WO2013022323A1 - 통기도, 기공도 조절을 통한 유리섬유계 흡음시트 - Google Patents
통기도, 기공도 조절을 통한 유리섬유계 흡음시트 Download PDFInfo
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- WO2013022323A1 WO2013022323A1 PCT/KR2012/006425 KR2012006425W WO2013022323A1 WO 2013022323 A1 WO2013022323 A1 WO 2013022323A1 KR 2012006425 W KR2012006425 W KR 2012006425W WO 2013022323 A1 WO2013022323 A1 WO 2013022323A1
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- Prior art keywords
- absorbing sheet
- sound absorbing
- sound
- substrate
- sound absorption
- Prior art date
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Classifications
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- 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
- D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/10—Organic non-cellulose fibres
- D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D21H13/16—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/38—Inorganic fibres or flakes siliceous
- D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/18—Paper- or board-based structures for surface covering
- D21H27/20—Flexible structures being applied by the user, e.g. wallpaper
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
Definitions
- the present invention relates to a glass fiber sound absorbing sheet mainly composed of glass fibers and cellulose fibers, and more particularly to a sound absorbing sheet having a maximum sound absorption performance by adjusting the air permeability and porosity of the substrate.
- Korean Laid-Open Patent Publication No. 10-2002-0044600 discloses a technique for manufacturing a layered sheet for impregnating synthetic sheets mainly based on cellulose, polyester, and PVA, but all of them are sound absorbed due to physical properties and breathability of the material itself. It is related to the excellence of the performance, there is a problem that not only the work is cumbersome but also the function as a sound absorbing sheet is limited. Furthermore, in order to solve this problem, the use of a thick sound absorbing sheet reduces the space and causes a costly inconvenience.
- An object of the present invention is to provide a sound absorption sheet having a maximum sound absorption performance composed of glass fibers and cellulose fibers.
- the present invention is to provide a sound absorbing sheet comprising a base material, the sound absorption sheet having an average sound absorption of 0.4 or more in the frequency range 200 ⁇ 2000Hz.
- the sound absorbing sheet according to the present invention provides an excellent effect on sound absorption performance.
- the sound-absorbing sheet according to the present invention can be utilized as a constituent material in the sound-absorbing and sound-proof material and system configuration.
- the present invention provides a sound absorbing sheet including a substrate and having an average sound absorbance measurement value of 0.4 or more in the 200 to 2000 Hz frequency range.
- the sound absorption rate is between 0 and 1, and the closer to 1, the better the sound absorbing ability.
- the normal sound absorbing material is about 0.3, and the 0.4 or more sound absorbing ability is excellent.
- the sound absorption coefficient is made on the basis of several frequencies, and the average sound absorption coefficient at this time is called an average sound absorption rate.
- the sound absorption sheet shows an average sound absorption rate of 0.4 or more, and it can be seen that the sound absorption performance is excellent.
- the substrate may be composed of glass fibers, cellulose fibers.
- the glass fiber is a glass fiber made by melting and processing SiO 2 as a main component, and is divided into long fibers and short fibers according to a manufacturing method and a use. The thinner the fiber, the better the tensile strength and thermal conductivity. The thing of 5-20 micrometers for heat insulation and sound absorption, and the thing of 40-150 micrometers for filtration are mainly used.
- the cellulose fibers are usually made of natural fibers and fibers made from them, and representative examples thereof include wood fibers, cotton fibers, hemp fibers, and rayon.
- Cellulose fibers are usually in the form of yarn fabrics or knitted fabrics. Cellulose fibers may also be used in combination with other synthetic fibers. It can be used with synthetic fibers such as polyester. Fiber products in which synthetic fibers are mixed with the cellulose fibers, that is, containing cellulose fibers, are present in the form of blended yarns, blended fabrics, teaching cloths, or interwovens thereof.
- the substrate may include 30 to 60% by weight of glass fibers, 40 to 70% by weight of cellulose fibers.
- the glass fiber and the cellulose fiber have the above configuration in terms of sound absorption performance. When it is not in the said fiber structure range, there exists a possibility that a sound absorption performance may fall.
- the glass fiber content when the glass fiber content is less than 30% by weight, physical properties such as tensile strength and tearing strength of the nonwoven fabric may be lowered, and when the glass fiber content is more than 60% by weight, air permeability is too large and sound absorption performance is increased. There is a risk of falling.
- the air permeability is properly maintained to implement an excellent sound absorption performance, there is an advantage that the strength is not weakened.
- the substrate may further include an organic synthetic fiber.
- the organic synthetic fiber may include 2 wt% to 10 wt%.
- Organic synthetic fibers are organic chemicals that do not exist in nature using low molecules such as petroleum, coal, limestone, and chlorine without any natural fibers or proteins, and are made into fibers by spinning them into elongated polymer compounds. By including the organic synthetic fibers in the above range, flexibility can be imparted to the substrate, and damage to the substrate can be minimized when a physical force is applied to the substrate such as folding or folding.
