CN107599522A - A kind of composite porous automotive interior roof of high sound absorption qualities - Google Patents
A kind of composite porous automotive interior roof of high sound absorption qualities Download PDFInfo
- Publication number
- CN107599522A CN107599522A CN201710961001.6A CN201710961001A CN107599522A CN 107599522 A CN107599522 A CN 107599522A CN 201710961001 A CN201710961001 A CN 201710961001A CN 107599522 A CN107599522 A CN 107599522A
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- China
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- glued membrane
- punching
- sound absorption
- aperture
- glass mat
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Abstract
The invention discloses a kind of automotive interior roof with high sound absorption qualities, it is characterized in, by lower non-woven fabrics（8）, lower punching glued membrane（7）, lower glass mat（6）, polyurethane foam board（5）, upper glass mat（4）, upper punching glued membrane（3）, upper non-woven fabrics（2）, fabric（1）Bonding forms from bottom to top；The lower punching glued membrane（7）With upper punching glued membrane（3）There is circular protrusions aperture on surface（9）；Described circular protrusions aperture（9）30 60 μm of diameter, distribution density are 70,000 90000/square meter；Described circular protrusions aperture（9）Raised one is facing to glass mat；Ceiling is installed to in-car, effectively increases the sound absorption qualities of ceiling, reduces interior space noise, human pilot can be made more intuitively to experience the comfortableness of motor space in driving procedure.
Description
Technical field：
The present invention relates to technical field of automotive trim, the composite porous automotive trim of specifically a kind of high sound absorption qualities
Ceiling.
Background technology：
At present, existing automotive interior roof is by non-woven fabrics, glass mat, polyurethane foam board, glass mat, nonwoven
Cloth, fabric are bonded form in sequence, because ceiling area is big, have the function that important, vapour to the sound absorption qualities of internal car noise
The sound absorption qualities of in-car decorations ceiling directly determine the control effect of internal car noise.
Conventional ceiling with wet method, polyurethane sheet structure used is cellular semi-rigid foam plate, because density is low, percent opening
Height, longer wavelengths of sound wave is caused to cannot pass through the energy expenditure of polyurethane hole wall, and shortwave directly through polyurethane foam board
Long acoustic wave energy consumption is not complete, phenomena such as causing echo in driving cabin, reverberation.
The content of the invention：
The purpose of the present invention is to overcome the shortcomings of above-mentioned prior art, and provides a kind of high sound absorption qualities composite porous vapour
In-car decorations ceiling；Main existing automotive interior roof can not meet product to full frequency band（400-10000HZ）High sound absorption qualities
It is required that.
The technical scheme of invention is：A kind of composite porous automotive interior roof of high sound absorption qualities, its special character
Be, by lower non-woven fabrics, it is lower punching glued membrane, lower glass mat, polyurethane foam board, upper glass mat, it is upper punching glued membrane,
Upper non-woven fabrics, fabric are bonded form from bottom to top；The lower punching glued membrane and upper punching film surface have circular protrusions aperture；Institute
30-60 μm of the circular protrusions hole diameter stated, distribution density are 70000-90000/square meter；Described circular protrusions aperture is convex
One risen is facing to glass mat.
Further, described punching glued membrane is the polyolefin film of grammes per square metre 40-80g/ square meters.
The composite porous automotive interior roof of a kind of high sound absorption qualities of the present invention, if by punching on glued membrane
A dry circular protrusions aperture is combined with glass mat, polyurethane foam board, makes original completely unlimited polyurethane cellular list
Member is changed into open middle, the porose semienclosed cellular unit in both sides, when Acoustic Wave Propagation is to polyurethane foam board, sound wave from
Aperture enters polyurethane foam intralamellar part, and due to punching the stop of glued membrane, sound wave multiple reflections can be carried out in cellular unit
The energy expenditure of sound wave, and effectively reduce and be reflected back the long sound wave of driving cabin and short sound wave, greatly reduce in driving cabin
Noise.
