CN101946048A - Acoustic absorber with barrier facing - Google Patents
Acoustic absorber with barrier facing Download PDFInfo
- Publication number
- CN101946048A CN101946048A CN2008801272788A CN200880127278A CN101946048A CN 101946048 A CN101946048 A CN 101946048A CN 2008801272788 A CN2008801272788 A CN 2008801272788A CN 200880127278 A CN200880127278 A CN 200880127278A CN 101946048 A CN101946048 A CN 101946048A
- Authority
- CN
- China
- Prior art keywords
- lining
- goods
- sound absorption
- sound
- core
- 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
- 230000004888 barrier function Effects 0.000 title abstract description 9
- 239000006098 acoustic absorber Substances 0.000 title abstract 2
- 238000010521 absorption reaction Methods 0.000 claims abstract description 81
- 239000011148 porous material Substances 0.000 claims abstract description 20
- 244000005700 microbiome Species 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 84
- 238000000034 method Methods 0.000 claims description 33
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 13
- -1 polyethylene Polymers 0.000 claims description 12
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 239000002184 metal Substances 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 230000003115 biocidal effect Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 2
- 239000006096 absorbing agent Substances 0.000 abstract description 44
- 239000004751 flashspun nonwoven Substances 0.000 abstract description 12
- 229920001474 Flashspun fabric Polymers 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 5
- 239000011358 absorbing material Substances 0.000 abstract description 4
- 230000003749 cleanliness Effects 0.000 abstract 1
- 230000001427 coherent effect Effects 0.000 abstract 1
- 230000009102 absorption Effects 0.000 description 60
- 239000004744 fabric Substances 0.000 description 39
- 239000000835 fiber Substances 0.000 description 16
- 239000010410 layer Substances 0.000 description 12
- 210000003205 muscle Anatomy 0.000 description 11
- 238000012360 testing method Methods 0.000 description 10
- 239000004753 textile Substances 0.000 description 9
- 239000000243 solution Substances 0.000 description 8
- 238000009987 spinning Methods 0.000 description 7
- 239000000428 dust Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 230000002706 hydrostatic effect Effects 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 6
- 229920000098 polyolefin Polymers 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 3
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000002657 fibrous material Substances 0.000 description 3
- 239000003365 glass fiber Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004745 nonwoven fabric Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000002023 wood Substances 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000877 Melamine resin Polymers 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009408 flooring Methods 0.000 description 2
- 229920002313 fluoropolymer Polymers 0.000 description 2
- 239000004811 fluoropolymer Substances 0.000 description 2
- 229920001519 homopolymer Polymers 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 238000001465 metallisation Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000002459 porosimetry Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 230000003252 repetitive effect Effects 0.000 description 2
- 238000012552 review Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- SAPGTCDSBGMXCD-UHFFFAOYSA-N (2-chlorophenyl)-(4-fluorophenyl)-pyrimidin-5-ylmethanol Chemical compound C=1N=CN=CC=1C(C=1C(=CC=CC=1)Cl)(O)C1=CC=C(F)C=C1 SAPGTCDSBGMXCD-UHFFFAOYSA-N 0.000 description 1
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical group C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000004821 Contact adhesive Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 229920005830 Polyurethane Foam Polymers 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 241000235342 Saccharomycetes Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000001857 anti-mycotic effect Effects 0.000 description 1
- 239000002543 antimycotic Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000007701 flash-distillation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000000774 hypoallergenic effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229920004889 linear high-density polyethylene Polymers 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000004750 melt-blown nonwoven Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013008 moisture curing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001470 polyketone Polymers 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920001955 polyphenylene ether Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000011496 polyurethane foam Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920000638 styrene acrylonitrile Polymers 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 150000003673 urethanes Chemical class 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000003039 volatile agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- E04B2103/00—Material constitution of slabs, sheets or the like
- E04B2103/04—Material constitution of slabs, sheets or the like of plastics, fibrous material or wood
Abstract
An acoustic absorber includes a core of acoustically absorbing material having two major surfaces, and a facing for covering the core on at least one major surface. The facing comprises a porous flash spun plexifilamentary film-fibril sheet having a coherent surface and comprising a plurality of pores having a pore diameter between about 100 nm and about 20,000 nm and a mean pore diameter of less than about 20,000 nm. The use of the facing improves the acoustic absorption of ambient sound at a frequency below about 1200 Hz. The facing provides a barrier to moisture and particles including microorganisms so that the absorber is suitable for use in environments in which cleanliness is critical.
Description
Background of invention
1. invention field
The present invention relates generally to a kind of sound absorber, in particular for the sound absorber of interior of building.
2. association area is described
Sound absorption material is used for reducing given space, and for example the noise content and/or the reverberation of interior of building are well known in the art.Sound absorption material promptly has the material of high absorption coefficient, reduces noise by absorbing acoustic energy.Sound absorption material is of a great variety.Modal a kind of fibrous material that utilizes is by the acoustic energy that dissipates of the friction in the space between fiber.In general, the thickness of sound absorber is thick more, density is high more, and then its sound absorption property is strong more, especially when low frequency, for example below about 500Hz.Therefore, the known solution that under low frequency, realizes considerable absorption both expensive often.Many known sound absorption materials are formed by fluffy fiber material (comprising conpressed fibers, recycled fiber or cheap material, glass fiber or mineral fibers wadding and felt) not fixed or that part is fixed, and these materials all need lining to hold the fibrous material core.Though comparatively cheap usually also the effective solution of sound absorber for absorbing sound in the wide frequency range based on fiber, but also there is intrinsic shortcoming in they, for example particle may be discharged in the air, pile up dust and go up on its surface or the space in can be because of cleaning breed bacteria and mould.Perforation and micropunch material that other known sound absorption cores can comprise foam, have the material of honeycomb structure, utilize additional air gap to absorb sound.Most of known sound absorbers also needing protection property and/or ornamental lining to be used for interior of building.
The lining that is used to cover the sound absorption core plays durable obducent effect, handle, use or safeguard during the weak structure of protective core.The lining of wishing the covering sound absorption material is the sound absorption with the enhancing sound absorber of entrant sound or sound absorption, and the lining of reflect sound can improve environmental noise unfriendly.The known lining that is used to cover sound absorption material has two classes: impermeability film and perforated membrane (referring to, for example D.A.Bies and C.H.Hansen, " Engineering Noise Control.Theory andPractice ", second edition, E﹠amp; FN Spoon.London, New York, the 249th page).Impermeability film (being generally 6 to 35 microns) lining is entrant sound under low frequency and intermediate frequency, but is reflect sound under high frequency, so they do not allow sound wave to pass through.The film lining also has durability and is not enough to keep critical defect used in everyday, therefore should further protect by the entrant sound surface of solids.Regrettably, this makes the cost that structure becomes more complicated and increased solution.The example of common lining comprises fabric, nonwoven sheet, paper wood, film and the perforation surface of solids (panel).
