CN202422724U - Full-frequency sound absorption cotton - Google Patents
Full-frequency sound absorption cotton Download PDFInfo
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- CN202422724U CN202422724U CN2011205441464U CN201120544146U CN202422724U CN 202422724 U CN202422724 U CN 202422724U CN 2011205441464 U CN2011205441464 U CN 2011205441464U CN 201120544146 U CN201120544146 U CN 201120544146U CN 202422724 U CN202422724 U CN 202422724U
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- acoustical cotton
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Abstract
The utility model relates to full-frequency sound absorption cotton with a two-layer structure or a three-layer structure. The full-frequency sound absorption cotton with the two-layer structure consists of a melt-blown high-polymer fiber layer and an expanded polytetrafluoroethylene layer. The full-frequency sound absorption cotton with the three-layer structure is formed by compositing the expanded polytetrafluoroethylene layers on two faces of the melt-blown high-polymer fiber layer, or formed by compositing the melt-blown high-polymer fiber layers on the two faces of the expanded polytetrafluoroethylene layer. By adoption of a high-performance composite micro-pore thin-layer new material, the full-frequency sound absorption cotton is high in full-frequency sound absorption capacity, environment-friendly, non-toxic, free from peculiar smell and pollution-free, and does not contain carcinogenic substances. The skin irritation of glass fiber is avoided in operation, the full-frequency sound absorption cotton can be punched, and dust and scraps can be eliminated.
Description
Technical field
The utility model relates to a kind of acoustical cotton, particularly a kind of efficient full range acoustical cotton.
Background technology
Human auditory system is very responsive, and the normal person can discover the sound variation of 1dB, and the difference of 3dB will be felt obvious difference.In general below 15 decibels we just can think that it belongs to " deathly stillness ".The 20-40 decibel approximately is lovers' vocies in one's ear.The 40-60 decibel belongs to us and talks sound normally.Just belonged to the noise scope more than 60 decibels, 70 decibels we just can think that it is very noisy, and the beginning hearing damage is neural; Will make impaired hearing more than 90 decibels; And stay in the space of 100-120 decibel, if nothing else, the mankind must temporaryly become deaf in one minute.There is masking effect in people's ear, and when a sound was higher than another sound 10dB, less sound was difficult to be heard and understand because of sheltering, because masking effect, in the environment of 90-100dB, even closely speech can not heard yet.People's ear has the ability of perception sound frequency, and the sound people that frequency is high have the sensation of " high pitch ", and the sound people that frequency is low have the sensation of " bass ", and the normal auditory frequency range of people's ear is 20-20KHz.The tubule of the similar 2-3cm of people's ear duct; Because frequency resonance, sound is enhanced in the scope of 2000-3000Hz, occupies an leading position in the consonant of this frequency in language; Help not hearing language and exchange, but the frequency that people's ear wears out at first is also in this scope.It is generally acknowledged, be low frequency below the 500Hz, and 500Hz-2000Hz is an intermediate frequency, and 2000Hz is above to be high frequency.The frequency range of language mainly concentrates on intermediate frequency.Human auditory system susceptibility is because frequency different different, susceptibility variation when frequency is low more or high more, and it is louder than the sound of low frequency and high frequency that onesize sound, intermediate frequency sound.
Mention noise, everybody is not strange.Noise is all affecting our work efficiency all the time, sleep, hearing, Music Appreciation and health.Stay melodized sound away from noise, what we can do is exactly sound insulation and sound-absorbing.
