Title:
押出し用ダイス及びそれを使用した長尺被覆物
Document Type and Number:
Japanese Patent JP4234622
Kind Code:
B2
Abstract:
To provide a polygonal section faithful to the target shape when extruding a long coated body having a polygonal section.
An extrusion die 1 extrudes a long coated body so that the sectional shape of the coated body is polygon. The shape of a hole 2 of the extrusion die 1 has polygonal apexes P and sides L to connect the adjacent apexes P to each other, and the sides to connect the adjacent apexes P are curved inwardly. In particular, the expressions 0.100 ≤ T/W ≤ 0.228 are satisfied, wherein T is the depth of the curvature in the shape of the hole 2, and W is the distance between the adjacent apexes P.
COPYRIGHT: (C)2005,JPO&NCIPI
Inventors:
Mitsufumi Iwanaga
Hiromi Nemoto
Hiromi Nemoto
Application Number:
JP2004041386A
Publication Date:
March 04, 2009
Filing Date:
February 18, 2004
Export Citation:
Assignee:
THE FURUKAW ELECTRIC CO.,LTD.
International Classes:
B21C25/02; B21C23/26; B29C48/30; H01B7/00; H01B13/14
Domestic Patent References:
| JP555301Y2 |