The waterproof sound absorber is well known in the art, and wherein sound absorber is coated with film waterproof or impermeability, and is for example at United States Patent (USP) 6,197, disclosed a kind of in 403.Yet the film lining has the not enough shortcoming of durability, to such an extent as to can't be as the finished surface of sound absorption goods.And the film lining can't provide enough sound absorptions under the upper frequency of the voice frequency range of expecting most.
The dipping Woven fabric also has been used as the waterproof fabrics of sound absorber.The 3478-VS-2 type that derives from Alpha Associates is coated with the example that the vinyl glass fiber is the dipping waterproof fabrics.Derive from Carnegie Fabrics's
Be an example of sound-absorbing flooring, it is a polyolefine fabric woven, heavy calendered multiple.In general, impregnate fabric manufacturing cost costliness, thickness and weight is big, can reflect sound under intermediate frequency or high frequency, and tends to discharge VOC gas, unless use other additive, otherwise also can support the growth of mould and bacterium.
U.S. Patent Application Publication 2006/0065482 discloses a kind of non-woven sound insulation materials that comprises non-woven layer, and described non-woven layer has the low surface tension fluids repellency to be handled.Wherein disclosed fabric or the fleece of concrete non-woven material that is used for non-woven layer for obtaining by meltblown, spun-bond process, air lay method and carding method.United States Patent (USP) 5,824,973 disclose a kind of sound absorption layered product, and described sound absorption layered product has: porous is isolated substrate, and paper wood, fabric or the perforated films lining sheet material of gas-flow resistance between 200 and 1210 Rayleighs.These known floorings have the shortcoming that is easy to encroached water, dust, mould and microorganism, thereby have limited their application in the vital indoor purposes of air quality.Expectation has the sound absorption material that is applicable to multiple severe rugged environment, that these sound absorption materials have is durable, waterproof, hypoallergenic former, can clean, not fall hair, do not discharge gas and can prevent that moisture, dust, mould and microorganism from invading, the lining of harmless acoustical absorptivity in people's voice frequency range simultaneously.Also expectation has the high acoustic absorption material that effectively and not can significantly increase thickness, density and cost under low frequency.In addition, also expect this type of sound absorption material printed pattern image and/or literal thereon.
Summary of the invention
According to an embodiment, the present invention relates to a kind of sound absorption goods, described sound absorption goods comprise:
Sound absorption material core with two first type surfaces; With
Be used at least one first type surface covering the lining of core, this lining comprises that the porous with adhesive surface dodges the film-fibril strands sheet material that spins the clump silk, and this lining has and is not more than about 140g/m
2Basic weight and comprise a plurality of holes, these holes have between about 100nm and about 20, the aperture between the 000nm and less than about 20, the average pore size of 000nm.
According to additional embodiment, the present invention relates to have composite member, sound-absorbing partition and the acoustic construction surface covering of the sound absorption goods that are encapsulated in the entrant sound stiff case.
According to another embodiment, the present invention relates to strengthen the method for sound absorption property in the environment, described method comprises:
(a) provide the sound absorption goods that comprise the sound absorption material core, the lining that this core dodges the film-fibril strands sheet material spin the clump silk by the porous with adhesive surface covers, and described lining has and is not more than about 140g/m
2Basic weight and comprise a plurality of holes, these holes have between about 100nm and about 20, the aperture between the 000nm and less than about 20, the average pore size of 000nm; And
(b) these goods are placed environment, make ambient sound be absorbed by described goods.
The accompanying drawing summary
Fig. 1 is a chart of describing to dodge sound absorption, reflection and the sound transmission (sealing is measured) of spinning nonwoven sheet.
Fig. 2 is a chart of describing to dodge sound absorption, reflection and the sound transmission (echoless measurement) of spinning nonwoven sheet.
Fig. 3 has comparison diagram according to the sound absorption coefficient of the sound absorber of lining of the present invention for a kind of sound absorber that does not have a lining and two kinds.
Detailed Description Of The Invention
Term " absorbability " and " sound absorption " refer to generally that in this article material absorbs the ability of incident acoustic wave.
Sound absorbing products of the present invention comprises the sound absorption core and covers its at least one lip-deep non-woven fabric. Fabric has excellent barrier property, can not hinder the sound absorption of absorbent core simultaneously. In addition, non-woven fabric has also strengthened the sound absorption of goods in low frequency and intermediate frequency range. Non-woven fabric comprises that the sudden strain of a muscle with adhesive surface spins the film-fibril strands sheet material of clump silk. So-called " adhesive surface " refers to that sheet surface is by fixed and/or bonding. Adhesive method can be any method as known in the art, includes but not limited to hot calender, through-air bonded and point bonding. Core and fabric are optionally bonded to one another by any known suitable bonding technology, such as adhesives, solvent bonding, ultrasonic bonding, hot adhesion, loop bonding method etc.
The sound absorption core comprises any known sound-absorbing material and/or air gap. Measure (no air gap) according to ASTM C423 installation method A, core has the noise reduction coefficient (NRC) between about 0.3 and about 0.9. Suitable sound-absorbing material comprises: supatex fabric, for example viscose non-woven material, carded nonwoven, needled punched nonwoven material, air lay non-woven material, wet-laying non-woven material, spunlaced nonwoven material, melt-blown non-woven material, spunbond-as to melt and spray-spunbond composite nonwoven material; Woven fabric; Knit goods; Three dimensional network comprises honeycomb and foam; Their combination etc. Term " non-woven material " refers to comprise the fleece of the fiber of many random distribution. Fiber can be short fiber or continuous fiber. Fiber can comprise a kind of material or multiple material, also can be the combination of different fibers, or comprises respectively the combination of the like fibrous of different materials. Other materials that are suitable for use as core are foam, for example perforate melamine foamed plastic, polyimides, polyolefin and polyurethane foam; And perforated sheets. According to the preferred embodiments of the invention, core is substantially free of VOC (VOC). A kind of preferred material is not for containing the glass fibre wadding of formaldehyde. Can play the effect of absorbent core through the air gap of fabric covering.
The entrant sound fabric that uses with sound absorber is well known in the art. This type of fabric has the aperture area between about 5% and about 50% usually, and namely the area in upper hole, surface or hole specifically depends on the demand to sound absorption property with respect to the percentage of total surface area. If do not require high-frequency absorption, 5% to 15% aperture area is (the M.D.Egan Architectural Acoustics) that suits so. The percentage of aperture area and the diameter in hole are by determining critical frequency (sound absorption property thereafter the frequency of rapid decrease) to affect entrant sound.
The example of known entrant sound fabric comprises woven webs, low-density fabric, non-woven scrim and the perforation surface of solids. The shortcoming of this type of fabric is that barrier (for example anti-water, dust and/or microorganism invasive) is extremely low.