- the type of the organic synthetic fiber is not limited, but polyester, polyethylene (PE), polypropylene (PP), ethylene-styrene copolymer (ES), cycloolefin, polyethylene terephthalate (PET), polyvinyl alcohol ( PVA), ethylene-vinyl-acetate (EVA), polyethylenenaphthalate (PEN), polyetheretherketone (PEEK), polycarbonate (PC), polysulfone, polyimide (PI), polyacrylonitrile (PAN), It may be characterized in that at least one selected from styrene acrylonitrile (SAN), polyurethane (PU).
- the glass synthetic fibers may be composed of polyvinyl alcohol (PVA), polyethylene terephthalate (PET).
- the substrate can secure flexibility, it is preferable to contain polyvinyl alcohol (PVA) containing at least one unit selected from the group consisting of ⁇ -olefin units having 4 or more carbon atoms and C 1-4 alkylvinyl ether units. Even more preferred.
- PVA polyvinyl alcohol
- the basis weight of the said base material 50-150g / m ⁇ 2> it is preferable to set it as the basis weight of the said base material 50-150g / m ⁇ 2> .
- the basis weight of the substrate layer is less than 50 g / m 2 , the sound absorption performance may be reduced, and if it exceeds 150 g / m 2 , the manufacturing cost may be excessively increased.
- the base material preferably has a thickness of 0.1 ⁇ 0.7mm. If the above range is exceeded, the porosity of the nonwoven fabric is too small or too large, so that the sound absorbing performance may be reduced.
- the sound absorbing sheet preferably has a ventilation of 100 ⁇ 1000L / m 2 / s at 200Pa pressure.
- the porosity is too small or too large, there is a concern that the sound absorption performance is reduced.
- the sound absorbing sheet preferably has an average pore size (Pore size) of 10 ⁇ 50 ⁇ m.
- average porosity of the sound absorbing sheet is out of the above range, there is a fear that the sound absorbing performance is lowered.
- the nonwoven fabric produced by using the above-described fibers was configured to adjust the thickness, the fiber composition ratio, and the basis weight of the nonwoven fabric to configure Examples and Comparative Examples. (Table 2, Table 3)
- Nonwoven Thickness (mm) Nonwoven fabric composition ratio (wt%) (cellulose fiber: glass fiber: organic synthetic fiber)
- Nonwoven Basis Weight (g / m 2 )
- Example 1 0.38 55: 40: 5 (polyester) 80
- Example 2 0.39 60: 35: 5 (polypropylene) 90
- Example 3 0.36 50: 45: 5 (polyvinyl alcohol) 70
- the in-tube method is a method for measuring the sound absorption rate of a sound absorbing material by measuring standing waves when a plane wave is vertically incident in a predetermined direction.
- it is a simple method that can be tried when it is difficult to secure the specimen, and then accurately test the size of the specimen and repeat the test to obtain the result of minimizing the measurement error.
- NRC (a250 + a500 + a1,000 + a2,000) / 4
- NRC Noise Reduction Coefficient
- Table 4 Frequency (Hz) 200 250 315 400 500 630 800 1000 1250 1600 2000
- Example 1 0.05 0.11 0.24 0.2 0.45 0.48 0.8 0.93 0.96 0.91 0.78
- Example 2 0.05 0.09 0.15 0.25 0.38 0.49 0.75 0.92 0.98 0.95
- Example 3 0.09 0.1 0.11 0.18 0.39 0.45 0.59 0.81 0.91 0.92 0.79
- Table 5 Frequency (Hz) 200 250 315 400 500 630 800 1000 1250 1600 2000 Comparative Example 1 0.02 0.01 0.05 0.05 0.11 0.11 0.12 0.18 0.28 0.32 0.33 Comparative Example 2 0.01 0.04 0.07 0.08 0.11 0.14 0.23 0.31 0.42 0.49 0.46 Comparative Example 3 0.04 0.04 0.07 0.12 0.16 0.22 0.32 0.47 0.56 0.6 0.55 Comparative Example 4 0.05 0.06 0.06 0.06 0.1 0.15 0.22 0.3 0.36 0.39 0.4
- [Table 6] and [Table 7] are the results of measuring the average sound absorption rate according to the air permeability and the average Pore size of the Examples and Comparative Examples.
