CN205881450U - Composite sheet and have its car - Google Patents
Composite sheet and have its car Download PDFInfo
- Publication number
- CN205881450U CN205881450U CN201620698722.3U CN201620698722U CN205881450U CN 205881450 U CN205881450 U CN 205881450U CN 201620698722 U CN201620698722 U CN 201620698722U CN 205881450 U CN205881450 U CN 205881450U
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- thin film
- puigging
- composite plate
- film
- utility
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Abstract
For the problem that sound wave acoustical absorption and sound insulation effect is not good of solving current composite sheet centering high band, the utility model provides a composite sheet. The composite sheet specifically includes the puigging, the film, the puigging interval sets up one side of film, the supporting pad, the supporting pad sets up between puigging and the film vacuole formation between puigging and the film, the supporting pad is fenestral fabric, noise -absorbing layer, noise -absorbing layer sets up the opposite side of film. The utility model discloses a composite sheet all has the better sound absorption effect that gives sound insulation to the sound wave of a plurality of frequency channels.
Description
Technical field
This utility model relates to the sound insulating sheet material technical field that absorbs sound, and is specifically related to a kind of sound absorption isolating composite plate.
Background technology
At present, predominantly one layer baffle of existing sound absorption isolating composite plate adds the structure of one layer of sheet surface layer, two-ply it
Between there is cavity, be filled with sound-absorbing material in cavity.Offering some through holes on sheet surface layer, sound wave can be entered into by through hole
In cavity.After sound wave enters in cavity, a part of acoustic wave energy vibrates back and forth between baffle and sheet surface layer and is absorbed, another
Acoustic wave segment energy is absorbed by the sound-absorbing material in cavity, reaches the purpose of noise reduction with this.
In composite plate in said structure, sheet surface layer uses the hard plate of band through hole, and low-frequency sound wave is easier through through hole
Enter cavity inside to be absorbed, but medium, high frequency acoustic ratio is easier to be reflected back, it is not easy to absorbed.This composite plate is inhaled
Acoustic performance curve reaches maximum on a certain frequency, and other frequencies all can decline.This kind of structure can not realize sound-absorbing material and exist
Preferable acoustically effective is had in medium-high frequency.
Utility model content
Absorb sound the bad problem of soundproof effect for the sound wave of medium-high frequency section to solve existing composite plate, this utility model
Provide a kind of novel composite plate.
Composite plate of the present utility model includes: puigging；Thin film, described puigging is disposed on the one of described thin film
Side；Supporting pad, described supporting pad is arranged between described puigging and thin film, and forms sky between described puigging and thin film
Chamber, described supporting pad is fenestral fabric；Absorbent treatment, described absorbent treatment is arranged on the opposite side of described thin film.
Composite plate of the present utility model utilizes thin film and puigging to form thin film cavity resonance system, plays low-frequency sound wave
Good sound absorption soundproof effect, when noise sound wave frequency is consistent with the natural frequency of thin film, thin film can be caused to resonate, thus disappear
Consume a part of acoustic wave energy, play the good noise reduction to low-frequency sound wave.Meanwhile, absorbent treatment can unrestricted play
Go out the good sound-absorbing effect of centering high frequency sound wave, make whole composite plate more preferable for the sound-proof sound-absorbing effect of each frequency range.
Under preferable case, the thickness of described cavity is 5-20mm.
Under preferable case, described puigging is rubber slab or macromolecule resin plate.
Under preferable case, described puigging is EVA plate.
Under preferable case, the thickness of described puigging is 1-3mm.
Under preferable case, described thin film is PET film or PE film.
Under preferable case, described thin film is metal forming.
Under preferable case, described thin film is the one in aluminium foil or tinfoil paper.
Under preferable case, the thickness of described thin film is 0.02mm-0.2mm.
Under preferable case, described absorbent treatment is the one in macromolecule foaming resin plate or acoustical cotton plate.
Under preferable case, the thickness of described absorbent treatment is 5mm-60mm.
