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Flexible multilayer compressed air conduit

一种塑料管材、内层的技术，应用在层压、刚性管、层压装置等方向，能够解决没有展示操作实施例、无法再现性能等问题

Active Publication Date: 2019-08-20
EMS PATENT AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No specific operational examples are shown, instead only a general listing is given, so the performance of the proposed structure cannot be reproduced

Method used

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  • Flexible multilayer compressed air conduit
  • Flexible multilayer compressed air conduit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0057] figure 1 An exemplary compressed air pipe 1 according to the invention is shown in a sectional view transverse to the main path direction.

[0058] The cross-sectional area may be constant in the direction of the main path; in other words, the tube may have a substantially hollow cylindrical shape.

[0059] Alternatively, for example, the cross-sectional area may vary in the direction of the main path in the form of a bellows.

[0060] The interior 2 is surrounded by pipe walls. Radially outwards, the inner portion 2 is first followed by the inner layer 3 whose inner side 7 adjoins the inner portion 2 and delimits the inner portion. The inner layer is formed on the basis of a mixture of polyamide 12 and polyamide 612, without other different polyamide components.

[0061] The layer directly adjoining the inner layer 3 without the adhesion promoter in between is followed by the middle layer 4 , which is formed on the basis of polyamide 612 without other different poly...

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Abstract

Plastics line consisting of three layers, an inner layer (3) bordering the interior (2), a middle layer (4) directly adjoining the inner layer (3), and an outer layer (5) directly adjoining the middlelayer (4), where the inner layer (3) is formed on the basis of a mixture of at least two polyamides selected from the following group: PA12, PA612, PA616, or consists substantially thereof, the middle layer (4) is formed on the basis of PA612 and / or PA616 or consists substantially thereof, the outer layer (5) is formed on the basis of a mixture of at least two polyamides selected from the following group: PA12, PA612, PA616, or consists substantially thereof.

Description

technical field [0001] The invention relates to a multilayer line of thermoplastic material, in particular for compressed air in the automotive industry, to a method for producing such a line and to the use of such a line. Background technique [0002] The use of compressed air pipes based on layered structures made of plastics, in particular polyamides, has been stated in the art for a considerable time. Due to the requirements concerning the bursting pressure strength, especially at high temperatures, and the necessary mechanical properties (e.g. impact toughness, elongation at break), it is preferred here to use materials which exhibit high thermal stability, high length stability, And multi-layer tubes with high pressure resistance at various temperatures. [0003] EP-A-2 842 736 describes a compressed air brake pipe having an outer layer of at least 50% PA11 or PA12; and comprising an inner layer consisting of a molding composition comprising PA to a limit of at least ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/02C08L77/06C08L51/06C08L23/08C08L23/06C08K5/435C08K3/04B32B27/06B32B27/18B32B27/22B32B27/34B32B1/08F16L9/12
CPCC08L77/00C08L77/02C08L77/04B29C49/00B32B1/08B32B27/08B32B27/18B32B27/22B32B27/34B32B37/153B60T13/26B60T17/04C08L77/06F16L11/04F16L9/121B32B2250/03B32B2250/24B32B2250/40B32B2270/00B32B2274/00B32B2307/308B32B2307/4026B32B2307/51B32B2307/558B32B2307/7242B32B2307/734B32B2597/00B32B2605/00B32B2605/08C08L2203/18C08L2205/02C08L2205/035C08L51/06C08L23/0815C08L23/06C08K5/435C08K3/04
Inventor 乔治·施特佩尔曼安德烈·斯图尔塞尔迈克尔·霍夫曼
Owner EMS PATENT AG