CN105252871A - Polyester nonwoven fabric having three-layer structure and realizing automobile lightweight, and preparation method thereof - Google Patents
Polyester nonwoven fabric having three-layer structure and realizing automobile lightweight, and preparation method thereof Download PDFInfo
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- CN105252871A CN105252871A CN201510609877.5A CN201510609877A CN105252871A CN 105252871 A CN105252871 A CN 105252871A CN 201510609877 A CN201510609877 A CN 201510609877A CN 105252871 A CN105252871 A CN 105252871A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/14—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by a layer differing constitutionally or physically in different parts, e.g. denser near its faces
- B32B5/145—Variation across the thickness of the layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/306—Resistant to heat
- B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a polyester nonwoven fabric having a three-layer structure and realizing automobile lightweight. The polyester nonwoven fabric comprises a compact layer, a semi-compact layer and a fluffy layer, the densities of the compact layer, the semi-compact layer and the fluffy layer successively decrease along the thickness direction of the nonwoven fabric, a hot melt powder layer is arranged between every two adjacent layers, and the above three-layer structure is fixedly bonded through the hot melt powder layers. A preparation method of the polyester nonwoven fabric comprises the following steps: preparing a sound absorption cotton sheet with the compact layer, the semi-compact layer and the fluffy layer, unreeling the prepared sound absorption cotton sheet, sprinkling the hot melt powder between every two adjacent layers, and carrying out a roll compacting process to bond and fix the three layer structure. The polyester nonwoven fabric prepared in the above mode has the advantages of light weight, good elasticity, flame retardation, good sound absorption and insulation effects, environmental protection and no peculiar smell, can be massively used in automobile interior decorative parts to realize sound insulation, vibration reduction and cost reduction effects, and can meet automobile lightweight new requirements in order to improve the automobile comfortableness index, enlarge the riding space in an automobile and reduces noises in the automobile.
Description
Technical field
The present invention relates to non-woven fabrics field, particularly relate to polyester non-woven fabric of a kind of automotive light weight technology of three-decker and preparation method thereof.
Background technology
Automobile noise is divided into pass-by noise and internal car noise.Pass-by noise refers to the noise of automobile each several part noise radiation to the car external space, mainly contains engine noise, exhaust noise, tyre noise, brake oil and noise of driving system etc.Internal car noise refers to that the automobile each several part noise outside compartment imports the noise of structural vibration to radiation in compartment that part noise in car and automobile each several part vibration transfer path excite each parts of vehicle body by all means into, these noise sound waves are under the restriction of interior space acoustic characteristic, generate comparatively complicated reverberant field, thus form internal car noise.
The impact of car noise on health is many-sided.Function of noise, in the central nervous system of people, makes the corticocerebral excitement of people and suppresses dysequilibrium, causes conditioned reflex abnormal, cerebrovascular tension force is damaged.These physiological changes, can restore to the original state in early days, but the time one is of a specified duration, will cause the change on pathology, make that people produces headache, brain is swollen, tinnitus, have a sleepless night, be losing one's memory and the symptom such as general fatigue is unable.If pregnant woman takes the larger vehicle of noise for a long time, noise can by acting on central nervous system effects development of fetus.
Car noise not only increases the fatigue of driver and occupant, and affects the driving safety of automobile.On the other hand, noise also has serious harmful effect to digestive system, cardiovascular system, can cause indigestion, poor appetite, n and V, thus cause the incidence of disease of stomach trouble and gastric ulcer to improve, the incidence of disease of hypertension, artery sclerosis and coronary heart disease is significantly improved than normal condition.Noise also can cause harmful effect to the organs of vision.
The materials such as prior art adopts such as mineral wool, rock wool, sponge, polystyrene perlite, attempt to solve sound insulation problem.But although they can solve the sound insulation problem in our space, in our life, buried potential safety hazard, such as mineral wool, rock wool, it can cause pruitus, respiratory tract anaphylaxis.Easily absorb water during cleaning, increase oil consumption, sponge etc. are inflammable products, and can produce toxic gas in combustion.A large amount of use pitch damping vibration attenuation backing plate in current automobile, soundproof effect is poor, causes in automobile and has peculiar smell, and some vehicle tastes are unpleasant.Dizzy uncomfortable after permanent, affect running driving safety.The acoustic absorptivity of acoustical cotton (being only fluffy cotton) is in the market very little, and on automobile, after application, noise reduction is general, can not meet the requirements at the higher level of automotive light weight technology and car comfort.
