Composite sound-absorbing cotton for shock absorption of automobile component and automobile component

A technology of sound-absorbing cotton and components, which is applied to vehicle parts, synthetic resin layered products, layered products, etc., and can solve the problems of reduced shape stability of sound-absorbing materials, low elastic rate of superfine fibers, and deformation of sound-absorbing layers.

Inactive Publication Date: 2020-09-01
北京海纳川瑞延汽车饰件有限公司
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Problems solved by technology

Therefore, in order to increase the sound insulation effect of the car, the use of ultrafine fibers will be increased, but the cost price and weight will increase; The shape stability of the sound-absorbing material decreases, the thickness becomes thinner and thinner with the passage of time and the action of external force, and the sound-absorbing layer will be deformed and a series of quality problems

Method used

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  • Composite sound-absorbing cotton for shock absorption of automobile component and automobile component
  • Composite sound-absorbing cotton for shock absorption of automobile component and automobile component
  • Composite sound-absorbing cotton for shock absorption of automobile component and automobile component

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[0022] In order to have a clearer understanding of the technical features, purposes and effects of the invention, the specific embodiments of the present invention are now described with reference to the accompanying drawings, in which the same reference numerals represent components with the same or similar structures but the same functions.

[0023] In this article, "schematic" means "serving as an example, example or illustration", and any illustration or implementation described as "schematic" should not be interpreted as a more preferred or more advantageous Technical solutions. In order to keep the drawings concise, the drawings only schematically show the parts related to this exemplary embodiment, and they do not represent the actual structure and true proportion of the product.

[0024] refer to figure 1 , The present invention provides a composite sound-absorbing cotton used for shock absorption of automobile components. The composite sound-absorbing cotton 10 inclu...

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Abstract

The invention provides composite sound-absorbing cotton for shock absorption of an automobile component. The composite sound-absorbing cotton (10) comprises a first sound-absorbing layer (11), a second sound-absorbing layer (12) and a third composite layer (13). The second sound-absorbing layer (12) has a thickness direction (14). The first sound-absorbing layer (11) covers one side of the secondsound-absorbing layer (12) in the thickness direction (14) thereof. The third composite layer (13) is bonded to the other side of the second sound-absorbing layer (12) in the thickness direction (14)thereof. The first sound-absorbing layer (11) is made of a high-elasticity supporting fiber material. The second sound-absorbing layer (12) is made of an ultrafine fiber material. The third compositelayer (13) is made of a non-woven fabric material. The superfine fibers and the high-elasticity supporting fibers are compounded, so that the use amount of the superfine fibers is reduced, meanwhile,sound absorption performance is maintained; the high-elasticity supporting fibers have high elasticity, the thickness of the sound absorption material can be improved, and the long-term deformation ofthe shape of the sound absorption cotton is maintained.

Description

technical field [0001] The invention relates to the field of automobile body accessories. The invention specifically relates to a composite sound-absorbing cotton used for shock absorption of automobile components and the automobile components. Background technique [0002] At present, in order to reduce the noise of the cockpit when the car is running, sound-absorbing cotton is installed on the inner layer of the door trim panel, sub-dashboard, tailgate, rear bulkhead and other accessories. However, the existing sound-absorbing cotton is almost all composed of superfine fibers, and the greater the thickness and surface density of the fiber layer, the better the sound-absorbing effect. Therefore, in order to increase the sound insulation effect of the car, the use of ultrafine fibers will be increased, but the cost price and weight will increase; The shape stability of the sound-absorbing material decreases, and the thickness becomes thinner and thinner with the passage of...

Claims

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Application Information

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IPC IPC(8): B32B27/02B32B27/32B32B27/12B32B27/36B32B5/02B60R13/08
CPCB32B5/02B32B5/022B32B5/26B32B2262/0253B32B2262/0284B32B2307/10B32B2307/51B32B2307/56B32B2605/003B60R13/08
Inventor 梁圣浩金大瀷金红妍
Owner 北京海纳川瑞延汽车饰件有限公司
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