The disclosure provides a ballistic helmet and a method of assembling a ballistic helmet that includes a helmet shell and a harness connected to the helmet shell. The helmet shell includes a front portion and a rear portion. The harness includes a nape pad, a tensioner disposed on the nape pad, a plurality of securement straps, and a tension cable. The plurality of securement straps are connected to the nape pad and are configured to fasten to the rear portion of the helmet shell. The tension cable is selectively adjustable by the tensioner and is configured to fasten to the front portion of the helmet shell.

A method of fabricating a polymer composite material by mixing a polymer material with a planar material, depositing the mixture on a substrate, and stretching the resulting thin film, is described. Polymer composite materials produced using said method and ballistic resistant materials comprising said polymer composite materials are also described.

A ballistic protective helmet including a helmet dome formed from a metal material, wherein the helmet dome has an inside facing the head of the wearer and an opposite outside. The ballistic protective helmet further includes a layer arranged on the outside of the helmet dome, which layer is formed from a fiber composite material.

A ballistic protective helmet including a helmet dome formed from a metal material, wherein the helmet dome has an inside facing the head of the wearer and an opposite outside. The ballistic protective helmet further includes a layer arranged on the outside of the helmet dome, which layer is formed from a fiber composite material.

Composite sheets include at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, the fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein the homopolymer or copolymer of ethylene has a density as measured according to ISO1183 of between 870 to 980 kg/m.sup.3. The composite sheets have an areal density of between 50 and 500 g/m.sup.2, wherein the composite sheets have an areal density normalized in-plane shear force measured at 25° C. evaluated according to a bias extension test method variant of ASTM D3518 of at least 0.40 N.Math.m.sup.2.Math.g.sup.−1 and lower than 5.0 N.Math.m.sup.2.Math.g.sup.−1 at 10 mm clamp displacement and an areal density normalized in-plane shear force measured at 110° C. and clamp displacement of 10 mm of at least 0.01 N.Math.m.sup.2.Math.g.sup.−1 and lower than 0.20 N.Math.m.sup.2.Math.g.sup.−1.

The invention relates to a three dimensional shaped article having an outer and inner surface, the outer surface comprising at least one fabric (100) of polyethylene fibers having a tensile strength of at least 1.5 GPa, the fabric is impregnated with an acrylic based thermoplastic material. The three dimensional shaped article may further comprise monolayers with unidirectional aligned fibers. The three dimensionally shaped article has an improved surface appearance which would therefore need little or no post treatment and has good adhesion to coatings and paints.

The invention relates to a composite sheet comprising at least two adjacent fibrous monolayers of unidirectionally aligned high tenacity polyethylene fibers, whereby the direction of orientation between the polyethylene fibers of said two fibrous layers differs by at least 80° and up to 90°, the fibers having a tenacity of at least 1.5 N/tex, said fibers being in a matrix comprising a homopolymer or copolymer of ethylene and wherein said homopolymer or copolymer of ethylene has a density as measured according to IS01183 of between 870 to 980 kg/m.sup.3, said composite sheet having an areal density of between 50 and 500 g/m.sup.2 wherein the composite sheet has an areal density normalized in-plane shear force measured at 25° C. evaluated according to the bias extension test method of at least 0.40 N.Math.m.sup.2.Math.g-1 at 10 mm clamp displacement.

The disclosure provides a ballistic helmet that includes a helmet shell and a harness connected to the helmet shell. The helmet shell includes a front portion and a rear portion. The harness includes a nape pad, a tensioner disposed on the nape pad, more than one securement strap, and a tension cable. The more than one securement strap is connected to the nape pad and is configured to fasten to the rear portion of the helmet shell. The tension cable is selectively adjustable by the tensioner and is configured to fasten to the front portion of the helmet shell.

A ballistic helmet comprising a ballistic shell, wherein within the thickness of the ballistic shell, or inside the ballistic shell, there is provided one or more circuit layers forming a circuit, which circuit comprises a power bus and a data bus, and wherein one or more power connections and one or more data connections are provided on the inside and/or on an edge of the ballistic shell for providing power and data to/from one or more electrical devices through the circuit.

A ballistic helmet comprising a ballistic shell, wherein within the thickness of the ballistic shell, or inside the ballistic shell, there is provided one or more circuit layers forming a circuit, which circuit comprises a power bus and a data bus, and wherein one or more power connections and one or more data connections are provided on the inside and/or on an edge of the ballistic shell for providing power and data to/from one or more electrical devices through the circuit.