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Vibration attenuation blanket

A surface layer and short fiber technology, which is applied in the field of automotive interior materials, can solve the problems of no better and achieve the effects of reducing noise hazards, good sound absorption performance, and high sound insulation performance

Inactive Publication Date: 2019-08-16
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

For improving the sound absorption performance in the car, there is usually no better way for traditional carpet surface materials, which makes the application of traditional vehicle carpet surface materials have certain limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The surface layer is manufactured using a standard industrial scale carpet production line. Short fibers and microfibers are mixed and formed in non-woven fabrics by carding and cross-lapping, and then covered with latex to form a blanket surface structure that can be used alone or combined with other functional layers, that is, vibration-damping blanket 1 : After testing, the thickness of the damping blanket is 5mm, and the area weight is 800g / m 2 , the linear density of the short fibers is 4dtex, the linear density of the ultrafine fibers in the vibration damping blanket is 0.05dtex, calculated by weight percentage, the content of the ultrafine fibers is 20wt%.

Embodiment 2

[0028] The surface layer is manufactured using a standard industrial scale carpet production line. Short fibers and superfine fibers are mixed and formed in non-woven fabrics by carding and cross-lapping, and then covered with latex to form a blanket surface structure that can be used alone or combined with other functional layers, that is, vibration-damping blanket 2 : After testing, the thickness of the damping blanket is 5mm, and the area weight is 800g / m 2 , the linear density of the ultrafine fibers in the damping blanket is 0.05dtex, and the linear density of the short fibers is 4dtex. The only difference from Example 1 is that the content of ultrafine fibers in the vibration-damping blanket 2 is 8wt%.

Embodiment 3

[0030] The surface layer is manufactured using a standard industrial scale carpet production line. Short fibers and superfine fibers are mixed and formed in non-woven fabrics by carding and cross-lapping, and then covered with latex to form a blanket surface structure that can be used alone or combined with other functional layers, that is, vibration-damping blanket 3 : After testing, the thickness of the damping blanket is 5mm, and the area weight is 800g / m 2 , the linear density of the short fibers is 4dtex, calculated by weight percentage, the content of the ultrafine fibers is 20wt%. The only difference from Example 1 is that the linear density of the ultrafine fibers used is 0.1 dtex.

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Abstract

The invention discloses a vibration attenuation blanket. The vibration attenuation blanket at least comprises a surface layer, the surface layer is made from short fibers and superfine fibers in a mixed mode, and the vibration attenuation blanket is characterized in that the line density of the superfine fibers is 0.02 dtex-0.5 dtex, by calculating in percentage by weight, the content of the superfine fibers is larger than or equal to 8 wt%, the line density of the short fibers is 1-20 dtex, and the length of the short fibers is between 25 mm-130 mm. According to the vibration attenuation blanket, the very high sound insulation performance can be exerted, and meanwhile, the good sound absorption performance is achieved; and the high-end oriented and private requirements for transportationmeans such as vehicles can be met, and the noise nuisance to human ears is reduced.

Description

technical field [0001] The invention relates to the technical field of automotive interior materials, in particular to a vibration-damping blanket. Background technique [0002] Different types of carpets are usually used in the car interior, some are made of carpet surface and felt, some are composed of carpet surface, EVA, felt, and some are composed of carpet surface, EPDM and PU. According to different requirements of acoustic performance, customers will choose different types of carpets. And no matter what type of carpet, there is usually no lack of carpet surface. There are two main types of blankets: tufted and needled. Tufted blankets are generally used in mid-to-high-end models, and the price is relatively high; while needled blankets are often used in civilian models. The carpet surface not only has physical and chemical performance requirements, but also has higher and higher requirements for acoustic performance in recent years. [0003] Publication number is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60N3/04B60R13/02B60N2/64B60R5/04B32B27/02B32B27/12B32B27/06B32B5/18B32B7/12B32B33/00
CPCB32B5/022B32B5/08B32B5/18B32B5/245B32B5/26B32B7/12B32B33/00B32B2307/102B32B2605/003B60N2/64B60N3/048B60R5/044B60R13/02
Inventor 张丛见
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD