improved uniformity of timing, and particularly reduced sensitivity of timing to minor variations in delay charge size, are achieved in delay detonators by placing a loose load of a flame-sensitive ignition composition between a pressed delay charge and an ignition assembly, e.g., a percussion primer, at the actuation end of the detonator. The loose ignition charge has a free surface and is adapted to be ignited in response to direct contact with flame emitted from the ignition of a charge in the ignition assembly. Preferably, the delay charge is pressed into a plastic carrier which, in a non-electric detonator, has an open end terminating between the walls of the detonator shell and a primer shell that closes the actuation end of the detonator, and the ignition charge is loosely loaded into a metal capsule seated against the delay charge.
在延迟雷管中,通过在雷管起爆端压制的延迟装药和点火组件(如撞击底火)之间放置对火焰敏感的点火成分的松散装药,可提高定时的均匀性,特别是降低定时对延迟装药尺寸微小变化的敏感性。松散的点火装药具有自由表面,可在与点火组件中的装药点火时发出的火焰直接接触时被点燃。最好是将延迟装药压入塑料载体中,在非电雷管中,塑料载体的开口端位于雷管壳壁和封闭雷管起爆端的底火壳之间,点火装药松散地装入
金属壳体中,与延迟装药固定在一起。