- the air permeability of the nonwoven fabric has a range of 100 to 1000 L / m 2 / s at a pressure of 200 Pa, and a pore size ) Has a range of 10 ⁇ 50 ⁇ m, it was confirmed that the average sound absorption rate of the sound absorbing sheet in the 200 ⁇ 2000Hz frequency range of 0.4 or more.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Laminated Bodies (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
섬유직경 | 섬유길이 | |
유리섬유(90중량% 이상) | 5~20㎛ | 1~50mm |
셀룰로오스 섬유(90중량% 이상) | 5~100㎛ | 1~50mm |
부직포두께(mm) | 부직포 섬유구성비(중량%)(셀룰로오스 섬유: 유리섬유: 유기합성섬유) | 부직포 평량(g/m2) | |
실시예1 | 0.38 | 55:40:5(폴리에스테르) | 80 |
실시예2 | 0.39 | 60:35:5(폴리프로필렌) | 90 |
실시예3 | 0.36 | 50:45:5(폴리비닐알콜) | 70 |
부직포 두께(mm) | 부직포 섬유구성비(중량%)(셀룰로오스 섬유: 유리섬유: 유기합성섬유) | 부직포 평량(g/m2) | |
비교예1 | 0.37 | 15:85:0 | 50 |
비교예2 | 0.39 | 15:85:0 | 70 |
비교예3 | 0.38 | 20:80:0 | 70 |
비교예4 | 0.41 | 30:20:50(폴리비닐알콜) | 100 |
주파수(Hz) | 200 | 250 | 315 | 400 | 500 | 630 | 800 | 1000 | 1250 | 1600 | 2000 |
실시예1 | 0.05 | 0.11 | 0.24 | 0.2 | 0.45 | 0.48 | 0.8 | 0.93 | 0.96 | 0.91 | 0.78 |
실시예2 | 0.05 | 0.09 | 0.15 | 0.25 | 0.38 | 0.49 | 0.75 | 0.92 | 0.98 | 0.95 | 0.8 |
실시예3 | 0.09 | 0.1 | 0.11 | 0.18 | 0.39 | 0.45 | 0.59 | 0.81 | 0.91 | 0.92 | 0.79 |
주파수(Hz) | 200 | 250 | 315 | 400 | 500 | 630 | 800 | 1000 | 1250 | 1600 | 2000 |
비교예1 | 0.02 | 0.01 | 0.05 | 0.05 | 0.11 | 0.11 | 0.12 | 0.18 | 0.28 | 0.32 | 0.33 |
비교예2 | 0.01 | 0.04 | 0.07 | 0.08 | 0.11 | 0.14 | 0.23 | 0.31 | 0.42 | 0.49 | 0.46 |
비교예3 | 0.04 | 0.04 | 0.07 | 0.12 | 0.16 | 0.22 | 0.32 | 0.47 | 0.56 | 0.6 | 0.55 |
비교예4 | 0.05 | 0.06 | 0.06 | 0.06 | 0.1 | 0.15 | 0.22 | 0.3 | 0.36 | 0.39 | 0.4 |
통기도(L/m2/s)at 200Pa | 평균 Pore size(Capillary Flow Porometer/Model: CFP-1200 AEIL) (㎛) | 흡음시트평량(g/m2) | 평균 흡음률(NRC) | |
실시예1 | 493 | 30 | 80 | 0.5675 |
실시예2 | 470 | 31 | 90 | 0.5475 |
실시예3 | 510 | 39 | 70 | 0.5225 |
통기도(L/m2/s)at 200Pa | 평균 Pore size(Capillary Flow Porometer/Model: CFP-1200 AEIL) (㎛) | 흡음시트평량(g/m2) | 평균 흡음률(NRC) | |
비교예1 | - | 51 | 50 | 0.1575 |
비교예2 | - | 51 | 70 | 0.23 |
비교예3 | - | 50 | 70 | 0.305 |
비교예4 | - | 61 | 100 | 0.175 |
Claims (11)
- 기재를 포함하며, 200~2000Hz 주파수 범위에서 평균흡음률 측정값이 0.4 이상인 흡음성능을 갖는 것을 특징으로 하는 흡음시트.
- 제 1항에 있어서,상기 기재는 유리섬유, 셀룰로오스 섬유를 포함하는 것을 특징으로 하는 흡음시트.
- 제 2항에 있어서,상기 기재는 유리섬유 30~60중량%, 셀룰로오스 섬유 40~70중량%를 포함하는 것을 특징으로 하는 흡음시트
- 제 1항에 있어서,상기 기재는 유기합성섬유를 더 포함하는 것을 특징으로 하는 흡음시트
- 제 4항에 있어서,상기 기재는 유기합성섬유를 2 ~10중량%를 포함하는 것을 특징으로 하는 흡음시트.
- 제 4항에 있어서,상기 유기합성섬유는 폴리에스테르, 폴리에틸렌(PE), 폴리프로필렌(PP), 에틸렌-스티렌 공중합체(ES), 싸이클로올레핀, 폴리에틸렌테레프탈레이트(PET), 폴리비닐알콜(PVA), 에틸렌-비닐-아세테이트(EVA), 폴리에틸렌나프탈레이트 (PEN), 폴리에테르에테르케톤(PEEK), 폴리카보네이트 (PC), 폴리설폰, 폴리이미드(PI), 폴리아크릴로니트릴(PAN), 스티렌 아크릴로니트릴(SAN), 폴리우레탄(PU) 중에서 선택되는 1종 이상인 것을 특징으로 하는 흡음시트.
