Patent ID: 6705245
Filing Date: 2004-03-16
Classification: B05D,C23C

Abstract:
An apparatus for forming polymer continuously by DC plasma polymerization comprising:a transport chamber having an unwinding roll for unwinding a substrate to be surface treated and transporting the same to another chamber and a winding roll for winding the surface-treated substrate; a deposition chamber for plasma polymerizing the surface of the substrate by DC discharge plasma by using the substrate as an electrode and by installing at least one opposite electrode opposed to the substrate; a high voltage supply unit electrically connected to the substrate for applying a high voltage to the substrate; an insulating unit for electrically insulating an electrical path between the high voltage supply unit and the substrate from the main body of the apparatus; a pumping unit for maintaining the deposition chamber vacuous; and a gas supply unit for introducing reactive gas and unreactive gas into the deposition chamber; wherein, in order to apply a power to the substrate via the unwinding roll and insulate the electric path from the main body of the apparatus, the transport chamber comprises: a driving unit for supplying rotating force from the outside of the transport chamber to the unwinding roll, a first driving shaft directly connected to the driving unit for transmitting the rotating force of the driving unit; a second driving shaft connected to a roll to which a substrate is wound and the first driving shaft, shaft supporting units for supporting the second driving shaft and transmitting a load of the substrate on the second driving shaft to the transport chamber; and an insulating coupling inserted between the first driving shaft and the second driving shaft for thereby insulating the two driving shafts; and the shaft supporting unit comprises: a bearing into which the end of the second driving shaft is inserted to thus be rotatable; a block at which the bearing is installed; a connector installed at one end of the block to thus be connected with the power supply of a high voltage supply unit; a supporter for supporting the block from a lower portion and making a load on the second driving shaft to be transmitted to the bottom of the chamber; and an insulating member inserted between the block and the supporter for thereby electrically insulating them.