CN105383132A - High sound absorbing nonwoven cloth lining for automobile trunk cover and preparation method thereof - Google Patents
High sound absorbing nonwoven cloth lining for automobile trunk cover and preparation method thereof Download PDFInfo
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- CN105383132A CN105383132A CN201510915802.XA CN201510915802A CN105383132A CN 105383132 A CN105383132 A CN 105383132A CN 201510915802 A CN201510915802 A CN 201510915802A CN 105383132 A CN105383132 A CN 105383132A
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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
- B32B27/06—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
- B32B27/10—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 paper or cardboard
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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
- B32B27/32—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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
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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
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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
- B32B5/22—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—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 the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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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
- 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
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/10—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles
- B62D25/105—Bonnets or lids, e.g. for trucks, tractors, busses, work vehicles for motor cars
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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
- B32B2037/1238—Heat-activated adhesive in the form of powder
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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
- 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
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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
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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
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
Abstract
The invention discloses a high sound absorbing nonwoven cloth lining for automobile trunk cover and a preparation method thereof. The polyester fiber layer comprises a three layer structure, wherein the densities of three layers decrease along the thickness direction. Three layers are a compact layer, a semi-compact layer, and a fluffy layer. Between two neighbored layers of three layers, a hot melted powder layer is arranged, through the hot melted powder layers, three layers are tightly adhered together; an expanded polytetrafluoroethylene microporous film layer is combined on the surface of the fluffy layer; a damping rubber layer is combined on the surface of the compact layer, and a release paper protective layer, which is removed before using, is combined on the surface of the damping rubber layer. Through the technical scheme mentioned above, the lightness requirement of automobile can be met, the comfortableness index of automobile is increased, the space in automobile is enlarged, and the noise in automobile is reduced. The damping rubber on polyester nonwoven cloth can reduce the low frequency noise, which is generated by the vibration caused by high speed driving, the damping rubber is unique; the comfortableness for passengers in automobile is improved, the fatigue caused by noise is relieved, and the driving becomes safer.
Description
Technical field
The present invention relates to automotive upholstery field, vehicle boot lid non-woven fabric inside lining part particularly relating to a kind of high acoustic absorption and preparation method thereof.
Background technology
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 are attempted to solve sound insulation problem.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 meaning, 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, on automobile, after application, noise reduction is general, now or German acoustical cotton cotton from the gradient of imported from America needs that grammes per square metre is comparatively large, the thicker acoustically effective that could obtain of thickness, namely the cotton and acoustical cotton of the gradient of import is because adding oil consumption and have compressed the useful space in car, 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, thus promotes vehicle boot lid non-woven fabric inside lining part and preparation method thereof of the high acoustic absorption of car comfort index.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the vehicle boot lid non-woven fabric inside lining part providing a kind of high acoustic absorption, comprise: expanded PTFE microporous film layers, layer of polyester fiber, damping glue-line and protective layer, described layer of polyester fiber comprises the three-decker of successively decreasing successively along thickness direction density, close bed, half close bed and loft layer respectively, 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;
Loft layer surface recombination has expanded PTFE microporous film layers, and close bed surface recombination has damping glue-line, and damping glue-line surface recombination has the release liners protective layer removed during use.
The invention still further relates to a kind of preparation method of vehicle boot lid non-woven fabric inside lining part of sound absorption, comprising the following steps:
1) prepare respectively density be closely, half tight and fluffy non-woven fabrics, and spray thermal fusing powder at each interlayer, by roll compacting technique, three-decker strong bond formed layer of polyester fiber;
2) at loft non-woven cloth surface sprinkling thermal fusing powder, heating temperatures reaches the fusing point of thermal fusing powder, then with eptfe membrane lamination joint;
3) through rolling after the assay was approved, then unreel;
4) in the surface spraying damping glue of tight non-woven fabrics, damping glue covers release liners, through being wound into coiled material after the assay was approved, entering down and cutting operation together;
5) by the releasing coil of rolling, carry out cross cutting processing, waste material is discharged, and packaging of testing, namely completes the preparation of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption.
In a preferred embodiment of the present invention, closely, the preparation method of half tight and fluffy non-woven fabrics 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 fleece shaping roll compacting, by controlling roll compacting power size, obtain density be closely, half tight and fluffy non-woven fabrics;
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely complete preparation.
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, thus promote car comfort index, expand taking space and reducing the noise in automobile in automobile.Damping glue on polyester non-woven fabric 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.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., fenestra road multilayer complications are irregular, when noise waves 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.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 of vehicle boot lid non-woven fabric inside lining part one preferred embodiment of high acoustic absorption 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 vehicle boot lid non-woven fabric inside lining part for high acoustic absorption, comprising: expanded PTFE microporous film layers 1, layer of polyester fiber 2, damping glue-line 3 and protective layer 4.
Described layer of polyester fiber 2 comprises the three-decker of successively decreasing successively along thickness direction density, close bed 5, half close bed 6 and loft layer 7 respectively, hot melt bisque is equipped with, by hot melt bisque by 3-tier architecture fixed bonding between close bed 5, half close bed 6 and each layer of loft layer 7.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.
Loft layer 7 surface recombination has expanded PTFE microporous film layers 1, and close bed 5 surface recombination has damping glue-line 3, and damping glue-line 3 surface recombination has the release liners protective layer 4 removed during use.
The expanded PTFE microporous barrier in the intensive micron order duct of staggered floor abnormity is had at loft layer 7 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.
Release liners protective layer 4 can at transport and storage protection damping glue-line.Directly can glue note after removing release liners protective layer, automobile efficiency of construction is higher.
