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Automobile front wall inner sound insulation pad and preparation method and application thereof

A technology for sound insulation pads and automobiles, which is applied in chemical instruments and methods, vehicle parts, transportation and packaging, etc., can solve the problems of poor sound insulation effect, single structure of front wall sound insulation pads, degumming, etc., and achieve the effect of improving sound insulation performance.

Pending Publication Date: 2020-11-10
WUXI GISSING AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using PE film as an adhesive may cause problems such as poor adhesion and degumming
[0006] The noise generated during the driving of the car seriously affects people's driving experience, and the current car front wall sound insulation pad has a single structure and poor sound insulation effect, which cannot meet people's needs

Method used

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  • Automobile front wall inner sound insulation pad and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] This embodiment provides a sound-insulating pad in the front wall of an automobile, which includes a sound-insulating cotton layer, a heavy coating layer, a foot pad and a PU foam layer that are stacked in sequence, wherein the material of the sound-insulating cotton layer is thermoplastic back-spun cotton, and the heavy-duty The coating material is EPDM, and the foot pads are EPP foot pads. The parameters of each layer are as follows:

[0105] composition parameter Thermoplastic back spun cotton layer Thickness 13mm EPDM layer Thickness 1.3mm EPP foot pad Thickness 13cm; Density 27kg / m 3

PU foam layer Thickness 17cm

[0106] The preparation method of the sound insulation pad in the front wall of the automobile is as follows:

[0107] (1) Thermoplastic back-spun cotton is placed on the net chain;

[0108] (2) Based on step (1), send the thermoplastic back-spun cotton into the oven for drying; the temperature of the upper o...

Embodiment 2

[0118] This embodiment provides a sound-insulating pad in the front wall of an automobile, which includes a sound-insulating cotton layer, a heavy coating layer, a foot pad and a PU foam layer that are stacked in sequence, wherein the material of the sound-insulating cotton layer is thermoplastic back-spun cotton, and the heavy-duty The coating material is EPDM, and the foot pads are EPP foot pads. The parameters of each layer are as follows:

[0119] composition parameter Thermoplastic back spun cotton layer Thickness 10mm EPDM layer Thickness 1mm EPP foot pad Thickness 10cm; Density 25kg / m 3

PU foam layer Thickness 15cm

[0120] The preparation method of the sound insulation pad in the front wall of the automobile is as follows:

[0121] (1) Thermoplastic back-spun cotton is placed on the net chain;

[0122] (2) Based on step (1), send the thermoplastic back-spun cotton into the oven for drying; the temperature of the upper ove...

Embodiment 3

[0132] This embodiment provides a kind of sound-insulating pad in the front wall of an automobile, comprising a sound-insulating cotton layer, a heavy coating layer, a foot pad and a PU foam layer which are stacked in sequence, wherein the material of the sound-insulating cotton layer is felt, and the heavy-coated layer is made of felt. The material is EVA, and the foot pads are EPP foot pads. The parameters of each layer are as follows:

[0133] composition parameter felt layer Thickness 15mm EVA layer Thickness 1.5mm EPP foot pad Thickness 15cm; Density 30kg / m 3

PU foam layer Thickness 20cm

[0134] The preparation method of the sound insulation pad in the front wall of the automobile is as follows:

[0135] (1) Place the felt on the net chain;

[0136] (2) Based on step (1), send the felt into the oven for drying; the temperature of the upper oven is set at 350°C, the temperature of the lower oven is set at 350°C, and the dryi...

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Abstract

The invention provides an automobile front wall inner sound insulation pad and a preparation method and application thereof. The automobile front wall inner sound insulation pad comprises a sound insulation cotton layer, a heavy coating, a pedal cushion block and a PU foaming layer which are sequentially arranged in a stacked mode, and the preparation method comprises the following steps of dryingand pressing to form the sound insulation cotton layer for use; drying, adsorbing and forming the heavy coating, adhering the heavy coating to the pedal cushion block, then foaming, adhering the heavy coating to the pressed and formed sound insulation cotton layer, and finally cutting to obtain the automobile front wall inner sound insulation pad. The sound insulation cotton layer, the heavy coating, the pedal cushion block and the PU foaming layer are structurally adopted to solve the problem of single structure, the overall sound absorption and insulation performance is improved, meanwhile,the pedal cushion block is pre-buried during foaming, the sound insulation performance is further improved while supporting is achieved, and wide application prospects are achieved.

Description

technical field [0001] The invention belongs to the field of automobile interior decoration, and in particular relates to an automobile front wall inner sound insulation pad and its preparation method and application, in particular to a high NV automobile front wall inner sound insulation pad and its preparation method and application. Background technique [0002] With the rapid development of the world economy, the continuous improvement of people's living standards, and the rapid development of the automobile industry, people's requirements for automobiles are not only beautiful appearance, but also the comfort, functionality and noise resistance of the interior decoration. high demands. During the driving process of the car, various noises will be transmitted to the cabin, causing noise pollution to the drivers and passengers. Therefore, the front wall inner sound insulation pad is generally installed on the body sheet metal of the car cockpit for sound absorption and so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/06B32B27/40B32B9/00B32B9/04B32B33/00B60R13/08B29C44/12B29K75/00
CPCB29C44/12B29K2075/00B32B5/02B32B5/18B32B27/06B32B2255/26B32B2262/062B32B2266/0278B32B2307/102B32B2605/08B60R13/08
Inventor 过海龙朱可达
Owner WUXI GISSING AUTO PARTS CO LTD
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