Static charge neutraliser for dielectric web material - includes conductive bare wire placed extending across and parallel with web material and impressed with AC voltage from transformer

摘要

The static charge neutralising device comprises devices for continuously moving the web material in a predetermined path. A conductive bare wire less than 0.03 cm in dia. is located extending across and parallel with the web material and located 0.6 to 8 cm from the web material. A transformer is provided for impressing an AC voltage on the wire of 3000 to 10,000 volts at 40 to 70 Hertz. The devices for moving the web include a driven winding roll onto which the web is wound, and a nip roll in pressure contact with the web wound on the winding roll and at which pressure contact the web is first laid onto the winding roll.