Multilayered structure for ballistic protection

Abstract

A rigid structure for ballistic protections is described. The structure comprises a plurality of textile elements which are distinct from each other and co-operate with each other to stop an incident bullet along a direction. A third element is placed between two of the textile elements. Such third element is aimed at creating a discontinuity surface between the two adjacent elements, which provides a further reduction of the trauma value and increase of the stopping capability.

1 . A structure for rigid ballistic protections, comprising a plurality of textile elements, which are distinct from each other and which co-operate with each other to dissipate energy associated to impact of an incident bullet along a direction, the structure comprising a third element between a first textile element and a second textile element, the third element forming a discontinuity layer between the first textile element and the second textile element. 
     
     
         2 . The structure as claimed in  claim 1 , wherein the third element is made of compressible material, whose hardness value is lower with respect to the hardness of each textile element of the plurality of textile elements. 
     
     
         3 . The structure as claimed in  claim 2 , wherein the third element is made of one of: elastomeric polymer foams, plastomerics, thermosetting silicones and mixtures thereof as films, nets, felt, honeycomb structures, and rubber. 
     
     
         4 . The structure according to  claim 1 , wherein at least one of the textile elements includes fibers capable of dissipating a part of the energy associated to the impact of the incident bullet modifying the crystalline phase and inducing a physical state transition. 
     
     
         5 . The structure as claimed in  claim 4 , wherein said fibers capable of dissipating include polyethylene UHMW fibers. 
     
     
         6 . The structure according to  claim 1 , further comprising a fourth element, made of compressible material, situated behind the plurality of textile elements. 
     
     
         7 . The structure according to  claim 1 , wherein a first element of the plurality of textile elements is situated in front of the other elements of the plurality of elements with respect to the direction of the incident bullet and constitutes at least 60% of the total weight of the structure. 
     
     
         8 . The structure according to  claim 1 , further comprising at least one ceramic element arranged externally with respect to and before said plurality of textile elements along the direction of the incident bullet. 
     
     
         9 . The structure as claimed in  claim 8 , wherein said at least one ceramic element is made of ceramics based on carbide oxides and/or nitrides. 
     
     
         10 . The structure according to  claim 1 , wherein at least one of the textile elements is impregnated with thermoplastic, thermosetting, or elastomeric polymers, or a combination thereof. 
     
     
         11 . A rigid ballistic protective article, comprising the structure according to  claim 1 .