发明名称 UNBOND PROCESSING METHOD FOR PC STEEL TWISTED WIRE
摘要 PURPOSE:To improve rust-preventive force, by a method wherein a PC steel twisted wire is heated at a temperature higher than the melting temperature of a resin pellet by a specific temperature, a primary resin coating layer is provided, fats and oils are applied thin to the surface of the coating layer after cooling and secondary resin coating layer is formed on the surface further. CONSTITUTION:To begin with, threading of the PC steel twisted wire 1 mounted on an unwinding unwinding equipment 8 is performed up to a wind-up drum 15 of a wind-up machine 16. The PC steel twisted wire 1 is heated by a heating furnace 9 at a temperature higher than the melting temperature of a resin pellet by more than at least 50 deg.C by starting oeration, the resin is welded to the surface of the PC steel twisted wire 1 by an extruding machine (primary resin coating) 10, cooled by a colling tank 11 and a coating layer 7 for rust prevention is formed. Fats and oil 3 applied to the wire 1 by a fats and oils application tank 12 and the resin coating is formed on the surface of the fats and oils by an extruding machine (secondary resin coating) 13. The formed secondary resin coating layer 2 is wound up continuously around the wind-up drum 15 on the wind-up machine 16 after the coating layer 2 has been cooled by the next cooling tank 14.
申请公布号 JPS61284416(A) 申请公布日期 1986.12.15
申请号 JP19850126166 申请日期 1985.06.12
申请人 HOKKAI KOKI KK 发明人 HASUI TAKESHI
分类号 B29C47/02;B29C47/06;B29L9/00;B29L31/00;E04C5/08 主分类号 B29C47/02
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