| 摘要 |
PURPOSE:To improve a production speed of a sheetlike material by improving a radiant effect of ions, by a method wherein a wire of a wire electrode is constituted by a core material whose tensile force is of a specific value or larger and diameter is of a specific size of smaller and a covering material composed of platinum or a platinum alloy covering the surface of the said core material. CONSTITUTION:Manufacturing equipment discharging a molten thermoplastic polymer onto a rotating cooling drum through a mouthpiece by making the same into a sheetlike state is provided with a wire electrode extending in a widthwise direction of the cooling drum and giving static electricity to a sheet in opposition to the sheet. A wire of the wire electrode is constituted of a core material whose tensile force is 150kg/mm<2> or larger and diameter is 500mu or smaller and a covering material composed of platinum or a platinum alloy covering the surface of the said core material. With this construction, as oligomer becomes hard to adhere due to a catalytic effect of the platinum of the surface of the wire, uniform radiant characteristics of an ion is kept on for a long period of time extending over the whole length of the wire. In addition, as disconnection also becomes hard to occur due to a matter that electric discharge becomes hard to occur, thinning of the wire becomes possible, radiant efficiency of the ion is improved and a peripheral speed of the cooling drum of a sheetlike material is improved. |
