Multi-layer sound insulation pad for automobile and manufacture method thereof

A technology of multi-layer structure and manufacturing method, applied in the direction of chemical instruments and methods, lamination, lamination devices, etc., can solve the problems of high cost, heavy weight, complicated process, etc., and achieve the effect of strengthening the overall noise reduction and strengthening absorption

Inactive Publication Date: 2012-02-01
SHANGHAI XINAN CAR DEADENING FELT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) EPDM + sound insulation pad composite struct

Method used

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  • Multi-layer sound insulation pad for automobile and manufacture method thereof
  • Multi-layer sound insulation pad for automobile and manufacture method thereof
  • Multi-layer sound insulation pad for automobile and manufacture method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for manufacturing a sound-insulating pad for automobiles with a two-layer structure, the method comprising the following steps:

[0021] (1) Production of low-density sound-insulating materials: Mix 60kg of flower cloth, 30kg of composite polyester fiber and 10kg of sponge particles. After combing and netting, place it in an oven and control the temperature at 200°C for heat setting treatment for 4 minutes. , and then cut to obtain a density of 220kg / m 3 high-density sound insulation material;

[0022] (2) Production of high-density sound-insulating materials: Mix 70kg of polyester staple fibers and 30kg of composite polyester fibers. After combing and netting, place them in an oven, control the temperature at 160°C for 4 minutes, and then After cutting, the density is 70kg / m 3 Low-density sound insulation materials;

[0023] (3) Control the temperature of the oven at 200°C, place the low-density sound-insulating material and the high-density sound-insulatin...

Embodiment 2

[0025] A method for manufacturing a sound-insulating pad for automobiles with a three-layer structure, the method comprising the following steps:

[0026] (1) Production of low-density sound-insulating materials: Mix 60kg of flower cloth, 30kg of composite polyester fiber and 10kg of sponge particles. After combing and netting, place it in an oven and control the temperature at 200°C for heat setting treatment for 4 minutes. , and then cut to obtain a density of 220kg / m 3 high-density sound insulation material;

[0027] (2) Production of high-density sound-insulating materials: Mix 70kg of polyester staple fibers and 30kg of composite polyester fibers. After combing and netting, place them in an oven, control the temperature at 160°C for 4 minutes, and then After cutting, the density is 70kg / m 3 Low-density sound insulation materials;

[0028] (3) Control the temperature of the oven at 200°C, place the low-density sound-insulating material and the high-density sound-insulat...

Embodiment 3

[0030] A method for manufacturing a sound-insulating pad for automobiles with a two-layer structure, the method comprising the following steps:

[0031] (1) Production of low-density sound insulation materials: Mix 80kg of fabric, 20kg of composite polypropylene fiber and 5kg of sponge particles. After combing and netting, place it in an oven and control the temperature at 210°C for heat setting treatment for 2 minutes. , and then cut to obtain a density of 200kg / m 3 high-density sound insulation material;

[0032] (2) Production of high-density sound-insulating materials: Mix 80kg of polyester staple fiber and 20kg of composite polypropylene fiber. After combing and netting, place it in an oven, control the temperature at 190°C for heat setting treatment for 2 minutes, and then After cutting, the density is 150kg / m 3 Low-density sound insulation materials;

[0033] (3) Control the temperature of the oven at 220°C, place the low-density sound insulation material and the hig...

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Abstract

The invention relates to a multi-layer sound insulation pad for an automobile and a manufacture method thereof. The multi-layer sound insulation pad is composed of 2-3 layers of sound insulation pads with different densities. Various layers of sound insulation materials are bonded through a binder. The manufacture method comprises the following steps of: manufacturing a low-density sound insulation pad and a high-density sound insulation pad by using the conventional method, and heating to soften the sound insulation pads; then, coating the binder at the bonding position, and arranging the sound insulation materials in a forming mould in turn; and finally, closing the mould and pressing the sound insulation materials to obtain the multi-layer sound insulation pad for the automobile. Compared with the prior art, the multi-layer sound insulation pad has the absorption and attenuation functions on high-frequency and low-frequency noises; therefore, the integral noise reduction function is increased; and the high-density layer can also have the framework function.

Description

technical field [0001] The invention relates to a sound-insulating pad and a preparation method thereof, in particular to a multi-layer structure sound-insulating pad for automobiles and a manufacturing method thereof. Background technique [0002] At present, the dash panel in the passenger compartment of the automobile industry mainly includes two structures: (1) Most of the parts are made of a single-layer uniform thickness material. Since the outer side of the front wall is the engine compartment, the engine will generate a lot of noise when it is working, and the noise is divided into two parts: high frequency and low frequency; the sound insulation pad made of single-layer structure can significantly absorb high frequency noise , Attenuation, but can only partially absorb low-frequency noise. (2) EPDM+sound insulation mat composite structure: heavy weight, high cost, complex process. Contents of the invention [0003] The object of the present invention is to provi...

Claims

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Application Information

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IPC IPC(8): B32B7/12B32B5/14B60R13/08B32B37/00
Inventor 庄健
Owner SHANGHAI XINAN CAR DEADENING FELT
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