CN1727631A - Noise isolation sheet - Google Patents

Noise isolation sheet Download PDF

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Publication number
CN1727631A
CN1727631A CNA2005100809055A CN200510080905A CN1727631A CN 1727631 A CN1727631 A CN 1727631A CN A2005100809055 A CNA2005100809055 A CN A2005100809055A CN 200510080905 A CN200510080905 A CN 200510080905A CN 1727631 A CN1727631 A CN 1727631A
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CN
China
Prior art keywords
sound
layer
insulating panel
sound insulating
absorbing material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CNA2005100809055A
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Chinese (zh)
Inventor
小原义弘
须崎康义
江盛真一郎
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SAIKAWA RUBBER INDUSTRIES Ltd
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SAIKAWA RUBBER INDUSTRIES Ltd
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Publication of CN1727631A publication Critical patent/CN1727631A/en
Pending legal-status Critical Current

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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
    • B32B5/245—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 being a foam layer
    • 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
    • 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
    • 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
    • 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
    • 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
    • B32B5/32—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 at least two layers being foamed and next to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
    • B60R13/08—Insulating elements, e.g. for sound insulation
    • B60R13/0815—Acoustic or thermal insulation of passenger compartments
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/06—Open cell foam
    • 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
    • B32B2266/00—Composition of foam
    • B32B2266/08—Closed cell foam
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/02—Cellular or porous
    • B32B2305/022—Foam
    • 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
    • B32B2305/00—Condition, form or state of the layers or laminate
    • B32B2305/10—Fibres of continuous length
    • B32B2305/20—Fibres of continuous length in the form of a non-woven mat
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/10—Properties of the layers or laminate having particular acoustical properties
    • B32B2307/102—Insulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Abstract

There is provided a noise isolation sheet 10 which is comprised of an optional number of closed-cell foamed layer 11, open-cell foamed layer 12 and fibered noise absorbing material 13, being laminated in an optional order, and which insulates the noise near 1000 Hz. Further, there is provided a noise isolation sheet 10 comprised of an optional number of the closed-cell foamed layer 11 and the fibered noise absorbing material 13 being laminated in an optional order. There is also provided a noise isolation sheet 10 comprised of an optional number of the open-cell foamed layer 12 and the fibered noise absorbing material 13 being laminated in an optional order. Each noise isolation sheet 10 is used to partially or fully cover an interior side of a door inner panel of a vehicle.

