CN105252865A - Polyester nonwoven fabric for greatly reducing noises and realizing automobile lightweight, and preparation method thereof - Google Patents
Polyester nonwoven fabric for greatly reducing noises and realizing automobile lightweight, and preparation method thereof Download PDFInfo
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- CN105252865A CN105252865A CN201510609819.2A CN201510609819A CN105252865A CN 105252865 A CN105252865 A CN 105252865A CN 201510609819 A CN201510609819 A CN 201510609819A CN 105252865 A CN105252865 A CN 105252865A
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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
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
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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
- B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
- B32B27/322—Layered products comprising a layer of synthetic resin comprising polyolefins comprising halogenated polyolefins, e.g. PTFE
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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
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1284—Application of adhesive
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
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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
- B32B5/18—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 features of a layer of foamed material
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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
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/06—Interconnection of layers permitting easy separation
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
- B32B37/1207—Heat-activated adhesive
- B32B2037/1215—Hot-melt adhesive
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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
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
- B32B37/26—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer which influences the bonding during the lamination process, e.g. release layers or pressure equalising layers
- B32B2037/268—Release layers
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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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
- B32B2307/102—Insulating
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Nonwoven Fabrics (AREA)
- Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
Abstract
The invention discloses a polyester nonwoven fabric for greatly reducing noises and realizing automobile lightweight. The polyester nonwoven fabric sequentially 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 a polyester fiber lamella, the surface of the compact layer is compounded with a damping glue layer, and the surface of the fluffy layer is compounded with an expanded polytetrafluoroethylene film layer. A preparation method of the polyester nonwoven fabric comprises the following steps: sprinkling hot melt powder among the compact layer, the semi-compact layer and the fluffy layer of the polyester fiber lamella, sprinkling the hot melt powder on the surface of the fluffy layer, heating, and laminating the heated compact layer, the semi-compact layer and the fluffy layer to the expanded polytetrafluoroethylene film of the polytetrafluoroethylene film layer; and spraying damping glue of the damping glue layer on the compact layer. The polyester nonwoven fabric prepared in the above mode meets new requirements of automobile lightweight, enlarges the riding space in an automobile, and reduces noises in the automobile; and the damping glue can reduce low frequency noises generated due to vibration in the fast traveling process of the automobile, improves the comfort level of people in the automobile, reduces noise fatigue, and makes driving be safe.
Description
Technical field
The present invention relates to non-woven fabrics field, particularly relate to and a kind ofly significantly reduce polyester non-woven fabric of the automotive light weight technology of noise 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 a kind of new demand that can meet automotive light weight technology, expand taking space and reducing the noise in automobile in automobile, promote the comfort level of vapour occupant, reduce acoustic fatigue, drive a vehicle and safer significantly reduce polyester non-woven fabric of the automotive light weight technology of noise and preparation method thereof.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of polyester non-woven fabric significantly reducing the automotive light weight technology of noise, comprise: polyester fiber lamella and damping glue-line, successively decrease along polyester fiber lamella thickness direction density and comprise close bed, half close bed and loft layer successively, described close bed surface recombination has damping glue-line, has eptfe membrane layer in loft layer surface recombination.
In a preferred embodiment of the present invention, described damping glue-line surface recombination has the release liners protective layer removed during use.
In a preferred embodiment of the present invention, close bed, be equipped with hot melt bisque between half close bed and each layer of loft layer, by hot melt bisque by 3-tier architecture fixed bonding.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of preparation method significantly reducing the polyester non-woven fabric of the automotive light weight technology of noise, comprise the following steps:
1) the lamellose polyester fiber thin slice of polyester fiber is prepared;
2) touch at the interlayer of the close bed of polyester fiber thin slice, half close bed and loft layer and spill thermal fusing powder, by roll compacting technique by three-decker strong bond;
3) at the surface sprinkling thermal fusing powder of loft layer, heating eptfe membrane that is rear and eptfe membrane layer is fitted;
4) through rolling after the assay was approved, then unreel;
5) in the damping glue of close bed spraying damping glue-line;
6) in the release liners of the surface recombination release liners protective layer of damping glue, through then completing the preparation of the polyester non-woven fabric of the automotive light weight technology significantly reducing noise after the assay was approved.
In a preferred embodiment of the present invention, polyester fiber preparation of sections method 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, simultaneously hyperthermia drying sterilization;
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely make polyester fiber thin slice.
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 meets the new demand of automotive light weight technology, expand taking space and reducing the noise in automobile in automobile; Damping glue can reduce the low frequency noise that vehicle produces because of vibration when fast running, takes the course of its own in damping material.Promote the comfort level of vapour occupant, reduce acoustic fatigue, drive a vehicle safer.Expanded PTFE microporous barrier can play the acoustical absorptivity improving this polyester non-woven fabric further.Expanded PTFE microporous barrier has the resistant to pollution ability of water and oil repellant, easy cleaning.
