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Lightweight inner dash

A technology for front wall and decorative parts, which is applied to the field of interior front wall decorative parts, can solve the problems of noise attenuation and degradation of fiber layers and foils, and achieve the effects of maintaining the initial thickness, increasing the thickness and improving the acoustic performance.

Pending Publication Date: 2019-07-30
AUTONEUM MANAGEMENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The noise attenuation of such fiber layers as well as of the foil is thus degraded

Method used

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  • Lightweight inner dash
  • Lightweight inner dash

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Embodiment Construction

[0069] figure 1 A cross section of side-by-side composite fibers 1 according to the present invention is shown. These fibers are made from two thermoplastic polymers with differences between the polymers that allow the fibers to coil during the fiber production process, forming crimped fibers. The juxtaposed sides 2, 3 may be organized symmetrically as shown in Figure A, or may be asymmetrical as shown in Figure B. Additionally, the fibers may be hollow 4, as shown in the side-by-side fiber cross-section of Figure C as an example.

[0070] figure 2 is a schematic cross-sectional view of a vehicle 5 in which an inner dash trim part has a porous fiber layer 6 facing the car body and an air-permeable foil 7 facing the passenger.

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Abstract

Moulded inner dash trim part for a vehicle comprising a porous fibrous layer comprising fibers and thermoplastic binder, and an air permeable foil laminated together wherein the fibers comprise conjugate frizzy fibers made of at least 2 sides with a difference between the two sides inducing an intrinsic permanent frizzy or curved shape in a random 3 dimensional form, and wherein the air permeablefoil has an airflow resistance that is between 30-75% of the total airflow resistance of the trim part.

Description

technical field [0001] The invention relates to an interior dash panel trim part for a vehicle, in particular a motor vehicle, and to a method for producing such a trim part. Background technique [0002] Interior dash trim components for vehicles, such as automobiles, are well known in the art. These trim parts act as sound insulators and absorbers that reflect and dissipate noise, thereby reducing the overall interior noise level in the vehicle. The inner dash panel is usually made of several layers molded into a three-dimensional shape so as to follow the shape of the vehicle body when installed in the vehicle. [0003] Inner dash insulators having an absorbent layer combined with a perforated foil are known in the art; however, the performance of the foil is limited. [0004] These decorative parts may comprise textile felt layers, however the use of such felt layers according to the prior art has limitations. In particular, the felt tends to reduce its thickness duri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B5/02B32B7/12B32B27/08B32B27/12B32B27/28B32B27/30B32B27/36B32B27/40B32B3/08B32B3/26B60R13/08G10K11/168
CPCB32B5/02B32B5/022B32B7/12B32B27/08B32B27/12B32B27/281B32B27/285B32B27/286B32B27/288B32B27/306B32B27/36B32B27/40B32B3/08B32B3/266B60R13/08G10K11/168B32B2262/0253B32B2262/0261B32B2262/0276B32B2262/062B32B2262/10B32B2262/101B32B2262/106B32B2262/12B32B2262/14B32B2264/02B32B2307/102B32B2307/718B32B2307/724B32B2605/003B32B5/26B32B27/32B32B2605/08
Inventor 马尔科·塞皮
Owner AUTONEUM MANAGEMENT AG