Description

Sound insulating panel
Technical field
The present invention relates to a kind of sound insulating panel, it is used as the plate of the private side of the door that for example is installed in vehicle.
Background technology
Usually use various sound arresters in the inboard of the door of vehicle, be intended to stop external noise to invade vehicle inside and stop internal noise to leak into outside vehicle.For example, invented a kind of like this device, wherein felted terxture or urethane are attached to the back side that interior door is decorated (interior door trim), and described interior door is decorated the inboard that is installed in an inner panel, and the product of wherein urethane being made is attached on the inner panel of door.
Consider above-mentioned prior art, applicant of the present invention has invented a kind of sound insulating panel and has applied for patent (the open No.2004-020415 of Japan Patent), in order to improve the sound insulation value of conventional sound arrester.As shown in figure 15, this sound insulating panel comprises foams (layer of closed-cell foam 11), and it has the numerous blind bore 11a that is inserted in wherein, and another foams (open celled foam layer 12), and it has the hole 12a that opens wide that is inserted in wherein.
In addition, invent a kind of sound absorption material, be used for absorbing the noise (for example seeing open No.8-146967 of Japanese unexamined patent publication No. and the open No.2503215 of Japan Patent) that produces by the air-breathing of explosive motor.
But, though the sound insulation value of the sound insulating panel of asking among the applicant of the present invention is better than comprising the sound insulation value of the prior art of felted terxture or urethane, and as shown in figure 16, it is approximately 3000Hz's or higher noise sound insulation value and sound absorption qualities for frequency also is good, but for the noise of about 1000Hz, its sound insulation value and sound absorption qualities are still needed and are further improved.In Figure 16, " (1) NI plate " is the applicant of the present invention sound insulating panel of application in the past.In addition, " (2) Thinsulate " is the title by the product of SUMITOMO 3M Ltd manufacturing, " (3) sheet felted terxture " is urethane sheet felted terxture, and " (4) oil felted terxture " is the resin felted terxture, and all these is that proportion is approximately 0.02 fibrous damping material.In addition, " (5) flexible urethane " are a kind of sponge foamed materials, and are a kind of by extending the foams of the flexibility that the material that mainly is made of polyalcohol and PIC forms.It has about 0.02 proportion.Should be noted that in each corresponding round parentheses " t " represents thickness (mm).
In addition, the damping material that discloses in not careful patent disclosure No.8-146967 can only absorb the noise in the 100Hz-300Hz scope effectively, can not absorb the noise of about 1000Hz satisfactorily.The damping material that discloses in the open No.2503215 of Japan Patent can not absorb the noise of about 1000Hz satisfactorily.
Summary of the invention
Therefore, the object of the present invention is to provide a kind of sound insulating panel, it also can isolate the noise of about 1000Hz completely effectively.
In order to address the above problem, sound insulating panel according to a first aspect of the present invention is characterised in that, it comprises the layer of closed-cell foam (11) of optional quantity, open celled foam layer (12) and sound-absorbing material fiber (13), wherein layer of closed-cell foam (11), open celled foam layer (12) and sound-absorbing material fiber (13) are laminated in together with optional order.
Layer of closed-cell foam (11) is a kind of foams, wherein is formed with numerous blind bore (11a) (seeing Figure 15) dispersedly.Perforated layer (12) is a kind of foams, wherein is formed with unlimited hole (12a) dispersedly, and wherein each hole (12a) of opening wide is formed like this, makes itself and adjacent blind bore (11a) communicate with each other (seeing Figure 15).Open celled foam layer (12) comprises half-open hole froth bed (not shown), and it is included in the blind bore (11a) that wherein forms dispersedly and the hole (12a) of opening wide.
Sound insulating panel (10) according to a second aspect of the present invention is characterised in that, it comprises the layer of closed-cell foam (11) and the sound-absorbing material fiber (13) of optional quantity, and wherein said layer of closed-cell foam (11) and sound-absorbing material fiber (13) are laminated in together with optional order.
Sound insulating panel (10) according to third aspect present invention is characterised in that, it comprises the open celled foam layer (12) and the sound-absorbing material fiber (13) of optional quantity, and wherein said open celled foam layer (12) and described sound-absorbing material fiber (13) are laminated in together with optional order.
Sound insulating panel (10) according to fourth aspect present invention is characterised in that, it is used to cover partly or fully the private side of the door inner panel (1) of vehicle, comprise layer of closed-cell foam (11), open celled foam layer (12) and the sound-absorbing material fiber (13) of optional quantity, wherein said layer of closed-cell foam (11), open celled foam layer (12) and sound-absorbing material fiber (13) are laminated in together with optional order.
Sound insulating panel (10) according to fifth aspect present invention is characterised in that, it is used to cover partly or fully the private side of the door inner panel (1) of vehicle, comprise the layer of closed-cell foam (11) and the sound-absorbing material fiber (13) of optional quantity, wherein said layer of closed-cell foam (11) and sound-absorbing material fiber (13) are laminated in together with optional order.
Sound insulating panel according to sixth aspect present invention is characterised in that, it is used to cover partly or fully the private side of the door inner panel (1) of vehicle, comprise the open celled foam layer (12) and the sound-absorbing material fiber (13) of optional quantity, wherein said open celled foam layer (12) and sound-absorbing material fiber (13) are laminated in together with optional order.
Sound insulating panel (10) according to seventh aspect present invention is characterised in that, aspect the of the present invention the 4th or the 5th in, the layer that is positioned at vehicle outermost side is described layer of closed-cell foam (11).
Sound insulating panel (10) according to eighth aspect present invention is characterised in that in a sixth aspect of the present invention, the layer that is positioned at vehicle outermost side is a described open celled foam layer (12).
Sound insulating panel (10) according to ninth aspect present invention is characterised in that in any one claim, described sound-absorbing material fiber (13) is urethane sheet felted terxture or resin felted terxture in front.
Corresponding element or material that numeral in each round parentheses discloses in the preferred embodiments of the present invention of explanation in the accompanying drawings and in the back.For with prior art in the similar part that discloses identical numeral is provided.
