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Method for manufacturing unidirectional short fiber fabric having important width

A production process and short fiber technology, applied in the field of unidirectional short fiber cloth, can solve problems such as unsatisfactory

Pending Publication Date: 2018-06-29
FAURECIA AUTOMOTIVE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This width is not enough to realize the needs of unidirectional fiber cloth for industrial use, such as the production of car safe panels with dimensions of 1.2mx 1.4m

Method used

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  • Method for manufacturing unidirectional short fiber fabric having important width
  • Method for manufacturing unidirectional short fiber fabric having important width
  • Method for manufacturing unidirectional short fiber fabric having important width

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Experimental program
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Embodiment Construction

[0042] In this specification, when the length of the fiber is less than 500 mm, it can be called as short fiber. Preferably, the length of the short fibers contained in the cloth 10 should be less than 300 mm, such as less than 150 mm. Preferably, the length of the short fibers should be greater than 10 cm.

[0043] The fibers of the cloth 10 preferably comprise natural fibers such as flax, hemp, jute, sisal, or a blend of natural fibers. As a variant, the fibers of said cloth 10 may also comprise synthetic or man-made fibres, at least in part.

[0044] The fibers of the cloth 10 contain a portion of low-melting fibers, ie are increasingly melted when reaching a predetermined melting point. More particularly, the cloth 10 contains 2%-70% low-melting fibers. For example, when the cloth 10 is specified for the production of thermoplastic molding composite cloth, the percentage of low-melt fiber should be 50%-70%.

[0045] More particularly, when the low-melting fiber is only...

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Abstract

The manufacturing method comprises a step of producing a plurality of short fiber-based ribbons comprising between 2% and 70% of fusible fibers, a step of rolling the plurality of ribbons arranged side by side in a combing / stretching device in order to obtain an intermediate fabric, a step of heating the intermediate fabric at a temperature greater than or equal to the melting temperature of thefusible fibers, in order to obtain cohesive fabrics (10d) after cooling, and a assembly step of at least two cohesive fabrics (10d) side by side, with an overlap (38) on one another, and then heatingthe assembly to ensure the cohesion between the two cohesive fabrics (10d).

Description

technical field [0001] This invention relates to the production of a unidirectional staple fiber cloth. Background technique [0002] Unidirectional fiber cloth is a cloth whose fibers are completely parallel to each other. [0003] Unidirectional fiber cloth is generally used in the production of composite materials. In particular, the parallelism between the fibers allows for a lower porosity in the final composite. In fact, the unidirectional fiber cloth can be compressed substantially in such a way that the optimal density is achieved, so that the composite mold occupies all the spaces between the fibers. Therefore, the performance of composite molds produced on the basis of unidirectional fiber cloth is particularly satisfactory. [0004] In this technical field, especially after FR2982283, the existing technology is a unidirectional fiber production process. This process is especially suitable for long fibers, especially "linen" draw-die fibers with a length of mor...

Claims

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Application Information

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IPC IPC(8): B29C65/02D04H1/485
CPCB29C65/02D04H1/485B27N3/143B29C70/504B29C70/502B29C70/506D04H1/74
Inventor 泽维尔·巴特利耶玛蒂尔德·勒帕热
Owner FAURECIA AUTOMOTIVE IND