Summary of the invention
The technical problem that the present invention mainly solves is to provide that a kind of thickness is thinning, and grammes per square metre diminishes, and can meet the new demand of automotive light weight technology, thus promotes polyester non-woven fabric of the automotive light weight technology of the three-decker of car comfort index and preparation method thereof.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the polyester non-woven fabric providing a kind of automotive light weight technology of three-decker, successively decrease along nonwoven thickness direction density and comprise close bed, half close bed and loft layer successively, hot melt bisque is equipped with, by hot melt bisque by 3-tier architecture fixed bonding between each layer.
For solving the problems of the technologies described above, another technical solution used in the present invention is: the preparation method providing a kind of polyester non-woven fabric of automotive light weight technology of three-decker, first preparation has the acoustical cotton sheet material of close bed, half close bed and loft layer, then the acoustical cotton sheet material prepared is unreeled, and spray thermal fusing powder at each interlayer, finally by roll compacting technique, 3-tier architecture is adhesively fixed, i.e. the polyester non-woven fabric of the automotive light weight technology of obtained three-decker.
In a preferred embodiment of the present invention, the preparation method with the acoustical cotton sheet material of close bed, half close bed and loft layer comprises:
1) prepare fire-retardant polyester staple fiber, and shredding is carried out to short fiber;
2) staple card after shredding is become fleece;
3) lapping is carried out, bonding by carrying out in drying room after short fiber lapping;
4) by pressure and the temperature level of the roll compacting of lapping bonding rear control fleece, stratum reticulare is made to form at thickness direction the structure that close bed, half close bed and loft layer density successively decreases;
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely make acoustical cotton sheet material.
In a preferred embodiment of the present invention, roll compacting technique is realized by shaping press, is adhesively fixed by 3-tier architecture by shaping press.
In a preferred embodiment of the present invention, described fire-retardant polyester staple fiber comprises polypropylene PP, polyethylene terephtalate or polythene PE fire retardant staple length fibers.
In a preferred embodiment of the present invention, short fiber shredding first carries out pre-shredding to short fiber, then carry out main shredding.
The invention has the beneficial effects as follows: the present invention is lightweight, good springiness, fire-retardant, sound-absorbing sound insulation value is effective, environment-protective no-smell can be used in automotive upholstery in a large number, the effect playing sound insulation vibration damping and reduce costs, relative to general acoustical cotton comparatively speaking, thickness is thinning for the thickness of polyester non-woven fabric, grammes per square metre diminishes, the new demand of automotive light weight technology can be met, thus promote car comfort index, expand taking space and reducing the noise in automobile in automobile.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the structural representation of polyester non-woven fabric one preferred embodiment of the automotive light weight technology of three-decker of the present invention.
Detailed description of the invention
Be clearly and completely described to the technical scheme in the embodiment of the present invention below, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the embodiment of the present invention comprises:
A polyester non-woven fabric for the automotive light weight technology of three-decker, successively decreases along nonwoven thickness direction density and comprises close bed 1, half close bed 2 and loft layer 3 successively.
Hot melt bisque is equipped with, by hot melt bisque by 3-tier architecture fixed bonding between each layer.At interlayer, by spraying, appropriate thermal fusing powder pressing is bonding cries firmly, not easily layering, and has the requirement meeting automotive upholstery flame-retarding characteristic.
The preparation method of the polyester non-woven fabric of the automotive light weight technology of three-decker, first preparation has the acoustical cotton sheet material of close bed 1, half close bed 2 and loft layer 3, then the acoustical cotton sheet material prepared is unreeled, and spray thermal fusing powder at each interlayer, finally by roll compacting technique, 3-tier architecture is adhesively fixed, i.e. the polyester non-woven fabric of the automotive light weight technology of obtained three-decker.
Roll compacting technique is realized by shaping press, is adhesively fixed by 3-tier architecture by shaping press.Not easily layering, and there is the requirement meeting automotive upholstery flame-retarding characteristic.
Wherein, the preparation method with the acoustical cotton sheet material of close bed 1, half close bed 2 and loft layer 3 comprises:
1) prepare fire-retardant polyester staple fiber and comprise polypropylene PP, polyethylene terephtalate or polythene PE fire retardant staple length fibers, and pre-shredding is carried out to short fiber, then carry out main shredding.
2) give carding machine feed by after shredding, staple card is become fleece by carding machine, and exports, the preferred double cylinder and double doffer carding machine of the present invention.
3) lapping machine carries out lapping, bonding by carrying out in drying room after short fiber lapping.
