| 摘要 |
A sheet material having a polymer layer over the surface of a base fabric, the polymer layer comprising primary outwardly projecting pebbles and secondary pebbles and valleys over the primary outwardly projecting pebbles, wherein an average height difference (A) of the primary pebbles is 50 to 1000 mu m, a projected area of the upper surface of the primary pebbles is 1 to 300 mm<2>, an average height difference (B) of the secondary pebbles and valleys is 5 to 200 mu m, an average distance between the pebbles of the secondary pebbles and valleys is 100 to 500 mu m, and A >/= B. A gas filling type ball, a basketball and a glove using the sheet material. Materials for sporting balls such as basketball, American football, Rugby ball, handball, etc., or as the material for gloves having enough mechanical strength, excellent handling property and sufficient surface abrasion resistance are provided. |
