the following description is disclosed to enable any person skilled in the art to make and use the present invention . preferred embodiments are provided in the following description only as examples and modifications will be apparent to those skilled in the art . the general principles defined in the following description would be applied to other embodiments , alternatives , modifications , equivalents , and applications without departing from the spirit and scope of the present invention . referring to fig1 to fig2 b of the drawings , a game ball with non - slip layer according to a first preferred embodiment of the present invention is illustrated , wherein the game ball comprises a plurality of stretchable panels 10 , marginal edges 11 provided on edges of stretchable panels 10 sealed together to form a ball surface 100 , a non - slip layer 12 attached on the ball surface 100 to improve the friction of the ball surface 100 , and a bladder 13 received inside the ball surface 100 . preferably , there are four pieces of stretchable panels 10 are sealed with each other , within each of the stretchable panels 10 comprises a pair of marginal edges 11 . the stretchable panels 10 comprise a first to fourth stretchable panels 10 a , 10 b , 10 c , and 10 d , wherein the structures of the four stretchable panels 10 are identical . the first stretchable panel 10 a comprises a pair of marginal edges 11 a , and the second stretchable panel 10 b comprises a pair of marginal edges 11 b , and the third stretchable panel 10 c comprises a pair of marginal edges 11 c , and the fourth stretchable panel 10 d comprises a pair of marginal edges 11 d . as shown in fig2 , the non - slip layer 12 is attached on each of the stretchable panels 10 of the ball surface 100 by stitching , gluing , hot melting technology , etc ., wherein the non - slip layer 12 can be made of durable and flexible materials in order to improve the hardness of the ball surface 100 of the game ball . preferably , the non - slip layer 12 can be a mesh layer attached on the stretchable panels 10 of the game ball to provide better friction force of the ball surface 100 . moreover , non - slip layer 12 with different color and patterns can be customized based on the customers &# 39 ; needs . for example , cartoon images or pictures can be printed on the non - slip layer 12 to not only increase the friction force of the ball surface 100 , but also improve aesthetic effects of the game ball . furthermore , the mesh of the non - slip layer 12 can be designed as heart - like or star like meshes . accordingly , one of the pair of the marginal edges 11 a of the first stretchable panel 10 a is sealed with one of the pair of the marginal edges 11 b of the second stretchable panels 10 b . and , the other of the pair of the marginal edges 11 a of the first stretchable panels 10 a is sealed with one of the pair of the marginal edges 11 d of the fourth stretchable panels 10 d , so as to connect the first stretchable panels with the second and fourth stretchable panels . in addition , the other of the pair of the marginal edges 11 b , 11 d of the second and fourth stretchable panels 10 b , 10 d are sealed with the pair of the marginal edges 11 c of the third stretchable panels 10 c respectively , so as to connect the third stretchable panel 10 c with the second and fourth stretchable panels 10 b , 10 d . on the other hand , the first to fourth stretchable panels 10 a , 10 b , 10 c , 10 d are sealed with each other to form the ball surface 100 . as shown in fig1 , the ball surface 100 comprises an inflating hole 101 to inflate air into the bladder 13 . in addition , the bladder 13 comprises a inflation unit 131 arranged align with the inflating hole 101 to communicate with the ball surface 100 , so the air can be inflated into the bladder 13 through the inflating hole 101 and the inflation unit 131 . it is worth to mention that the inflation unit 131 is made of elastic and flexible material materials , and a diameter of the inflating unit 131 of the bladder 13 is slightly larger than a diameter of the inflatable hole 101 . therefore , when the bladder 13 is received inside the ball surface 100 , the inflating unit 131 is deformed and passed through the inflatable hole 101 of the ball surface 100 , and after the inflating unit 131 is passed through the inflatable hole 101 , the inflating unit 131 reinstates to its original shape , and is locked on the inflatable hole 101 , so the bladder 13 can be remained at a fixed position without sliding inside the ball surface 100 . therefore , the inflation unit 131 of the bladder 13 is not only used to inflate the bladder , but also used to affix the bladder 13 at a fixed position . alternatively , as shown in fig4 , an alternative mode of the non - slip layer 12 according to the above preferred embodiment of the present invention is illustrated , wherein a structure of the game ball in this alternative mode is the same , excluding a configuration of the non - slip layer 12 . in this alternative mode , the non - slip layer 12 is a non - slip layer bag 12 ′ having