CN215435336U - Automobile front wall external sound-proof heat-insulation pad - Google Patents
Automobile front wall external sound-proof heat-insulation pad Download PDFInfo
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- CN215435336U CN215435336U CN202121810529.1U CN202121810529U CN215435336U CN 215435336 U CN215435336 U CN 215435336U CN 202121810529 U CN202121810529 U CN 202121810529U CN 215435336 U CN215435336 U CN 215435336U
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Abstract
The automobile front wall outer sound-insulation and heat-insulation pad comprises a non-woven fabric layer, a light PU layer, an EVA layer and a spunlace non-woven fabric layer which are sequentially connected, wherein the non-woven fabric layer is directly connected to the upper surface of the light PU layer, the upper surface of the EVA layer is directly connected to the lower surface of the light PU layer without an adhesive, and the spunlace non-woven fabric layer is directly connected to the lower surface of the EVA layer without an adhesive. The sound absorption and insulation board has good sound absorption and insulation performance, light weight, no harmful gas emission and good environmental protection.
Description
Technical Field
The utility model relates to an automotive interior trim part, in particular to an automotive front wall external sound and heat insulation pad.
Background
The automobile front wall outer sound and heat insulation pad is arranged in an automobile engine compartment, namely, the position back to the instrument panel surface of a driving cabin plays a role in heat insulation and sound insulation. Enclose structure that outer sound insulation and heat insulation pad was used always before current car is the structure of semi-solid felt plus non-woven fabrics, connects the structure of non-woven fabrics respectively on the both sides surface of semi-solid felt promptly, and it is with low costs to enclose outer sound insulation and heat insulation pad simple structure before this kind of car, and it has certain syllable-dividing effect, does not nevertheless inhale the sound nature basically, and whole sound insulation effect is not good enough. In addition, the existing automobile front wall outer sound-insulation and heat-insulation pad is large in product quality, is not in accordance with light-weight design requirements, is large in smell, can emit unpleasant harmful gas when being heated, and needs to be further improved in environmental protection.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide the automobile front wall outer sound-insulation and heat-insulation pad which is good in sound-absorption performance and sound-insulation performance, light in weight, free of harmful gas emission and good in environmental friendliness, and meets the requirement of light weight.
The technical scheme adopted by the utility model for realizing the purpose is as follows: enclose outer heat insulating mattress that gives sound insulation before car, including the non-woven fabrics layer, light PU layer, EVA layer, the water thorn non-woven fabrics layer that connect gradually, non-woven fabrics layer lug connection does not need binder lug connection at light PU layer upper surface, EVA layer upper surface to do not need binder lug connection at light PU layer lower surface, water thorn non-woven fabrics layer does not need binder lug connection at EVA layer lower surface.
The further technical scheme of the utility model is as follows: the thickness of the light PU layer is 25-30mm, and the thickness of the EVA layer and the thickness of the spunlace nonwoven fabric layer are 0.8-2 mm respectively.
The automobile front wall outer sound-insulation heat-insulation pad has the following beneficial effects: the structure that adopts non-woven fabrics layer, light PU layer, EVA layer, water thorn non-woven fabrics layer to constitute promotes by a wide margin, and sound absorbing performance also is better, and the whole quality of product is light, accords with the lightweight requirement, still can not send the harmful gas that has the bad smell, and the feature of environmental protection is good.
The sound and heat insulating pad for the front wall of the automobile according to the present invention will be further described with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic cross-sectional view of an automobile front wall outer sound and heat insulating mat according to the present invention;
the reference numbers illustrate: 1-non-woven fabric layer, 2-light PU layer, 3-EVA layer and 4-spunlace non-woven fabric layer.
