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Sound absorption cotton material with air cavity layer

A technology of air cavity and sound-absorbing cotton, which is applied in the field of non-woven melt-blown sound-absorbing cotton materials, can solve problems such as poor sound-absorbing effect, and achieve the effect of improving sound-absorbing effect

Pending Publication Date: 2018-08-17
SHANGHAI JIEYINGTU NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a sound-absorbing material that can significantly improve the sound-absorbing effect of the material while ensuring the weight of the sound-absorbing material without affecting the sound-absorbing effect of the existing melt-blown sound-absorbing cotton. Sound-absorbing cotton material with air cavity layer for other aspects of performance

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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  • Sound absorption cotton material with air cavity layer
  • Sound absorption cotton material with air cavity layer
  • Sound absorption cotton material with air cavity layer

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Embodiment Construction

[0014] see figure 2 , a sound-absorbing cotton material with an air cavity layer shown in the figure is composed of a first spunbond fabric 10, a melt-blown sound-absorbing cotton 20, an air cavity layer 30, and a second spunbond fabric 40 in sequence. Several hexagonal air cavities 31 are arranged in the air cavity layer 30; the several hexagonal air cavities 31 are arranged in a honeycomb structure.

[0015] The sound-absorbing cotton material with the air cavity body layer of the present invention can obviously increase the sound absorption coefficient of the material and improve the sound absorption performance after adding an air cavity body layer. Now the impedance tube method is used to test the initial sound absorption coefficient of several sound-absorbing cotton materials and the sound absorption coefficient after adding the air cavity layer to fully verify the improvement of its sound-absorbing performance. For test results see image 3 , Figure 4 with Figure...

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 discloses a sound absorption cotton material with an air cavity layer. The sound absorption cotton material is characterized by being formed by overlaying first spunbonded cloth, melt-blown sound absorption cotton, an air cavity layer and second spunbonded cloth in sequence. The sound absorption cotton material maintains the weight and further improves the sound absorption effect without affecting other performance.

Description

technical field [0001] The invention belongs to the field of non-woven melt-blown sound-absorbing cotton materials, in particular to a sound-absorbing cotton material with an air cavity body layer. Background technique [0002] The most important physical property of sound-absorbing cotton material is the sound-absorbing effect. The higher the sound-absorbing coefficient, the better the sound-absorbing performance, and the better the sound-absorbing material. The sound-absorbing effect is related to many aspects of the material, such as the material itself, the thickness of the material, the porosity of the sound-absorbing material, the specific surface area of ​​the sound-absorbing material, etc. The porosity and specific surface area determine the fineness of the fiber , which determines the sound-absorbing effect of the material. [0003] see figure 1 , the ordinary sound-absorbing cotton material (including PP and PP+PET materials) shown in the figure is mainly compose...

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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IPC IPC(8): B32B3/20B32B5/02B32B27/06B32B27/12B32B27/32B32B27/36
CPCB32B3/20B32B5/02B32B27/06B32B27/12B32B27/32B32B27/36B32B2307/102
Inventor 刘伦贤傅双亭贺豪沈宏宇
Owner SHANGHAI JIEYINGTU NEW MATERIAL TECH
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