an bag opening 121 ′, and the game ball can be put inside the non - slip layer bag 12 through the bag opening 121 ′. on the other hand , the non - slip layer 12 ′ and the game ball are two separated items . preferably , the non - slip layer 12 ′ is a non - slip detachable bag which can be selectively cover on the ball surface 100 of the game ball . therefore , the player can use the game ball individual without non - slip layer 12 ′ in a normal playing environment , and after the non - slip layer 12 ′ is coved on the ball surface 100 ′ of the game ball , the game ball with non - slip layer 12 ′ can be used in wet and moist environment . it is worth mentioning that the non - slip layer bag 12 ′ is made of elastic materials , so when the non - slip layer bag 12 ′ is not in use the non - slip layer bag 12 ′ can be folded and stored in a compact size . and , when the game ball is putting inside the non - slip layer bag 12 ′, the non - slip layer bag 12 ′ is expanded to closely overlap on the outer surface of the ball surface 100 . a shape of the non - slip layer bag 12 ′ is shaped like the game ball . in order to deposit the game ball into the non - slip layer bag 12 ′, a diameter “ w ” of bag opening 121 ′ of the non - slip layer bag 12 ′ is changed while the game ball is depositing inside the non - slip layer bag 12 ′, wherein a maximum value of the diameter “ w ” of bag opening 121 ′ is slighting larger than a sectional radius “ w ” of the game ball . if the diameter “ w ” of the bag opening 121 ′ of the non - slip layer bag 12 ′ is much more larger than the diameter of the sectional radius “ w ” of the game ball , the non - slip layer bag 12 ′ is covered on the outer surface of the ball surface in an un - tightly state . otherwise , the game ball cannot be received inside the non - slip layer bag 12 ′ if the diameter “ w ” of bag opening 121 ′ is smaller than the sectional radius “ w ” of the game ball . accordingly , the non - slip detachable layer 12 can be attached on different portions of sport goods to improve the friction force thereof . for example , the non - slip detachable layer 12 ′ can be attached on handles of rackets in order to increase the friction force during the players are holding on the handles thereof . and , the non - slip detachable layer 12 can be attached on surfaces of the frisbee or snowboards . especially in the water sport goods or toys , such as noodle , handles of the water guns and water paddles , kickboards , surfboards and drive toys , the non - slip layer 12 can be applied thereon to provide better friction forces while the water sport goods are contacted with water during playing . referring to fig5 of the drawings , a manufacturing method of the game ball with non - slip layer according to a second preferred embodiment of the present invention is illustrated , wherein the manufacturing method comprising steps of : 1 . preparing a plurality of stretchable panels 10 having a plurality of marginal edges 11 ; 2 . attaching non - slip layer 12 on each of the stretchable panels 10 ; 3 . sealing each of the stretchable panels 10 together along the marginal edges 11 to form a ball surface 100 ; 4 . putting a bladder 13 inside the ball surface to form a game ball with non - slip layers 12 . in step 1 , the number of the stretchable panels 10 is four , and each of the stretchable panels 10 comprises a pair of marginal edges 11 . accordingly , the stretchable panels 10 comprise a first to fourth stretchable panels 10 a , 10 b , 10 c , and 10 d , wherein structures of the four stretchable panels are identical . the first stretchable panel 10 a comprises a pair of marginal edges 11 a , and the second stretchable panel 10 b comprises a pair of marginal edges 11 b , and the third stretchable panel 10 c comprises a pair of marginal edges 11 c , and the fourth stretchable panel 10 d comprises a pair of marginal edges 11 d . in step 2 , the non - slip layer 12 is attached on each of the stretchable panels of the ball surface 100 by stitching , gluing , hot melting technology , etc ., wherein the non - slip layer 12 can be made of durable materials in order to improve the life - span of the ball surface 100 of the game ball . in step 2 , the non - slip layer 12 can be a mesh layer . moreover , the non - slip layer with different color and patterns of 12 can be customized based on the customers &# 39 ; needs . for example , cartoon images or pictures can be attached on the non - slip layer 12 to not only increase the friction force of the ball surface 100 , but also improve aesthetic effects of the game ball . furthermore , the mesh of the non - slip layer 12 can be designed as heart - like or star like meshes . in step 3 , one of the pair of the marginal edges 11 a of the first stretchable panel 10 a is sealed with one of the pair of the marginal edges 11 b of the second stretchable panels 10 b . and , the other of the pair of the marginal edges 11 a of the first stretchable panels 10 a is sealed with one of the pair of the marginal edges 11 d of the fourth stretchable panels 10 d , so as to connect the first