Be used for the fabric high resistance water of sound absorber of the present invention and the intrusion of fine particle (comprising microorganism). Surprisingly, fabric of the present invention has high porosity. Former, it is believed that high barrier and high porosity oppose each other, can not realize in same structure. The void fraction of fabric (overall porosity) namely 1 deducts solid fraction, between about 0.5 and about 0.7. By mercury injection method (H.M.Rootare, " A Review of Mercury Porosimetry ", AdvancedExperimental Techniques in Powder Metallurgy, Plenum Press, 1970, the 225th to 252 page) record, fabric has between about 100nm and about 20, between the 000nm, even the aperture between about 100nm and about 1500nm. With regard to purpose of the present invention, these holes comprise the hole of fibrous inside and the hole between the fiber. The hole of fibrous inside is in whole fibrous inside random distribution and have about 20nm to the average pore size of about 500nm. Hole between the fiber is the space of random distribution between the fiber in the film-fibril strands sheet material of clump silk. The loose structure of the film-fibril strands sheet material of clump silk is made up of this hole of two types, thereby forms tortuous pore structure, rather than is present in the through-hole structure in the prior art fabric of machine drilling. The average pore size of fabric of the present invention is less than about 20,000nm, even less than about 5,000nm, even less than about 2,000nm, even less than about 1,000nm and even between about 10nm and about 1, between the 000nm. With regard to some purposes, for example wherein absorbing material does not contain dust or supports the situation of the nutriment of growth of microorganism, maybe advantageously fabric is carried out machine drilling with Unclosing structure and increases the critical frequency value.
With regard to some purposes, but wish the fabric microbial barrier of sound absorber, comprise bacterium, virus and mould. Measure according to ASTM F2638-07 and ASTM F1608, fabric have at least about 2 or even at least about 4 logarithm drop-out value (LRV), this value is measured for the microbe filter ability. Wish LRV and flow or the time-independent of fabric, so that fabric has stable barriering efficiency, and can in use not pass in time and the resistance increase that for example the laminated paper situation with known is the same. Fabric does not also contain the nutriment of supporting microorganism (comprising bacterium, saccharomycete and fungi) growth, need not any additional antibiotic or antimycotic processing.
The non-woven lining that is used for sound absorber of the present invention comprises the film-fibril strands sheet material of the clump silk that forms by flash-spinning, also is called interchangeably in this article and dodges film-fibril strands sheet material or the flash spun sheet that spins the clump silk.Non-woven lining of the present invention is in light weight, thin and solid.The basic weight of lining is less than about 140g/m
2, even between about 34g/m
2With about 120g/m
2Between.The thickness of lining is no more than about 1mm, even between about 0.02mm and about 0.40mm, even between about 0.10mm and about 0.25mm.Used before impermeability pellicular front material obviously thinner (for example approximately less than 0.035mm) is to guarantee seeing through acoustic energy under intermediate frequency or high frequency.These materials almost do not have sound absorption property under intermediate frequency or high frequency, and intensity and durability are obviously lower than lining of the present invention.Sudden strain of a muscle textile fabric according to the present invention can be given the isotropism intensity and the durability of height, and this is extremely important to product manufacturing and processing and stable long-term behaviour.Measure according to ASTM D5035, the preferred tensile strength of lining on vertical and horizontal all is not less than about 20N/2.54cm.
It is generally acknowledged with regard to effective sound absorption, material should have bigger thickness, density and porosity, Fig. 1 shows when testing with closed configuration in impedance tube, near 1.0, does not detect sound absorption as the sound reflection coefficient of the flash spun plexifilamentary sheet material of non-woven lining.By contrast, as shown in Figure 2, same flash spun plexifilamentary sheet material shows wide sound absorption surprisingly, this by under low frequency and the intermediate frequency range (for example between 200 and 1200Hz between) absorption coefficient and the lower acoustical reflection between 0 and 0.2 obtains proving during test in echoless structure (having air gap in the impedance tube behind sheet material).Think only have the thick material of continuous through hole and thick perforation lining and just can serve as sound absorber near the resonance frequency (He lmholtz resonator) in each hole and when behind lining, having the sealing air gap before.Surprisingly, have been found that, do not have through hole and than typical perforation lining in the industry thin Duo but unlike impermeability film lining commonly used thin sound absorber lining strengthened under relative broad range low frequency and the intermediate frequency sound absorption and big be entrant sound in voice frequency range, as shown in Figures 2 and 3.
Flash spun sheet is made by following general technology, and this technology is also at United States Patent (USP) 3,860, announces to some extent in 369.Flash-spinning technology has except that steam orifice and is therefrom shifting out in the chamber of opening of sheeting prepared in the technology and carry out.Under HTHP, prepare polymer solution and offer chamber.The pressure of solution is higher than cloud point pressure, and the latter is dissolved in spin agent fully for polymer, forms the minimum pressure of even single-phase mixture.Single-phase polymer solution enters in (or lax) chamber of lower pressure by lax aperture, and wherein solution is divided into the two-phase liquid-in-liquid dispersions.One of dispersion is the rich spin agent phase that mainly comprises spin agent mutually, and another of dispersion is mutually for comprising the polymer-rich phase of most of polymer.Make this two-phase liquid-in-liquid dispersions force to enter the zone of pressure much lower (preferred atmosphere pressure) by spinning head, spin agent is evaporated (flash distillation) rapidly in this zone, and polyolefin comes out to form the clump silk from spinning head, and they sink to forming flash spun sheet.In flash process, impurity is removed along with spin agent is flashed, and makes that the flash spun sheet of gained is free from foreign meter.
As used herein term " Cong Sizhuan " or " clump silk " be meant random-length and have less than about 4 microns average fibril thickness with less than the three-dimension integrally net that is a large amount of thin, the band-like film fibril of about 25 microns intermediate value width.In clump silk structure, film-fibril strands aligns with the longitudinal axis of structure usually coextensively, and its irregular interval of respectively sentencing on whole length, width and the thickness of structure is connected intermittently and separates to form the continuous three-dimensional net.At United States Patent (USP) 3,081, this class formation has been described in more detail in 519 and 3,227,794.
Sheet material is fixed, and this relates between band and fixed roller and sheet material to be pressed into the structure with the intensity that is enough to chamber outside processing.Outside chamber, sheet material is collected on the wind-up roll then.Can adopt methods known in the art, for example hot adhesion, through-air bonded and point bonding comprise patterning bonding or the embossing sheet material that bonds.Sheet material can be bonded to different degree, precondition is to form adhesive surface.
