The present invention is directed to a golf ball having a non-planar parting line on its spherical surface.

An apparatus and method for eliminating mold lines when molding a part having ferromagnetic pigments is provided. A mold assembly having a mold with a cavity and valve gates is formed. Pucks are fitted at the gates to collect residual cold plastic. The calculation of a specific sequence and timing of the opening of the valve gates is determined based on a calculation of the total number of valve gates needed to fill a part while maintaining acceptable injection molding pressure. Once calculated, the gates are positioned around the mold cavity to balance flow length ratio. A primary gate is chosen for initial injection. The time for the material to flow from the first to the second gate is established. The second gate is opened after the flow front reaches the second gate. This pattern continues until all valve gates are opened.

The present invention is directed to a golf ball having a non-planar parting line on its spherical surface.

The present invention is directed to a golf ball having a non-planar parting line on its spherical surface.

The molded body according to one aspect of the present disclosure is a molded body obtained by molding resin and used by allowing light to pass through the resin. This molded body includes: a plurality of gate marks each being as a mark of a gate through which the resin was injected during the molding; and a weld part disposed in such a manner as to avoid a position where the light passes through the resin.

A method of injection molding a building product includes providing an injection mold with a plurality of gates located adjacent a perimeter of the injection mold. The method further includes commingling a first material and a second material into a flow, the second material comprising a color that contrasts with a color of the first material and injecting the commingled flow into the plurality of gates to form a building product. Thereafter, the method includes removing the building product from the injection mold. The second material extends through an interior of the building product and appears as contrasting streaks on an exterior of the building product to form a variegated grain appearance. The method also includes notching a portion of the building product, such that the building product has a substantially linear grain in an exposed portion thereof.

A method of injection molding a building product includes providing an injection mold with a plurality of gates located adjacent a perimeter of the injection mold. The method further includes commingling a first material and a second material into a flow, the second material comprising a color that contrasts with a color of the first material and injecting the commingled flow into the plurality of gates to form a building product. Thereafter, the method includes removing the building product from the injection mold. The second material extends through an interior of the building product and appears as contrasting streaks on an exterior of the building product to form a variegated grain appearance. The method also includes notching a portion of the building product, such that the building product has a substantially linear grain in an exposed portion thereof.

Golf ball methods and molds for quickly and efficiently eliminating air/gas from within a mold while better centering a subassembly in the mold during golf ball manufacture and the improved golf balls resulting therefrom.

The present invention is directed to a mold for forming the cover of a golf ball having a non-planar parting line on its spherical surface.

An injection molded lens, to which the hot runner according to an embodiment of the present invention includes: a primary sprue; a primary runner which has a central portion connected to the primary sprue and an extension portion extending radially from the central portion; a secondary sprue of which one end is connected to the extension portion of the primary runner; a secondary runner which has a top thereof connected to the other end of the secondary sprue, has an annular shape and a thin plate shape, and has a plurality of protrusions formed on an outer circumference thereof; a plurality of gates which are connected to ends of the plurality of protrusions of the secondary runner; and a plurality of cavities connected to the plurality of gates. An injection molded lens, to which the hot runner according to another embodiment of the present invention includes: a primary sprue; a primary runner which has a central portion connected to the primary sprue and an extension portion extending radially from the central portion; a secondary sprue of which one end is connected to the extension portion of the primary runner; a secondary runner which has a top thereof connected to the other end of the secondary sprue, has a polygonal shape and a thin plate shape, and has a plurality of protrusions formed on an outer circumference thereof; a plurality of gates which are connected to ends of the plurality of protrusions of the secondary runner; and a plurality of cavities connected to the plurality of gates.