主权项 |
1. A soccer ball, comprising of:
a bladder; and
a plurality of panels stitched together at stitch lines at an embossed portion of each of the plurality of panels, the stitch lines 2-3 mm from respective edges of each of the plurality of panels, wherein:a first thickness for each of the plurality of panels at the stitch lines is less than half a maximum thickness of each of the plurality of panels;each of the plurality of panels compromises of layers of ethylene propylene diene monomer (EPDM) foam, adhesives, Polyurethane (PU), and fabric, the layers all extending across an end-to-end surface of each of the plurality of panels, andthe embossed portion is a cavity opposite to a surface of the Polyurethane (PU). |