The diameter (promptly between about 4 microns and about 25 microns) of the film-fibril strands of sudden strain of a muscle textile fabric is in the scope of ultrasonic wave wavelength.Under the frequency between about 100Hz and the about 1600Hz, the big several number magnitude of the diameter of the wavelength ratio film-fibril strands of sound.Yet, strengthened sound absorber surprisingly between about 100Hz and about 1600Hz according to the film-fibril strands of the clump silk of lining of the present invention, even in the sound absorption between about 100Hz and about 1200Hz.This is the most frequent frequency range of being sent by plant equipment and voice, therefore appears at interior of building with worthless noise the most frequently.Not bound by theory, it is believed that the pore-size distribution of film-fibril strands of the clump silk of flash spun sheet provides tortuous path for sound wave, and in the sound absorption that sheet material has been strengthened sound absorption material core or air gap during as at least one lip-deep lining of core.In addition, find surprisingly that also flash spun sheet shows high gas-flow resistance, and is more much higher than porous lining of the prior art.
Can prepare polymer bag polyolefin according to sound absorption goods lining of the present invention (polyethylene for example, polypropylene, polymethylpentene and polybutene), acrylonitrile-butadiene-styrene (ABS) (ABS) resin, polystyrene, styrene-acrylonitrile, styrene-butadiene, phenylethylene-maleic anhydride, vinyl plastics (for example polyvinyl chloride (PVC)), acrylic acid, the acrylonitrile group resin, acetal, (per) fluoropolymer, the hydrogen fluoropolymer polymer, polyamide, polyamidoimide, aromatic polyamides, polyarylate, Merlon, polyester (for example PEN (PEN)), polyketone, polyphenylene ether, polyphenylene sulfide and polysulfones.Preferably polyolefin, for example polyethylene and polypropylene in these polymer.Term " polyethylene " not only comprises the homopolymers of ethene as used herein, but also comprises wherein at least 85% the repetitive copolymer from ethene.Preferred polyethylene is a linear high-density polyethylene, and it has about 130 to 137 ℃ melting range upper limit, and 0.94 to 0.98g/cm
3Density in the scope, and between between 0.1 to 100, the melt index between 0.1 and 4 (by ASTM D-1238-57T condition E definition) preferably.Term " polypropylene " not only comprises the homopolymers of propylene as used herein, but also comprises wherein at least 85% the repetitive copolymer from propylene units.
Non-woven lining can also comprise known UV stabilizing agent, antistatic additive, pigment and/or the fire retardant in the polymer of the fiber that is dispersed in nonwoven substrate.
Lining of the present invention has the desirable combination of barrier (that is, anti-water, dust and/or microorganism invasive) and porosity, thereby obtains being higher than air-flow or the permeability and the good acoustical behavior of impermeability film.Sound absorption property depends on acoustic impedance, and acoustic impedance is by the complex combination decision of acoustic resistance and acoustic reactance.Acoustic reactance is to a great extent by the material thickness decision, and acoustic resistance is then by the air-flow decision by material.For the entrant sound lining, need bigger porosity.On the other hand, for the resistive and liquid of the particle of lining was resistive, barrier was again required.
Can comprise the single or multiple lift flash spun sheet according to lining of the present invention, only property otherwise influence absorbs sound.The multi-layer sheet embodiment also can be used in the equalization single sheet inequality that the directionality because of uneven sheet thickness or sheet material fiber produces.Two or more sheet materials can be placed face-to-face, and under impressed pressure (for example by roll extrusion sheet material between one or more pairs of mip rolls) slightly hot adhesion prepare the laminated multi-layer body.The layered product of sheet material preferably prepares by with adhesive (for example contact adhesive) a plurality of sheet materials being bonded together.Adhesive also can use between lining and absorbent cores.Practical adhesive is for keeping those of enough laminate structure integrality in normal process with between the operating period.Practical adhesive includes but not limited to moisture cure urethanes, solvation polyurethane binder and water soluble acrylic acid.
Can carry out metalized to non-woven lining, this may be required for providing certain aesthetic property, light reflective and/or electromagnetic shielding for sensitive equipment or security article.Representative metal comprises aluminium, tin, nickel, iron, chromium, copper, silver, gold, zinc or its alloy, and wherein aluminium is preferred.Can wherein under vacuum, make the metal vaporization by known vacuum metallization processes deposition techniques metal, metal is deposited on the face of nonwoven sheet with the thickness greater than 15nm by heating.Metal can about 15nm to about 1 micron thickness with monolayer deposition, or adopt multilayer with thickness deposition greater than 1 micron.The vacuum metallization processes that polyolefin sheets is spun in sudden strain of a muscle is known, and for example United States Patent (USP) 4,999, described in 222.In this embodiment, do not changing basically under the situation of nonwoven sheet general thickness, the minute surface reflecting surface thin layer is being added on the face of nonwoven sheet.Metal level can be protected by outside coating of organic material; these materials are selected from organic polymer, organic oligomer and combination thereof; for example polyacrylate polymers and oligomer; coating is passed through such as United States Patent (USP) 7; 157; known method vapour deposition described in 117 is to metal level, and thickness is between about 0.2 micron and 2.5 microns.
Lining can also comprise functional surface coating or surfacing, for example antistatic treatment, coat of colo(u)r, gloss layer, antibiotic layer or photosensitive layer.
Sound absorber of the present invention can be used to effectively to absorb and/or reduce for example acoustic energy in the architectural space of enclosure space.This sound absorber can be used as the building inner surface, for example places wall or ceiling, overburden, dividing plate or building interior member (for example pillar) in the three dimensions (for example room).Sound absorber of the present invention can place in porous, entrant sound framework or the cage structure in order to avoid be subjected to serious physical damnification.Sound absorber can with unite use such as common building unit such as floor, wall, ceiling with such as the assembly of mobile traffics such as motor vehicles, train, aircraft, or as industrial equipment, have the utensil of moving-member and the assembly of computer.Sound absorber of the present invention especially can be used for IAQ (indoor air quality) and cleannes are required for example to be used for school, hospital, toilet etc. in the harsh indoor environment.Because flash process during the lining flash-spinning, the lining of gained is free from foreign meter and can not discharge the gas of any volatile compound.In addition, this lining can not fall hair, because the height of single film-fibril strands is fixed and can release particles or fiber in sheet structure.In addition, the sound absorption core preferably is substantially free of VOC.
Lining can clean by wiping or washing.Lining also can be by known method sterilization, and these methods comprise solution cleaning, physical energy radiation or gaseous sterilization.Over there the material clean and sterilize inconvenience situation under, cost that can be extremely low and manpower will dodge textile fabric and abandon and change.
As described before, dodge textile fabric and also can bond in addition by any known bonding technology.After the bonding, lining can have the surface flatness of various degree.Lining can be very smooth, to such an extent as to have the Parker surface flatness that is lower than 5 microns, maybe can have the Parker surface flatness that is not less than 6 microns for coarse.Rough surface can have various three-dimensional surface feature, and they are distributed on the whole fabric surface randomly or with the order of special layout.
