Ballistic-resistant article

Details Ballistic-resistant article Ballistic-resistant article

F - Mech Eng,Light,Heat,Weapons

41

H

F41H 5/04 (2006.01)

Patent

CA 2551801

The invention relates to a preformed sheet comprising at least two mono- layers, each mono-layer containing unidirectionally oriented fibers having a tensile strength of at least about 1.2 GPa and a tensile modulus of at least 40 GPa, and a binder, with a fibre direction in each mono-layer being rotated with respect to the fibre direction in an adjacent mono-layer, and a separating film on both outer surfaces, characterized in that the separating film has a porosity of between 40 and 90 %. With this preformed sheet assemblies and articles offering a substantially higher ballistic protection level at a certain weight can be obtained. The invention further relates to an assembly of at least two such sheets and to a flexible ballistic-resistant article comprising said assembly.

L'invention a trait à une feuille préformée, qui comporte : au moins deux monocouches, dont chacune contient des fibres à orientation unidirectionnelle présentant une résistance à la traction d'au moins 1,2 GPa environ et un module d'élasticité en traction d'au moins 40 GPa, et un liant, le sens des fibres de chaque monocouche étant tourné par rapport au sens des fibres d'une monocouche adjacente ; et un film de séparation placé sur les deux surfaces extérieures, caractérisé par une porosité comprise entre 40 et 90 %. Ladite feuille préformée permet d'obtenir des ensembles et des articles garantissant un niveau de protection balistique sensiblement plus élevé. L'invention a également trait à un ensemble constitué d'au moins deux desdites feuilles et à un article pare-balles souple intégrant ledit ensemble.

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