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Production method of automobile heat insulating pad

A production method and heat insulation pad technology, which is applied in the field of automotive interior parts, can solve the problems that the sound absorption index does not meet the requirements, the sound insulation pad has no profit margin, and is not conducive to the lightweight of the whole vehicle, so as to meet the requirements of low-cost design and reduce Weight, the effect of making up for uneven density

Inactive Publication Date: 2012-05-02
WUXI GISSING AUTO PARTS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing heat insulation pads mainly have the following problems: 1. The sound absorption index does not meet the requirements; 2. The rigidity of the product is poor, especially the product with light weight is easy to break; 3. The product is heavy, which is not conducive to the lightweight of the whole vehicle. Energy saving; 4. OEMs require cost reduction every year, resulting in no profit margin for sound insulation mats made of existing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1 The production process steps of GAC Toyota Yazhi machine cover heat insulation pad are as follows:

[0019] (1) Insert: Take the purchased glass wool raw material, divide it into two according to the height from the middle, and then insert a layer of glass fiber mat between the two layers of glass wool to obtain glass wool and glass fiber mat.

[0020] The diameter of the glass wool glass filament is 5.5 μm, and the diameter of the glass fiber mat glass filament is 11 μm.

[0021] (2) Spreading: spread the material on the workbench. When spreading the material, the order from top to bottom is: skin needle-punched non-woven fabric, glass wool and glass fiber felt, and base cloth impregnated non-woven fabric.

[0022] (3) Compression molding: Press and form the laid skin needle-punched non-woven fabric, glass wool and glass fiber felt, and base fabric impregnated non-woven fabric in a press to form a primary product; molding temperature during pressing: Mold te...

Embodiment 2

[0027] Example 2 The production process steps of GAC Toyota Yazhi engine compartment cowl heat insulation pad are as follows:

[0028] (1) Insert: Take the purchased glass wool raw material, divide it into two according to the height from the middle, and then insert a layer of glass fiber mat between the two layers of glass wool to obtain glass wool and glass fiber mat.

[0029] The diameter of glass wool glass filaments is 6.5 μm, and the diameter of glass fiber mat glass filaments is 19 μm.

[0030] (2) Spreading: spread the material on the workbench. When spreading the material, the order from top to bottom is: skin needle-punched non-woven fabric, glass wool and glass fiber felt, and base cloth impregnated non-woven fabric.

[0031] (3) Compression molding: Press and form the laid skin needle-punched non-woven fabric, glass wool and glass fiber mat, and base fabric impregnated non-woven fabric in the press to form the initial product; molding temperature during pressing: ...

Embodiment 3

[0035] Example 3 The production process steps of GAC Toyota's new Camry hybrid engine compartment sound insulation pad are as follows:

[0036] (1) Insert: take the purchased glass wool raw material, divide it into two according to the height from the middle, and then insert a layer of glass fiber felt between the two layers of glass wool to obtain glass wool and glass fiber felt.

[0037] The diameter of glass wool glass filaments is 6 μm, and the diameter of glass fiber mat glass filaments is 15 μm.

[0038] (2) Spreading: spread the material on the workbench. When spreading the material, the order from top to bottom is: skin needle-punched non-woven fabric, glass wool and glass fiber felt, and base cloth impregnated non-woven fabric.

[0039] (3) Compression molding: Press and form the laid skin needle-punched non-woven fabric, glass wool and glass fiber mat, and base fabric impregnated non-woven fabric in the press to form the initial product; molding temperature during pr...

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Abstract

Belonging to the technical field of automobile interior decorative parts, the invention relates to a production method of an automobile heat insulating pad. The method mainly selects glass wool made of low-diameter fiberglass and a glass fiber mat made of large-diameter fiberglass as the base materials, which are subjected to material imbedding, material spreading, compression moulding, cooling setting, and then to water cutting and examination, thus obtaining an automobile heat insulating pad product. The method of the invention satisfies the performance index requirements of a heat insulating pad for sound absorption, hear resistance, light weight, and high rigidity, etc., substantially reduces the weight of a heat insulating pad, and meets the design requirement for low weight of a whole vehicle. The material spreading process adopts manual spreading, so that the defect of nonuniform surface density of glass wool and glass fiber mats can be remedied. The produced product has the advantages of high rigidity, uneasy fracturing and deformation. And the raw material purchase cost is low, thus satisfying the requirement for low cost design of a whole vehicle.

Description

technical field [0001] The invention relates to a production method of an automobile heat insulation pad whose main material is glass fiber mat sandwiched with glass wool, in particular to an automobile heat insulation pad installed in the engine compartment of an automobile to play the role of heat insulation, sound insulation and beautification. A production method of a heat pad belongs to the technical field of automotive interior parts. Background technique [0002] Car heat insulation pads are generally installed in the engine compartment of cars to play the role of heat insulation, sound insulation and beautification. 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, perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/02B32B17/12B32B37/06B32B37/10B32B38/04B60R13/08
Inventor 王俊东
Owner WUXI GISSING AUTO PARTS CO LTD