| 摘要 |
PROBLEM TO BE SOLVED: To provide a variant extrusion die with lowering of dielectric constant of a coating attained and capable of stably manufacturing electric wires by continuous extrusion method. SOLUTION: For the variant extrusion die for electric wire coating used for manufacturing of wires forming a synthetic resin coating on an outer periphery face of a conductor by an extrusion method, a shape of the die at an extrusion outlet is constituted of a conductor insertion part at a center part, a conductor coating part surrounding it, a plurality of columnar parts extended in a radial shape from a periphery of the conductor coating part outward, and an outer periphery part extended from a tip of the columnar part in an outer periphery direction of the electric wire. Moreover, a slit is provided between each two adjacent outer periphery parts. COPYRIGHT: (C)2008,JPO&INPIT
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