Ballistic vest

摘要

The invention relates to a ballistic vest comprising a stack of flexible unidirectional layers in which the unidirectional layers contain polyphenylene benzobisoxazole (PBO) fibers and in which the fibers in a unidirectional layer run substantially parallel and are positioned at an angle of more that 0 degrees relative to fibers in an adjacent layer, wherein the PBO fibers are as-spun PBO fibers which preferably have a modulus of less than 1300 cN/dTex.