In a workshop devoted to producing filmed cards of plastic caps for a toy gun, a case of caps ignited in the machine loading zone. This ignition was revealed by flames reaching 50 cm to 1 m high with small projectiles of melted plastic over a 2-m radius around the case. Two people sustained slight burns. Friction caused this case of caps to activate. The safety analysis conducted at the workstation would be examined to identify more efficient means of protection.