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Form-stable composite material with a layer of fiber-reinforced recycled ground material

A composite material and material layer technology, applied in the field of composite materials, can solve problems such as high price, poor sound absorption ability, and reduced sound emission

Active Publication Date: 2018-01-19
ROECHLING AUTOMOTIVE SE & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] A disadvantage of the disclosed composite material having at least one layer of fiber-reinforced recycled ground material is its poor sound absorption capacity
This makes it unsuitable for use in noise-reducing applications in which a reduction in sound emission is desired and where expensive composite materials have also to be used from the first production

Method used

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  • Form-stable composite material with a layer of fiber-reinforced recycled ground material

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Embodiment Construction

[0041] exist figure 1 Shown in is a cross-sectional view of an embodiment of the shape-stable composite material of the present invention, generally designated 10 . The composite material 10 comprises a first and a second flexible layer 12 or 14, which are respectively produced as nonwoven layers in the example shown. The non-woven layers 12 and 14 can each have different fibers, for example thermoplastic bonding fibers 16 made of polyolefins, in particular polypropylene, and thermoplastic bonding fibers 16 made of heat-shrinkable bonding fibers 16. Reinforcing fibers 18 of a dimensionally stable material in the case of temperature. For example, the reinforcing fibers 18 may consist of polyethylene terephthalate.

[0042] As a supplement or alternative to the nonwoven layers 12 and 14, the flexible layers 12 and 14 can have other or additional layers, for example a solid plastic film or / and a metal foil, in particular a Microporous aluminum foil.

[0043] Between the flexi...

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Abstract

The invention relates to a form-stable composite material (10) with two flexible layers (12, 14), between which is accommodated a layer (20) with fiber-reinforced recycled ground material, comprisingthermoplastically bound fibers (26), wherein grains of the ground material (22, 24) are firmly bonded to one another and to the flexible layers (12, 14), the layer (20)of ground material being porous.

Description

technical field [0001] The invention relates to a dimensionally stable composite material having two flexible layers between which is accommodated a layer of fibre-reinforced recycled ground material comprising thermoplastically bonded fibres, wherein the ground material The particles are bonded to each other and to the flexible layer in a material-fit manner. Background technique [0002] Such a composite material is known, for example, from DE 10 2005 029 229 A1. This publication discloses panels of long glass fiber reinforced polypropylene ground material within which the long glass fiber reinforced polypropylene ground material is positioned between two layers of nonwoven mats. The laminate consisting of non-woven mats and ground material arranged in between is conveyed to a hot press, where all molten material is partially melted, pressed and compacted. The result is thus a solid, air-entrapped plate in which the nonwoven mat, which is initially located on the outside...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/06B32B17/10B32B3/24B32B37/04
CPCB32B5/26B32B27/12B32B15/082B32B15/14B32B27/08B32B5/022B32B2262/101B32B2262/02B32B2262/10B32B2260/021B32B2260/046B32B2250/03B32B2250/40B32B5/18B32B15/04B32B2305/70
Inventor 克劳斯·普法费尔胡贝尔丹尼斯·施罗特克里斯坦·阿尔特赖因哈德·维尔特埃哈德·勒姆布鲁克
Owner ROECHLING AUTOMOTIVE SE & CO KG
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