Method for producing automotive sound-insulating pad

A technology of automobile sound insulation mat and production method, which is applied in the field of automobile sound insulation mat, can solve problems such as the sound absorption index not meeting the requirements, unfavorable vehicle lightweight, and product materials that are not environmentally friendly, so as to improve operating efficiency, reduce weight, and reduce costs Effect

Active Publication Date: 2011-03-23
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 sound insulation pads mainly have the following problems: 1. The sound absorption index cannot meet the requirements; 2. The product materials are not environmentally friendly; 3. The product is heavy, which is not conducive to the lightweight of the whole vehicle and energy saving

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Production of Zhengzhou Nissan C16A front wall baffle sound insulation pad, its specification: L1750×W700mm.

[0012] The production process steps of the sound insulation pad are as follows:

[0013] The base material is a thermoplastic felt material, and the thermoplastic felt includes 45% low-melting fiber filaments, which are polyester fibers; 20% cotton fibers and 35% recycled cotton;

[0014] a1. Laying of raw materials: Spread the thermoplastic felt on the mesh chain of the oven. When laying, there is no requirement for the front and back sides;

[0015] b1. Softening at drying temperature: The thermoplastic felt is sent into the oven by the oven network chain transmission mechanism for drying. The temperature of the upper heating zone of the oven is 240°C, the temperature of the lower heating zone is 320°C, and the drying time is 270s;

[0016] c1. Compression molding: use a 300-ton hydraulic molding machine to press and cool the above-mentioned baked materials ...

Embodiment 2

[0020] Produce Zhengzhou Nissan C16A front wall baffle inner lower sound insulation pad, its specification is: L1750×W950mm.

[0021] The production process steps of the sound insulation pad are as follows:

[0022] The base material is a thermoplastic felt material, and the thermoplastic felt includes 45% low-melting fiber filaments, which are polyester fibers; 20% cotton fibers and 35% recycled cotton;

[0023] a2. Laying of raw materials: Spread the thermoplastic felt on the mesh chain of the oven. When laying, there is no requirement for the front and back sides;

[0024] b2. Material drying temperature: The raw material is sent into the oven by the oven network chain transmission mechanism for drying. The temperature of the upper heating zone of the oven is 240°C, the temperature of the lower heating zone is 320°C, and the drying time is 270s;

[0025] c2. Compression forming: using a 300-ton hydraulic forming machine, the above-mentioned baked materials are compressed a...

Embodiment 3

[0029] Production of GAC Toyota 334 trunk sound insulation pads, the specification is: L1550×W1450mm.

[0030] The production process steps of the sound insulation pad are as follows:

[0031] The base material is a thermoplastic felt material, and the thermoplastic felt includes 45% low-melting fiber filaments, which are polyester fibers; 20% cotton fibers and 35% recycled cotton;

[0032] a3. Laying of raw materials: Spread the thermoplastic felt on the mesh chain of the oven. When laying, there is no requirement for the front and back sides;

[0033] b3. Material drying temperature: The raw material is sent into the oven by the oven network chain transmission mechanism for drying. The temperature of the upper heating zone of the oven is 230°C, the temperature of the lower heating zone is 310°C, and the drying time is 255s;

[0034] c3. Compression molding: using a 300-ton hydraulic molding machine, the above-mentioned baked materials are compressed and cooled in the mold; ...

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Abstract

The invention relates to a method for producing an automotive sound-insulating pad. The method for producing the automotive sound-insulating pad comprises the following steps of: a, laying a raw material, namely laying a thermoplastic felt material on the network chain of an oven; b, baking and softening, namely feeding the thermoplastic felt material into the oven through the network chain of the oven for baking and softening, wherein the temperature of an upper heating zone in the oven is between 230 and 250 DEG C, the temperature of a lower heating zone is between 310 and 330 DEG C, and the baking time is 255 to 285 s; c, performing compression molding, namely performing compression and cooling on the baked and softened thermoplastic felt material to be a semi-finished product, wherein during the compression and cooling molding, the molding pressure is 16 to 17 MPa, the molding time is 90 to 110 s, and the cooling temperature is between 20 and 30 DEG C; d, performing water jet cutting, namely positioning the semi-finished product subjected to the compression cooling, and performing water jet cutting to obtain the required sound-insulating pad, wherein the cutting water pressure is 40,000 to 50,000 psi, and the cutting air pressure is 0.6 to 0.8 MPa; and e, inspecting, namely inspecting the sound-insulating pad, and packing and warehousing. The method for producing the automotive sound-insulating pad is simplified, energy-saving and environment-friendly, the automotive sound-insulating pad has high strength, the production efficiency of the method is high, and the method can reduce labor intensity.

Description

technical field [0001] The invention relates to a production method of an automobile sound-insulating mat, in particular to an automobile sound-insulating mat which is installed in the front panel of an automobile and has the functions of heat insulation and sound insulation, and belongs to the technical field of automobile interior trim processing. Background technique [0002] The car sound insulation pad is installed in the cockpit of the front wall of the car to play the role of heat insulation and sound insulation. 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 absorption, low grammage, and environmental protection of sound-insulati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/00B29C70/34B29L31/58
Inventor 叶佳乐
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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