Sound insulating panel according to a first aspect of the present invention, remove outside layer of closed-cell foam and the open celled foam layer, also be laminated with sound-absorbing material fiber, therefore as shown in figure 14, by means of the performance of sound-absorbing material fiber, also can obtain big sound insulation value for the noise of about 1000Hz.
Curve shown in Figure 14 has disclosed the numerical value (TL[db]) of the sound transmission loss that obtains by means of experiment test, and described experiment test is by utilizing 4 dissimilar sound insulating panels to carry out.According to this test result, has the most effective sound insulation value according to the sound insulating panel that constitutes by layer of closed-cell foam, open celled foam layer and sound-absorbing material fiber of the present invention (being represented as " (3) NI plate+Thinsulate " in the drawings) for the noise of about 1000Hz as can be seen.
In addition, according to another kind of sound insulating panel of the present invention (it is represented as " (4) NI plate+Thinsulate+NI plate "), it is made of two NI plates and sound-absorbing material fiber, and wherein each NI plate is made of layer of closed-cell foam and open celled foam layer, inferior to above-mentioned plate.In addition, the conventional plate (" (1) NI plate ") that is made of layer of closed-cell foam and open celled foam layer is more inferior, and the back is the plate (" (2) Thinsulate (1) ") that only is made of sound-absorbing material fiber again.Should be noted that it is made of two NI plates and sound-absorbing material fiber according to sound insulating panel of the present invention " (4) ", is being the most effective aspect the sound insulation value of the noise in 1000Hz and the Geng Gao scope.
In addition, layer of closed-cell foam also is very effective aspect water resistance, and the open celled foam layer is very effective aspect sound insulation value.
Sound insulating panel according to a second aspect of the present invention, it is made of layer of closed-cell foam and sound-absorbing material fiber, described sound-absorbing material fiber is laminated on the described layer of closed-cell foam, utilizes the performance of sound-absorbing material fiber, makes that this sound insulating panel is being very effective aspect the noise of isolating about 1000Hz.In addition, utilize the performance of layer of closed-cell foam, make that this sound insulating panel also is very effective aspect water resistance.
According to the sound insulating panel of a third aspect of the present invention, sound-absorbing material fiber is laminated on the open celled foam layer, makes that it also is being very effective aspect noise of isolating about 1000Hz.In addition, utilize the performance of open celled foam layer, this sound insulating panel proves to have higher performance aspect noise isolation.
According to the sound insulating panel of a fourth aspect of the present invention, except layer of closed-cell foam and open celled foam layer, also be laminated with sound-absorbing material fiber, make that it is being very effective aspect noise of isolating about 1000Hz.Therefore, cover the private side of the door inner panel of vehicle, can stop external noise to invade vehicle inside effectively, stop internal noise to leak into the outside of vehicle simultaneously by utilizing this sound insulating panel.
According to the sound insulating panel of a fifth aspect of the present invention, layer of closed-cell foam and sound-absorbing material fiber are laminated in together, make that it is being very effective aspect noise of isolating about 1000Hz.And improved the sound insulation value of vehicle inside.In addition, by means of the performance of layer of closed-cell foam, the water resistance of the door of vehicle is improved.
According to the sound insulating panel of a sixth aspect of the present invention, open celled foam layer and sound-absorbing material fiber are laminated in together, make that it also is being very effective aspect noise of isolating about 1000Hz, and it can improve the sound insulation value of vehicle interior.In addition, in performance strong aspect the noise isolation, it can show higher sound insulation value by means of the open celled foam layer.
According to the sound insulating panel of a seventh aspect of the present invention, be layer of closed-cell foam in aspect the of the present invention the 4th or the 5th at the layer of the outermost setting of vehicle, make very effectively water resistance by means of layer of closed-cell foam, can improve the water resistance of the door of vehicle.
According to the sound insulating panel of a eighth aspect of the present invention, the layer in the outermost setting of vehicle in a sixth aspect of the present invention is the open celled foam layer, makes performance by means of the very effective isolation noise of open celled foam layer, improves the sound insulation value of the door of vehicle.
According to the sound insulating panel of a ninth aspect of the present invention, in the invention of any one front, sound-absorbing material fiber is urethane sheet felted terxture or resin felted terxture, makes it present very effectively sound insulation value, and it is economical to make that it becomes.
Description of drawings
Fig. 1 is the phantom drawing of taking apart, and expression is according to the sound insulating panel 10 of the preferred embodiments of the present invention, and it is installed on the door of vehicle;
Fig. 2 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to the sound insulating panel of first preferred embodiment of the present invention;
Fig. 3 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to another aspect of the sound insulating panel of first preferred embodiment of the present invention;
Fig. 4 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to another aspect of the sound insulating panel of first preferred embodiment of the present invention;
Fig. 5 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to another aspect of the sound insulating panel of first preferred embodiment of the present invention;
Fig. 6 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to another aspect of the sound insulating panel of first preferred embodiment of the present invention;
Fig. 7 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to the sound insulating panel of second preferred embodiment of the present invention;
Fig. 8 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to the another kind of sound insulating panel of second preferred embodiment of the present invention;
Fig. 9 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to the sound insulating panel of the 3rd preferred embodiment of the present invention;
Figure 10 is the sectional view that the line I-I along Fig. 1 gets, and expression is according to the another kind of sound insulating panel of the 3rd preferred embodiment of the present invention;
Figure 11 is the table of expression according to the experiment test result of the entrant sound of the sound insulating panel of the preferred embodiments of the present invention;
Figure 12 is the table of expression according to the experiment test result of the sound transmission loss of the sound insulating panel of the preferred embodiments of the present invention;
Figure 13 is the curve of expression according to the experiment test result of the sound transmission loss of the sound insulating panel of the preferred embodiments of the present invention;
