Composite article made with unidirectional fibre reinforced tape

Inactive Publication Date: 2013-06-13
EI DU PONT DE NEMOURS & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]It is an object of the invention to provide a method of forming an article from or with unidirectional tape th

Problems solved by technology

The heating and subsequent cooling process is time-consuming and occupies the tape winding and forming machine, thus resulting in a costly manufacturing process.
One of the drawbacks of the latter process is the difficulty of properly holding and positioning the assembled layers together, especially when transporting the assembly f

Method used

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  • Composite article made with unidirectional fibre reinforced tape
  • Composite article made with unidirectional fibre reinforced tape
  • Composite article made with unidirectional fibre reinforced tape

Examples

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Example

[0052]Referring to FIGS. 8a to 8c, an example of a composite article 4 is shown, the article in this example representing a vehicle suspension arm or control rod. The article comprises a consolidated fibre reinforced part 37 forming a closed loop, an overmolding 42 and optionally one or more inserts 40. The consolidated fibre reinforced part 37 is made from a wound unidirectional tape preform 38 made using a process according to embodiments of the invention that are described further on. Composite articles according to the invention may be formed uniquely from unidirectional tape, or from a unidirectional tape combined with inserts, overmolding, and other elements mounted to or around the wound UD tape preform. In the illustrated example of FIGS. 8a to 8c, the overmolding 42 may for example be an injected polymer, and the one or more inserts could be made of various materials, for example an insert made of a metal, composite material, or of a ceramic, depending on the application an...

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Abstract

Disclosed is a method of forming an article from a unidirectional (UD) tape comprising a continuous unidirectional fibre impregnated with polymer resin. The method includes winding a continuous section of cold UD tape to form a closed loop preform (38) comprising a plurality of stacked layers while discretely welding and consolidating the wound preform by heating and applying pressure.

Description

[0001]The present invention relates to a method of forming a composite article from unidirectional fibre reinforced tape.CROSS REFERENCE TO RELATED APPLICATIONS[0002]This application claims the benefit of U. S. Provisional Application No. 61,567,801, filed Dec. 7, 2011, now pending, the entire disclosure of which is incorporated herein by reference.FIELD OF THE INVENTIONBackground of the Invention[0003]Unidirectional tape is commonly understood to be a thin strip or band of continuous unidirectional fibres (for instance glass fibres, carbon fibres, or other known reinforcing fibres) impregnated with a polymer resin. The tape may typically have a width in the order of magnitude of 1 to 15 cm wide, perhaps wider, and a thickness of less than 1 mm, such that the tape may be provided on a reel.[0004]In a conventional process, it is known to form a composite article with a loop-shaped fibre reinforcement by winding unidirectional fibre reinforced tape around a shape-forming element, the ...

Claims

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Application Information

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IPC IPC(8): B29C53/56B32B5/28
CPCB29C53/56Y10T428/24132B29L2031/06B29C65/08B29C65/10B29C65/14B29C65/1412B29C65/1448B29C65/1464B29C65/18B29B11/16B29C65/7841B29C65/7855B29C66/0242B29C66/1122B29C66/21B29C66/4322B29C66/4324B29C66/49B29C66/71B29C66/7212B29C53/562B29C65/02F16C7/026B29C66/72141B32B5/28B29C70/386B29K2023/12B29K2067/00B29K2077/00B29K2305/00B29K2309/02B29K2309/08B29K2307/04B29L2031/7172B29K2081/04B29K2079/085B29K2067/006B29K2067/003B29K2021/003
Inventor WAKEMAN, MARTYN DOUGLASNORREY, CRAIG
Owner EI DU PONT DE NEMOURS & CO
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