Acoustical cotton commonly used in the market has the spun glass acoustical cotton, rock wool, and the rubber and plastic acoustical cotton, sponge (pyramid acoustical cotton, egg is cotton), the dacron acoustical cotton, gradient acoustical cotton etc., sound-absorbing effect is imperfect.Be difficult to satisfy high-fidelity audio equipment and environment space application to will obviously reducing in the noise full range scope.Analyze as follows:
Glass wool and rock wool key property are basic identical, and the fire-fighting index is the A level, for not firing product.So consider that from the fire prevention angle glass wool or rock wool are good selections merely.The material of forming glass wool is a spun glass, and spun glass is a kind of fragile fibre, and this fiber stiffness is big, simply understands this fiber just as pin, is very easy to thrust skin, so glass fibre cotton is easy to cause pruitus.Certainly fragile fibre meeting efflorescence, efflorescence is exactly to make original fiber become more tiny fiber, and these fibers get in air, if in a single day sucked by human body, will thrust the tube wall of respiratory tract and alveolar, cause respiratory tract anaphylaxis.Here it is, and the restriction glass wool uses the biggest factor, be exactly that it is not too friendly briefly, and rock wool also has radiated wave, and human body is also had harm.In sum, the spun glass acoustical cotton is more suitable for outdoor application, because its price is lower.And indoor should as far as possible avoiding the use of, health is the wealth of our maximum after all.
Rubber and plastic is cotton and sponge is similar, and they all are expanded materials, and major part all is a closed cell foamed material.Be understood that according to the sound-absorbing principle sound absorption qualities of this closed-cell materials still is limited.So these materials are more suitable for being used for field of thermal insulation.Rubber and plastic cotton and sponge are inflammable products, and in combustion process, can produce toxic gas.
Dacron acoustical cotton and gradient acoustical cotton also are more similar.The gradient acoustical cotton also is a kind of dacron acoustical cotton, and its special character is its structure, and its structure is a gradient density, its this structures shape it in the obvious performance in sound-absorbing field, it can accomplish the full range sound-absorbing.This type acoustical cotton just is more suitable for indoor use, and it meets the selection standard of indoor material, and the one, environmental protection E1 level, fire-fighting B1 level, acoustical testing data are good relatively.And the limitation of general dacron acoustical cotton is that the frequency range of sound-absorbing is narrower, and good absorption effect can only be arranged the sound of CF, only its corresponding frequency range is had preferably performance according to its density.The gradient acoustical cotton is given birth to this situation just; It has just well kept the advantage of dacron acoustical cotton; To having done outstanding lifting on the acoustical behavior, excessively to hard, the gradient acoustical cotton is confined to the indoor decoration sound-absorbing and uses the hardness of gradient acoustical cotton by soft.Above material all exists defective and deficiency.
The utility model content
The purpose of the utility model is to solve above-mentioned deficiency, and a kind of efficient full range acoustical cotton is provided.
The technical scheme that realizes the utility model purpose is: a kind of full range acoustical cotton, have two-layer or three-decker, and the full range acoustical cotton of double-layer structure is formed by melting and spraying high polymer fibre layer and eptfe layer; Three layers of full range acoustical cotton are formed by melting and spraying the two-sided compound eptfe layer of high polymer fibre layer, or are made up of the two-sided compound high polymer fibre layer that melts and sprays of eptfe layer.
Above-mentioned full range acoustical cotton; Saidly melt and spray between high polymer fibre layer and the two-sided compound eptfe layer to heat compound or ultrasonic soldering or the adhesive bonding forms, also can form for high polymer fibre is is directly melted and sprayed on eptfe layer.
Above-mentioned full range acoustical cotton, the said high polymer fibre layer that melts and sprays is the fusion-jetting polypropylene fibre thin layer.
Above-mentioned full range acoustical cotton, the said high polymer fibre layer that melts and sprays is for melting and spraying the pet fiber thin layer.
Above-mentioned full range acoustical cotton, said eptfe layer are grease-proof and waterproof modification eptfe layer.
