A tennis ball including a spherical core. The spherical core including an outer surface and a raised wall integrally molded as part of the outer surface.

A method for forming a tennis ball including the steps of providing a non-foamed thermoplastic core and providing a non-smooth textured surface on the core. The thermoplastic core including a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. The thermoplastic material having a thickness between 3.0 and 8.0 mm. The thickness of the thermoplastic material being configured to maintain dimensional stability at internal pressures of between zero and 15 psi.

A method for forming a tennis ball including the steps of providing a non-foamed thermoplastic core and providing a non-smooth textured surface on the core. The thermoplastic core including a thermoplastic material having a specific gravity of 0.86 to 1.38, a flexural modulus of 2.0 to 50.0 MPa, and a Shore D hardness of 10 to 70. The thermoplastic material having a thickness between 3.0 and 8.0 mm. The thickness of the thermoplastic material being configured to maintain dimensional stability at internal pressures of between zero and 15 psi.

A method of encapsulating content with calcium alginate membrane to form a capsule. The method includes embedding sodium alginate into a traditional gelatin ribbon used in gelatin encapsulation, adding calcium to a fill material, encapsulating the fill material, and then denaturing the gelatin in the shell. An exemplary use of this method is to form throwable paintballs; however, other products could be formed using this process. A paintball formed by this process is also disclosed.

A method of encapsulating content with calcium alginate membrane to form a capsule. The method includes embedding sodium alginate into a traditional gelatin ribbon used in gelatin encapsulation, adding calcium to a fill material, encapsulating the fill material, and then denaturing the gelatin in the shell. An exemplary use of this method is to form throwable paintballs; however, other products could be formed using this process. A paintball formed by this process is also disclosed.

A sports training ball is disclosed that is made up of a shell having an embossed design that defines an enclosure having an interior volume substantially occupied by a filler that includes a mixture of a first material, a second material, and a third material.

A sports training ball is disclosed that is made up of a shell having an embossed design that defines an enclosure having an interior volume substantially occupied by a filler that includes a mixture of a first material, a second material, and a third material.

The present invention provides a novel golf ball construction including a layer having a design based on a minimal surface. The layer is defined by an envelope shape having an outer boundary and an inner boundary, and consists of a minimal surface and an interstitial space, the minimal surface and interstitial space being bounded by the envelope shape. The minimal surface is a single continuous surface which does not intersect itself and has zero mean curvature.

The present invention provides a novel golf ball construction including a layer having a design based on a minimal surface. The layer is defined by an envelope shape having an outer boundary and an inner boundary, and consists of a minimal surface and an interstitial space, the minimal surface and interstitial space being bounded by the envelope shape. The minimal surface is a single continuous surface which does not intersect itself and has zero mean curvature.

The present invention provides a novel golf ball construction including a layer having a design based on a minimal surface. The layer is defined by an envelope shape having an outer boundary and an inner boundary, and consists of a minimal surface and an interstitial space, the minimal surface and interstitial space being bounded by the envelope shape. The minimal surface is a single continuous surface which does not intersect itself and has zero mean curvature.