The lining of sound absorber also can be printed on graphic designs, and for example image and/or literal are to satisfy the requirement attractive in appearance of desired use.It is suitable to change image and/or literal to change lining and be.By changing lining, can be easily and change the aesthetic property of sound absorber at an easy rate.
The present invention can also comprise that but the stiff case of entrant sound is to protect and to seal sound absorber.Housing can for example derive from E.I.du Pontde Nemours and Company (DuPont), Wilmington, Del.'s for perforated metal, perforated plastic or perforation solid potting resin material
Material, it comprises the acrylic substrate of filling hibbsite (ATH).
The present invention also comprises a kind of method that strengthens sound absorption property in the environment, described method comprises: the sound absorption that comprises sound absorption material core goods (i) are provided, this core is covered by the lining of the flash spun sheet with a plurality of holes, wherein these holes have between about 100nm and about 20, between the 000nm even the diameter between about 100nm and about 1500nm, and wherein these holes have less than about 20,000nm even less than about 5,000nm even less than about 2,000nm even less than about 1,000nm even between about 10nm and about 1, the average pore size between the 000nm; (ii) these goods are placed environment, make ambient sound be absorbed by described goods.
Embodiment
Method of testing
Basic weightMethod by ASTM D 3776 is measured, sample size improved, and with g/m
2Be the unit record result.
Hot strengthMeasure according to ASTM D5035, and be the unit record result with N/25.4cm.
Gurley Hill porosityMeasure according to TAPPI T460, and be the unit record result with the second.
The Fu Leize air penetrabilityAccording to ASTM D737-75 with CFM/ft
2Count, under the pressure reduction of 125Pa, measure.
Hydrostatic headMeasure according to AATCC TM 127, DIN EN 20811, wherein test rate is per minute 60cm H
2O.
The Parker surface flatnessMeasure under the clamping pressure of 1.0MPa according to TAPPI 555, and be the unit record result with the micron.
The air-flow resistivityEqual the flow line speed that the air pressure difference of sample both sides records divided by the sample outside, and with Ns/m
3Be the unit record result.The value of this paper record is measured according to air penetrability as described below and is determined.Volume air-flow Q adopts following formula to pass through the air penetrability of sample under 125Pa pressure reduction divided by sample area (38cm
2) calculate: Q (m
3/ s)=0.000471947 * (air penetrability (CFM/ft
2)/area (ft
2)).Gurley Hill porosity (second) is used for the material than low-permeable.Just less than 101g/m
2Flash spun sheet, 0.6m
3/ min/m
2(2ft
3/ min/ft
2) corresponding about 3.1 seconds of Fu Leize air penetrability; Therefore, herein the Fu Leize air penetrability of sample (with CFM/ft
2Meter) is approximately 3.1/GurleyHill porosity (in second).
Then, by with pressure reduction divided by air-flow Q calculated gas flow resistance (with Pa-s/m
3Be unit).At last, by with gas-flow resistance divided by sample area calculated gas flow resistivity (with Ns/m
3Be unit).
What Fig. 1 and Fig. 2 reported
Transmission, reflection and absorption coefficientIn the impedance tube structure of echoless and sealing, measure according to ASTM E1050 and ISO 10534.
Reported among Fig. 3
Sound absorption coefficientEmploying comprises that the laboratory of the reverberation room that meets ASTM C 423 sample mounting method A (no air gap) is provided with, and measures according to ASTM E 795.In 1 inch high aluminum test frame, sound absorber is placed on the reverberation room floor.Adopt the fabricbase adhesive tape that the edge of testing jig is sealed on the floor to eliminate the side direction noise.The measurement of sound absorption property is carried out under the third-octave band of 000Hz 80 to 5.Each microphone position carries out ten attenuation measurements.
Noise reduction coefficientWith according to ASTM C423 250,500,1000,2,000 and 4, the mean value calculation of the sound absorption coefficient that records under the 000Hz.
PorosityObtain by known mercury injection method with pore size distribution data, this method as by H.M.Rootare at " A Review of Mercury Poros imetry ", AdvancedExperimental Techniques in Powder Metallurgy, the 225-252 page or leaf, disclosed among the PlenumPress (1970).
Overall porosityEstimate according to basic weight, thickness and density of solid according to following formula:
Porosity=1-((basic weight/density of solid * thickness))
Microbe filter efficientMeasure according to ASTM F2638-07 and ASTM F1608.The barriering efficiency of logarithm drop-out value or LRV characterization of membrane is also definite by following test.This test can use polystyrene particle and actual spore to the test of throwing down the gauntlet property of film.
Hydrostatic headMeasure according to AATCC TM 127, DIN EN 20811, and with cm H
2O is the unit record result.
Embodiment 1-2
According to sound absorber core of the present invention adopt the perforate melamine foamed plastic (derive from IllbruckAcoustic Inc., Minneapolis, Minnesota) layer forms, this layer has thickness, the 9.4kg/m of 13mm
3Basic weight and the air-flow resistivity of 120 Rayleighs.With thickness is that 0.1mm, basic weight are 17g/m
2Nylon 6,6 spunbond scrim be laid on the both sides of foam, the argyle design that adopts about 11cm * 11cm then is with both quiltings together.The embodiment sound absorber is by following laminating method preparation.By cylinder with vinyl acetate water-base cement (deriving from efi Polymers, Denver, the WA 2173 of Colorado) with about 0.3kg/m
2Speed be coated on the surface of quilting froth bed.To have 20mm thickness, 0.33kg/m
2The meltblown polyester non-woven layer of basic weight and 130 Rayleigh air-flow resistivitys is laminated on the quilting froth bed to form the sound absorber core.Will be with trade name
The sudden strain of a muscle that type derives from DuPont is spun non-woven lining and is wrapped in around the core to form the sound absorber of embodiment 1.Will be with trade name
The sudden strain of a muscle that type derives from DuPont is spun non-woven lining and is wrapped in around the core to form the sound absorber of embodiment 2.The sound absorber gross thickness of each embodiment is about 25mm.According to product specification, the sudden strain of a muscle textile fabric of embodiment 1 has 180cm H at least
2The hydrostatic head of O, and the lining of embodiment 2 has 24cm H at least
2The hydrostatic head of O is (according to AATCC TM127, DIN EN 20811 with per minute 60cm H
2The test rate of O is tested).The characteristic that comprises the lining that is used for the embodiment sound absorber in the table.
