Injection system with closing rod provided with a cleaning device suitable for removing the powder of molten plastic that builds up in the movement areas of the closing rod, in particular in the thrust bearing, during the normal operation of a molding machine. Then the silylation process is performed to form a silylated layer and the silylated layer is hardened with performing an electron beam processing or a ultra-violet ray processing. Inconsistency in data occurs when multiple pieces of sensor data overlap each other, the conflict cells are cells that experience inconsistency over an entire arc region, and candidates for the incorrect sonar sensor data are obtained when the conflict cells occur. A program viewed on the media viewing device is determined based upon the user viewing data. The plate is pressed by the injection pressure of the resin to come into close contact with the stopper and to create a seal which prevents leakage of resin into the slot. In preferred embodiments, the CNTDAs are represented by the following formula: .