Automobile dash board sound insulation pad making process

A preparation process and dash panel technology, which is applied in the field of automobile dash panel sound insulation pad preparation process, can solve problems such as failure to meet customer requirements, poor noise reduction and heat insulation effects, etc., and achieve improved preparation speed, convenient production, and fast speed Effect

Active Publication Date: 2015-09-16
JIANGSU QISHENG MODERN NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional process, the plastic layer, foam layer and non-woven layer are usually combined by hot pressing. This process has poor noise reduction and heat insulation effects and cannot meet customer requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Through various physical performance tests, chemical performance tests and user experience investigations on the finished sound insulation mats under various specific implementation process parameters, the following schemes are obtained as the best embodiments.

[0019] The preparation process steps are as follows:

[0020] [1] Preparation of the felt layer: put the felt raw material on the mold for hot-pressing molding, the steps are: first feed the laid material into the molding mold, and then pressurize the water vapor, the ventilation time is 8s, the water vapor The pressure is 0.88MPa, the water vapor inlet time is 10s, and the water vapor outlet time is 17s; after the ventilation is completed, it is transferred to a hot-pressing mold, pressurized to form it, and a semi-finished product is obtained; the heating and holding time is 10min, and the molding temperature is 180 ℃, molding pressure 6.5MPa; after cooling, put it on the shaping tool and set it aside;

[00...

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PUM

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Abstract

The invention relates to an automobile dash board sound insulation pad making process. The process comprises the main steps of (1) carrying out host press molding on a felt layer; (2) carrying out plastic sucking molding on an EVA layer; (3) adhering the felt layer and the EVA layer; (4) carrying out PU foam molding; (5) carrying out hot press molding on a PVC sponge layer; (6) carrying out ultrasonic welding; and (7) cutting by a water jet scalpel. According to the process, the sound insulation pad making process is optimized, the sound insulation pad making speed is high, the sound insulation pad making efficiency is high, the precision is good, the made sound insulation pad integrates the advantages of various raw materials, and the sound absorption performance, the sound insulation performance, the heat insulation performance and the ageing resistance can be greatly improved.

Description

technical field [0001] The invention relates to a preparation process of an automobile interior part, in particular to a preparation process of an automobile dash panel sound insulation pad. technical background [0002] With the rapid development of automobile technology, consumers have higher and higher requirements for the driving environment of the vehicle. Major automobile manufacturers are also working hard to improve the comfort level of the vehicle. In order to prevent the noise and heat generated by the engine from entering the cockpit, Sound insulation pads are usually installed in the engine compartment. In the traditional process, the plastic layer, the foam layer and the non-woven layer are usually hot-pressed and laminated. The noise reduction and heat insulation effect of this process is poor, and it cannot meet the requirements of customers. Contents of the invention [0003] In order to improve the defects of the prior art and provide a preparation proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B27/30B32B27/32B32B27/40B32B37/12B32B37/10B32B38/16B32B38/18
CPCB32B27/08B32B27/306B32B27/32B32B27/40B32B37/10B32B37/12B32B38/164B32B38/18B32B2037/1215
Inventor 李昀刘小波
Owner JIANGSU QISHENG MODERN NEW MATERIAL
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