PROBLEM TO BE SOLVED: To provide a rubber molding capable of improving on-ice performance and wet performance more than conventional levels.SOLUTION: This rubber molding has a plurality of regions A in which the arithmetic average roughness Ra of surfaces is 2 μm or lower and a plurality of regions B in which the arithmetic average roughness Ra 3 μm or higher, these regions being independent of each other, and is characterized in that the maximum lengths L1 of the regions A and/or B extend roughly in the same direction, the ratios L1/L2 of the maximum lengths L1 to second maximum lengths L2 in a direction perpendicular to the extending direction of the maximum lengths L1 are 1.1 or higher, and the ratios Sa/Sb of the areas Sa of the regions A to the areas Sb of the regions B are 10/90 to 90/10.SELECTED DRAWING: Figure 1
【課題】氷上性能およびウェット性能を従来レベル以上に向上するようにしたゴム成形体を提供する。【解決手段】その表面の算術平均粗さRaが2μm以下である複数の領域Aおよび算術平均粗さRaが3μm以上である複数の領域Bを互いに独立して有し、前記領域Aおよび/または領域Bの最大長さL1が略同方向に延在してなり、かつ前記最大長さL1および該最大長さL1の延在方向と直角方向に最大の第2長さL2の比L1/L2が1.1以上であると共に、前記領域Aの面積Saおよび領域Bの面積Sbの比Sa/Sbが10/90〜90/10であることを特徴とする。【選択図】図1
RUBBER MOLDING
ゴム成形体
2017-11-30
Patent
Electronic Resource
Japanese
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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