Title:
【発明の名称】プライ部材の成型方法
Document Type and Number:
Japanese Patent JP3124560
Kind Code:
B2
Abstract:
A method of forming a ply member such as a carcass ply for a radial tire, wherein the ply member is formed from a plurality of belt-shaped members (6) having a width obtained by multiplying pi inches by an integral number (1, 2, 3, ...) and a constant length. These belt-shaped members are successively attached one by one onto a forming drum (1) having an outer circumferential length obtained by multiplying pi inches by an integral number so that the side edges of the belt-shaped members are arranged in parallel with the axis of the forming drum. The adjacent side edges of the belt-shaped members in circumferential directions of the forming drum are forced closer together to butt-join the faces of the side edges with each other. In the case that the forming drum (1) is a polygonal cylindrical forming drum whose one side of the polygon has a length obtained by multiplying pi inches by an integral number, the belt-shaped members are more easily attached to the forming drum.
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Inventors:
Toshio Higashi
Masataka Minagawa
Masataka Minagawa
Application Number:
JP41808090A
Publication Date:
January 15, 2001
Filing Date:
December 28, 1990
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B29C65/00; B29D30/20; B29D30/30; B29D30/70; B29C53/38; (IPC1-7): B29D30/20
Domestic Patent References:
| JP397532A | ||||
| JP56106847A | ||||
| JP631551A |
Attorney, Agent or Firm:
Akihide Sugimura (5 outside)