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 that the present invention significantly reduces polyester non-woven fabric of the automotive light weight technology of noise and preparation method thereof preferred embodiment.
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:
Significantly reduce a polyester non-woven fabric for the automotive light weight technology of noise, comprising: polyester fiber lamella and damping glue-line 4, successively decreasing along polyester fiber lamella thickness direction density comprises close bed 1, half close bed 2 and loft layer 3 successively.
Described close bed 1 surface recombination has damping glue-line 4, and described damping glue-line 4 surface recombination has the release liners protective layer 5 removed during use, and release liners protective layer 5 can at transport and storage protection damping glue-line 4.Directly can glue note after removing release liners protective layer 5, automobile efficiency of construction is higher.
Eptfe membrane layer 6 is had in loft layer 3 surface recombination.The expanded PTFE microporous barrier in the intensive micron order duct of staggered floor abnormity is had at loft layer 3 outer surface compound one deck, eptfe membrane there is countless micropore, the feature of these micropores be aperture little (0 ~ 0.018mm) not etc., duct complications are irregular, when sound wave rubs by producing with the air in hole during micropore, convert thermal energy consumption to fall, therefore it can play the acoustical absorptivity improving this polyester non-woven fabric further.
Hot melt bisque is equipped with, by hot melt bisque by 3-tier architecture fixed bonding between close bed 1, half close bed 2 and each layer of loft layer 3.Plate firmly bonding by spraying appropriate LDPE thermal fusing powder at each interlayer, not easily layering, and there is the requirement meeting automotive upholstery flame-retarding characteristic.
Significantly reduce a preparation method for the polyester non-woven fabric of the automotive light weight technology of noise, comprise the following steps:
1) the lamellose polyester fiber thin slice of polyester fiber is prepared;
2) touch at close bed 1, half close bed 2 of polyester fiber thin slice and the interlayer of loft layer 3 and spill thermal fusing powder, by the roll compacting of shaping press by three-decker strong bond;
3) at the surface sprinkling thermal fusing powder of loft layer 3, heating eptfe membrane that is rear and eptfe membrane layer 6 is fitted;
4) through rolling after the assay was approved, then unreel;
5) in the damping glue of close bed spraying damping glue-line 4;
6) in the release liners of the surface recombination release liners protective layer 5 of damping glue, through then completing the preparation of the polyester non-woven fabric of the automotive light weight technology significantly reducing noise after the assay was approved.
Wherein, polyester fiber preparation of sections method 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 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, 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, simultaneously hyperthermia drying sterilization.
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely make polyester fiber thin slice.
Damping glue selects RD-104 vibration and noise reducing damping glue, is a kind of off-white color thickness paste sapecial coating.The white solid that solid rear formation intensity is fabulous.This product selects prolonged water-fast macromolecule resin emulsion, adopts Particular craft to refine and forms, have excellent vibration damping, noise reduction, have adiabatic sealing characteristics concurrently, immediately can eliminate because of vibration, impact shake ripple and the noise that are formed.This product is nontoxic, tasteless, nothing harmful volatilization composition, non-corrosiveness, is typical environmental protection viscoelasticity high-tech type damping material.To the noise that the automobile, locomotive, boats and ships, aircraft, machinery etc. that run produce, there is stronger vibration damping inhibitory action.
Its vibration and noise reducing damping glue characteristics and advantages:
1, excellent damping and anti-acoustic capability.Through Tie Ke institute, authority detects: when 20 DEG C, recombination loss factor is 0.169 η C, reaches 0.191 η C when 10 DEG C, and its damping capacity is about 5 times of PVC, and the fissipation factor of iron and steel is 1*10-4.Reach the fissipation factor of effect same, pitch type damping material needs more than 3mm thickness.For automobile, owing to adopting spraying coating process, no matter be any labyrinth surface, be coated in metal structure surface, as the position such as chassis, top board, side plate of vehicle, the low frequency noise that vehicle produces because of vibration when fast running can be reduced.Take the course of its own in damping material.
2, this vibration and noise reducing damping glue has superpower shock resistance and pliability.50cm impacts, Ф 50mm/180 ° bending nothing cracking, nothing come off, without implicit damage.
3, remarkable corrosion resistance.Dry plate 10% aqueous sulfuric acid and 10% caustic-soda aqueous solution in soak 24h stable performance; 30d performance is soaked unchanged in the salt solution of 3%.
