UPPER STRUCTURE FOR FOOTBALL SHOE
PROBLEM TO BE SOLVED: To provide an upper structure with which spin characteristics of a ball after being kicked can be controlled and which enables general players to easily kick a non-rotating ball. SOLUTION: In a soccer shoe 1, the upper material for the inner instep region 40 of the instep upper...
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Zusammenfassung: | PROBLEM TO BE SOLVED: To provide an upper structure with which spin characteristics of a ball after being kicked can be controlled and which enables general players to easily kick a non-rotating ball. SOLUTION: In a soccer shoe 1, the upper material for the inner instep region 40 of the instep upper part of a wearer, in particular, the region (non-rotating shoot region NR) from a navicular bone NB to medial cuneiform bone MC and intermediate cuneiform bone IC is made of a material making ball spin rate of not more than 950 rpm right after rebound when an oblique impact test is performed for the upper material. The oblique impact test is conducted, while the upper material is stuck to a plate, by making a soccer ball with the spin rate of 0-25 rpm in a direction with an angle of 29-33° with respect to the plate surface collide against the upper material at a speed of 23.0-25.0 m/s. The upper material covering the inner instep region 40 is made of soft polyurethane with a low hardness of 30-50 A. COPYRIGHT: (C)2011,JPO&INPIT |
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