Hollow ball structure based on supercritical process

Abstract

The invention relates to the field of sporting goods, in particular to a hollow ball structure based on a supercritical process, which comprises a foamed ball core, a plurality of hollow cavities are formed inside or outside or inside and outside the foamed ball core, a reinforcing layer is arranged on the periphery of the foamed ball core, a ball surface patch layer is bonded to the periphery of the reinforcing layer, and the foamed ball core or/and the ball surface patch layer can be prepared by using a supercritical foaming process, which ensures the roundness consistency and excellent elasticity and restorability during processing, as well as the roundness consistency after impact of external forces.

1 . A hollow ball structure based on a supercritical process, characterized by comprising a foamed ball core, a plurality of hollow cavities are formed inside or on the surface of the foamed ball core or inside and on the surface of the foamed ball core, a reinforcing layer is arranged outside the foamed ball core, a ball surface patch layer is bonded to the periphery of the reinforcing layer, and the foamed ball core or/and the ball surface patch layer are prepared by a supercritical foaming process. 
     
     
         2 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that the foamed ball core is at least one of polyurethane foamed ball core, EVA foamed ball core, TPE foamed ball core, SBR foamed ball core, NBR foamed ball core, EPDM foamed ball core, SBL foamed ball core, POE foamed ball core, PE foamed ball core, TPR foamed ball core, TPU foamed ball core and TPEE foamed ball core. 
     
     
         3 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that a film layer is bonded to the outer surface of the ball surface patch layer. 
     
     
         4 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that the foamed ball core is integrally foamed by the supercritical foaming process. 
     
     
         5 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that the foamed ball core is composed of a plurality of splicing bodies by means of splicing. 
     
     
         6 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that the reinforcing layer is a non-woven or woven fabric, which is bonded to the periphery of the foamed ball core by hot pressing or gluing. 
     
     
         7 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that the reinforcing layer is a winding layer, which is bonded with the periphery of the foamed ball core by gluing. 
     
     
         8 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that the ball surface patch layer is made of at least one of polyurethane, EVA, TPE, SBR, NBR, EPDM, SBL, POE, PE, TPR, TPU and TPEE and is foamed by the supercritical foaming process. 
     
     
         9 . The hollow ball structure based on the supercritical process according to  claim 8 , characterized in that the thickness of the ball surface patch layer is 1 mm to 20 mm, and the thickness of the film layer is 0.1 mm to 3 mm, and the film layer is prepared from at least one of polyurethane, EVA, TPE, SBR, NBR, EPDM, SBL, POE, PE, TPR, TPU and TPEE. 
     
     
         10 . The hollow ball structure based on the supercritical process according to  claim 9 , characterized in that an inner or outer layer of the film layer is provided with a printing layer by means of painting or printing or thermal transfer printing or water transfer printing or cold transfer printing or pad printing. 
     
     
         11 . The hollow ball structure based on the supercritical process according to  claim 1 , characterized in that a groove is arranged on the surface of the ball surface patch layer.