| 摘要 |
A sport ball may incorporate a casing that includes a plurality of panels joined at a plurality of seams, at least a first panel of the plurality of panels having (a) a first layer including a polymer material and positioned to form a portion of an exterior surface of the ball, (b) a second layer including a polymer foam material and positioned inward and adjacent to the first layer, and (c) a third layer positioned inward and adjacent to the second layer, the first panel of the casing defining one or more indentations in the exterior surface, the first layer being bonded directly to the third layer at the one or more indentations, wherein the one or more indentations include a first indentation. The first indentation may extend through substantially all of a thickness of the first panel, and the first indentation may have a substantially squared cross-sectional configuration. |