4) by pressure and the temperature level of the roll compacting of lapping bonding rear control fleece, the structure that stratum reticulare successively decreases at thickness direction formation close bed 1, half close bed 2 and loft layer 3 density is made.
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely make acoustical cotton sheet material.
Between sheet layer, by spraying, appropriate LDPE thermal fusing powder pressing is bonding cries firmly, not easily layering, and there is the requirement meeting automotive upholstery flame-retarding characteristic, just a kind of polyester non-woven fabric of automotive light weight technology of three-decker is produced through above-mentioned technical process, this polyester non-woven fabric is to low frequency, the noise such as intermediate frequency and high-frequency has outstanding sound-absorbing soundproof effect, a kind of polyester non-woven fabric of automotive light weight technology of three-decker is lightweight due to it, good springiness, fire-retardant, sound-absorbing sound insulation value is effective, environment-protective no-smell can be used in automotive upholstery in a large number, the effect playing sound insulation vibration damping and reduce costs, due to this polyester non-woven fabric thickness relative to general acoustical cotton comparatively speaking, thickness is thinning, grammes per square metre diminishes, the new demand of automotive light weight technology can be met, thus promote car comfort index, expand taking space and reducing the noise in automobile in automobile.
Sound-absorbing mainly will solve the reflection of sound and the noisy sense produced, and sound-absorbing material can the reflected energy of attenuate incident source of sound, thus reaches the attenuating to original sound source.Sound insulation mainly solves the transmission of sound and makes main body in space, feel noisy sense, and Sound-proof material material can the transmission potential of attenuate incident source of sound, thus reaches the rest state of principal space.Polyester non-woven fabric sound absorbing mechanism is that the close bed that density is larger can be reflected back a part of noise energy, part noise energy enters the hole that material internal has connection small in a large number, sound wave can go deep into material internal along these holes, cause the air molecule in material void to vibrate, with polyester fiber friction, acoustic energy is converted into heat energy, thus make polyester non-woven fabric can delete partial noise energy.
Polyester non-woven fabric of the present invention is particularly useful for the application of the inside gadget aspects such as truck, passenger vehicle and automobile, and shape and structure, thickness and area are not limit.
Thermal fusing powder also can substitute interlayer cling-materials with the non-woven fabrics of the little grammes per square metre of low melting point.
Polyester non-woven fabric of the present invention is high-efficiency fiber absorptive product, excellent sound absorbing, has the attraction rate of different brackets, can meet the different demands of user; Non-woven fabrics internal structure consolidation is tight, and good flame retardation effect, meets DIN75200, VWTL1010 and UL94-V0 standard; Volatilization, atomization, smell and content of formaldehyde are lower than conventional limit value; Corrosion-resistant, humidity, the parts made by pure thermoplastic shape are not yielding; Non-woven fabrics polishes through single or double, without the need to adding a cover nonwoven sheet.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. the polyester non-woven fabric of the automotive light weight technology of a three-decker, it is characterized in that, successively decrease along nonwoven thickness direction density and comprise close bed, half close bed and loft layer successively, be equipped with hot melt bisque between each layer, by hot melt bisque by 3-tier architecture fixed bonding.
2. the preparation method of the polyester non-woven fabric of the automotive light weight technology of three-decker according to claim 1, it is characterized in that, first preparation has the acoustical cotton sheet material of close bed, half close bed and loft layer, then the acoustical cotton sheet material prepared is unreeled, and spray thermal fusing powder at each interlayer, finally by roll compacting technique, 3-tier architecture is adhesively fixed, i.e. the polyester non-woven fabric of the automotive light weight technology of obtained three-decker.
3. the preparation method of the polyester non-woven fabric of the automotive light weight technology of three-decker according to claim 2, is characterized in that, the preparation method with the acoustical cotton sheet material of close bed, half close bed and loft layer comprises:
1) prepare fire-retardant polyester staple fiber, and shredding is carried out to short fiber;
2) staple card after shredding is become fleece;
3) lapping is carried out, bonding by carrying out in drying room after short fiber lapping;
4) by pressure and the temperature level of the roll compacting of lapping bonding rear control fleece, stratum reticulare is made to form at thickness direction the structure that close bed, half close bed and loft layer density successively decreases;
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely make acoustical cotton sheet material.
4. the preparation method of the polyester non-woven fabric of the automotive light weight technology of three-decker according to claim 2, is characterized in that, roll compacting technique is realized by shaping press, is adhesively fixed by 3-tier architecture by shaping press.