4, excellent resistance to water.Dry plate long-term immersion in running water is non-foaming, without obscission.
5, this vibration and noise reducing damping glue strong adhesion, does not burn, good environmental adaptability, long service life.Long-Time Service under high and low temperature environment, still can keep good damping.
6, as vehicle vibration damping noise reducing damping glue and motor-car vibration and noise reducing damping glue, nontoxic, tasteless, nothing harmful volatilization composition, non-corrosiveness are typical environmental type damping special materials.
The polyester non-woven fabric that the present invention significantly reduces the automotive light weight technology of noise meets the new demand of automotive light weight technology, thus promote car comfort index (expanding taking space and reducing the noise in automobile in automobile): PE, the fire-retardant polyester staple fiber such as PET is through shredding, to carding machine feed (short fiber of shredding), carding machine output fiber becomes net, lapping, after short fiber lapping, drying room is bonding, by the bonding rear control fleece shaping press roll compacting pressure of lapping and temperature level (simultaneously hyperthermia drying sterilization), form stratum reticulare in thickness direction density by close bed, the polyester fiber non-woven fabric of the three-dimensional composition that half close bed and loft layer density are successively decreased, between this 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.
The tight aspect significantly reducing the polyester non-woven fabric of the automotive light weight technology of noise is combined with vibration and noise reducing damping glue, damping glue covers and is convenient to transport and stores release liners protective layer, the expanded PTFE microporous barrier in the intensive micron order duct of staggered floor abnormity is had at loft layer outer surface compound one deck, eptfe membrane there is countless micropore, the feature of these micropores be aperture little (0 ~ 0.018mm) not etc., duct complications are irregular, when sound wave rubs by producing with the air in hole during micropore, convert thermal energy consumption to fall, therefore it can play the acoustical absorptivity improving this polyester non-woven fabric further, just the polyester non-woven fabric of the automotive light weight technology significantly reducing noise is produced through above-mentioned technical process.
Significantly reduce the polyester non-woven fabric of the automotive light weight technology of noise to low frequency, the noise such as intermediate frequency and high-frequency has more outstanding sound-absorbing soundproof effect, significantly reducing the polyester non-woven fabric of the automotive light weight technology of noise, it is lightweight, damped elasticity is good, 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.The eptfe membrane in the intensive micron order duct of staggered floor abnormity is had at polyester non-woven fabric loft layer outer surface compound one deck, the acoustical absorptivity of further this polyester non-woven fabric of raising, 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.And the damping glue on non-woven fabrics can reduce the low frequency noise that vehicle produces because of vibration when fast running, take the course of its own in damping material.
Significantly reduce the polyester non-woven fabric of the automotive light weight technology of noise it be lightweight, damped elasticity good, 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.
The polyester non-woven fabric significantly reducing the automotive light weight technology of noise is especially useful in the application of the inside gadget aspects such as automobile, truck and passenger vehicle.
Thermal fusing powder also can substitute with the non-woven fabrics of the little grammes per square metre of low melting point and be used as interlayer cling-materials.
Automotive light weight technology polyester non-woven fabric with bonding damping layer of the present invention is high-efficiency fiber absorptive product, and 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 present invention meets the new demand of automotive light weight technology, expands taking space and reducing the noise in automobile in automobile; Damping glue can reduce the low frequency noise that vehicle produces because of vibration when fast running, takes the course of its own in damping material.Promote the comfort level of vapour occupant, reduce acoustic fatigue, drive a vehicle safer.Expanded PTFE microporous barrier can play the acoustical absorptivity improving this polyester non-woven fabric further.Expanded PTFE microporous barrier has the resistant to pollution ability of water and oil repellant, easy cleaning.
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 (7)
1. one kind is significantly reduced the polyester non-woven fabric of the automotive light weight technology of noise, it is characterized in that, comprise: polyester fiber lamella and damping glue-line, successively decrease along polyester fiber lamella thickness direction density and comprise close bed, half close bed and loft layer successively, described close bed surface recombination has damping glue-line, has eptfe membrane layer in loft layer surface recombination.
2. the polyester non-woven fabric significantly reducing the automotive light weight technology of noise according to claim 1, is characterized in that, described damping glue-line surface recombination has the release liners protective layer removed during use.
3. the polyester non-woven fabric significantly reducing the automotive light weight technology of noise according to claim 1, is characterized in that, close bed, is equipped with hot melt bisque between half close bed and each layer of loft layer, by hot melt bisque by 3-tier architecture fixed bonding.