Compared with the prior art a kind of composite porous automotive interior roof of high sound absorption qualities of the present invention has
There are prominent substantive distinguishing features and a marked improvement, 1, using punching glued membrane, keeping original polyurethane foam board open type honeycomb
While increase the semiclosed property in edge of polyurethane foam board, by punching glued membrane and glass mat, polyurethane foam board
With reference to the sound absorption qualities for improving ceiling, make ceiling that there are high sound absorption qualities；2nd, ceiling is installed to automotive interior, and driving cabin is made an uproar
Sound absorption improves a lot, hence it is evident that improves the comfortableness of environment inside car.
Brief description of the drawings：
Fig. 1 is the configuration schematic diagram of the present invention；
Fig. 2 is circular protrusions small structure schematic diagram on the punching glued membrane of the present invention；
Fig. 3 is that sound wave propagates diagram intention in polyurethane foam board.
Embodiment：
For a better understanding and implementation, providing specific embodiment below in conjunction with the accompanying drawings describes the present invention in detail；Illustrated embodiment
It is only used for explaining the present invention, is not intended to limit the scope of the present invention.
Embodiment 1, referring to Fig. 1,2, the polyolefin film of grammes per square metre 40-80g/ square meters is selected according to the design needs as punching glue
It is circular protrusions aperture greatly that film, i.e., upper punching glued membrane 3 and lower punching glued membrane 7, upper punching glued membrane 3 and lower punching glued membrane 7 surface, which have,
9,30-60 μm of 9 diameter of circular protrusions aperture, distribution density is 70000-90000/square meter；By lower non-woven fabrics 8, lower punching glue
Film 7, lower glass mat 6, polyurethane foam board 5, upper glass mat 4, upper punching glued membrane 3, upper non-woven fabrics 2, fabric 1 are under
And upper placement, circular protrusions aperture 9 is raised on lower punching glued membrane 7 one is facing to lower glass mat 6, on upper punching glued membrane 3
Circular protrusions aperture 9 it is raised one facing to upper glass mat 4；By molding, eight layer materials are bonded together, form this
A kind of composite porous automotive interior roof of high sound absorption qualities of invention.
A kind of composite porous automotive interior roof of high sound absorption qualities of the invention, it is circular convex in use referring to Fig. 3
Rise aperture it is raised one facing to glass mat, original open polyurethane cellular unit is changed into semiclosed property honeycomb list
Member, when sound wave passes to punching glued membrane, sound wave enters glass mat and polyurethane foam board by aperture, and sound wave is in polyurethane foam
Multiple reflections consumed energy is carried out in foam plate, and greatly reduces the acoustic wave energy for returning to driving cabin, so as to form high sound absorption properties
Energy.
Claims (2)
1. the composite porous automotive interior roof of a kind of high sound absorption qualities, it is characterised in that by lower non-woven fabrics（8）, lower beat
Hole glued membrane（7）, lower glass mat（6）, polyurethane foam board（5）, upper glass mat（4）, upper punching glued membrane（3）, upper nothing
Spin cloth（2）, fabric（1）Bonding forms from bottom to top；The lower punching glued membrane（7）With upper punching glued membrane（3）Surface has circular convex
Play aperture（9）；Described circular protrusions aperture（9）30-60 μm of diameter, distribution density are 70000-90000/square meter；It is described
Circular protrusions aperture（9）Raised one is facing to glass mat.
