Method for producing in a TFP method one-or multi-layer layer fibre preforms

A multi-layer fiber, preform technology, applied in chemical instruments and methods, layered products, vehicle parts, etc., can solve problems such as fiber bundle damage, and achieve the effect of convenient detachment or separation

Inactive Publication Date: 2010-09-15
AIRBUS OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] DE 100 61 028 A1 does disclose a method for chemically dissolving or thermally melting the fixing filaments in the fiber preform, but here there is the risk that the fiber bundles will be damaged as a result of tearing off the sewing substrate

Method used

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  • Method for producing in a TFP method one-or multi-layer layer fibre preforms
  • Method for producing in a TFP method one-or multi-layer layer fibre preforms

Examples

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Embodiment Construction

[0062] The method according to the invention and the backing layer according to the invention will be based on figure 1 and figure 2 To be more specific.

[0063] figure 1 shows a cross-sectional view through a fiber preform with a release layer formed by the TFP process.

[0064] The fiber preform 1 has a backing layer 2 therein and a release layer 3 arranged on the backing layer 2 . The release layer 3 is formed, for example, by a thin-layer PTFE film or the like having good non-stick properties.

[0065] In addition, the release layer 3 can also be formed by a film of other polymers (such as polyethylene, polypropylene, etc.) with good non-stick properties. Furthermore, the release layer can be formed by a sheet-like form, for example textile fibers, provided with a release agent, such as a release coating or the like. The release layer 3 can optionally be produced by spraying or applying a non-stick material onto the backing layer 2 , so that in this case the release...

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Abstract

The invention relates to a method for producing, in a TFP method, one- or multilayer fibre preforms (1, 25) substantially comprising fibre strands (4-16) which are oriented in the force flux direction, arranged on a support layer (2) and attached by fixing threads (17) in such a way that the fibre preform (1, 25) having almost any thickness and devoid of the unwanted support layer (2) is formed. According to said invention, a separating layer (3,26) is applied to the support layer (2) at least by sections and, according to the TFP method, said fibre preform (1, 25) is introduced into a fixingdevice (24), wherein at least one part of the fixing thread (17) is molten by supplied heat and the support layer (2) separated from the fibre preform (1, 25) by the separating layer (3,26) is removed therefrom. The support layer for producing the fibre preform (1, 25) and said fibre preform (1, 25) formed by the inventive method are also disclosed.

Description

technical field [0001] The present invention relates to a method for the production of single- or multi-layer fiber preforms by the TFP process ("Tailored Fiber Arrangement") with fiber bundles approximately arranged such that they are oriented by force flow and placed on on the backing layer and connected by fixing wires, in particular, by at least one upper fixing wire and at least one lower fixing wire, so as to form a fiber preform having the actual required material thickness. [0002] The invention also relates to a backing layer for carrying out the method. Background technique [0003] In lightweight construction, in particular in aircraft construction, the use of composite components made of fiber-reinforced plastics, which can withstand extremely high mechanical loads and, at the same time, have great potential for saving weight, is increasingly being used. These parts are formed with reinforcing fibers that are continuously impregnated or impregnated with a curab...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/54B29C70/48B29B11/16D04H13/00B29K105/10
CPCB29B11/16B32B5/12B29K2105/0097B32B2605/18B32B27/322B32B27/08D04H13/00B32B2262/0215B32B27/12B29C70/342B32B5/26B29C70/48B32B5/08B29C70/543B29C70/20B29C37/0075
Inventor 保罗·约恩乌尔里希·艾贝特
Owner AIRBUS OPERATIONS GMBH
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