DETONATING CORD MANUFACTURING LINES
PETN DRIERS
DMP produces remotely controlled PETN driers, operated in an automatic cycle for increased safety.  They are also provided with a special unloading system, which automatically fills the explosive into aluminium bottles at the end of the cycle.  Only after the drying cycle's completion can the operator enter the room and drive a trolley of filled bottles to the spinning machines building.
Our spinning machines are equipped with digital controls (recording all data for quality control) and all the most updated safety devices, able to detect any operating fault immediately, from PETN core missing, to yarns and tapes breaking; the spinning machine automatically stops and informs the operator on the cause of alarm on the diagnostic display of the digital control panel. The machines canbe supplied with different sets of dies according to the requested PETN load up to 100g/m. 
Special Detonation Trap devices are placed between the spinning room and the pulling section in order to avoid the explosion transmission in case of any accident.
 The explosive is fed from a funnel, which is placed in the upper floor for safety purposes.  The driving motors, placed in a separate room, are controlled by a frequency converter for smooth acceleration in order to avoid breakage of the yarns and tapes due to the high production speed.

SPINNING MACHINES
COATING LINES
The coating line is composed of: extruder, safety wall plate with extrusion head, safety devices (detonation trap, cutting & extraction, powder suction) cooling bath and reeling unit.  The coating extruder is equipped with the most updated vacuum head, for perfect coating of the raw cord with PVC or Nylon with devices for automatic cutting and extraction of the cord from the extruder head.  Any type of cord between 2 and 18 mm diameter can be produced.    Special detonation traps avoid accidental propagation of cord detonation to the winding bobbin on the extraction and reeling unit.
COMMERCIAL BOBBINS REWINDING MACHINES
After the coating process, the reeled detonating cord is wound onto small bobbins at the required commercial length.  This operation (winding, stopping and cutting) is carried out in semi-automatic mode, according to the meter setting, once the reeling unit has been started.
The reeling unit can be equipped with either one or two heads, which can run independently, controlled by a single operator.  After this final rewinding, the detonating cord bobbins can be packed and stored.
BROCHURE
QUALITY CERTIFICATION   ISO 9001 - Ed. 2008
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DOTT. MARIANO PRAVISANI & C. S.r.l. - Partita Iva e Registro Imprese 00018160309 - Capitale sociale €50.000 interamente versato