Ballistic vest

Details Ballistic vest Ballistic vest

F - Mech Eng,Light,Heat,Weapons

41

H

F41H 5/04 (2006.01)

Patent

CA 2399538

The invention relates to a ballistic vest containing a stack of flexible fabrics and a stack of flexible unidirectional layers, in which the fabrics contain strong fibres of a first kind, the unidirectional layers contain strong fibres of a second kind, and in which the fibres in a unidirectional layer run essentially parallel and are disposed at an angle to fibres in an adjacent layer which is greater than 0 degrees, where in that the flexible fabric is a loose fabric and is located on the strike side of the vest. The percentages by weight of the loose fabrics and the stack of UD layers preferably is between 15:85 and 30:70 %. In that case, a vest of area] density less than 6 kg/m2 can have such ballistic resistance as to stop an Action 3 bullet with a velocity of up to 437 m/s with a trauma to NIJ Standard of less than 44 mm.

L'invention concerne un gilet balistique constitué d'un empilement de tissus flexibles et d'un empilement de couches flexibles unidirectionnelles, les tissus renfermant des fibres robustes d'un premier type, et les couches unidirectionnelles renfermant des fibres robustes d'un second type. Les fibres d'une couche unidirectionnelle sont essentiellement parallèles et forment avec les fibres d'une couche adjacente un angle supérieur à 0 DEG . Le tissu flexible est un tissu lâche situé sur le côté impact du gilet. En poids, les pourcentages de tissu lâche et d'empilement de couches unidirectionnelles sont compris de préférence entre 15:85 and 30:70 %. Dans ces conditions, un gilet de densité de surface inférieure à 6 kg/m<2> peut avoir la résistance balistique requise pour stopper une balle de type Action 3 circulant à une vitesse qui peut atteindre 437 m/s en recevant une marque d'impact inférieure à 44 mm, aux normes NIJ.

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