Figure 14 is expression another curve according to the experiment test result of the sound transmission loss of the sound insulating panel of the preferred embodiments of the present invention;
Figure 15 is the sectional view of expression applicant of the present invention at the sound insulating panel of first to file; And
Figure 16 is the curve of the sound absorption coefficient of the sound insulating panel of expression applicant of the present invention application in the past and the sound insulating panel made by other material.
The specific embodiment
Below with reference to the sound insulating panel 10 of Fig. 1-6 explanation according to first preferred embodiment of the present invention.Fig. 1 is the phantom drawing of a decomposition, and expression is in the sound insulating panel 10 of installment state.Each figure of Fig. 2-Fig. 6 is the sectional view of the expression sound insulating panel 10 got of the line I-I along Fig. 1.
Each of these sound insulating panels 10 is installed in the door inner panel 1 and the interior door of vehicle and decorates between 2, completely or partially covers the private side of door inner panel 1.Sound insulating panel 10 is made up of layer of closed-cell foam 11, open celled foam layer 12 and sound-absorbing material fiber 13.
Layer of closed-cell foam 11 and open celled foam layer 12 can be made by synthetic rubber, EPDM for example, and CR, SBR and NBR, in this preferred embodiment, they are made by EPDM, and reason is that its proportion is controlled easily.Sound-absorbing material fiber 13 is made by Thinsulate (ProductName), urethane sheet felted terxture (urethane chip felt) or resin felted terxture.These materials do not have too many difference aspect sound insulation value.
In all sound insulating panels 10, layer of closed-cell foam 11 is set at the outermost of vehicle doorn, so that improve the water resistance of door by means of the very effectively water resistance of layer of closed-cell foam 11, rainwater that stops vehicle outside and so on is invaded vehicle inside.In addition, by open celled foam layer 12 and sound-absorbing material fiber 13 are arranged on the vehicle inside side, utilize the performance of layer 12 and material 13, the two all has very effectively sound insulation value, can improve the sound insulation value of sound insulating panel 10 for the noise of about 1000Hz.
As shown in Figures 2 and 3, sound insulating panel 10 according to the preferred embodiments of the present invention can be made of individual layer layer of closed-cell foam 11, open celled foam layer 12 and sound-absorbing material fiber 13, perhaps shown in Fig. 4-6, it can be made of the layer of closed-cell foam 11 and the open celled foam layer 12 (or sound-absorbing material fiber 13) of two-layer (or more than two-layer).In addition, the position of layer 11,12 and material 13 can selectively be provided with as required.
Referring to Fig. 1,7 and 8 explanations are according to the sound insulating panel of second preferred embodiment of the invention.Each of Fig. 7 and Fig. 8 is the sectional view of the expression sound insulating panel 10 got of the line I-I along Fig. 1.
Each of these sound insulating panels 10 also is installed in the private side of the door inner panel 1 of vehicle, and is made of one deck or which floor layer of closed-cell foam 11 and sound-absorbing material fiber 13.Sound insulating panel 10 shown in Figure 7 is made of individual layer layer of closed-cell foam 11 and sound-absorbing material fiber 13, and sound insulating panel 10 shown in Figure 8 is made of two-layer layer of closed-cell foam 11, improves water resistance and sound insulation value thus.Two-layer above sound-absorbing material fiber 13 can be provided.
With reference to Fig. 1,9 and 10 explanations are according to the sound insulating panel 10 of third preferred embodiment of the invention.Fig. 9 and 10 each be the sectional view of the expression sound insulating panel 10 got of the line I-I along Fig. 1.
This sound insulating panel 10 also is installed in the private side of the door inner panel of vehicle, and is made of one deck or which floor open celled foam layer 12 and sound-absorbing material fiber 13.The two all has very effectively sound insulation value open celled foam layer 12 and sound-absorbing material fiber 13, so sound insulating panel 10 comprises that for isolation the noise of any frequency of the frequency of about 1000Hz all is very effective.The quantity of open celled foam layer 12 and sound-absorbing material fiber 13 and position are without limits.
The present inventor and colleague thereof have carried out experiment test, so that seek the soundproof effect according to the sound insulating panel 10 of the preferred embodiments of the present invention, and the sound insulating panel of itself and other are compared.
Table shown in Figure 11 is represented the sound that sound that the sound insulating panel 10 according to the preferred embodiments of the present invention sees through and other sound insulating panel see through.In this table, " NI plate " as previously mentioned, is that a kind of wherein layer of closed-cell foam 11 and open celled foam layer 12 are laminated in plate together.As shown in showing at this, (it is represented as " NI plate+Thinsulate " according to the sound insulating panel 10 of the preferred embodiments of the present invention, " NI plate+felted terxture ", " NI plate+Thinsulate+NI plate " and " NI plate+felted terxture+NI plate "), approximately the numerical value that sees through of the sound of 1000Hz is quite low.Be appreciated that by this result it is very effective comparing with conventional sound insulating panel according to the sound insulating panel 10 of the preferred embodiments of the present invention.
Table shown in Figure 12 is represented the sound transmission loss according to the sound transmission loss of the sound insulating panel 10 of the preferred embodiment of the present invention and other plate.Figure 13 is the curve according to numerical value preparation shown in Figure 12.Curve shown in Figure 14 as previously mentioned, also is (should be noted that " NI plate (1), and the numerical value of " Thinsulate (1) " has been removed from the table of Figure 12) according to numerical value shown in Figure 12 preparation.
Be appreciated that by above-mentioned table and curve, sound insulating panel 10 " (3) NI plate+Thinsulate " according to the preferred embodiments of the present invention,) be the highest a little less than the sound transmission loss in the scope of 1000Hz, to compare with conventional plate, its sound insulation value is very effective.It should be noted that, the sound insulation value of other sound insulating panel (" (5) NI plate+Thinsulate+NI plate " and " (6) NI plate+felted terxture+NI plate ") in the 1000Hz scope according to other preferred embodiment of the present invention also is very effective, also is being higher a little less than the sound insulation value in the scope of 1000Hz.
In the above-described embodiment, though sound insulating panel has been described being installed under the situation of vehicle doorn, the invention is not restricted to this use, the present invention can be used for other vehicle, for example train and aircraft and building and so on.