Under preferable case, it is directly connected between described puigging, supporting pad, thin film and absorbent treatment or is connected by tack coat
Connect.
This utility model additionally provides a kind of automobile with above-mentioned composite plate, and described composite plate can be attached to automobile front wall
Intercept engine noise on baffle plate and be delivered to driver's cabin, or be fabricated to blimp, cover on the parts producing noise, make vapour
Car has good noise reduction.
Accompanying drawing explanation
Fig. 1 is the structural representation of composite plate of the present utility model；
Fig. 2 is the test design sketch of embodiment 1,2,3.
Detailed description of the invention
In order to make this utility model be solved the technical problem that, technical scheme and beneficial effect clearer, below
In conjunction with drawings and Examples, this utility model is described in further detail.Should be appreciated that specific embodiment described herein
Only in order to explain this utility model, it is not used to limit this utility model.
As it is shown in figure 1, composite plate of the present utility model includes puigging 101, thin film 102, supporting pad 103 and absorbent treatment
105.Described puigging 101 is arranged with thin film 102 relative spacing, and puigging 101 is arranged on the side of thin film 102.Described
Stake pad 103 is arranged between described puigging 101 and thin film 102, and forms sky between described puigging 101 and thin film 102
Chamber 104.Described absorbent treatment 105 is arranged on the opposite side of described thin film 102.
Thin film cavity resonance system is constituted between puigging 101 of the present utility model, thin film 102 and supporting pad 103, can
To play the good sound absorption soundproof effect to low-frequency sound wave.When sound wave frequency is consistent with the natural frequency of thin film 102,
Thin film 102 can be caused to produce resonance, during vibration of thin membrane, inside thin film, and frictional dissipation occurs between thin film and supporter, thus
Eliminate a part of acoustic wave energy, play the good noise reduction to low-frequency sound wave.Meanwhile, absorbent treatment 105 can be unrestricted
Give play to the good sound absorption effect of centering high frequency sound wave, made whole composite plate more preferable for the sound-proof sound-absorbing effect of each frequency range.
Described puigging 101 can select the preferable rubber slab of existing soundproof effect or macromolecule resin plate, it is preferable that
Described baffle uses EVA(ethylene-vinyl acetate copolymer) plate, inventor is found by great many of experiments, of the present utility model
Puigging uses EVA plate soundproof effect more preferable.
Thin film 102 of the present utility model can use existing macromolecular material to make, the poly-terephthaldehyde of preferably PET(
Acid second diester) film or PE(polyethylene) film；Metal forming can also be used to make, such as aluminium foil or tinfoil paper etc..Inventor is by a large amount of
Experiment finds to use PET film can produce more preferable effect in composite plate of the present utility model as thin film.This utility model
Use nonporous film, lightweight, reduce the weight of whole composite plate, and low cost of manufacture.Thin film easily produces under sound wave
, during vibration of thin membrane, inside thin film, and there is frictional dissipation, acoustic energy absorption is fallen in raw resonance between thin film and supporter.
Described supporting pad 103 can use material commonly used in the art to make, as the polyurethane in microcellular foam material is sent out
One in foam material, PE expanded material, rubber expanded material.Supporting pad 103 of the present utility model acts primarily as supporting role, only
Want to make to be formed between thin film 102 and puigging 101 cavity.Preferably, in order to strengthen the mechanical property of whole composite plate,
Described supporting pad 103 can use fenestral fabric, described fenestral fabric can be commonly used in the art, described latticed knot
Size and size those skilled in the art of structure can select voluntarily, and this utility model is not specifically limited.Described supporting pad 103
Thickness be the thickness of cavity 104.
Described absorbent treatment 105 can use the macromolecule foaming resin of open-celled structure, and the polyurethane as commonly used in the art is sent out
Bubble resin material, tripolycyanamide foamed resin material etc..The acoustical cotton that macromolecule organic fiber is made can also be used, such as this
The PET+PP(polypropylene that field is conventional) double-component acoustical cotton.High frequency, by realizing discovery in a large number, is made an uproar by inventor according to material
Sound should have higher sound absorption characteristics, tripolycyanamide Foamex is preferably used or by macromolecule PP fiber and polyester fiber
One or both make acoustical cottons.