Embodiment 1 and 2 Gurley Hill porosity record by experiment, and with two kinds
The type sudden strain of a muscle is spun non-woven material and is coincide good according to the typical range of specifications vary.Characterize the general porosity or the opening of structure by the air penetrability of Gurley Hill porosity and Fu Leize air penetrability tolerance.The non-constant width of air penetrability scope of various non-woven structures.Generally speaking, all non-woven materials all have more open structure, and wherein the Fu Leize air penetrability is about 50cfm or higher.Solid film has very the solid construction of sealing, and why Here it is is called these films the reason of impermeable membrane, and its Gurley Hill porosity is far above 10,000s.The air penetrability that dodges textile fabric can be from about 4, and the Gurley Hill scope of 000s (as with regard to embodiment 1) is to the Fu Leize air penetrability variation of about 30cfm, thereby obtain the air-flow resistivity scope of about 31,000,000 to 800 Rayleighs.
The overall porosity of structure can be estimated roughly according to basic weight, thickness and the density polymer of lining.If known polyethylene has about 0.98g/cm
3Density, then the overall porosity of embodiment 1 lining can be estimated as approximately 0.6, and the overall porosity of embodiment 2 linings can be estimated as about 0.7.This coincide good with the overall porosity that records according to mercury injection method.Measure according to mercury injection method, the pore diameter range of embodiment 1 is 10nm to about 8, and 000nm, the pore diameter range of embodiment 2 are 10nm to about 10,000nm.It is about 2 that the average pore size of embodiment 1 and embodiment 2 is, 000nm.Solid film has and is about 0 overall porosity, this means do not have space or hole in its structure.This is the reason that solid film has fabulous barrier property.Although have very many holes, to measure according to hydrostatic head, sudden strain of a muscle textile fabric of the present invention shows and the similar water proofing property of solid impermeable membrane.The typical range of the hydrostatic head of lining of the present invention is about 24 to about 230cm H
2O is shown in embodiment 1 and 2.
As can be seen from the table, sudden strain of a muscle textile fabric of the present invention has the kinds of surface feature, as surveying by the Parker surface flatness.Embodiment 1 has about 4.5 microns Parker surface flatness; Therefore, it shows the smooth-going smooth surface of the paper wood that is similar to printing quality.On the contrary, embodiment 2 has about 8 microns Parker surface flatness, and this representative has the rough surface of three-dimensional feature, is banded feature in the case.The Parker surface flatness of wide region allows to produce the surface with aesthetic feeling, to beautify the design in the various architectural spaces.Lining of the present invention can also comprise graph image.
Table
Relatively sound absorber prepares according to similar method, but does not contain the sudden strain of a muscle textile fabric.Relatively the thickness of sound absorber is about 25mm.
With the embodiment sound absorber and relatively sound absorber under room temperature, adjusting at least two weeks after the manufacturing, and before acoustical testing, adjust 24 hours down in controlled condition (23 ℃ temperature and 60% relative humidity).Obtain the absorption coefficient of each sound absorber.
As can be seen from Figure 3, compare the comparing embodiment of being represented by curve C has continuous enhancing in the frequency range of 400Hz to 1200Hz sound absorption with 2 sound absorber by curve 1 and 2 embodiment 1 that represent respectively.Sound absorber with lining is than not having the enhancing amplitude high at least 5% of sound absorber of lining.Embodiment 1 and 2 also illustrates: although much thicker as and to have a much higher air-flow resistivity of lining of boring a hole than impermeability film lining commonly used than the typical case, lining of the present invention reflection of the acoustic energy not basically in higher voice frequency range.
Claims (24)
1. sound absorption goods, described sound absorption goods comprise:
Sound absorption material core with two first type surfaces; With
Cover the lining of described core at least one first type surface, described lining comprises that the porous with adhesive surface dodges the film-fibril strands sheet material that spins the clump silk, and described lining has the 140g/m of being not more than
2Basic weight and comprise a plurality of holes, described hole has between 100nm and 20, the aperture between the 000nm and less than 20, the average pore size of 000nm.
2. the goods of claim 1, wherein said sound absorption material core has the noise reduction coefficient between 0.3 and 0.9, and described sound absorption material is selected from the combination of fleeces, foam, honeycomb structure, air gap, perforated material and above-mentioned material.
3. the goods of claim 1, wherein said lining has a plurality of holes, and described hole has between 100nm and 20, the aperture between the 000nm and less than 5, the average pore size of 000nm.
4. the goods of claim 1, wherein said lining has a plurality of holes, and described hole has between 100nm and 20, the aperture between the 000nm and less than 2, the average pore size of 000nm.
5. the goods of claim 1, wherein said lining comprise and are selected from polyethylene and polyacrylic polymer.
6. the goods of claim 1, wherein said lining has the thickness that is no more than 1mm, and described core has the thickness of 5mm at least.
7. the goods of claim 1, wherein said lining has the Parker surface flatness that is not less than 6 microns.
8. the goods of claim 1, wherein said lining comprises the graph image that is printed thereon.
9. the goods of claim 1, wherein said lining has the hot strength of 20N/2.54cm at least.
10. the goods of claim 1, wherein said lining does not contain the nutriment of supporting growth of microorganism.
11. the goods of claim 1, wherein said lining have at least 4 logarithm drop-out value.
12. the goods of claim 1, wherein said goods are being lower than sound absorption under the frequency of 1200Hz than the sound absorption height at least 5% of the goods that do not have described lining.
13. the goods of claim 1, wherein said lining also is perforated, and described hole passes completely through described lining.
14. the goods of claim 13, the diameter in wherein said hole is less than 1mm.
15. the goods of claim 1, wherein said lining also comprises coating, and described coating is selected from metal layer, antistatic backing, coat of colo(u)r, gloss layer, antibiotic layer and photosensitive layer.
16. the goods of claim 1, described goods also comprise the adhesive phase between at least one first type surface of described lining and described core.
17. composite member, described composite member comprises:
A) has the sound absorption material core of two first type surfaces;
B) cover the lining of described core at least one first type surface, described lining comprises that the porous with adhesive surface dodges the film-fibril strands sheet material that spins the clump silk, and described lining has the 140g/m of being not more than
2Basic weight and comprise a plurality of holes, described hole has between 100nm and 20, the aperture between the 000nm and less than 20, the average pore size of 000nm; And
C) be used to seal described core and towards the entrant sound stiff case of at least one first type surface.
18. the composite member of claim 17, wherein said entrant sound stiff case are selected from the resin material by the solid filling of perforated metal, perforated plastic and perforation.
19. claim 17 composite member, wherein said composite member is being lower than sound absorption under the frequency of about 1200Hz than the sound absorption height at least 5% of the composite member of the described lining of tool not.
20. sound-absorbing partition, described sound-absorbing partition comprises:
Sound absorption material core with two first type surfaces; With
Cover the lining of described core at least one first type surface, described lining comprises that the porous with adhesive surface dodges the film-fibril strands sheet material that spins the clump silk, and described lining has the 140g/m of being not more than
2Basic weight and comprise a plurality of holes, described hole has between 100nm and 20, the aperture between the 000nm and less than 20, the average pore size of 000nm.
