Covering element comprising a sound absorbing element

A technology for covering components and components, used in household components, vehicle parts, transportation and packaging, etc., can solve the problem of weight of the final product, and achieve the effect of low cost, strong sound absorption ability, and good acoustic characteristics

Inactive Publication Date: 2009-09-02
VOESTAPLINE POLYNORM PLASTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of fiber-reinforced materials is relatively expensive and further processing of the fiber-reinforced material is necessary, e.g. deburring is necessary
Due to the use of fibers, the final product is also relatively heavy, which is undesirable in certain applications

Method used

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  • Covering element comprising a sound absorbing element
  • Covering element comprising a sound absorbing element
  • Covering element comprising a sound absorbing element

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] Figure 1A A part of the injection mold 1 for producing the covering element 2 is shown. Said mold part comprises a forming part 3 for forming the covering element 2 and also comprises a metal core 4 . Figure 1B The application of an adhesive layer 5 of thermoplastic material, preferably polypropylene, to the shaped part 3 of the injection mold 1 is shown. Such as Figure 1C As shown, the sound absorbing element 6 is arranged on the adhesive layer 5 . Here, it should be noted that in this embodiment, the injection mold is arranged horizontally to facilitate the introduction of the adhesive layer and the sound-absorbing element. However, it is also possible to arrange the injection mold vertically. Next, said mold is preferably provided with means for arranging the adhesive layer and the sound-absorbing elements. Figure 1C The sound absorbing element 6 preferably comprises a polyurethane foam structure. Depending on the position of the covering element on the veh...

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PUM

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Abstract

The present invention relates to a method for manufacturing a covering element (2), comprising of : i) arranging in an injection mould (1) a sound- absorbing element (6) and an adhesive layer (5), such that the adhesive layer extends over at least a part of the inner surface of the sound-absorbing element; ii) introducing thermoplastic plastic material of increased temperature into the mould at increased pressure, wherein the plastic material spreads over substantially the outer surface of the sound-absorbing element and over a part of the adhesive layer; iii) cooling the whole such that the thermoplastic plastic material forms a solid carrier element which is adhered to a part of the adhesive layer and wherein the sound-absorbing element is at least partly enclosed between the carrier element (8) and the adhesive layer, to the covering element and to the use thereof. The present invention further relates to a covering element, whereby the thermoplastic plastic material is not fibre-reinforced.

Description

technical field [0001] The invention relates to a method for producing a covering element, a covering element and the use of the covering element. Background technique [0002] In the design and manufacture of vehicles, especially automobiles, the absorption or reduction of sound produced by the vehicle and of external origin (eg, sound caused by road debris striking the underside of the vehicle) is becoming increasingly important. The reduction of vehicle noise impact has beneficial effects, one of which is improved passenger comfort. Also, passengers don't get tired any faster. Another advantageous effect is the reduction of the noise impact in the vicinity of the vehicle. [0003] However, if so, many parts of the vehicle are made of plastic. This is because using plastic has some advantages over using metal. One of the most important features of using plastics is that components can be produced in a lighter form. Plastic covering elements, i.e. elements that can be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C45/14B32B5/18B32B27/32B60R13/08
CPCB60R13/08B32B27/12B29L2031/3005B29C45/14795B32B2307/102B29C45/14467B29K2995/0002Y10T428/31504
Inventor 罗吉尔·特奥多鲁斯·斯亚多斯·玛丽亚·曼达斯威廉·贝恩斯马丁·杰克布斯·德科宁
Owner VOESTAPLINE POLYNORM PLASTICS
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