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Method for producing front wall sound insulation pad of automobile driving cabin

A production method and a technology for sound insulation pads, which are applied in the field of automobile interior trim parts processing, can solve the problems that the sound insulation index fails to meet the requirements, the sound absorption index fails to meet the requirements, and it is not conducive to the lightweight of the whole vehicle, so as to improve the operation efficiency and reduce the weight. , cost reduction effect

Active Publication Date: 2012-01-11
WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing cockpit cowl sound insulation pad mainly has the following problems: 1. The sound absorption index cannot meet the requirements; 2. The sound insulation index cannot meet the requirements; 3. The heat insulation is poor; 4. The product material is not environmentally friendly; 5. The product is heavy , which is not conducive to vehicle lightweight and energy saving

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Produce Dongfeng Nissan 423 cockpit front wall sound insulation pad, its specification is: L1600×W1100mm.

[0018] The production process steps of the cockpit cowl sound insulation pad are as follows:

[0019] The soft layer and hard layer thermoplastic felt materials are purchased from Yixing Junya Automotive Interior Parts Co., Ltd., and the density of the hard layer thermoplastic felt is 200 kg / m 3 , the density of the soft layer thermoplastic felt is 38㎏ / m 3 ;The density of hot melt film is 600kg / m 3 ; Calculated by weight percentage, the thermoplastic felt includes 45% low-melting fiber filaments, and the low-melting fiber filaments are polyester fibers; 20% cotton fibers and 35% recycled cotton;

[0020] (a) Laying of raw materials: place the hard layer of thermoplastic felt on the bottom layer, the hot-melt film on the middle layer, and the soft layer of thermoplastic felt on the upper layer, and spread it on the oven chain; in order to prevent the raw material...

Embodiment 2

[0026] Produce Dongfeng Co., Ltd. W03 cockpit front wall sound insulation pad, its specification is: L1650×W1160mm.

[0027] The production process steps of the cockpit cowl sound insulation pad are as follows:

[0028] The thermoplastic felt material of the soft layer and the hard layer is purchased from Zhenjiang Tongda Interior Material Co., Ltd., and the density of the thermoplastic felt of the hard layer is 200 kg / m 3 , the density of the soft layer thermoplastic felt is 38㎏ / m 3 ;The density of hot melt film is 600kg / m 3 ; Calculated by weight percentage, the thermoplastic felt includes 45% low-melting fiber filaments, and the low-melting fiber filaments are polyester fibers; 20% cotton fibers and 35% recycled cotton;

[0029] (a) Laying of raw materials: place the hard layer of thermoplastic felt on the bottom layer, the hot-melt film on the middle layer, and the soft layer of thermoplastic felt on the upper layer, and spread it on the oven chain; in order to prevent t...

Embodiment 3

[0035] Produce GAC Toyota 334 cockpit front wall sound insulation pad, its specification is: L1600×W1500mm.

[0036] The production process steps of the cockpit cowl sound insulation pad are as follows:

[0037] The thermoplastic felt material of the soft layer and the hard layer is purchased from Zhenjiang Tongda Interior Material Co., Ltd., and the density of the thermoplastic felt of the hard layer is 200 kg / m 3 , the density of the soft layer thermoplastic felt is 38㎏ / m 3 ;The density of hot melt film is 600kg / m 3 ; Calculated by weight percentage, the thermoplastic felt includes 45% low-melting fiber filaments, and the low-melting fiber filaments are polyester fibers; 20% cotton fibers and 35% recycled cotton;

[0038] (a) Laying of raw materials: place the hard layer of thermoplastic felt on the bottom layer, the hot-melt film on the middle layer, and the soft layer of thermoplastic felt on the upper layer, and spread it on the oven chain; in order to prevent the raw m...

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Abstract

The invention relates to a method for producing a front wall sound insulation pad of an automobile driving cabin, belonging to the technical field of automobile interior part processing. The method provided by the invention comprises the following steps of: placing a hard thermoplastic felt on a bottom layer, placing a hot melt film on a middle layer, placing a soft thermoplastic felt on an upper layer, and paving the raw materials on a net chain of an oven; feeding the raw materials into the oven through the net chain of the oven for drying and softening, and sufficiently dissolving the hot melt film on the middle layer; placing the materials in a mould after drying the materials in the oven, and pressing and cooling the materials in the mould to form a semi-finished product; locating the semi-finished product, and executing water jet cutting on the semi-finished product to obtain the required front wall sound insulation pad of the driving cabin; and boxing and warehousing after checking up. According to the method provided by the invention, the performance index requirements, such as sound absorption, sound insulation, environment friendliness, light weight and the like, of the front wall sound insulation pad assembly of the driving cabin can be satisfied; the weight of the front wall sound insulation pad of the driving cabin is greatly reduced; and the requirement for integral lightweight design is satisfied.

Description

technical field [0001] The invention relates to a production method of an automobile cockpit cowl sound insulation pad, in particular to an automobile cockpit cowl sound insulation pad which is installed in the cockpit of an automobile and has the functions of heat insulation, sound insulation and sound absorption, and belongs to the automobile The technical field of interior parts processing. Background technique [0002] The car cockpit front wall sound insulation pad is installed in the car front wall cockpit to play the role of heat insulation, sound insulation and sound absorption. In the era of more and more pursuit of high performance, environmental protection, energy saving, lightweight, and individualization, the interior of a car, like the shape of a car, has become an important factor for people to choose a car. Therefore, the requirements for automotive interior parts are getting higher and higher. In the prior art, performance indicators such as high sound abs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/10B32B38/04B32B27/02B32B27/04
Inventor 叶佳乐
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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