Melting and spraying superpolymer ultrafine fiber (PP polypropylene or PET polyester) melts and sprays at random to distribute to bond together and forms thin layer micropore clearance material; Outward appearance is pure white, smooth, neither too hard, nor too soft; The material fiber fineness is 1～10 μ m; Have bigger specific surface area, higher porosity (＞75%), ultrafine fiber stochastic distribution provide more heat bonding chance between fiber.It is compound that this is melted and sprayed superpolymer ultrafine fiber and expanded PTFE (ePTFE) film (micropore diameter is at 0.01～20 μ m, every square centimeter on several hundred million micro-porous permeable gaps are arranged).Melt and spray superpolymer ultrafine fiber layer and expanded PTFE (ePTFE) film compound after, its structure is: have in the material a large amount of, interpenetrate, from showing the micropore of lining, also promptly have certain gas penetration potential.The sound-absorbing principle of many micropores matter acoustical material is a vibrate air when from slot, passing in and out, and air molecule and material and self friction are transformed into heat energy to acoustic energy, have consumed.How close more Kong Yue is, and sound absorbing power is stronger, formed a kind of specific function new material of high performance efficient full range sound-absorbing; When sound wave incides this many micropores new material surface, cause the air vibration in the micropore, because the viscous resistance and the conduction of heat of frictional resistance and air; Quite a few acoustic energy is converted into heat energy, and the sound equipment acoustic pressure has reduced by 4～6dB in the full range scope, and the full range sound-absorbing effect is fairly obvious; Especially the centering low frequency noise absorbs better, and it is applied on the high-fidelity audio equipment, can absorb noise in the whole frequency range; Stay dulect music; It is big that use noise on indoor environment, automobile or electromechanical equipment is absorbed degree, and its neighbourhood noise will greatly reduce, and gives comfortable environment of people.
The utlity model has positive effect: the composite microporous thin layer new material of (1) high-performance has had better full range sound absorbing power; (2) environment-protecting asepsis free from extraneous odour, non-volatility gas, pollution-free, do not contain carcinogen; (3) the no glass-like fiber of operation can carry out Punching Technology to the pungency of skin, does not produce dust chip etc.
Description of drawings
For the content that makes the utility model is expressly understood more easily,, the utility model is done further detailed explanation, wherein below according to specific embodiment and combine accompanying drawing
Fig. 1 is the full range acoustical cotton structural representation of double-layer structure;
Fig. 2 is the full range acoustical cotton structural representation that melts and sprays the three-decker of the two-sided compound eptfe layer of high polymer fibre layer;
Fig. 3 is the two-sided compound full range acoustical cotton structural representation that melts and sprays the three-decker of high polymer fibre layer of eptfe layer.
Wherein 1 fusion-jetting polypropylene fibrage, 2 eptfe layers, 3 grease-proof and waterproof modification eptfe layers.
Embodiment
(embodiment 1)
See Fig. 1, the full range acoustical cotton that the utlity model has double-layer structure is made up of fusion-jetting polypropylene fibrage 1 and eptfe layer 2, forms for ultrasonic soldering between two-layer.
(embodiment 2)
See Fig. 2, the utlity model has three layers of full range acoustical cotton and form, form for the adhesive bonding between each layer by fusion-jetting polypropylene fibrage 1 two-sided compound eptfe layer 2.
(embodiment 3)
See Fig. 3, the utlity model has three layers of full range acoustical cotton and form, be composited for heat between each layer by grease-proof and waterproof modification eptfe layer 3 two-sided compound fusion-jetting polypropylene fibrages 1.
Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (5)
1. full range acoustical cotton is characterized in that: have two-layer or three-decker, the full range acoustical cotton of double-layer structure is by melting and spraying high polymer fibre layer (1) and eptfe layer (2) is formed; Three layers of full range acoustical cotton are formed by melting and spraying the two-sided compound eptfe layer of high polymer fibre layer (1) (2), or are made up of the two-sided compound high polymer fibre layer (1) that melts and sprays of eptfe layer (2).
2. full range acoustical cotton according to claim 1; It is characterized in that: saidly melt and spray between high polymer fibre layer (1) and the two-sided compound eptfe layer (2) to heat compound or ultrasonic soldering or the adhesive bonding forms, also can form for high polymer fibre is is directly melted and sprayed on eptfe layer (2).