- 제 6항에 있어서,상기 폴리비닐알코올(PVA)은 4이상의 탄소수를 가진 α-올레핀 단위 및 C 1내지 4 알킬비닐에테르 단위의 군으로부터 선택된 하나 이상의 단위를 함유하는 것을 특징으로 하는 흡음시트.
- 제 1항에 있어서,상기 기재는 0.1~0.7mm의 두께를 갖는 것을 특징으로 하는 흡음시트.
- 제 1항에 있어서,상기 기재는 50~150g/m2의 평량을 갖는 것을 특징으로 하는 흡음시트.
- 제 1항에 있어서,상기 흡음시트는 200Pa 압력에서 100~1000L/m2/s의 통기도를 갖는 것을 특징으로 하는 흡음시트.
- 제 1항에 있어서,상기 흡음시트는 10~50㎛의 평균 기공도(Pore size)를 갖는 것을 특징으로 하는 흡음시트.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/232,978 US9190046B2 (en) | 2011-08-11 | 2012-08-13 | Glass fiber-based sound absorbing sheet having adjustable permeability and air porosity |
JP2014522760A JP5890902B2 (ja) | 2011-08-11 | 2012-08-13 | 通気度、気孔度の調節によるガラス繊維系吸音シート |
EP12821637.1A EP2743920B1 (en) | 2011-08-11 | 2012-08-13 | Glass fiber-based sound absorbing sheet having adjustable permeability and air porosity |
CN201280039311.8A CN103733253B (zh) | 2011-08-11 | 2012-08-13 | 通过透气度、孔隙大小调节的玻璃纤维类吸音片 |
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KR10-2011-0080338 | 2011-08-11 | ||
KR1020110080338A KR101391098B1 (ko) | 2011-08-11 | 2011-08-11 | 흡음성능이 우수한 유리섬유계 흡음시트 |
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WO2013022323A1 true WO2013022323A1 (ko) | 2013-02-14 |
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PCT/KR2012/006425 WO2013022323A1 (ko) | 2011-08-11 | 2012-08-13 | 통기도, 기공도 조절을 통한 유리섬유계 흡음시트 |
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US (1) | US9190046B2 (ko) |
EP (1) | EP2743920B1 (ko) |
JP (1) | JP5890902B2 (ko) |
KR (1) | KR101391098B1 (ko) |
CN (1) | CN103733253B (ko) |
WO (1) | WO2013022323A1 (ko) |
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CN105421135B (zh) * | 2015-11-30 | 2017-11-28 | 陕西科技大学 | 一种植物纤维/废弃frp复合材料及其制备方法 |
CN106242480B (zh) * | 2016-07-21 | 2018-08-03 | 广州声博士声学技术有限公司 | 一种复合吸音材料及其制备方法 |
JP6524133B2 (ja) * | 2017-03-24 | 2019-06-05 | イビデン株式会社 | 吸音材 |
KR101898871B1 (ko) * | 2018-02-08 | 2018-09-14 | 주식회사 엔바이오니아 | 흡음 패널의 제조방법 및 그 방법에 의해 제조된 흡음 패널 |
KR20220137360A (ko) | 2021-04-02 | 2022-10-12 | 주식회사 엘지화학 | 에어로겔 복합체 제조방법 및 에어로겔 복합체 |
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- 2012-08-13 WO PCT/KR2012/006425 patent/WO2013022323A1/ko active Application Filing
- 2012-08-13 EP EP12821637.1A patent/EP2743920B1/en active Active
- 2012-08-13 CN CN201280039311.8A patent/CN103733253B/zh active Active
- 2012-08-13 US US14/232,978 patent/US9190046B2/en not_active Expired - Fee Related
- 2012-08-13 JP JP2014522760A patent/JP5890902B2/ja active Active
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See also references of EP2743920A4 |
Also Published As
Publication number | Publication date |
---|---|
CN103733253B (zh) | 2016-08-10 |
EP2743920B1 (en) | 2017-09-20 |
EP2743920A1 (en) | 2014-06-18 |
US20140138182A1 (en) | 2014-05-22 |
KR101391098B1 (ko) | 2014-04-30 |
KR20130017731A (ko) | 2013-02-20 |
JP5890902B2 (ja) | 2016-03-22 |
EP2743920A4 (en) | 2015-03-18 |
CN103733253A (zh) | 2014-04-16 |
US9190046B2 (en) | 2015-11-17 |
JP2014521995A (ja) | 2014-08-28 |
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