| 摘要 |
PROBLEM TO BE SOLVED: To provide a mold for preparing a test piece by which adhesiveness of a cord to a rubber can be tested accurately.SOLUTION: A mold 30 according to the present invention is used in preparing a test piece 50 for a tire having a main part 54 formed by being vulcanized with a rubber composition and a cord 52 buried in the main part 54. A cavity surface 34 of the mold 30 comprises a dent 36 on which is set an unvulcanized rubber composition having the cord 52 buried therein and a sub groove 42, the whole or a part of which is positioned at a bottom of the dent 36. The sub groove 42 extends in the same direction as an extension direction of the cord 52 at the time when the rubber composition is set on the dent 36.SELECTED DRAWING: Figure 1 |