3. full range acoustical cotton according to claim 2 is characterized in that: the said high polymer fibre layer (1) that melts and sprays is the fusion-jetting polypropylene fibre thin layer.
4. full range acoustical cotton according to claim 2 is characterized in that: the said high polymer fibre layer (1) that melts and sprays is for melting and spraying the pet fiber thin layer.
5. full range acoustical cotton according to claim 2 is characterized in that: said eptfe layer (2) is a grease-proof and waterproof modification eptfe layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205441464U CN202422724U (en) | 2011-12-22 | 2011-12-22 | Full-frequency sound absorption cotton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205441464U CN202422724U (en) | 2011-12-22 | 2011-12-22 | Full-frequency sound absorption cotton |
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| Publication Number | Publication Date |
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| CN202422724U true CN202422724U (en) | 2012-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011205441464U Expired - Lifetime CN202422724U (en) | 2011-12-22 | 2011-12-22 | Full-frequency sound absorption cotton |
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| CN (1) | CN202422724U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177719A (en) * | 2011-12-22 | 2013-06-26 | 常州市泛亚微透科技有限公司 | Full-frequency sound absorbing cotton |
| CN103342029A (en) * | 2013-07-23 | 2013-10-09 | 常州市泛亚微透科技有限公司 | Expanded polytetrafluoroethylene composite fibre cotton with high acoustical absorption coefficient |
| CN103341970A (en) * | 2013-07-02 | 2013-10-09 | 无锡吉兴汽车部件有限公司 | Ultrasonic welding process for acoustic wool of acoustic part on automobile |
| CN103498428A (en) * | 2013-09-25 | 2014-01-08 | 常州市泛亚微透科技有限公司 | High-sound-absorbing combined material used for traffic sound barrier and manufacturing method of the high-sound-absorbing combined material |
| CN103660477A (en) * | 2013-12-03 | 2014-03-26 | 常州市泛亚微透科技有限公司 | Textile fabric composite sound-absorbing lamination fabric for automobile internal decoration and manufacturing method thereof |
| CN103660474A (en) * | 2013-12-03 | 2014-03-26 | 常州市泛亚微透科技有限公司 | Nonwoven fabric composite sound-absorbing lamination fabric for automobile internal decoration and manufacturing method thereof |
| WO2017140097A1 (en) * | 2016-02-15 | 2017-08-24 | 江苏泛亚微透科技股份有限公司 | Composite expanded polytetrafluoroethylene film-polyurethane foam surface full-frequency band strong sound-absorption sheet and preparation method therefor |
| CN107379665A (en) * | 2017-08-01 | 2017-11-24 | 湖北天运消音防振新材料有限公司 | A kind of two-component acoustical cotton for possessing superpower sound-absorbing effect |
| CN107829846A (en) * | 2017-10-27 | 2018-03-23 | 四川森洁燃气设备有限公司 | A kind of feed pipe for automobile fuel gas conveying |
-
2011
- 2011-12-22 CN CN2011205441464U patent/CN202422724U/en not_active Expired - Lifetime
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103177719A (en) * | 2011-12-22 | 2013-06-26 | 常州市泛亚微透科技有限公司 | Full-frequency sound absorbing cotton |
| CN103177719B (en) * | 2011-12-22 | 2015-12-02 | 常州市泛亚微透科技有限公司 | Full range acoustical cotton |
| CN103341970A (en) * | 2013-07-02 | 2013-10-09 | 无锡吉兴汽车部件有限公司 | Ultrasonic welding process for acoustic wool of acoustic part on automobile |
| CN103341970B (en) * | 2013-07-02 | 2016-01-20 | 无锡吉兴汽车部件有限公司 | The ultrasonic welding process of acoustic part of automobile acoustical cotton |
| EP3025861A4 (en) * | 2013-07-23 | 2017-03-08 | Panasian Microvent Tech (Jiangsu) Corporation | High sound-adsorption coefficient expanded polytetrafluoroethylene composite fiber cotton |
