
- an acoustic continuous layer comprising from 80% to 95% by weight of particles, preferably inorganic, and from 5% to 20% by weight of a thermoplastic and / or elastomeric polymer binder,
- the textile structure having an open porosity greater than 3%, preferably between 4% and 60%, and in particular between 5 and 55%, and a static resistance to the passage of air (determined according to ISO 9053) included between 1000 and 3000 Nsm 3 , said acoustic continuous layer impregnating at less partially said nonwoven mat, and the particle size distribution of the particles having a D 10 of between 0.1 and 0.5 ⁇ m.
- the present application also relates to a method of manufacturing such a textile structure.
- This manufacturing process includes
- thermoset binder having a basis weight of between 20 and 200 g / m 2,
- an aqueous impregnating composition comprising the mixture of 80% to 95% by weight of dry matter of particles, preferably mineral, and 5 to 20% by weight of dry matter of a thermoplastic polymer binder and or elastomer, in latex form, the impregnating composition having a solids content of between 35 and 70% by weight and the particle size distribution of the particles having a D-10 between 0.1 and 0.5 ⁇ m,
- a plate made of a rigid material comprising a plurality of perforations
- the acoustic continuous layer of the textile structure of the present invention is a membrane with open porosity, that is to say a kind of foam where all or almost all the cells are in communication with each other.
- open porosity that is to say a kind of foam where all or almost all the cells are in communication with each other.
- the method that was used to characterize the acoustic layer is based on that described in the article by LL Beranek in "Acoustic impedance ofporous materials". J. Acoust. Soc. Am. 13: 248-260, 1942.
- the open porosity of the foam should be as high as possible. It is indeed at the interface between the walls of the foam and the air in the heart of the foam that the sound is absorbed. The greater the range of this interface, accessible to the sound, the better the acoustic absorption coefficient (a w ).
- the nonwoven fiberglass mat is acoustically transparent, i.e. it has no attenuation or sound absorption function and serves only as a support for the acoustic continuous layer. It gives the textile structure good mechanical strength and makes it easy to handle.
- the nonwoven mat before receiving the acoustic layer, advantageously has a weight per unit area of between 25 and 150 g / m 2 , preferably between 30 and 100 g / m 2 , in particular between 40 and 80 g / m 2 .
- the glass fibers forming the nonwoven mat have a length of between 5 mm and 12 cm, preferably between 1 cm and 1 1 cm, in particular between 1, 5 and 10 cm.
- the average diameter of the glass fibers forming the nonwoven mat is advantageously between 3 and 30 ⁇ m, preferably between 5 and 20 ⁇ m, and in particular between 8 and 15 ⁇ m.
- thermoset polymeric binder for example a binder obtained by curing an acrylic resin or a formaldehyde-based resin such as phenol-formaldehyde, urea-formaldehyde and melamine-formaldehyde resins.
- the binder content of the non-woven mat is generally between 5 and 40% by weight, preferably between 7 and 30% by weight, in particular between 10 and 25% by weight, these percentages being expressed with respect to the total weight of the nonwoven mat, ie based on the sum of the weight of the glass fibers and the weight of the organic binder.
- an aqueous composition comprising the essential ingredients of the acoustic continuous layer, namely the particles and the thermoplastic polymer binder, is deposited on the nonwoven mat of glass fibers described above. or elastomer, the latter being introduced in the form of latex.
- the particles are preferably mineral particles, for example particles based on titanium oxide, magnesium oxide and / or aluminum oxide, particles made of calcium carbonate, or kaolins, dolomites, talc. Particulates of finely ground calcium carbonate are particularly preferred.
- the inventors have found that in order to obtain a layer with a fine open porosity of at least 5% and a static resistance to the passage of air in the range of 1000 to 3000 Nsm 3 , it was possible to play on the water content of the impregnating composition and / or the particle size of the powder of mineral particles.
- These very small mineral particles could be used alone or in combination with larger particles, having median sizes (D 5 o) of between 4 and 25 ⁇ m.
- the particle size distribution of the inorganic particles is a unimodal (with a single maximum) distribution having a volume median diameter (D 50 ), determined by laser particle size, between 0.8. and 1.5 ⁇ m, a D 10 between 0.1 and 0.5 ⁇ m and a D 98 between 5.5 and 6.5 ⁇ m.
- the particle size distribution of the mineral particles is at least a bimodal distribution (two maximums) with a first (maximum) mode between 0.5 and 2.0 ⁇ m and a second mode located between 4 and 25 pm.
- the D 10 is advantageously between 0.1 and 0.5 pm and the D 98 is advantageously between 20 and 150 pm.
- the Applicant has found that the greater the proportion of very small particles having a diameter of between 0.5 and 2 pm, the greater the resistance to the passage of air of the acoustic continuous layer increased. It is thus possible to adjust the static resistance to the passage of air of the acoustic layer by adjusting the fraction of particles having diameters of between 0.5 and 2 ⁇ m.