4. the preparation method significantly reducing the polyester non-woven fabric of the automotive light weight technology of noise according to claim 1, is characterized in that, comprise the following steps:
1) the lamellose polyester fiber thin slice of polyester fiber is prepared;
2) touch at the interlayer of the close bed of polyester fiber thin slice, half close bed and loft layer and spill thermal fusing powder, by roll compacting technique by three-decker strong bond;
3) at the surface sprinkling thermal fusing powder of loft layer, heating eptfe membrane that is rear and eptfe membrane layer is fitted;
4) through rolling after the assay was approved, then unreel;
5) in the damping glue of close bed spraying damping glue-line;
6) in the release liners of the surface recombination release liners protective layer of damping glue, through then completing the preparation of the polyester non-woven fabric of the automotive light weight technology significantly reducing noise after the assay was approved.
5. the preparation method significantly reducing the polyester non-woven fabric of the automotive light weight technology of noise according to claim 4, is characterized in that, polyester fiber preparation of sections method 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, simultaneously hyperthermia drying sterilization;
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely make polyester fiber thin slice.
6. the preparation method significantly reducing the polyester non-woven fabric of the automotive light weight technology of noise according to claim 5, it is characterized in that, described fire-retardant polyester staple fiber comprises polypropylene PP, polyethylene terephtalate or polythene PE fire retardant staple length fibers.
7. the preparation method significantly reducing the polyester non-woven fabric of the automotive light weight technology of noise according to claim 5, is characterized in that, short fiber shredding first carries out pre-shredding to short fiber, then carry out main shredding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510609819.2A CN105252865A (en) | 2015-09-23 | 2015-09-23 | Polyester nonwoven fabric for greatly reducing noises and realizing automobile lightweight, and preparation method thereof |
| PCT/CN2016/096303 WO2017050081A1 (en) | 2015-09-23 | 2016-08-22 | Polyester nonwoven fabric for greatly reducing noises and realisingrealizing automobile lightnessweight, and preparation method therefor |
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| CN201510609819.2A CN105252865A (en) | 2015-09-23 | 2015-09-23 | Polyester nonwoven fabric for greatly reducing noises and realizing automobile lightweight, and preparation method thereof |
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| CN105383132A (en) * | 2015-12-14 | 2016-03-09 | 江苏泛亚微透科技股份有限公司 | High sound absorbing nonwoven cloth lining for automobile trunk cover and preparation method thereof |
| WO2017050081A1 (en) * | 2015-09-23 | 2017-03-30 | 常州市泛亚汽车饰件有限公司 | Polyester nonwoven fabric for greatly reducing noises and realisingrealizing automobile lightnessweight, and preparation method therefor |
| CN107054234A (en) * | 2016-12-22 | 2017-08-18 | 江苏泛亚微透科技股份有限公司 | A kind of lightweight car door waterproof membrane part and its preparation technology with heat preservation and soundproof noise reduction capability |
| CN109235810A (en) * | 2018-08-30 | 2019-01-18 | 深圳森阳环保材料科技有限公司 | A kind of polyester fibre acoustic panel |
| JP2019098717A (en) * | 2017-12-08 | 2019-06-24 | Ｔｏｙｏ Ｔｉｒｅ株式会社 | Manufacturing method of pneumatic tire |
| CN110978654A (en) * | 2019-12-31 | 2020-04-10 | 湖北天运消音防振新材料有限公司 | Sound-absorbing flame-retardant cotton |
| CN114316825A (en) * | 2021-11-02 | 2022-04-12 | 江苏泛亚微透科技股份有限公司 | Polyester non-woven fabric with high sound absorption coefficient and heat insulation pad |
| CN115476562A (en) * | 2022-10-20 | 2022-12-16 | 无锡市鸿庆无纺布有限公司 | Flame-retardant chemical fiber sound absorption non-woven fabric and production method thereof |
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| CN109235810A (en) * | 2018-08-30 | 2019-01-18 | 深圳森阳环保材料科技有限公司 | A kind of polyester fibre acoustic panel |
| CN110978654A (en) * | 2019-12-31 | 2020-04-10 | 湖北天运消音防振新材料有限公司 | Sound-absorbing flame-retardant cotton |
| CN114316825A (en) * | 2021-11-02 | 2022-04-12 | 江苏泛亚微透科技股份有限公司 | Polyester non-woven fabric with high sound absorption coefficient and heat insulation pad |
| CN115476562A (en) * | 2022-10-20 | 2022-12-16 | 无锡市鸿庆无纺布有限公司 | Flame-retardant chemical fiber sound absorption non-woven fabric and production method thereof |
| CN115476562B (en) * | 2022-10-20 | 2024-01-02 | 无锡市鸿庆无纺布有限公司 | Flame-retardant chemical fiber sound absorption non-woven fabric and production method thereof |
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