| 摘要 |
PURPOSE:To remove changing property by providing a cover comprising antistatic agent on the surface of metal wire which is covered with insulating material or heat resisting material. CONSTITUTION:A cover comprising antistatic agent is provided on the surface of metal wire covered with insulating material or heat resisting material. As the antistatic agent, nonionic surface active agent is used. For bonding wire for semiconductors, the agent from which ions of Na, K, Cl, Br and the like are removed is used. As the nonionic surface active agent, polyoxyethylene alkyl ether, polyoxyethylene phenolether, polyoxyethylene alkyl naphthol ether and the like are listed. As the metal wire, gold, copper and aluminum wires are listed. As the insulating material/heat resisting material, heat resisting polyurethane, polyformal, polyamide, polyester, polyamideimide, polyimide, polyesterimide and the like are listed. Thus, the insulating material and the heat resisting material are not charged, and wire breakdown due to the entanglement and the tight contact during the manipulation after the covering can be prevented. |
