Novel passage inner panel sound absorption cotton

A sound-absorbing cotton and channel technology, applied in the field of sound-absorbing materials, can solve problems such as poor shockproof and heat insulation effects, difficulty in recycling sound-absorbing cotton corner waste, and unsatisfactory sound-absorbing effects, so as to increase the aesthetic feeling and be decorative Strong, lightweight effect

Inactive Publication Date: 2017-12-01
HUBEI TIANYUN NOISE REDUCTION & ANTIVIBRATION NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PET polyester fiber is a chemical synthetic fiber with a high melting point (above 250°C) and is difficult to degrade, which makes the edge sealing mold temperature of traditional PET / PP two-component sound-absorbing cotton products high
At the same time, it is difficult to recycle PET / PP two-component sound-absorbing cotton scraps
[0003] The existing sound-absorbing felt for automobiles has sound-absorbing, fire-proof, shock-proof, heat-insulating, etc., but the sound-absorbing effect is still not up to the expected effect, and the shock-proof and heat-insulating effects are not very good, and the hardness is not enough, which directly affects the quality of the product. The service life, the radiation around the existing car is relatively large, it is easy to cause harm to the human body

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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  • Novel passage inner panel sound absorption cotton
  • Novel passage inner panel sound absorption cotton

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Experimental program
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Effect test

Embodiment 1

[0023] see Figure 1-2 As shown, the present invention provides a technical solution: a new type of channel inner panel sound-absorbing cotton, the channel inner panel sound-absorbing cotton includes cotton core 1, circular through hole 2, double-sided edge banding 3, square through hole 4, square Groove 5, round bottom groove 6, pointed groove 7, outer sound-absorbing layer 8, middle sound-absorbing layer 9, first sound-absorbing inner layer 10 and second sound-absorbing inner layer 11, the upper center of the cotton core 1 A circular through hole 2 is opened, and a square through hole 4 is opened in the lower part of the center of the cotton core 1. The outer edges of the cotton core 1, the circular through hole 2 and the square through hole 4 are designed as double-sided seals. Side 3, the upper right side of the cotton core 1 is provided with a square groove 5, the upper side of the cotton core 1 is provided with a round bottom groove 6, and the lower left side of the cott...

Embodiment 2

[0036] A new type of channel inner panel sound-absorbing cotton. The difference between this embodiment and Embodiment 1 is that the first sound-absorbing inner layer 10 is made by uniformly laying and pressing algae plant fibers.

[0037] The algae plants are squeezed and dried to obtain white algae plant fibers, which have the same excellent sound-absorbing function as the rubber sponge layer.

Embodiment 3

[0039] A new type of channel inner panel sound-absorbing cotton. The difference between this embodiment and Embodiment 1 is that the first sound-absorbing inner layer 10 is made of silicon rubber foam plastic material.

[0040] The silicone rubber plastic is dissolved into a liquid at high temperature and then cooled rapidly after passing through an inert gas. The interior contains a bubble structure to obtain a silicone rubber foam. The silicone rubber foam has the same excellent sound-absorbing function as the rubber sponge layer.

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Abstract

The invention discloses novel passage inner panel sound absorption cotton. The passage inner panel sound absorption cotton comprises a cotton core, a round through hole, double-faced sealing edges, a square through hole, a square groove, a round-bottom groove, a sharp groove, an outer sound absorption layer, a middle sound absorption layer, a first inner sound absorption layer and a second inner sound absorption layer, wherein the round through hole is formed in the middle upper part of the center of the cotton core; the square through hole is formed in the middle lower part of the center of the cotton core; the outer edges of the cotton core, the round through hole and the square through hole are designed to be double-faced sealing edges; the square groove is formed in the middle upper part of the right side of the cotton core; the round-bottom groove is formed in the upper side of the cotton core; the sharp groove is formed in the lower part of the left side of the cotton core. The novel passage inner panel sound absorption cotton is light in mass, good in sound absorption effect and performance and high in decoration performance, the materials are proportioned scientifically, processing is convenient due to adoption of a folding cutter, the processing efficiency is improved, the environment-friendly materials are adopted, pollution is reduced, the environment-friendly effect is improved, and recycling of the sound absorption cotton is facilitated.

Description

technical field [0001] The invention relates to the technical field of sound-absorbing materials, in particular to a novel sound-absorbing cotton for inner panels of channels. Background technique [0002] With the progress of society and the continuous improvement of people's consumption level, customers have higher and higher requirements for automobile sound absorption, sound insulation, light weight, and comfort. Traditional PET (polyethylene terephthalate) / PP (polypropylene) two-component sound-absorbing cotton has been widely used in the field of automotive sound insulation and noise reduction, which greatly improves the NVH performance of the vehicle. However, PET polyester fiber is a chemical synthetic fiber with a high melting point (above 250°C) and is difficult to degrade, which makes the edge sealing mold temperature of traditional PET / PP two-component sound-absorbing cotton products high. At the same time, it is difficult to recycle PET / PP two-component sound-a...

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): B32B9/02B32B9/04B32B19/08B32B19/06B32B27/32B32B27/02B32B27/12B32B33/00B32B7/12
Inventor 王皆晴何卫军李超李峰
Owner HUBEI TIANYUN NOISE REDUCTION & ANTIVIBRATION NEW MATERIAL
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