Patent ID: 7153790

Claim:
A penetration-resistant material comprising at least a double layer of woven fabric wherein the double layer comprises a first layer of fabric and a second layer of fabric, wherein the first layer of fabric is composed of a first set of threads comprising 3.5 to 20 threads/cm, having a linear density of at least 210 dtex, and comprising at least 65% of the first layer fabric weight, and a second set of threads comprising 0.5 to 16 threads/cm and having a linear density of at least 50 dtex, with the second set of threads being transverse to the first set of threads, and a ratio of the number of threads/cm of the first set to that of the second set is greater than 1:1, wherein the second layer of fabric is composed of a first set of threads comprising 0.5 to 16 threads/cm and having a linear density of at least 50 dtex, and a second set of threads comprising 3.5 to 20 threads/cm, having a linear density of at least 210 dtex, and comprising at least 65% of the second layer fabric weight, with the second set of threads being transverse to the first set of threads, and a ratio of the number of threads/cm of the second set to that of the first set is greater than 1:1, wherein the first and second sets of threads of the first layer have a parallel orientation towards the first and second sets, respectively, of threads of the second layer, and wherein in the first layer of fabric at least the first set of threads, and in the second layer of fabric at least the second set of threads, are treated with a water-repellant, wherein the resulting treated threads have a water-repellant finish that is retained with the treated threads in the woven fabric.