21. the dividing plate of claim 20, wherein said dividing plate compares the not sound absorption height at least 5% of the dividing plate of the described lining of tool in the sound absorption that is lower than under the frequency of 1200Hz.
22. the building surface overburden of sound absorption, described overburden comprises:
Sound absorption material core with two first type surfaces; With
Cover the lining of described core at least one first type surface, described lining comprises that the porous with adhesive surface dodges the film-fibril strands sheet material that spins the clump silk, and described lining has the 140g/m of being not more than
2Basic weight and comprise a plurality of holes, described hole has between 100nm and 20, the aperture between the 000nm and less than 20, the average pore size of 000nm.
23. the overburden of claim 22, wherein said overburden compares the not obducent sound absorption height at least 5% of the described lining of tool in the sound absorption that is lower than under the frequency of 1200Hz.
24. the method for sound absorption property in the improvement environment, described method comprises:
(a) provide the sound absorption goods that comprise the sound absorption material core, the lining that described core dodges the film-fibril strands sheet material that spins the clump silk by the porous with adhesive surface covers, and described lining has the 140g/m of being not more than
2Basic weight and comprise a plurality of holes, described hole has between 100nm and 20, the aperture between the 000nm and less than 20, the average pore size of 000nm; With
(b) described goods are placed described environment, make ambient sound be absorbed by described goods.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US888207P | 2007-12-20 | 2007-12-20 | |
| US61/008,882 | 2007-12-20 | ||
| PCT/US2008/087899 WO2009086245A1 (en) | 2007-12-20 | 2008-12-22 | Acoustic absorber with barrier facing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101946048A true CN101946048A (en) | 2011-01-12 |
Family
ID=40459603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008801272788A Pending CN101946048A (en) | 2007-12-20 | 2008-12-22 | Acoustic absorber with barrier facing |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20090173569A1 (en) |
| EP (1) | EP2231942B1 (en) |
| JP (2) | JP5479365B2 (en) |
| CN (1) | CN101946048A (en) |
| WO (1) | WO2009086245A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106716521A (en) * | 2014-09-30 | 2017-05-24 | 米其林集团总公司 | Heat pump device, air-conditioner equipped with same, heat pump water heater, refrigerator, and refrigerating machine |
| WO2022127843A1 (en) * | 2020-12-18 | 2022-06-23 | 香港大学浙江科学技术研究院 | Sound absorbing structure and sound absorbing device |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE602005013645D1 (en) * | 2005-04-04 | 2009-05-14 | Rieter Technologies Ag | Hermetic thin multi-layer shall absorbent element |
| DE102005049570B3 (en) * | 2005-10-17 | 2007-04-05 | Cellofoam Gmbh & Co. Kg | Sound absorbing material e.g. melamine resin foam, for e.g. carriage wall of rail vehicle, has surface with portion coated with flame retardant powder or sprinkled with retardant solution, where material is covered by sound transparent film |
| KR200440716Y1 (en) * | 2006-10-24 | 2008-06-27 | 이계정 | Composite sound-absorbing materials made from polyester of high density and method for preparation thereof |
| US8434120B2 (en) | 2007-06-26 | 2013-04-30 | Thomson Licensing | System and method for grouping program identifiers into multicast groups |
| BRPI0913579A2 (en) * | 2008-05-22 | 2015-11-24 | 3M Innovative Properties Co | sound-absorbing multilayer structure comprising mesh layer |
| CN102656962B (en) * | 2009-12-15 | 2016-06-01 | 旭化成株式会社 | Noise absorption cloth and silk |
| FR2978373B1 (en) * | 2011-07-28 | 2013-08-02 | Saint Gobain Adfors | ACOUSTIC ABSORBENT WALL COATING |
| FR2978459B1 (en) * | 2011-07-28 | 2013-08-02 | Saint Gobain Adfors | ACOUSTIC ABSORBENT WALL COATING COMPRISING A MULTILOBE FIBER LAYER |
| FR2979281B1 (en) | 2011-08-25 | 2013-08-23 | Saint Gobain Adfors | WALL COATING FOR THERMAL AND ACOUSTIC COMFORT |
| GB2516489A (en) * | 2013-07-24 | 2015-01-28 | Geko Innovations Ltd | Acoustic Panel |
| CN107454872A (en) * | 2015-02-13 | 2017-12-08 | 泽费罗斯股份有限公司 | Nonwoven infrared external reflection fibrous material |
| JP7033129B2 (en) * | 2016-10-11 | 2022-03-09 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | A package containing a sealed contact area containing a non-woven fabric with a bonded surface with an embossed imprint pattern |
| JP6705780B2 (en) * | 2017-07-27 | 2020-06-03 | 富士フイルム株式会社 | Soundproof structure |
| JP6660035B2 (en) * | 2018-03-08 | 2020-03-04 | Jnc株式会社 | Laminated sound absorbing material |
| US11565615B2 (en) * | 2020-04-28 | 2023-01-31 | Global Ip Holdings, Llc | Anti-microbial, partition divider assembly for a cart such as a golf cart |
Family Cites Families (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1149040A (en) * | 1956-06-26 | 1957-12-19 | Method and device for manufacturing noise-absorbing elements (bodies) in rooms | |
| US3081519A (en) * | 1962-01-31 | 1963-03-19 | Fibrillated strand | |
| NL300881A (en) * | 1962-11-23 | |||
| US3255563A (en) * | 1962-12-20 | 1966-06-14 | Victor E Sauer | Wall structure and support assembly |
| US3380206A (en) * | 1965-09-29 | 1968-04-30 | Soundlock Corp | Lay-in acoustical ceiling panel with flexible diaphragms |
| US3860369A (en) * | 1972-11-02 | 1975-01-14 | Du Pont | Apparatus for making non-woven fibrous sheet |
| US3858676A (en) * | 1973-01-22 | 1975-01-07 | Masurier Philip H Le | Sound absorbing panel |
| US4522284A (en) * | 1983-04-20 | 1985-06-11 | Peabody Noise Control, Inc. | Composite panel structure |
| JPS6335940A (en) * | 1986-07-30 | 1988-02-16 | コマニ−株式会社 | Sound absorbing panel |
| JPH0762307B2 (en) * | 1987-12-15 | 1995-07-05 | 積水化学工業株式会社 | Fiber molding |
