| 摘要 |
PCT No. PCT/NL93/00078 Sec. 371 Date Oct. 3, 1994 Sec. 102(e) Date Oct. 3, 1994 PCT Filed Mar. 31, 1993 PCT Pub. No. WO93/20271 PCT Pub. Date Oct. 14, 1993The invention relates to a non-woven layer that consists substantially of short polyolefin fibers the nonwoven layer being a felt with in the plane of the layer substantially randomly oriented fibers with a length of 40-100 mm, a tensile strength of at least 1.2 GPa and a modulus of at least 40 GPa. The invention also relates to a method for the manufacture of this felt and to layered structures in which the felt is used. Layered structures comprising a non-woven layer according to the invention have improved specific energy absorption on impact of ballistic projectiles. |
