IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0565497
(2012-08-02)
|
등록번호 |
US-8636105
(2014-01-28)
|
우선권정보 |
EP-1015903 (2010-03-09); EP-1015905 (2010-03-09) |
발명자
/ 주소 |
- Castagnetti, Claudio
- Bertolini, Claudio
|
출원인 / 주소 |
|
대리인 / 주소 |
Finnegan, Henderson, Farabow, Garrett & Dunner, LLP
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
15 |
초록
▼
A sound insulating trim part with acoustic mass-spring characteristics is provided. The sound insulating trim part includes a mass layer and a decoupling layer. The mass layer includes a porous fibrous layer with a dynamic Young's modulus E of at least about 96·AW·t (Pa), with AW being an area weigh
A sound insulating trim part with acoustic mass-spring characteristics is provided. The sound insulating trim part includes a mass layer and a decoupling layer. The mass layer includes a porous fibrous layer with a dynamic Young's modulus E of at least about 96·AW·t (Pa), with AW being an area weight (g/m2), and t being a thickness (mm) of the porous fibrous layer. The mass layer also includes an air impervious thin barrier layer. The barrier layer is disposed between the porous fibrous layer and the decoupling layer. The barrier layer, the porous fibrous layer, and the decoupling layers are laminated together.
대표청구항
▼
1. A sound insulating part for a vehicle, comprising: a mass layer including: a porous fibrous layer formed of a material having a dynamic Young's modulus, wherein the dynamic Young's modulus for the material of the porous fibrous layer has a value of at least about 96 AW t (Pa), with AW being an ar
1. A sound insulating part for a vehicle, comprising: a mass layer including: a porous fibrous layer formed of a material having a dynamic Young's modulus, wherein the dynamic Young's modulus for the material of the porous fibrous layer has a value of at least about 96 AW t (Pa), with AW being an area weight (g/m2), and t being a thickness (mm) of the porous fibrous layer; anda barrier layer that is substantially air impervious and thinner than the porous fibrous layer; anda decoupling layer adjacent to the mass layer, the decoupling layer comprised of a solid phase material,wherein the barrier layer is disposed between the porous fibrous layer and the decoupling layer, andwherein the barrier layer, the porous fibrous layer, and the decoupling layer are laminated together. 2. The sound insulating part of claim 1, wherein the thickness t of the porous fibrous layer is between about 1 and about 10 (mm). 3. The sound insulating part of claim 2, wherein the thickness t of the porous fibrous layer is less than about 6 (mm). 4. The sound insulating part of claim 1, wherein the area weight AW of the porous fibrous layer is between about 500 and about 2000 (g/m2). 5. The sound insulating part of claim 1, wherein the thickness t of the porous fibrous layer is between about 1 and about 10 (mm). 6. The sound insulating part of claim 1, wherein the barrier layer has a thickness of at least about 40 (μm). 7. The sound insulating part of claim 1, wherein the barrier layer is composed of a thermoplastic material that deforms upon application of heat. 8. The sound insulating part of claim 1, wherein an additional absorbing layer is disposed on at least a part of the porous fibrous layer. 9. The sound insulating part of claim 1, wherein the decoupling layer has a compression stiffness of less than about 100 (kPa). 10. A sound-insulating trim part with acoustic mass-spring characteristics, comprising: a mass layer including: a porous fibrous layer that is formed of a binding material that may be heat activated and that has a dynamic Young's modulus, wherein the dynamic Young's modulus of the porous fibrous layer has a value of at least about 96-AW t (Pa), with AW being an area weight (g/m2), and t being a thickness (mm) of the porous fibrous layer; anda barrier layer that is substantially air impervious; anda decoupling layer adjacent the mass layer, the decoupling layer comprised of a solid-phase material,wherein the barrier layer is disposed between the porous fibrous layer and the decoupling layer, andwherein the barrier layer, the porous fibrous layer, and the decoupling layers are laminated together with the aid of the binding material in the porous fibrous layer. 11. The sound insulating trim part of claim 10, wherein the area weight AW of the porous fibrous layer is between about 500 and about 2000 (g/m2). 12. The sound insulating trim part of claim 10, wherein the thickness t of the porous fibrous layer is between about 1 and about 10 (mm). 13. The sound insulating trim part of claim 10, wherein the barrier layer has a thickness of at least about 40 (μm). 14. The sound insulating trim part of claim 13, wherein the barrier layer has a thickness of about 40 to about 200 (μm). 15. The sound insulating trim part of claim 10, wherein an absorbing layer is disposed on at least a part of the porous fibrous layer. 16. The sound insulating trim part of claim 10, wherein the decoupling layer has a compression stiffness of less than about 100 (kPa). 17. The sound insulating trim part of claim 10, wherein the decoupling layer is porous or open pored. 18. A sound-insulating trim part, comprising: a mass layer including: a porous fibrous layer formed of a material having a dynamic Young's modulus E, wherein the dynamic Young's modulus for the material of the porous fibrous layer has a value of at least about 96-AW-t (Pa), with AW being an area weight (g/m2), and t being a thickness (mm) of the porous fibrous layer; anda barrier layer that is substantially air impervious and thinner than the porous fibrous layer; anda decoupling layer adjacent to the mass layer, the decoupling layer comprised of a solid-phase material,wherein the mass layer and the decoupling layer form an acoustic mass-spring system. 19. The sound insulating trim part of claim 18, wherein the mass layer and the decoupling layer are laminated together with the barrier layer disposed between the decoupling layer and the porous fibrous layer, andwherein the sound insulating trim part further comprises: a sound absorbing layer provided on a surface of the porous fibrous layer; anda scrim layer provided on a surface of the porous fibrous layer.
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