| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for testing unvulcanized carcass ply by which drawing drag of a ply cord and positional relation between the cord and rubber or the like are evaluated by the unvulcanized carcass ply. <P>SOLUTION: When the drawing drag of the ply cord 4 is tested by a sample of the unvulcanized carcass ply consisting of a rubber drawing layer including a plurality of ply cords 4 in parallel by drawing, a sample 2 of the unvulcanized carcass ply is expanded at arbitrary expansion rate in the direction perpendicular to the extension direction of the cord 4 and after that, a hard member 6 is adhered to at least one surface of the sample 2. <P>COPYRIGHT: (C)2012,JPO&INPIT |