The preparation method of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption of the present invention, comprises the following steps:
1) prepare respectively density be closely, half tight and fluffy non-woven fabrics, and spray thermal fusing powder at each interlayer, by roll compacting technique, three-decker strong bond formed layer of polyester fiber 2;
2) at loft non-woven cloth surface sprinkling thermal fusing powder, heating temperatures reaches the fusing point of thermal fusing powder, then overlays conjunction with eptfe membrane layer 1;
3) through rolling after the assay was approved, then unreel;
4) in the surface spraying damping glue of tight non-woven fabrics, damping glue covers release liners, through being wound into coiled material after the assay was approved, entering down and cutting operation together;
5) by the releasing coil of rolling, carry out cross cutting processing, waste material is discharged, and packaging of testing, namely completes the preparation of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption.
Closely, the preparation method of half tight and fluffy non-woven fabrics comprises:
1) prepare fire-retardant polyester staple fiber, comprise polypropylene PP, polyethylene terephtalate or polythene PE fire retardant staple length fibers, and shredding is carried out to short fiber;
2) staple card after shredding is become fleece, staple card is become fleece by dazzling 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 fleece shaping roll compacting, by controlling roll compacting power size, obtain density be closely, half tight and fluffy non-woven fabrics;
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely complete preparation.
The non-woven fabrics of polyester fiber is to low frequency, the noise such as intermediate frequency and high-frequency has more outstanding sound-absorbing soundproof effect, the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption is lightweight due to it, 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.
The present invention possesses the sound-absorption coefficient of different brackets, can meet users ' individualized requirement, the inner consolidation of cloth closely, good flame resistance (meets DIN75200, VWTL1010 and UL94-V0 standard), volatilization, atomization, smell and content of formaldehyde are not yielding lower than conventional limit value, corrosion-resistant, humidity, the parts made by pure thermoplastic shape, without the need to adding a cover nonwoven sheet, directly sticky note, automobile efficiency of construction is higher.
Meet the demand of the fast development of automobile industry Promote Competitive, by automotive trim acoustical cotton component technology innovation research, substitute import and outlet, break the situation in the high-grade acoustical cotton market of external monopolization China, for the cost reducing automobile provides possibility.
The present invention meets the new demand of automotive light weight technology, thus promotes car comfort index, expands taking space and reducing the noise in automobile in automobile.Damping glue on polyester non-woven fabric 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.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., fenestra road multilayer complications are irregular, when noise waves 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.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 (5)
1. the vehicle boot lid of high acoustic absorption non-woven fabric inside lining part, it is characterized in that, comprise: expanded PTFE microporous film layers, layer of polyester fiber, damping glue-line and protective layer, described layer of polyester fiber comprises the three-decker of successively decreasing successively along thickness direction density, close bed, half close bed and loft layer respectively, 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;
Loft layer surface recombination has expanded PTFE microporous film layers, and close bed surface recombination has damping glue-line, and damping glue-line surface recombination has the release liners protective layer removed during use.
2. the preparation method of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption according to claim 1, is characterized in that, comprise the following steps:
1) prepare respectively density be closely, half tight and fluffy non-woven fabrics, and spray thermal fusing powder at each interlayer, by roll compacting technique, three-decker strong bond formed layer of polyester fiber;
2) at loft non-woven cloth surface sprinkling thermal fusing powder, heating temperatures reaches the fusing point of thermal fusing powder, then with eptfe membrane lamination joint;
3) through rolling after the assay was approved, then unreel;
4) in the surface spraying damping glue of tight non-woven fabrics, damping glue covers release liners, through being wound into coiled material after the assay was approved, entering down and cutting operation together;
5) by the releasing coil of rolling, carry out cross cutting processing, waste material is discharged, and packaging of testing, namely completes the preparation of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption.
3. the preparation method of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption according to claim 2, is characterized in that, closely, the preparation method of half tight and fluffy non-woven fabrics 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 fleece shaping roll compacting, by controlling roll compacting power size, obtain density be closely, half tight and fluffy non-woven fabrics;
5) and then carry out acupuncture, air-cooled, cut deburring, rolling, cut-out, after the assay was approved, namely complete preparation.
4. the preparation method of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption 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.
5. the preparation method of the vehicle boot lid non-woven fabric inside lining part of high acoustic absorption 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 |
|---|---|---|---|
| CN201510915802.XA CN105383132A (en) | 2015-12-14 | 2015-12-14 | High sound absorbing nonwoven cloth lining for automobile trunk cover and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510915802.XA CN105383132A (en) | 2015-12-14 | 2015-12-14 | High sound absorbing nonwoven cloth lining for automobile trunk cover and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105383132A true CN105383132A (en) | 2016-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510915802.XA Pending CN105383132A (en) | 2015-12-14 | 2015-12-14 | High sound absorbing nonwoven cloth lining for automobile trunk cover and preparation method thereof |
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| CN109130340A (en) * | 2018-07-20 | 2019-01-04 | 无锡吉兴汽车声学部件科技有限公司 | A kind of absorbing sound and lowering noise decorative panel and its preparation method and application |
| CN111712378A (en) * | 2018-02-23 | 2020-09-25 | 宝马股份公司 | Roof element for a convertible, roof and convertible |
| CN113334875A (en) * | 2021-06-09 | 2021-09-03 | 石家庄誉尚金属复合材料有限公司 | Heat-preserving heat-insulating sound-absorbing sound barrier decorative composite board |
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| CN111712378A (en) * | 2018-02-23 | 2020-09-25 | 宝马股份公司 | Roof element for a convertible, roof and convertible |
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| CN113334875A (en) * | 2021-06-09 | 2021-09-03 | 石家庄誉尚金属复合材料有限公司 | Heat-preserving heat-insulating sound-absorbing sound barrier decorative composite board |
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Application publication date: 20160309 |