Elastic solid ball structure

Abstract

An elastic solid ball structure disclosed in the present invention consists of at least a thermoplastic polyurethane foam sphere center formed from thermoplastic polyurethane foam; and a first adhesive layer, a first spherical lamina, a second adhesive layer, and a second spherical lamina sequentially disposed on the external surface of the thermoplastic polyurethane foam sphere center; wherein the overall diameter of the elastic solid ball structure is 8 cm˜26 cm. Moreover, at least one surface of the second spherical lamina can be additionally provided with printed layers. Accordingly, the aforementioned structural design provides the present invention with advantages including design originality, good elasticity, a long serviceable life, permanently dispensing with the need to inflate, and eliminating the need to re-inflate, as well as saving on the need to purchase an inflating device.

What is claimed is: 
     
         1 . An elastic solid ball structure, characterized in that: the structure comprises:
 a thermoplastic polyurethane foam sphere center formed from thermoplastic polyurethane foam;   a first spherical lamina, the first spherical lamina covers the external surface of the thermoplastic polyurethane foam sphere center;   a first adhesive layer, the first adhesive layer is disposed between the external surface of the thermoplastic polyurethane foam sphere center and the internal surface of the first spherical lamina;   a second spherical lamina, the second spherical lamina covers the external surface of the first spherical lamina;   a second adhesive layer, the second adhesive layer is disposed between the first spherical lamina and the second spherical lamina.   
     
     
         2 . The elastic solid ball structure according to  claim 1 , characterized in that: the first spherical lamina is an EVA (Ethylene vinyl acetate) foam spherical lamina, TPE (thermoplastic elastomer) foam spherical lamina, SBR (styrene butadiene rubber) foam spherical lamina, NBR (nitrile butadiene rubber) foam spherical lamina, EPDM (ethylene propylene diene M-class rubber) foam spherical lamina, SBL (styrene butadiene latex) foam spherical lamina, POE (polyolefin elastomer) foam spherical lamina, PE (polyethylene) foam spherical lamina, or a TPR (thermoplastic rubber) foam spherical lamina. 
     
     
         3 . The elastic solid ball structure according to  claim 1 , characterized in that: the second spherical lamina is a transparent TPU (thermoplastic polyurethane) thin film, transparent PVC (polyvinyl chloride) thin film, transparent PC (polycarbonate) thin film, transparent TPE (thermoplastic elastomer) thin film, transparent TPR (thermoplastic rubber) thin film, transparent PET (Polyethylene terephthalate) thin film, or a transparent EVA (Ethylene vinyl acetate) thin film. 
     
     
         4 . An elastic solid ball structure, characterized in that, the structure comprises at least:
 a thermoplastic polyurethane foam sphere center formed from thermoplastic polyurethane foam, the diameter of the thermoplastic polyurethane foam sphere center is 11 cm˜25 cm;   a first spherical lamina, the first spherical lamina covers the external surface of the thermoplastic polyurethane foam sphere center, the thickness of the first spherical lamina is 1 mm˜5 mm;   a first adhesive layer, the first adhesive layer is disposed between the external surface of the thermoplastic polyurethane foam sphere center and the internal surface of the first spherical lamina;   a second spherical lamina, the second spherical lamina covers the external surface of the first spherical lamina, the thickness of the second spherical lamina is 0.1 mm˜0.25 mm;   a second adhesive layer, the second adhesive layer is disposed between the first spherical lamina and the second spherical lamina;   a printed layer, the printed layer is disposed on at least one surface of the second spherical lamina;   wherein the overall diameter of the elastic solid ball structure is 8 cm˜26 cm.   
     
     
         5 . The elastic solid ball structure according to  claim 4 , characterized in that: the first spherical lamina is an EVA (Ethylene vinyl acetate) foam spherical lamina, TPE (thermoplastic elastomer) foam spherical lamina, SBR (styrene butadiene rubber) foam spherical lamina, NBR (nitrile butadiene rubber) foam spherical lamina, EPDM (ethylene propylene diene M-class rubber) foam spherical lamina, SBL (styrene butadiene latex) foam spherical lamina, POE (polyolefin elastomer) foam spherical lamina, PE (polyethylene) foam spherical lamina, or a TPR (thermoplastic rubber) foam spherical lamina. 
     
     
         6 . The elastic solid ball structure according to  claim 4 , characterized in that: the second spherical lamina is a transparent TPU (thermoplastic polyurethane) thin film, transparent PVC (polyvinyl chloride) thin film, transparent PC (polycarbonate) thin film, transparent TPE (thermoplastic elastomer) thin film, transparent TPR (thermoplastic rubber) thin film, transparent PET (Polyethylene terephthalate) thin film, or a transparent EVA (Ethylene vinyl acetate) thin film. 
     
     
         7 . The elastic solid ball structure according to  claim 4 , characterized in that: the elastic solid ball structure is provided with a printed layer, the printed layer is disposed on the internal surface of the second spherical lamina. 
     
     
         8 . The elastic solid ball structure according to  claim 4 , characterized in that: the elastic solid ball structure is provided with the printed layer, the printed layer is disposed on the external surface of the second spherical lamina. 
     
     
         9 . The elastic solid ball structure according to  claim 4 , characterized in that: the elastic solid ball structure is provided with two of the printed layers, the printed layers are respectively disposed on the internal surface of the second spherical lamina and the external surface of the second spherical lamina.