초록 ▼

An antistatic roll is provided for use in transferring and/or winding a continuous sheet of polymeric film. The roll comprises a cylindrical core made of an electrically conductive material which is provided with a pair of rotational shafts, each extending away from the opposite ends of the roll in

An antistatic roll is provided for use in transferring and/or winding a continuous sheet of polymeric film. The roll comprises a cylindrical core made of an electrically conductive material which is provided with a pair of rotational shafts, each extending away from the opposite ends of the roll in an axial direction. A layer of dielectric material surrounds the core, which has a spiral groove formed on the outer circumference thereof at a substantially equal pitch. An elongate conductor is held within and extends along the spiral groove to gather static electricity from the roll and/or the polymeric film. Associated with the elongate conductor is a grounding arrangement to drain off the static electricity gathered therein.

대표청구항 ▼

An antistatic roll for use in selectively transferring and winding a continuous sheet of polymeric film, which comprises: a cylindrical core made of an electrically conductive material, said core provided with a pair of rotational shafts, each extending away from the opposite ends of said core in an

An antistatic roll for use in selectively transferring and winding a continuous sheet of polymeric film, which comprises: a cylindrical core made of an electrically conductive material, said core provided with a pair of rotational shafts, each extending away from the opposite ends of said core in an axial direction; a layer of electrically nonconductive material surrounding said core, said nonconductive layer having a spiral groove formed on the surface thereof at a substantially equal pitch; an elongate conductor held within and extending along said spiral groove so as to gather static electricity charged on the roll and the polymeric film; and means for grounding said elongate conductor to drain off the static electricity gathered therein.