Preferably, the thickness of described puigging is 1-3mm, and the thickness of described cavity is 5-20mm, the thickness of described thin film
For 0.02mm-0.2mm, the thickness of described absorbent treatment is 5-60mm.Inventor is found by great many of experiments, when each component thickness all
When meeting above-mentioned scope, composite plate of the present utility model sound absorption soundproof effect is more preferable.
Composite plate of the present utility model can directly pass through integral heat pressure molding, is directly connected between the most each parts；Or
By adhesive bond cold moudling between each parts, being connected by tack coat between the most each parts, described binding agent is permissible
For acrylic adhesive.
Composite plate of the present utility model is composited by multilayer material, and during work, absorbent treatment 105 is near sound source,
Main absorption medium-high frequency noise.Puigging 101 and thin film 102 and cavity therebetween 104 constitute thin film cavity resonance system
System, mainly absorbs low frequency noise.Puigging 101 of the present utility model mainly has two effects, and one is to utilize to be formed thin with thin film
Film cavity resonance system, two is to play deadening.Composite plate of the present utility model may be implemented in multiple frequency range all to be had preferably
Sound absorption soundproof effect.
Below by way of specific embodiment, the beneficial effect of this utility model composite plate is described further.
Embodiment 1:
Take 20mm thickness melmac foaming acoustical cotton, test with the impedance tube of Beijing Sheng Wang Acoustic-Electric (BSWA) Technology Co., Ltd.
Its sound absorption qualities.
Embodiment 2:
Using puigging is EVA sheet thick for 2mm, and thin film is the PET film that 0.1mm is thick, and air layer thickness 5mm constitutes thin film
Cavity resonance Absorption System, then tests its sound absorption qualities with the impedance tube of Beijing Sheng Wang Acoustic-Electric (BSWA) Technology Co., Ltd..
Embodiment 3:
Selecting puigging is EVA sheet thick for 2mm, and air layer thickness 5mm, thin film is 0.1mmPET film, and absorbent treatment is 20mm
Melmac foaming acoustical cotton, uses 3M acrylic compounds Instant cement bonding, according to structure as shown in Figure 1 between layers
Make sample, then test its sound absorption qualities with the impedance tube of Beijing Sheng Wang Acoustic-Electric (BSWA) Technology Co., Ltd..
The test result of embodiment 1 to 3 is as shown in Figure 2.Embodiment 3 is a kind of detailed description of the invention of the present utility model,
As in figure 2 it is shown, the absorption coefficient curve of embodiment 3 is positioned on embodiment 1 and embodiment 2, and by embodiment 1 and embodiment 2
Absorption coefficient curve well combines.Composite plate of the present utility model, to high frequency sound absorbing capabilities unrestraint effect, improves
Sound absorbing capabilities in each frequency range.
In description of the present utility model, it is to be understood that term " axially ", " on ", D score, "front", "rear",
The orientation of the instruction such as "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward " or position relationship are for based on accompanying drawing institute
The orientation shown or position relationship, be for only for ease of description this utility model and simplify description rather than instruction or hint indication
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to this practicality
Novel restriction.In description of the present utility model, except as otherwise noted, " multiple " are meant that two or more.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace
Dress ", should be interpreted broadly " setting ", " connection ", for example, it may be fix connection, it is also possible to be to removably connect, or integratedly
Connect；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art,
Above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
The foregoing is only preferred embodiment of the present utility model, not in order to limit this utility model, all at this
Any amendment, equivalent and the improvement etc. made within the feature of utility model and principle, should be included in this utility model
Protection domain within.
