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Production method for bottom sound-absorbing pad of automobile engine

A technology of automobile engine and production method, which is applied in the field of automobile interior parts, can solve the problems of not meeting the acoustic performance requirements of sound insulation pads and heavy weight, and achieve the effects of reducing investment in production links and tooling, light weight, and ensuring product quality

Inactive Publication Date: 2019-02-05
WUXI GISSING AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of various types of sound insulation pads in the existing engine compartment are: heavy weight, unable to meet the acoustic performance requirements of some automobiles for the sound insulation pads in the engine compartment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0031] (1) Laying of raw materials: Lay the lower layer of PET non-woven fabric, glass wool, lightweight PU and upper layer of PET non-woven fabric in sequence on the workbench, the upper surface of the lower layer of PET non-woven fabric and the upper layer of PET non-woven fabric The lower surface of the composite PE rubber powder;

[0032] Among them, the lower layer of PET non-woven fabric and the upper layer of PET non-woven fabric are monomer needle-punched non-woven fabrics, the glass wool is a single-layer structure in contact with the PE rubber powder of the lower layer of PET non-woven fabric, and the lightweight PU is a single-layer structure and The PE rubber powder of the upper PET non-woven fabric is in contact with one side;

[0033] The density of the lower layer of PET non-woven fabric and the upper layer of PET non-woven fabric is 165 g / m2, the thickness after compounding PE rubber powder is 12mm, and the weight of PE rubber powder is 22g / m2; the density of g...

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Abstract

The invention belongs to the technical field of automobile interior parts, and relates to a production method for a bottom sound-absorbing pad of an automobile engine. The bottom sound-absorbing pad is mainly made of bottom-layer PET (Polyethylene Terephthalate) non-woven fabric, glass wool, light PU (Polyurethane) and upper-layer PET non-woven fabric. The bottom sound-absorbing pad of the automobile engine is made through laying of raw materials, hot mold pressure-keeping molding and punching, post treatment and boxing. The production method has a simple process flow, the investment of production links and tools is reduced, the labor cost is lowered, the punching product is stable in size, the production efficiency is improved effectively, and the product quality is ensured. Moreover, noharmful substance is generated in the production process, and the bottom sound-absorbing pad belongs to an environment-friendly product. By adopting the production method, the indexes of light weightand good sound-absorbing effect are realized for the bottom sound-absorbing pad of the engine, the noise of the engine is lowered effectively, the requirement on the acoustic design of the whole vehicle is met, and the forefront level of the international standard is reached.

Description

technical field [0001] The invention belongs to the technical field of automotive interior parts, and relates to a method for producing a sound-insulating pad at the bottom of an automobile engine, in particular to a bottom of an automobile engine that is installed on the lower side of the oil pan of an automobile engine to reduce the noise emitted by the engine. The production method of the sound insulation mat. Background technique [0002] Automotive interior parts are generally installed inside the car body to play the role of beautification, protection, and 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 the car, like the performance of the car, has attracted more and more attention. Therefore, the requirements for automotive interior parts are getting higher and higher. [0003] In the existing technology, performance indicators...

Claims

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Application Information

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IPC IPC(8): B32B37/10B32B37/06B32B37/12B32B17/02B32B17/12B32B17/10B32B27/12B32B27/36B32B27/40B32B7/12B60R13/08
CPCB32B5/02B32B5/022B32B5/26B32B7/12B32B27/12B32B27/40B32B37/06B32B37/10B32B37/1207B32B2037/1238B32B2262/0284B32B2262/101B32B2307/102B32B2307/718B32B2307/734B32B2309/02B32B2309/04B32B2309/12B32B2605/08B60R13/0838
Inventor 薛洪斌
Owner WUXI GISSING AUTO PARTS CO LTD
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