| US4999222A (en) * | 1989-07-10 | 1991-03-12 | E. I. Du Pont De Nemours And Company | Metallized polyethylene plexifilamentary film-fibril sheet |
| US5824973A (en) * | 1992-09-29 | 1998-10-20 | Johns Manville International, Inc. | Method of making sound absorbing laminates and laminates having maximized sound absorbing characteristics |
| US5288536A (en) * | 1993-05-28 | 1994-02-22 | E. I. Du Pont De Nemours And Company | Hydraulic-jet-treated stitchbonded fabric |
| US6096421A (en) * | 1996-01-11 | 2000-08-01 | E. I. Du Pont De Nemours And Company | Plexifilamentary strand of blended polymers |
| US5723084A (en) * | 1996-03-08 | 1998-03-03 | E. I. Du Pont De Nemours And Company | Flash spinning process |
| JP3494332B2 (en) * | 1996-05-28 | 2004-02-09 | カネボウ株式会社 | Soundproofing material |
| US5877100A (en) * | 1996-09-27 | 1999-03-02 | Cabot Corporation | Compositions and insulation bodies having low thermal conductivity |
| CN1090260C (en) * | 1997-03-05 | 2002-09-04 | 纳幕尔杜邦公司 | Improved flash-spun sheet material |
| US20020004351A1 (en) * | 1997-03-05 | 2002-01-10 | Wazir Nobbee | Packaging product |
| DE29713779U1 (en) * | 1997-08-02 | 1997-10-09 | Sommer Allibert Lignotock Gmbh | Multi-layer molded part |
| US6497946B1 (en) * | 1997-10-24 | 2002-12-24 | 3M Innovative Properties Company | Diffuse reflective articles |
| US6197403B1 (en) * | 1998-04-06 | 2001-03-06 | Hp Pelzer (Automotive Systems), Inc. | Integral sound absorber and water deflector door panel |
| US6253526B1 (en) * | 1998-11-13 | 2001-07-03 | E.I. Du Pont De Nemours And Company | Installation method for carpet underlays |
| US6703331B1 (en) * | 1999-02-25 | 2004-03-09 | E. I. Du Pont De Nemours And Company | Fungus resistant gypsum-based substrate |
| EP1222326B1 (en) * | 1999-10-18 | 2005-10-12 | E.I. Du Pont De Nemours And Company | Flash-spun sheet material |
| JP2001236076A (en) * | 2000-02-23 | 2001-08-31 | Toray Ind Inc | Sound absorbing material |
| US20020106959A1 (en) * | 2000-09-01 | 2002-08-08 | Huffines Prentice Lee | Composite sheet material |
| US7157117B2 (en) * | 2002-06-26 | 2007-01-02 | Sigma Laboratories Of Arizona, Llc | Functionalization of porous materials by vacuum deposition of polymers |
| US7776251B2 (en) * | 2003-04-16 | 2010-08-17 | Rowland Griffin | Method of making sound insulation with high loft |
| EP1637317B1 (en) * | 2003-04-22 | 2013-07-31 | Asahi Kasei Fibers Corporation | High strength non-woven fabric |
| WO2004110742A1 (en) * | 2003-06-09 | 2004-12-23 | 3M Innovative Properties Company | Casing-free insulation blanket |
| US7629043B2 (en) * | 2003-12-22 | 2009-12-08 | Kimberly-Clark Worldwide, Inc. | Multi purpose cleaning product including a foam and a web |
| CN101010187A (en) * | 2004-06-29 | 2007-08-01 | 思攀气凝胶公司 | Energy efficient and insulated building envelopes |
| US20060040122A1 (en) * | 2004-08-20 | 2006-02-23 | Verichem, Inc. | Antimicrobial drywall |
| US7500541B2 (en) * | 2004-09-30 | 2009-03-10 | Kimberly-Clark Worldwide, Inc. | Acoustic material with liquid repellency |
| US7837009B2 (en) * | 2005-04-01 | 2010-11-23 | Buckeye Technologies Inc. | Nonwoven material for acoustic insulation, and process for manufacture |
| US7660040B2 (en) * | 2005-05-17 | 2010-02-09 | E. I. Du Pont De Nemours And Company | Diffuse reflective article |
| US20070094964A1 (en) * | 2005-10-17 | 2007-05-03 | Stender Mark L | Dynamically ventilated exterior wall assembly |
| US8445101B2 (en) * | 2007-03-21 | 2013-05-21 | Ashtech Industries, Llc | Sound attenuation building material and system |
-
2008
- 2008-12-19 US US12/339,924 patent/US20090173569A1/en not_active Abandoned
- 2008-12-22 JP JP2010539926A patent/JP5479365B2/en not_active Expired - Fee Related
- 2008-12-22 EP EP08865987.5A patent/EP2231942B1/en not_active Not-in-force
- 2008-12-22 WO PCT/US2008/087899 patent/WO2009086245A1/en active Application Filing
- 2008-12-22 CN CN2008801272788A patent/CN101946048A/en active Pending
-
2014
- 2014-02-12 JP JP2014024014A patent/JP5806349B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106716521A (en) * | 2014-09-30 | 2017-05-24 | 米其林集团总公司 | Heat pump device, air-conditioner equipped with same, heat pump water heater, refrigerator, and refrigerating machine |
| CN106716521B (en) * | 2014-09-30 | 2021-04-16 | 米其林集团总公司 | Sound-absorbing body |
| WO2022127843A1 (en) * | 2020-12-18 | 2022-06-23 | 香港大学浙江科学技术研究院 | Sound absorbing structure and sound absorbing device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20090173569A1 (en) | 2009-07-09 |
| EP2231942A1 (en) | 2010-09-29 |
| JP5806349B2 (en) | 2015-11-10 |
| EP2231942B1 (en) | 2014-09-17 |
| JP5479365B2 (en) | 2014-04-23 |
| WO2009086245A1 (en) | 2009-07-09 |
| JP2011508118A (en) | 2011-03-10 |
| JP2014130363A (en) | 2014-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101946048A (en) | Acoustic absorber with barrier facing | |
| CN101946050A (en) | Acoustically absorbent ceiling tile having barrier facing with diffuse reflectance | |
| US8322487B1 (en) | Acoustically coupled non-woven composite | |
| US8496088B2 (en) | Acoustic composite | |
| JP6211037B2 (en) | Multi-layer sound absorbing sheet | |
| KR101408581B1 (en) | Porous membrane | |
| CA3040474C (en) | Nonwoven composite | |
| GB2364958A (en) | Lightweight acoustical system | |
| US9309666B2 (en) | Wall covering for thermal and acoustic comfort | |
| Patnaik | Materials used for acoustic textiles | |
| US11905633B2 (en) | Functional nonwoven scrim for high temperature applications requiring low flammability, smoke, and toxicity | |
| US11548259B2 (en) | Process for forming a nonwoven composite | |
| JPH09317047A (en) | Sound insulation panel | |
| JP7033055B2 (en) | Soundproof structure and soundproof panel | |
| MX2008008387A (en) | Porous membrane | |
| JPH04185752A (en) | Woven fabric for floor covering material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110112 |