A kind of 2. composite porous automotive interior roof of high sound absorption qualities according to claim 1, it is characterised in that
Described punching glued membrane is the polyolefin film of grammes per square metre 40-80g/ square meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710961001.6A CN107599522A (en) | 2017-10-17 | 2017-10-17 | A kind of composite porous automotive interior roof of high sound absorption qualities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710961001.6A CN107599522A (en) | 2017-10-17 | 2017-10-17 | A kind of composite porous automotive interior roof of high sound absorption qualities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107599522A true CN107599522A (en) | 2018-01-19 |
Family
ID=61078409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710961001.6A Pending CN107599522A (en) | 2017-10-17 | 2017-10-17 | A kind of composite porous automotive interior roof of high sound absorption qualities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107599522A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109572087A (en) * | 2018-11-01 | 2019-04-05 | 江苏恩伟驰复合材料有限公司 | Special nonwoven fabric and preparation method thereof |
| CN109703482A (en) * | 2018-12-24 | 2019-05-03 | 芜湖尚唯汽车饰件有限公司 | A kind of trim panel of insulating noise |
| CN109823012A (en) * | 2018-12-29 | 2019-05-31 | 浙江华江科技股份有限公司 | Ultralight high sound-absorbing GMT enhancing PU Thermoplastic Automotive interior decorative composite board of one kind and preparation method thereof |
| CN114536879A (en) * | 2022-03-17 | 2022-05-27 | 无锡吉兴汽车声学部件科技有限公司 | Micro-nano colloidal fiber coagulation structure and processing method thereof |
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| CN102089801A (en) * | 2008-05-22 | 2011-06-08 | 3M创新有限公司 | Multilayer sound absorbing structure comprising mesh layer |
| CN103921504A (en) * | 2014-04-30 | 2014-07-16 | 天津博信汽车零部件有限公司 | Novel vehicle roof and production process thereof |
| CN205131136U (en) * | 2015-11-30 | 2016-04-06 | 重庆长鹏实业（集团）开封有限公司 | Automobile roof |
| CN205130511U (en) * | 2015-11-10 | 2016-04-06 | 宁波拓普集团股份有限公司 | Car gadget combined material |
| CN106926518A (en) * | 2017-03-16 | 2017-07-07 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation method thereof |
| CN207274003U (en) * | 2017-10-17 | 2018-04-27 | 烟台正海合泰科技股份有限公司 | A kind of composite porous automotive interior roof of high sound absorption qualities |
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2017
- 2017-10-17 CN CN201710961001.6A patent/CN107599522A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102089801A (en) * | 2008-05-22 | 2011-06-08 | 3M创新有限公司 | Multilayer sound absorbing structure comprising mesh layer |
| CN103921504A (en) * | 2014-04-30 | 2014-07-16 | 天津博信汽车零部件有限公司 | Novel vehicle roof and production process thereof |
| CN205130511U (en) * | 2015-11-10 | 2016-04-06 | 宁波拓普集团股份有限公司 | Car gadget combined material |
| CN205131136U (en) * | 2015-11-30 | 2016-04-06 | 重庆长鹏实业（集团）开封有限公司 | Automobile roof |
| CN106926518A (en) * | 2017-03-16 | 2017-07-07 | 天津市浩迪橡塑科技有限公司 | Cavity sound-absorbing material damping sheet and preparation method thereof |
| CN207274003U (en) * | 2017-10-17 | 2018-04-27 | 烟台正海合泰科技股份有限公司 | A kind of composite porous automotive interior roof of high sound absorption qualities |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109572087A (en) * | 2018-11-01 | 2019-04-05 | 江苏恩伟驰复合材料有限公司 | Special nonwoven fabric and preparation method thereof |
| CN109703482A (en) * | 2018-12-24 | 2019-05-03 | 芜湖尚唯汽车饰件有限公司 | A kind of trim panel of insulating noise |
| CN109823012A (en) * | 2018-12-29 | 2019-05-31 | 浙江华江科技股份有限公司 | Ultralight high sound-absorbing GMT enhancing PU Thermoplastic Automotive interior decorative composite board of one kind and preparation method thereof |
| CN114536879A (en) * | 2022-03-17 | 2022-05-27 | 无锡吉兴汽车声学部件科技有限公司 | Micro-nano colloidal fiber coagulation structure and processing method thereof |
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180119 |
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| RJ01 | Rejection of invention patent application after publication |