Composite ballistic fabric structures

B - Operations – Transporting – 32 – B

Patent

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B32B 5/26 (2006.01) B23B 5/28 (2006.01) F41H 5/04 (2006.01)

Patent

CA 2681554

A multilayered composite fabric which comprises (a) a first fabric comprising non-woven unidirectionally oriented fibers in a first resin matrix, the fibers comprising high tenacity fibers, the first fabric comprising first and second surfaces; and (b) a second fabric comprising multi-directionally oriented fibers optionally in a second resin matrix, the second fabric also comprising high tenacity fibers, the second fabric having first and second surfaces, the first surface of the second fabric being bonded to the second surface of the first fabric thereby forming the composite fabric. Also described is a method of making such fabric wherein the second fabric layer is used as a support during the manufacturing process and is thereafter consolidated into a single structure with the first fabric layer.

L'invention concerne un tissu composite multicouche comprenant : (a) un premier tissu comportant des fibres non tissées orientées de manière unidirectionnelle comprises dans une première matrice de résine, lesdites fibres comprenant des fibres hautement résistantes et le premier tissu comprenant une première surface et une seconde surface; et (b) un second tissu comportant des fibres orientées de manière multidirectionnelle éventuellement comprises dans une seconde matrice de résine, ces secondes fibres comprenant également des fibres hautement résistantes et le second tissu comprenant une première surface et une seconde surface. La première surface du second issu est collée sur la seconde surface du premier tissu pour former un tissu composite. L'invention concerne également un procédé de fabrication d'un tel tissu dans lequel la seconde couche de tissu est utilisée comme support pendant le processus de fabrication, puis est ensuite consolidée pour former une structure unique avec la première couche de tissu.

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