ZÜNDELEMENT, VORZUGSWEISE MIT LANGER VERZÖGERUNGSZEIT

Where layered ignition elements with long delay times are concerned, malfunctions occur above all when aggravating secondary conditions (such as, for example, a high projectile rotation and/or temperature and shock stresses) are additionally involved. The reliable progress of the reaction is assisted if, as seen in the direction of propagation of the reaction, the middle region of the charge (8) igniting the delayed-action composition (3) projects into the middle region of the delayed-action composition (3). A further improvement can be achieved if, instead of an ignition charge (2), one or more transmission charges (7, 8) are interposed and the selection of the charge components is made in such a way that the jumps of the property values (especially as regards the reaction speed) become more uniform and therefore smaller, or an ignition charge having an especially low reaction speed is used.