stretchable panels with the second and fourth stretchable panels . in addition , the other of the pair of the marginal edges 11 b , 11 d of the second and fourth stretchable panels 10 b , 10 d are sealed with the pair of the marginal edges 11 c of the third stretchable panels 10 c respectively , so as to connect the third stretchable panel 10 c with the second and fourth stretchable panels 10 b , 10 d . on the other hand , the first to fourth stretchable panels 10 a , 10 b , 10 c , 10 d are sealed with each other to form the ball surface 100 . in the step 4 , the ball surface 100 comprises as inflatable hole 101 , and the bladder 13 comprises an inflating unit 131 , wherein the inflating unit 131 can be interlocked with inflatable hole 101 to connect the ball surface 100 and the bladder 13 . referring to fig6 of the drawings , a manufacturing method of a game ball with non - slip layer according to a third preferred embodiment of the present invention is illustrated , wherein the manufacturing method comprises the steps of : 1 . preparing a plurality of stretchable panels 10 having marginal edges 11 ; 2 . sealing each of the stretchable panels 10 together along the marginal edges 11 to form a ball surface 100 ; 3 . putting a bladder 13 inside the ball surface to form a game ball ; and 4 . putting the game ball inside a non - slip layer bag 12 ′ through a bag opening 121 ′. in step 1 , the number of the stretchable panels 10 is four , and each of the stretchable panels 10 comprises a pair of marginal edge 11 . accordingly , the stretchable panels 10 comprise a first to fourth stretchable panels 10 a , 10 b , 10 c , and 10 d , wherein structures of the four stretchable panels are identical . the first stretchable panel 10 a comprises a pair of marginal edges 11 a , and the second stretchable panel 10 b comprises a pair of marginal edges 11 b , and the third stretchable panel 10 c comprises a pair of marginal edges 11 c , and the fourth stretchable panel 10 d comprises a pair of marginal edges 11 d . in step 2 , one of the pair of the marginal edges of the first stretchable panel 10 a is sealed with one of the pair of the marginal edges 11 b of the second stretchable panels 10 b . and , the other of the pair of the marginal edges 11 a of the first stretchable panels 10 a is sealed with one of the pair of the marginal edges 11 d of the fourth stretchable panels 10 d , so as to connect the first stretchable panels with the second and fourth stretchable panels . in addition , the other of the pair of the marginal edges 11 b , 11 d of the second and fourth stretchable panels 10 b , 10 d are sealed with the pair of the marginal edges 11 c of the third stretchable panels 10 c respectively , so as to connect the third stretchable panel 10 c with the second and fourth stretchable panels 10 b , 10 d . on the other hand , the first to fourth stretchable panels 10 a , 10 b , 10 c , 10 d are sealed with each other to form the ball surface 100 . in the step 3 , the ball surface 100 comprises as inflatable hole 101 , and the inflatable bag 13 comprises an inflating unit 131 , wherein the inflation unit 131 can be interlocked with inflatable hole 101 to connect the ball surface 100 and the inflatable bag 13 . and , the bladder 13 can be inflated through the inflatable hole 101 and the inflation unit 131 . in step 4 , the non - slip layer bag 12 ′ and the game ball are two separated items . preferably , the non - slip layer 12 ′ is a non - slip detachable bag which can be selectively cover on the ball surface 100 of the game ball . in the step 4 , the non - slip layer bag 12 ′ is made of elastic materials and shaped like a game ball , so when the non - slip layer bag 12 ′ is not in use the non - slip layer bag 12 ′ can be folded and stored in a compact size . and , when the game ball is putting inside the non - slip layer bag 12 ′, the non - slip layer bag 12 ′ is expanded to closely overlap on the outer surface of the ball surface 100 . in order to deposit the game ball into the non - slip layer bag 12 ′, a diameter “ w ” of bag opening 121 ′ of the non - slip layer bag 12 ′ is changed while the game ball is depositing inside the non - slip layer bag 12 ′, wherein a maximum value of the diameter “ w ” of bag opening 121 ′ is slightly larger than a sectional radius “ w ” of the game ball . one skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting . it will thus be seen that the objects of the present invention have been fully and effectively accomplished . the embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles . therefore , this invention includes all modifications encompassed within the spirit and scope of the following claims .
a game ball with non - slip layer includes a plurality of f stretchable panels , and marginal edges of the panels connected and sealed together to form a ball surface , and the ball surface having in inflating hole to inflate air into an inflatable bag formed inside the panels ; and a non - slip mesh layer covered around an outer surface of the ball surface to provide improved handing and playable characteristics .