Claims (13)
1. a composite plate, it is characterised in that including:
Puigging；
Thin film, described puigging is disposed on the side of described thin film；
Supporting pad, described supporting pad is arranged between described puigging and thin film, forms sky between described puigging and thin film
Chamber, described supporting pad is fenestral fabric；
Absorbent treatment, described absorbent treatment is arranged on the opposite side of described thin film.
Composite plate the most according to claim 1, it is characterised in that the thickness of described cavity is 5-20mm.
Composite plate the most according to claim 1, it is characterised in that described puigging is rubber slab or macromolecule resin plate.
Composite plate the most according to claim 2, it is characterised in that described puigging is EVA plate.
5. according to the composite plate described in claim 3 or 4, it is characterised in that the thickness of described puigging is 1-3mm.
Composite plate the most according to claim 1, it is characterised in that described thin film is PET film or PE film.
Composite plate the most according to claim 1, it is characterised in that described thin film is metal forming.
Composite plate the most according to claim 7, it is characterised in that described thin film is the one in aluminium foil or tinfoil paper.
9. according to the composite plate described in any one in claim 6 to 8, it is characterised in that the thickness of described thin film is
0.02mm-0.5 mm。
Composite plate the most according to claim 1, it is characterised in that described absorbent treatment is macromolecule foaming resin plate or suction
One in sound cotton plate.
11. composite plates according to claim 1, it is characterised in that the thickness of described absorbent treatment is 5mm-60mm.
12. composite plates according to claim 1, it is characterised in that described puigging, supporting pad, thin film and absorbent treatment
Between be directly connected to or connected by tack coat.
13. 1 kinds of automobiles, it is characterised in that described automobile includes in claim 1-4,6-8,10-12 described in any one
Composite plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620698722.3U CN205881450U (en) | 2016-07-05 | 2016-07-05 | Composite sheet and have its car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620698722.3U CN205881450U (en) | 2016-07-05 | 2016-07-05 | Composite sheet and have its car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205881450U true CN205881450U (en) | 2017-01-11 |
Family
ID=57694366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620698722.3U Active CN205881450U (en) | 2016-07-05 | 2016-07-05 | Composite sheet and have its car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205881450U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108248695A (en) * | 2018-01-30 | 2018-07-06 | 重庆千能实业有限公司 | A kind of front wall board of automobile assembly |
| CN110337688A (en) * | 2017-02-14 | 2019-10-15 | 富士胶片株式会社 | Noise reduction structure body |
| CN111923508A (en) * | 2020-07-31 | 2020-11-13 | 珠海格力绿色再生资源有限公司 | Soundproof cotton, preparation method thereof and compressor |
| CN114274521A (en) * | 2021-12-15 | 2022-04-05 | 东风汽车集团股份有限公司 | Processing method of sound absorption cotton, sound absorption cotton and wheel cover type sound absorption cotton |
-
2016
- 2016-07-05 CN CN201620698722.3U patent/CN205881450U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110337688A (en) * | 2017-02-14 | 2019-10-15 | 富士胶片株式会社 | Noise reduction structure body |
| US10847133B2 (en) | 2017-02-14 | 2020-11-24 | Fujifilm Corporation | Soundproof structure |
| CN110337688B (en) * | 2017-02-14 | 2021-03-30 | 富士胶片株式会社 | Sound-proof structure |
| CN108248695A (en) * | 2018-01-30 | 2018-07-06 | 重庆千能实业有限公司 | A kind of front wall board of automobile assembly |
| CN111923508A (en) * | 2020-07-31 | 2020-11-13 | 珠海格力绿色再生资源有限公司 | Soundproof cotton, preparation method thereof and compressor |
| CN114274521A (en) * | 2021-12-15 | 2022-04-05 | 东风汽车集团股份有限公司 | Processing method of sound absorption cotton, sound absorption cotton and wheel cover type sound absorption cotton |
| CN114274521B (en) * | 2021-12-15 | 2023-10-03 | 东风汽车集团股份有限公司 | Processing method of sound-absorbing cotton, sound-absorbing cotton and wheel cover type sound-absorbing cotton |
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| GR01 | Patent grant |