Cross-plied composite ballistic articles

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 2681496

A multilayered composite fabric, the composite fabric comprising a first fabric comprising first and second non-woven unidirectionally oriented fiber layers. Each of the fiber layers is in a resin matrix and the fibers comprise high tenacity fibers. The fibers in the two fiber layers are disposed at an angle with respect to each other. The composite fabric includes a second fabric comprising multi-directionally oriented fibers optionally in a resin matrix. The second fabric also comprises high tenacity fibers. The first and second fabrics are bonded together to form the composite fabric, which has improved ballistic resistant properties. Plastic films may be adhered to one or both outer surfaces of the first fabric and can serve as the bonding agent between the two fabrics. Also described is a method of making a composite fabric.

La présente invention porte sur un tissu composite multicouche, le tissu composite comprenant un premier tissu comprenant des première et seconde couches de fibre non tissées orientées unidirectionnellement. Chacune des couches de fibre se trouve dans une matrice résineuse et les fibres comprennent des fibres haute ténacité. Les fibres des deux couches de fibre sont disposées en formant un angle les unes par rapport aux autres. Le tissu composite comprend un second tissu comprenant des fibres orientées multidirectionnellement qui, facultativement, se trouvent dans une matrice résineuse. Le second tissu comprend également des fibres haute ténacité. Les premier et second tissus sont unis ensemble pour former le tissu composite qui a de meilleures propriétés de résistance balistique. Des films plastiques peuvent être collés à l'une des surfaces, ou aux deux surfaces externes du premier tissu, et peuvent servir comme agent de liaison entre les deux tissus. La présente invention porte également sur un procédé de fabrication d'un tissu composite.

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