| 摘要 |
<p>A laminar element (16) for use as a target face is composed of non-woven polymer fibres compressed and bonded to form a single layer of penetrable material which is resistant to water and dimensionally stable over a wide range of temperatures, flexible non-deformable and printable. Target indicia are formed on one face by any one of a wide range of printing techniques. The polymer may be TYVEK (Tm) by Dupont, Kevlar (Tm) or carbon fibre.</p> |
