A multi-layer body armor plate includes a strike plate; a mesh layer positioned over the strike plate, the mesh layer having a number of open cells; and an outer skin layer positioned over the mesh layer so as to encapsulate the open cells of the mesh layer between the strike plate and the outer skin layer. The open cells of the mesh layer may entrap air or may be filled with expandable, buoyant foam.

A puncture-proof structure of the present invention comprises at least two first fiber layers, an intermediate layer and at least two second fiber layers, which are stacked in sequence. A first fiber layers includes a plurality of first woven fibers having a plurality of first gaps therebetween. Another of the first fiber layers includes a plurality of first fibers, and the plurality of first fibers is arranged to be overlapped to enclose the plurality of first gaps. A second fiber layers includes a plurality of second woven fibers, and the plurality of second woven fibers having a plurality of second gaps therebetween. Another of the second fiber layers includes a plurality of second fibers, and the plurality of second fibers is arranged to be overlapped to enclose the plurality of second gaps. By such arrangement, the puncture-proof structure can achieve the effect of preventing the front and back from being punctured.

A lightweight armor system providing blast protection and ballistic protection against small arms fire, suitable for use in helmets, personnel or vehicle protection, and other armor systems. A hard substrate is coated on the front surface with a thin elastomeric polymer layer, in which hollow ceramic or metal spheres are encapsulated. The coating layer having a thin elastomeric polymer layer with encapsulated metal or ceramic hollow spheres can be stand-alone blast protection, or can be added to an underlying structure. The glass transition temperature of the polymer is preferably between negative fifty Celsius and zero Celsius.

A hybrid-layered cell for a bulletproof structure includes a viscose absorber layer, a first elastic metal layer, a visco-elastic foundation layer and a second elastic metal layer, orderly arranged in a lamination manner. The viscose absorber layer contains a semi-liquid viscous material. The first elastic metal layer, laminated fixedly to the viscose absorber layer, has a first predetermined toughness. The visco-elastic foundation layer, laminated fixedly to the first elastic metal layer by opposing the viscose absorber layer, has predetermined elasticity and compressibility. The second elastic metal layer, laminated fixedly to the visco-elastic foundation layer by opposing the first elastic metal layer, has a second predetermined toughness. In addition, the first predetermined toughness is higher than the second predetermined toughness.

A bulletproof protection elementary component of the tile type comprises a prism-shaped body having a first face and a second face of greater extension, which are opposite each other, and a side surface having a first height, at least one raised section from the first face by a second height, wherein the raised section is prism-shaped and has a base area which is less than an area of the first face. A ballistic panel and a bulletproof protection structure and a bulletproof vest, comprising a plurality of the elementary components, are also herein described.

Disclosed herein are engineered composite materials suitable for applications that can benefit from a composite material capable of interacting with or responding to, in a controlled or pre-determined manner, changes in its surrounding environment. The composite material is generally includes a gradient layer structure of a sequence of at, e.g., three or more gradient-contributing layers of microscale particles, wherein a mean particle size of particles of neighboring gradient-contributing layers in the cross section of the gradient layer structure varies from layer to layer, thereby forming a particle size gradient, and in contact with the gradient layer structure, a densely packed particle structure including densely packed microscale particles, wherein a mean particle size of the densely packed microscale particles does not form a particle size gradient in the cross section of the densely packed particle structure.

The invention relates to a ballistic layer for a ballistic multilayer arrangement (1), wherein it is formed by an absorption layer (2, 2a, 2b) that entirely or largely comprises expanded glass (21) and by a ballistic multilayer arrangement (1) with an impact side (A) and a back side (B), wherein at least one of the layers is formed by such an absorption layer (2, 2a, 2b) that entirely or largely comprises expanded glass (21).

There is provided a composite structure, comprising a protective structure comprising a plurality of ballistic layers arranged as a stack; and an ancillary structure adjacent to the protective structure adapted to at least partly absorb a force acting on the protective structure. The ancillary structure comprises at least one first layer comprising an aerogel arranged to at least partly absorb a force acting on the protective structure. A part of each ballistic layer is moveable relative to at least one adjacent ballistic layer and wherein a part of each ballistic layer is connected to at least one adjacent ballistic layer so as to restrict relative movement of a part of each of the adjacent ballistic layers.

The invention relates to a method for producing a body armor with several armor elements (4) that are connected to one another, wherein the method comprises the following steps: a) supply of an armor blank (2) with at least two armor elements (4) which are connected to one another or in a fixed position relative to one another, b) reshaping of the armor blank (2) in at least one reshaping direction such that the at least two armor elements (4) are reshaped, c) separation of the at least two connected armor elements (4) from one another and d) flexible connection of the separated armor elements (4).

A multi-threat protection composite containing at least 10 textile layers having an upper and lower surface and a non-blocking pressure sensitive adhesive (NonB-PSA) composition on at least the upper surface of each layer. The NonB-PSA coating contains a pressure sensitive adhesive and a plurality of first inorganic particles, wherein the ratio by weight of the inorganic particles to the pressure sensitive adhesive is greater than about 1.2 and wherein the NonB-PSA coating is in an amount of at least about 10 g/m.sup.2 on each surface the NonB-PSA coating is located. The first inorganic particles have a median primary particle size of less than about 5 micrometers.