Detailed Description
As shown in figure 1, the sound-insulating and heat-insulating pad for the automobile front wall comprises a non-woven fabric layer 1, a light PU layer 2, an EVA layer 3 and a spunlace non-woven fabric layer 4 which are sequentially connected. Non-woven fabrics layer 1 lug connection does not need the binder lug connection at light PU layer 2 upper surface on EVA layer 3 upper surface, and water thorn non-woven fabrics layer 4 does not need the binder lug connection at 3 lower surfaces on EVA layer 2 lower surfaces on light PU layer. The non-woven fabric layer 1 adopts 120 g/m2The non-woven fabric is characterized in that the inner side surface of the non-woven fabric is connected with environment-friendly glue which is connected with the non-woven fabric into a whole, namely the non-woven fabric is the non-woven fabric with the environment-friendly glue attached to the inner layer. The light PU layer 2 adopts 18 g/m2The light PU and EVA layer 3 adopts 1500 g/m2EVA, water-jet non-woven fabric layer 4 is 80 g/m2A spunlace nonwoven fabric. Wherein the thickness of the light PU layer 2 is 25-30mm, and the thickness of the EVA layer 3 and the thickness of the spunlace nonwoven fabric layer 4 are 0.8-2 mm respectively. In this embodiment, the thickness of the light-weight PU layer 2 is 28 mm. The thickness of the EVA layer 3 and the spunlace nonwoven fabric layer 4 is 1 mm. Of course, as a variation of the utility model, the thicknesses of the light PU layer 2, the EVA layer 3 and the spunlace nonwoven fabric layer 4 can also be selected according to the requirements of the model and the engine model of the automobile, and the automobile front wall outer sound-insulation and heat-insulation pad with other parameters in the scope of the utility model can also be selected.
During production, the non-woven fabric layer 1, the light PU layer 2, the EVA layer 3 and the spunlace non-woven fabric layer 4 are sequentially stacked together, and are subjected to one-time extrusion forming after heating, the environment-friendly glue on the inner layer of the non-woven fabric layer 1, the upper surface and the lower surface of the light PU layer 2 and the upper surface and the lower surface of the EVA layer 3 are softened in the heating process, and the whole sound and heat insulation cushion product is formed after extrusion by a die. The production efficiency can be effectively improved without spraying glue on the surface of the material after adopting the structure, and tests prove that the production efficiency is greatly improved after adopting the structure, 4 minutes per mold are needed for production by adopting the structure in the prior art, 1.5-2 minutes per mold are needed for production by adopting the structure in the utility model, and the energy consumption is effectively reduced.
The above embodiments are only preferred embodiments of the present invention, and the structure of the present invention is not limited to the forms of the above embodiments, and any modifications, equivalents and the like within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. Enclose outer heat insulating mattress that gives sound insulation before car, its characterized in that, including non-woven fabrics layer (1), light PU layer (2), EVA layer (3), water thorn non-woven fabrics layer (4) that connect gradually, non-woven fabrics layer (1) lug connection is on light PU layer (2), EVA layer (3) upper surface does not need binder lug connection at light PU layer (2) lower surface, water thorn non-woven fabrics layer (4) do not need binder lug connection at EVA layer (3) lower surface.
2. The automobile front wall external sound and heat insulating pad as claimed in claim 1, wherein the thickness of the light PU layer (2) is 25-30mm, and the thickness of the EVA layer (3) and the thickness of the spunlace nonwoven fabric layer (4) are 0.8-2 mm, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121810529.1U CN215435336U (en) | 2021-08-04 | 2021-08-04 | Automobile front wall external sound-proof heat-insulation pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121810529.1U CN215435336U (en) | 2021-08-04 | 2021-08-04 | Automobile front wall external sound-proof heat-insulation pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215435336U true CN215435336U (en) | 2022-01-07 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121810529.1U Active CN215435336U (en) | 2021-08-04 | 2021-08-04 | Automobile front wall external sound-proof heat-insulation pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215435336U (en) |
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2021
- 2021-08-04 CN CN202121810529.1U patent/CN215435336U/en active Active
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