Silencing felt and application thereof

A technology of cotton fiber and low-melting fiber, which is applied in the field of sound-absorbing felt, can solve problems such as difficult to achieve sound absorption and VOC performance, unfavorable large-scale promotion, and increased cost, so as to achieve stable and controllable VOC performance and meet VOC performance requirements , Excellent sound absorption performance and VOC performance

Active Publication Date: 2019-05-24
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

However, although this patent improves the sound absorption performance of the felt sheet to a certain extent by adding foam particles, it also brings about a corresponding increase in cost, which is also not conducive to large-scale promotion.
[0005] The cotton felt in the prior art may have outstanding performance in certain aspects, but there are many deficiencies in performance in other aspects, it is difficult to achieve the unity of sound absorption and VOC performance, and the cost is generally high

Method used

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  • Silencing felt and application thereof
  • Silencing felt and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a kind of sound-absorbing felt, in terms of mass percentage, the content of recycled cotton in the sound-absorbing felt is 90%, the content of low melting point fiber is 10%, and the cotton content of recycled cotton is 100% , the area weight is 1000g / m 2 , the thickness is 15mm.

[0029] The sound-absorbing felt obtained in this example is designated as sample a.

Embodiment 2

[0031] This embodiment provides a kind of anechoic felt, in terms of mass percentage, the content of recycled cotton in the described anechoic felt is 90%, the content of low melting point fiber is 10%, and the cotton content of recycled cotton is 90% , the area weight is 1000g / m 2 , the thickness is 15mm.

[0032] The sound-absorbing felt obtained in this example is designated as sample b.

Embodiment 3

[0034] This embodiment provides a kind of anechoic felt, in terms of mass percentage, the content of recycled cotton in the described anechoic felt is 85%, the content of low melting point fiber is 15%, and the cotton content of recycled cotton is 100% , the area weight is 1000g / m 2 , the thickness is 15mm.

[0035] The sound-absorbing felt obtained in this example is designated as sample c.

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Abstract

The invention relates to a silencing felt and application thereof. The silencing felt is composed of, by weight percentage, 75-90% of cotton fiber and 10-20% of low-melting-point fiber. By regulatingthe content of the cotton fiber and the low-melting-point fiber, the silencing felt can achieve excellent sound absorbing performance and VOC (volatile organic compounds) performance, thereby, compared with common PET (polyethylene terephthalate) felts, being higher in sound absorbing performance, stable and controllable in VOC performance and capable of meeting the requirements of major automobile manufactures on the sound absorbing performance and the VOC performance and further having a good application prospect.

Description

technical field [0001] The invention belongs to the field of automobile interior decoration, and in particular relates to a sound-absorbing felt and an application thereof. Background technique [0002] There are two types of sound-absorbing felts commonly used in the market: air felt and carded felt. This type of felt is mainly composed of cotton fibers, polyester and low melting point fibers. The acoustic performance of the anechoic felt can be improved by adjusting the amount, length, fineness and other indicators of the fiber, which can play a good role in dissipating the sound waves entering the felt, and convert the sound energy into heat energy and consume it, thereby generating higher sound absorption performance. It is often used as a sound-absorbing material in the field of automobiles or rail transit, which can reduce the noise inside the car and improve the ride experience. But usually the VOC performance of this kind of cotton felt is generally poor, which af...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/541D04H1/4274D04H1/485
CPCY02P70/62
Inventor 张丛见尤良军陈杰陈晨陈奇
Owner WUXI GISSING AUTO ACOUSTIC PARTS TECH CO LTD
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