- Another parameter which makes it possible to adjust the static resistance to the passage of air, and also the open porosity, is the water content of the aqueous impregnating composition used for the formation of the acoustic layer.
- the Applicant believes that the evaporation of water creates in the acoustic continuous layer a network of pores in communication with each other.
- the water content of the impregnating composition and the proportion of very small particles thus constitute two parameters of the manufacturing process which make it easy to adjust the resistance to the passage of air to a value within the claimed range.
- the mineral particles are suspended in water and mixed with a latex in such proportions that the particles represent from 80% to 95% by weight of the solids of the composition and the latex represents from 5 to 20% by weight of the solids of the latex composition.
- the latex is preferably an elastomer latex and in particular a latex based on styrene-butadiene rubber (SBR) or a latex based on acrylic polymer.
- a surfactant generally less than 0.5% of the dry weight of the impregnating composition, to facilitate the dispersion of the particles in the water.
- the Brookfield viscosity (determined at 20 ° C.) of this impregnating composition, at the moment when it is applied to the nonwoven mat, is preferably between 10 and 30 Pa.s.
- Its solids content is advantageously between 45 and 70% by weight, preferably between 50 and 65% by weight, ideally between 55 and 63% by weight.
- the viscosity can easily be adjusted by adding water or by adding a water-soluble organic thickener, for example a water-soluble cellulose derivative, for example hydroxyethylcellulose.
- a water-soluble organic thickener for example a water-soluble cellulose derivative, for example hydroxyethylcellulose.
- the optimum viscosity of the impregnating composition depends on the structure of the nonwoven mat. The more the latter has a closed structure, the more the impregnating composition can be fluid without crossing the non-woven mat. On the other hand, for non-woven mats having a more open structure, it is of course necessary to thicken the impregnating composition.
- the impregnation of the nonwoven mat with the impregnating composition can be done by any technique usually used in the field of textile coating, for example by knife application, by application to the curtain, by immersion, by padding.
- the amount of impregnating composition applied is such that the acoustic continuous layer has, after drying and / or crosslinking, a surface weight of between 100 g / m 2 and 400 g / m 2 , preferably between 150 g / m 2 and 350 g / m 2 , in particular between 200 and 300 g / m 2 .
- the textile structure consisting of non-woven fiberglass mat and the acoustic continuous layer generally has a weight per unit area of between 120 g / m 2 and 500 g / m 2 , preferably between 150 g / m 2 and 400 g / m 2. m 2 , in particular between 200 and 350 g / m 2 .
- the textile structure After drying and / or crosslinking of the acoustic continuous layer, the textile structure is bonded to a single face of a panel or plate having a multitude of perforations.
- the panel or plate is preferably made of one or more materials selected from the group consisting of plaster, metals, plastics such as polyvinyl chloride and wood. Plaster is a particularly preferred material.
- the perforations made in the panel may have any shape, for example circular, triangular, rectangular or irregular. They can all have the same size or different dimensions.
- the surface of each perforation is generally between 0.1 and 5 cm 2 , preferably between 2 and 4 cm 2 .
- These perforations generally occupy from 3 to 50%, preferably from 5 to 30% of the total surface of the panel.
- the resulting laminate panels can be used as acoustic ceiling panels or acoustic wall panels. They are used so that the face bearing the textile structure is on the hidden side of the panel, that is to say the face that is facing the ceiling or the wall of the room or building.
- the acoustic panels of the present invention may optionally bear on their visible face, that is to say on their visible face an acoustically transparent surfacing which serves only to modify the visual appearance of the walls or ceilings.
- aqueous impregnating compositions are prepared by dispersing in water calcium carbonate particles of different particle sizes and a styrene-butadiene latex.
- an anionic surfactant (Dowfax 2A1, alkyldiphenyloxide disulfonate) is added to the dispersion.
- the calcium carbonate powders are obtained from the company Mikhart.
- compositions containing 8.1% by weight (dry matter) of styrene-butadiene latex and 91.5% by weight (dry matter) of calcium carbonate particles are obtained.
- compositions are deposited by knife coating on a nonwoven mat of glass fibers having a surface weight of 50 g / m 2 .
- the nonwoven mat thus coated is dried for 2 minutes at a temperature of 180 ° C.
- the acoustic textile structures obtained have a basis weight of between 140 and 350 g / m2.
- All textile structures have an open porosity of between 10% and 50%.
- Table 1 shows the static resistance to air flow (according to ISO 9053) for different mineral dust powder mixtures and for different solids contents of the impregnating compositions.
- Samples 1 - 3 show that for a powder with a unimodal particle size distribution consisting of very fine particles, the reduction in the water content of the impregnating composition results in a decrease in the static resistance to the passage of air in the layer. acoustic. Samples 4 - 6 show that it is possible to replace a portion of the very small particles with larger particles, lower cost, provided to increase the solids content of the compositions.
- the series of samples 8 - 10 shows that for a bimodal distribution of calcium carbonate particles (MU12 + M10) the static resistance to the passage of air is all the more important that the fraction of very small particles (MU12) is important.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Laminated Bodies (AREA)
- Building Environments (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1854886A FR3081894B1 (en) | 2018-06-05 | 2018-06-05 | TEXTILE STRUCTURE BASED ON FIBERGLASS FOR ACOUSTIC CEILINGS OR ACOUSTIC WALL PANELS |
PCT/FR2019/051295 WO2019234334A1 (en) | 2018-06-05 | 2019-06-03 | Textile structure based on glass fibers for acoustic ceiling or acoustic wall panel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3810840A1 true EP3810840A1 (en) | 2021-04-28 |
Family
ID=63407399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19742837.8A Pending EP3810840A1 (en) | 2018-06-05 | 2019-06-03 | Textile structure based on glass fibers for acoustic ceiling or acoustic wall panel |
Country Status (4)
Country | Link |
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US (1) | US20210115603A1 (en) |
EP (1) | EP3810840A1 (en) |
FR (1) | FR3081894B1 (en) |
WO (1) | WO2019234334A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11541829B2 (en) | 2020-06-18 | 2023-01-03 | Freudenberg Performance Materials Lp | Acoustical baffle |
US11958308B1 (en) | 2023-05-31 | 2024-04-16 | G13 Innovation In Production Ltd | Thermal paper, and methods and systems for forming the same |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5318990A (en) * | 1993-06-21 | 1994-06-07 | Owens-Corning Fiberglas Technology Inc. | Fibrous glass binders |
DE69613290T2 (en) * | 1995-09-01 | 2001-12-06 | Armstrong World Ind Inc | Sound-insulating product with a flat surface and coating agent therefor |
JPH10331286A (en) * | 1997-05-30 | 1998-12-15 | Nippon Steel Chem Co Ltd | Composite acoustical panel |
CA2441141A1 (en) * | 2002-09-30 | 2004-03-30 | Armstrong World Industries, Inc. | Acoustical panel coating and process of applying same |
US7294363B2 (en) * | 2002-12-19 | 2007-11-13 | Owens Corning Intellectual Capital, Llc | Methods of forming decorative veils |
US7745357B2 (en) * | 2004-03-12 | 2010-06-29 | Georgia-Pacific Gypsum Llc | Use of pre-coated mat for preparing gypsum board |
US7566475B2 (en) * | 2004-11-09 | 2009-07-28 | International Automotive Components Group North America, Inc. | Acoustic insulator with controlled airflow resistance and method of making same |
US20070102237A1 (en) | 2005-11-04 | 2007-05-10 | Usg Interiors, Inc. | Acoustical gypsum board for ceiling panel |
US20080014815A1 (en) * | 2006-07-13 | 2008-01-17 | Geel Paul A | Highly filled fibrous veil |
US8100226B2 (en) * | 2009-12-22 | 2012-01-24 | Usg Interiors, Inc. | Porous nonwoven scrims in acoustical panels |
JP2012116569A (en) | 2010-11-09 | 2012-06-21 | Yoshida Industry Co Ltd | Multilayered cosmetic container |
US8684134B2 (en) | 2012-06-27 | 2014-04-01 | Usg Interiors, Llc | Gypsum-panel acoustical monolithic ceiling |
US9243401B2 (en) * | 2014-05-16 | 2016-01-26 | Awi Licensing Company | Acoustic ceiling board with improved aesthetics |
US11885129B2 (en) * | 2016-03-16 | 2024-01-30 | USG Interiors, LLC. | Construction products with an acoustically transparent coating |
US20210363693A1 (en) * | 2017-08-07 | 2021-11-25 | Ocv Intellectual Capital, Llc | Renovation ceiling mat |
CN108384343B (en) * | 2018-02-02 | 2020-12-08 | 长兴科创科技咨询有限公司 | Coating composition capable of absorbing sound and reducing noise |
US11028581B2 (en) * | 2018-12-18 | 2021-06-08 | Awi Licensing Llc | Face coating for acoustical monolithic ceilings |
-
2018
- 2018-06-05 FR FR1854886A patent/FR3081894B1/en active Active
-
2019
- 2019-06-03 WO PCT/FR2019/051295 patent/WO2019234334A1/en unknown
- 2019-06-03 EP EP19742837.8A patent/EP3810840A1/en active Pending
- 2019-06-03 US US17/057,833 patent/US20210115603A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3081894B1 (en) | 2020-09-25 |
US20210115603A1 (en) | 2021-04-22 |
WO2019234334A1 (en) | 2019-12-12 |
FR3081894A1 (en) | 2019-12-06 |
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