Hard-ballistic article and process to manufacture said article

Abstract

A hard-ballistic article and a method to manufacture the article are provided. The hard ballistic article includes a hybrid panel, wherein the hybrid panel includesa) a first package of a plurality of consolidated cross-plies, wherein each consolidated cross-ply contains at least two layers of unidirectional aligned aramid fibers, wherein the aramid fibers are provided with a first matrix material, wherein the first matrix material includes a first polymer, wherein the first package exhibits a surface facing to the direction of a ballistic attack and a surface facing away from the direction of the ballistic attack, and(b) a second package containing a plurality of woven fabric layers, wherein the woven fabric layers include aramid fibers provided with a second matrix material, wherein the second matrix material is different from the first matrix material, wherein the second matrix material comprises a second polymer, wherein the second polymer is different from the first polymer,wherein the first package is bonded with its surface facing away from the direction of the ballistic attack with the second package.

Description

BACKGROUND[0001]1. Field Of The Application[0002]The present application pertains to a hard-ballistic article and to a process to manufacture said article.[0003]2. Related Art[0004]Hard-ballistic articles are known which contain packages of woven fabric layers or packages of non-woven fabric layers. Said packages are stacked onto one another to form a monolithic panel. Furthermore, hard-ballistic articles are known which contain packages of woven fabric layers and packages of non-woven fabric layers. Said packages are stacked onto one another to form a hybrid panel.[0005]WO 2008 / 097362 A describes multilayer ballistic resistant articles which provide suitable protection against high energy ballistic threads, while remaining suitable for flexible vest applications. Said multilayer ballistic resistant articles are formed from a combination of flexible and semi-rigid panel components. The flexible or semi-rigid panels may include woven fibrous layers, non-woven fibrous layers or both. ...

AI Technical Summary

Benefits of technology

The patent text addresses the need for better ballistic performance in ballistic articles with the same areal density. The technical problem to be solved is to provide a hard-ballistic article that exhibits better ballistic performance at the same areal density.

Problems solved by technology

US 2012 / 0174753 A1 describes soft body armor and explains that the flexible and soft body armor of the application of this document is in contrast to rigid or hard armor and therefore, does not retain its shape when subjected to a significant amount of stress and is incapable of being free standing without collapsing.

Therefore, the problem underlying the present application is to provide a hard-ballistic article which at the same areal density exhibits a better ballistic performance.