g d 44 4 g dtex a tensile modulus of 1632 g d 1468 g dtex and an elongation at break of 3 3 the yarn of the invention had an intrinsic viscosity of 15 1 dl g the iv of the yarn of the invention was 46 of the iv of the uhmwpe from which it was spun infra red absorbance ratios were measured for this yarn of the invention and for four prior art uhmwpe fibers the results are shown in table i and in fig2 5 it will be seen that the yarn of the invention satisfied each of the following relationships it will also be seen that the ratio of the carbonyl vinyl absorbances a 1720 a 910 for the yarn of the invention was less than 1 07 and less than the corresponding ratio for the prior art materials without being held to a particular theory it is believed that the process of the invention in comparison to prior art processes causes a greater degree of thermal mechanical chain scission as opposed to oxidative chain scission the inventive yarn described in example 1 above was used to construct articles of the invention comprising cross plied fiber reinforced laminates several rolls of the inventive yarn of example 1 were supplied from a creel and were passed through a combing station to form a unidirectional network the fiber network was passed over and under stationary bars to spread the yarns into thin layers the fiber network was then carried under a roll immersed in a bath of an cyclohexane solution of a kraton u00ae d1107 styrene isoprene styrene block copolymer matrix to completely coat each filament the coated fiber network was passed through a squeeze roll at the.