| CN103342029A (en) * | 2013-07-23 | 2013-10-09 | 常州市泛亚微透科技有限公司 | Expanded polytetrafluoroethylene composite fibre cotton with high acoustical absorption coefficient |
| US9969151B2 (en) * | 2013-07-23 | 2018-05-15 | Panasian Microvent Tech (Jiangsu) Corporation | High sound absorption coefficient expanded PTFE composite fiber cotton |
| WO2015010489A1 (en) * | 2013-07-23 | 2015-01-29 | 常州市泛亚微透科技有限公司 | High sound-adsorption coefficient expanded polytetrafluoroethylene composite fiber cotton |
| US20160121588A1 (en) * | 2013-07-23 | 2016-05-05 | Panasian Microvent Tech (Jiangsu) Corporation | High Sound Absorption Coefficient Expanded PTFE Composite Fiber Cotton |
| CN103498428A (en) * | 2013-09-25 | 2014-01-08 | 常州市泛亚微透科技有限公司 | High-sound-absorbing combined material used for traffic sound barrier and manufacturing method of the high-sound-absorbing combined material |
| CN103498428B (en) * | 2013-09-25 | 2016-08-17 | 江苏泛亚微透科技股份有限公司 | Traffic sound barrier high acoustic absorption combined material and preparation method thereof |
| CN103660477A (en) * | 2013-12-03 | 2014-03-26 | 常州市泛亚微透科技有限公司 | Textile fabric composite sound-absorbing lamination fabric for automobile internal decoration and manufacturing method thereof |
| CN103660474A (en) * | 2013-12-03 | 2014-03-26 | 常州市泛亚微透科技有限公司 | Nonwoven fabric composite sound-absorbing lamination fabric for automobile internal decoration and manufacturing method thereof |
| WO2017140097A1 (en) * | 2016-02-15 | 2017-08-24 | 江苏泛亚微透科技股份有限公司 | Composite expanded polytetrafluoroethylene film-polyurethane foam surface full-frequency band strong sound-absorption sheet and preparation method therefor |
| CN107379665A (en) * | 2017-08-01 | 2017-11-24 | 湖北天运消音防振新材料有限公司 | A kind of two-component acoustical cotton for possessing superpower sound-absorbing effect |
| CN107829846A (en) * | 2017-10-27 | 2018-03-23 | 四川森洁燃气设备有限公司 | A kind of feed pipe for automobile fuel gas conveying |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Full-frequency sound absorbing cotton Effective date of registration: 20130116 Granted publication date: 20120905 Pledgee: Industrial Commercial Bank of China Ltd Changzhou branch Pledgor: Pan Asian Mirovent Tech (Changzhou) Co., Ltd. Registration number: 2013990000036 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20140421 Granted publication date: 20120905 Pledgee: Industrial Commercial Bank of China Ltd Changzhou branch Pledgor: Pan Asian Mirovent Tech (Changzhou) Co., Ltd. Registration number: 2013990000036 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Full-frequency sound absorbing cotton Effective date of registration: 20140424 Granted publication date: 20120905 Pledgee: Industrial Commercial Bank of China Ltd Changzhou branch Pledgor: Pan Asian Mirovent Tech (Changzhou) Co., Ltd. Registration number: 2014990000291 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151218 Granted publication date: 20120905 Pledgee: Industrial Commercial Bank of China Ltd Changzhou branch Pledgor: Pan Asian Mirovent Tech (Changzhou) Co., Ltd. Registration number: 2014990000291 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213165, No. 28-8, Sakamoto Road, Sakamoto village, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee after: JIANGSU PAN ASIAN MICROVENT TECHNOLOGY CO., LTD. Address before: 213165, No. 28-8, Sakamoto Road, Sakamoto village, Lijia Town, Wujin District, Jiangsu, Changzhou Patentee before: Pan Asian Mirovent Tech (Changzhou) Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |