Elastic solid ball structure

Abstract

An elastic solid ball structure of the present invention includes at least a thermoplastic polyurethane foam sphere center 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. The overall diameter of the elastic solid ball structure is 8 cm-26 cm. In addition, at least one protruding portion or at least one indentation portion is formed on the external surface of the thermoplastic polyurethane foam sphere center, thereby forming an irregular circular surface thereon. The described structural design provides the elastic solid ball structure of the present invention with advantages including good elasticity, a long serviceable life, permanently dispensing with the need to inflate, and eliminating having to re-inflate the ball structure.

What is claimed is: 
     
         1 . An elastic solid ball structure, characterized in that the structure comprises at least:
 a thermoplastic polyurethane foam sphere center formed from thermoplastic polyurethane foam material, the diameter of the thermoplastic polyurethane foam sphere center is 11 cm˜25 cm, and at least one protruding portion is formed on the external surface of the thermoplastic polyurethane foam sphere center, thereby forming an irregular circular surface thereon;   a first spherical lamina, the first spherical lamina covers the external surface of the the thermoplastic polyurethane foam sphere center, the thickness of the 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; and   a second adhesive layer, the second adhesive layer is disposed between the first spherical lamina and the second spherical lamina;   wherein the overall diameter of the elastic solid ball structure is 8 cm˜26 cm.   
     
     
         2 . The elastic solid ball structure according to  claim 1 , characterized in that: at least one indentation portion is formed on the internal surface of the first spherical lamina, thereby forming an irregular circular surface thereon, and at least one indentation portion mutually corresponds to the at least one protruding portion on the external surface of the thermoplastic polyurethane foam sphere center. 
     
     
         3 . The elastic solid ball structure according to  claim 1 , characterized in that: the surface of the second spherical lamina coincides with the surface of the at least one protruding portion formed on the external surface of the thermoplastic polyurethane foam sphere center. 
     
     
         4 . The elastic solid ball structure according to  claim 1 , characterized in that: the first adhesive layer, the first spherical lamina, the second adhesive layer, and two ends of the second spherical lamina are respectively provided with a first end surface and a second end surface; a separation distance is formed between the first end surfaces and the second end surfaces, wherein the separation distance enables exposure to the outside of at least one surface of the at least one protruding portion. 
     
     
         5 . The elastic solid ball structure according to  claim 1 , characterized in that: the elastic solid ball structure is provided with a printed layer, and the printed layer is disposed on the external surface of the second spherical lamina. 
     
     
         6 . The elastic solid ball structure according to  claim 1 , characterized in that: the elastic solid ball structure is provided with two of the printed layers, the two printed layers are disposed on the internal surface of the second spherical lamina and the external surface of the second spherical lamina, respectively. 
     
     
         7 . The elastic solid ball structure according to  claim 1 , characterized in that: the first spherical lamina is an EVA (ethylene vinyl acetate) foamed spherical lamina, a TPE (thermoplastic elastomer) foamed spherical lamina, SBR (styrene butadiene rubber) foamed spherical lamina, a NBR (nitrile butadiene rubber) foamed spherical lamina, an EPDM (ethylene propylene diene M-class rubber) foamed spherical lamina, a SBL (styrene butadiene latex) foamed spherical lamina, POE (polyolefin elastomer) foamed spherical lamina, PE (polyethylene) foamed spherical lamina, or a TPR (thermoplastic rubber) foamed spherical lamina. 
     
     
         8 . 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. 
     
     
         9 . An elastic solid ball structure, characterized in that, the structure comprises at least:
 a thermoplastic polyurethane foam sphere center formed from thermoplastic polyurethane foam material, the diameter of the thermoplastic polyurethane foam sphere center is 11 cm˜25 cm, and at least one indentation portion is formed on the external surface of the thermoplastic polyurethane foam sphere center, thereby forming an irregular circular surface thereon;   a first spherical lamina, the first spherical lamina covers the external surface of the thermoplastic polyurethane foam sphere center, the thickness of the 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;   wherein the overall diameter of the elastic solid ball structure is 8 cm˜26 cm.   
     
     
         10 . The elastic solid ball structure according to  claim 9 , characterized in that: at least one protruding portion is formed on the internal surface of the first spherical lamina, thereby forming an irregular circular surface thereon, and the at least one protruding portion mutually corresponds to the at least indentation portion on the external surface of the thermoplastic polyurethane foam sphere center. 
     
     
         11 . The elastic solid ball structure according to  claim 10 , characterized in that: the first adhesive layer, the first spherical lamina, the second adhesive layer, and two ends of the second spherical lamina are respectively provided with a first end surface and a second end surface; a separation distance is formed between the first end surface and the second end surface, wherein the separation distance enables exposure to the outside of at least one surface of the at least one indentation portion. 
     
     
         12 . The elastic solid ball structure according to  claim 9 , characterized in that: the elastic solid ball structure is provide with a printed layer, and the printed layer is disposed on the internal surface of the second spherical lamina. 
     
     
         13 . The elastic solid ball structure according to  claim 9 , characterized in that: the elastic solid ball structure is provided with a printed layer, the printed layer is disposed on the external surface of the second spherical lamina. 
     
     
         14 . The elastic solid ball structure according to  claim 9 , characterized in that: the elastic solid ball structure is provided with two of the printed layers, the two printed layers are disposed on the internal surface of the second spherical lamina and the external surface of the second spherical lamina, respectively. 
     
     
         15 . The elastic solid ball structure according to  claim 9 , characterized in that: the first spherical lamina is an EVA (ethylene vinyl acetate) foamed spherical lamina, a TPE (thermoplastic elastomer) foamed spherical lamina, SBR (styrene butadiene rubber) foamed spherical lamina, a NBR (nitrile butadiene rubber) foamed spherical lamina, an EPDM (ethylene propylene diene M-class rubber) foamed spherical lamina, a SBL (styrene butadiene latex) foamed spherical lamina, POE (polyolefin elastomer) foamed spherical lamina, PE (polyethylene) foamed spherical lamina, or a TPR (thermoplastic rubber) foamed spherical lamina. 
     
     
         16 . The elastic solid ball structure according to  claim 9 , 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.