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Automobile roof material

A technology for car roofs and knitted fabrics, applied in the field of auto parts, can solve the problems of insufficient ductility of materials, hazards to people in the car, and easy breakage, etc., and achieve the effects of easy industrial production, high bending strength, and simple preparation

Pending Publication Date: 2022-06-07
上海安通林汽车饰件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the above materials are used for production, there will be a defective rate of 2.17%, and the main reason for the defective products is that the ductility of the material is not enough and it is easy to break
Moreover, the polyurethane foam sheet will volatilize VOC during use, which will cause harm to the occupants in the car.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A kind of automobile ceiling material, its structure is as figure 2 As shown, it includes a knitted fabric 1, an upper non-woven fabric layer 2, an upper glass fiber layer 3, a polyester layer 7, a lower glass fiber layer 5 and a lower non-woven fabric layer 6 from top to bottom, wherein the polyester layer 7 The material used is all polyester, and its specific formula is as follows: 10% low-melting point polyester fiber, 90% conventional polyester fiber, among which, the low-melting point polyester fiber is polyester fiber produced by Tianjin Petrochemical Company, and its melting point is 110~ 120°C, conventional polyester fiber was purchased from Yancheng Wantong Fiber Technology Co., Ltd. During the preparation, the polyester material used in this embodiment can be obtained by melting the low-melting polyester fiber and conventional polyester fiber and then mixing them by pultrusion.

[0040] During preparation, glue is coated on the lower side of the knitted fabr...

Embodiment 2

[0042] A kind of automobile ceiling material, its structure is as image 3 As shown, it includes a knitted fabric 1, an upper non-woven fabric layer 2, an upper glass fiber layer 3, a polyester layer 7, a lower glass fiber layer 5 and a lower non-woven fabric layer 6 from top to bottom, wherein the polyester layer 7 Including the polyester material 72 and the spacer glass fiber 71 in the middle, the formula of the polyester material 72 is the same as that of the first embodiment. The thickness of the spacer glass fiber 71 accounts for 10% of the total thickness of the polyester layer 7 .

[0043] During preparation, glue is coated on the lower side of the knitted fabric 1, the upper side of the lower non-woven fabric layer 6, and both sides of other layers, and after stacking in sequence, hot pressing is formed, wherein the temperature used for hot pressing is 135°C , the pressure is 5MPa.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention relates to an automobile roof material which comprises knitted fabric, an upper non-woven fabric layer, an upper glass fiber layer, a polyester layer, a lower glass fiber layer and a lower non-woven fabric layer which are sequentially bonded, the polyester layer contains low-melting-point polyester fibers, a layer of spaced glass fibers is arranged in the middle of the polyester layer, and the thickness of the spaced glass fibers accounts for 0-10% of the thickness of the whole polyester layer. The automobile roof material is high in bending strength, free of VOC volatilization, convenient to process and environmentally friendly; the preparation is simple, and industrial production is easy.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to an auto roof material. Background technique [0002] The ceiling trim is an important part of the vehicle interior. Its main function is to improve the decoration of the car. At the same time, the ceiling trim can also improve the heat insulation and heat insulation effect between the inside and the outside of the car; reduce the noise inside the car, Improve the sound absorption effect; improve the comfort and safety of riding. The ceiling material needs to have better ductility in order to increase the yield rate of ceiling processing. Existing car roof materials, its structure is as follows figure 1 As shown, from top to bottom, it includes knitted fabric 1, upper non-woven fabric layer 2, upper glass fiber layer 3, polyurethane foam sheet 4, lower glass fiber layer 5 and lower non-woven fabric layer 6, and glue is passed between different materials Bonded and then heat ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/02B32B5/26B32B7/12B32B27/02B32B27/36B32B17/02B32B17/10B32B17/12B60R13/02
CPCB32B5/02B32B5/26B32B5/022B32B7/12B60R13/0212B32B2250/20B32B2262/0276B32B2262/101B32B2307/546B32B2605/08B32B2605/003
Inventor 钱晓燕
Owner 上海安通林汽车饰件有限公司