5. the preparation method of the polyester non-woven fabric of the automotive light weight technology of three-decker according to claim 3, is characterized in that, described fire-retardant polyester staple fiber comprises polypropylene PP, polyethylene terephtalate or polythene PE fire retardant staple length fibers.
6. the preparation method of the polyester non-woven fabric of the automotive light weight technology of three-decker according to claim 3, is characterized in that, short fiber shredding first carries out pre-shredding to short fiber, then carry out main shredding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609877.5A CN105252871A (en) | 2015-09-23 | 2015-09-23 | Polyester nonwoven fabric having three-layer structure and realizing automobile lightweight, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609877.5A CN105252871A (en) | 2015-09-23 | 2015-09-23 | Polyester nonwoven fabric having three-layer structure and realizing automobile lightweight, and preparation method thereof |
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| CN105252871A true CN105252871A (en) | 2016-01-20 |
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| CN201510609877.5A Pending CN105252871A (en) | 2015-09-23 | 2015-09-23 | Polyester nonwoven fabric having three-layer structure and realizing automobile lightweight, and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739226A (en) * | 2016-12-13 | 2017-05-31 | 德阳永盛无纺制品有限公司 | A kind of automotive trim sound-adsorbing sound-insulating hung needle punched non-woven fabrics and preparation method thereof |
| WO2019051761A1 (en) * | 2017-09-15 | 2019-03-21 | 3M Innovative Properties Company | Non-woven fibrous web and methods thereof |
| CN110284262A (en) * | 2019-07-25 | 2019-09-27 | 常熟市嘉淀纺织有限公司 | A kind of fire-retardant sound-absorbing polyester fiber board and preparation method thereof |
| CN112805508A (en) * | 2018-08-06 | 2021-05-14 | 泽费罗斯股份有限公司 | Gas pipeline with sound absorption part |
| CN109949787B (en) * | 2019-03-29 | 2024-04-30 | 保定市宏腾科技有限公司 | PET sound absorbing cotton and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5817408A (en) * | 1996-09-25 | 1998-10-06 | Nissan Motor Co., Ltd. | Sound insulation structure |
| US20040238275A1 (en) * | 2003-05-28 | 2004-12-02 | Hans-Peter Keller | Sound absorbers |
| CN202098058U (en) * | 2011-04-09 | 2012-01-04 | 江阴协统汽车附件有限公司 | GFP plate formed automobile interior part |
| CN205130552U (en) * | 2015-09-23 | 2016-04-06 | 常州市泛亚汽车饰件有限公司 | Polyester non -woven fabrics that three layer construction's vehicle lightweight used |
-
2015
- 2015-09-23 CN CN201510609877.5A patent/CN105252871A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5817408A (en) * | 1996-09-25 | 1998-10-06 | Nissan Motor Co., Ltd. | Sound insulation structure |
| US20040238275A1 (en) * | 2003-05-28 | 2004-12-02 | Hans-Peter Keller | Sound absorbers |
| CN202098058U (en) * | 2011-04-09 | 2012-01-04 | 江阴协统汽车附件有限公司 | GFP plate formed automobile interior part |
| CN205130552U (en) * | 2015-09-23 | 2016-04-06 | 常州市泛亚汽车饰件有限公司 | Polyester non -woven fabrics that three layer construction's vehicle lightweight used |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106739226A (en) * | 2016-12-13 | 2017-05-31 | 德阳永盛无纺制品有限公司 | A kind of automotive trim sound-adsorbing sound-insulating hung needle punched non-woven fabrics and preparation method thereof |
| CN106739226B (en) * | 2016-12-13 | 2019-01-08 | 德阳永盛无纺制品有限公司 | A kind of sound-adsorbing sound-insulating hung needle punched non-woven fabrics for automobile interiors and preparation method thereof |
| WO2019051761A1 (en) * | 2017-09-15 | 2019-03-21 | 3M Innovative Properties Company | Non-woven fibrous web and methods thereof |
| CN111094639A (en) * | 2017-09-15 | 2020-05-01 | 3M创新有限公司 | Nonwoven fibrous webs and methods thereof |
| CN112805508A (en) * | 2018-08-06 | 2021-05-14 | 泽费罗斯股份有限公司 | Gas pipeline with sound absorption part |
| CN109949787B (en) * | 2019-03-29 | 2024-04-30 | 保定市宏腾科技有限公司 | PET sound absorbing cotton and preparation method thereof |
| CN110284262A (en) * | 2019-07-25 | 2019-09-27 | 常熟市嘉淀纺织有限公司 | A kind of fire-retardant sound-absorbing polyester fiber board and preparation method thereof |
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Application publication date: 20160120 |