BALL STRUCTURE AND METHOD FOR MAKING THE SAME

The present invention relates to a ball structure and method for making the same. The ball structure includes an inner bladder and a plurality of covers. The covers surround the inner bladder. Each of the covers includes a base fabric layer, a middle layer and a surface layer. The middle layer is fo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	FENG, CHUNGIH, LIN, YONG-SONG, WU, CHUN-WEI
Format:	Patent
Sprache:	eng
Schlagworte:	AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES GAMES HUMAN NECESSITIES PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPORTS TRAINING EQUIPMENT TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention relates to a ball structure and method for making the same. The ball structure includes an inner bladder and a plurality of covers. The covers surround the inner bladder. Each of the covers includes a base fabric layer, a middle layer and a surface layer. The middle layer is formed form a first polyurethane (PU) solution. A PU solid content of the first PU solution is greater than 70 wt %. The middle layer is a foamed layer, and a porosity thereof is 25% to 85%. The surface layer is formed form a second polyurethane (PU) solution. A PU solid content of the second PU solution is 5 wt % to 20 wt %.