Patent 8008217 was granted and assigned to E.I. Du Pont De Nemours And Company on August, 2011 by the United States Patent and Trademark Office.
A penetration resistant article with an area density less than 1.5 lb/ft2 made of a plurality of fibrous fabric layers that have applied thereto about 1 to 8 percent by weight of a polymer having a glass transition temperature in the range of minus 40 to about 0° C. and a zero shear melt viscosity 2×106 to about 1013 poise at 20° C.