Claims (9)

1. a sound insulating panel is characterized in that, described sound insulating panel comprises layer of closed-cell foam, open celled foam layer and the sound-absorbing material fiber of optional quantity,
Wherein said layer of closed-cell foam, open celled foam layer and sound-absorbing material fiber are laminated in together with optional order.
2. a sound insulating panel is characterized in that, described sound insulating panel comprises the layer of closed-cell foam and the sound-absorbing material fiber of optional quantity,
Wherein said layer of closed-cell foam and sound-absorbing material fiber are laminated in together with optional order.
3. a sound insulating panel is characterized in that, described sound insulating panel comprises the open celled foam layer and the sound-absorbing material fiber of optional quantity,
Wherein said open celled foam layer and described sound-absorbing material fiber are laminated in together with optional order.
4. a sound insulating panel is characterized in that, described sound insulating panel is used to cover partly or fully the private side of the door inner panel of vehicle, comprises layer of closed-cell foam, open celled foam layer and the sound-absorbing material fiber of optional quantity,
Wherein said layer of closed-cell foam, open celled foam layer and sound-absorbing material fiber are laminated in together with optional order.
5. a sound insulating panel is characterized in that, described sound insulating panel is used to cover partly or fully the private side of the door inner panel of vehicle, comprises the layer of closed-cell foam and the sound-absorbing material fiber of optional quantity,
Wherein said layer of closed-cell foam and sound-absorbing material fiber are laminated in together with optional order.
6. a sound insulating panel is characterized in that, described sound insulating panel is used to cover partly or fully the private side of the door inner panel of vehicle, comprises the open celled foam layer and the sound-absorbing material fiber of optional quantity,
Wherein said open celled foam layer and sound-absorbing material fiber are laminated in together with optional order.
7. as claim 4 or 5 described sound insulating panels, it is characterized in that the outermost layer that is positioned at vehicle is described layer of closed-cell foam.
8. sound insulating panel as claimed in claim 6 is characterized in that, the outermost layer that is positioned at vehicle is described open celled foam layer.
9. as the described sound insulating panel of any one claim of front, it is characterized in that described sound-absorbing material fiber is urethane sheet felted terxture or resin felted terxture.
CNA2005100809055A 2004-07-29 2005-06-28 Noise isolation sheet Pending CN1727631A (en)

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GB2416737B (en) 2009-03-11
US20060021823A1 (en) 2006-02-02
GB2416737A (en) 2006-02-08
GB0515412D0 (en) 2005-08-31

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