Ring gate for retractable pin injection molding

The present invention is directed to the formation of a golf ball layer by injection molding the layer material into the mold cavity through a ring gate. After the golf ball core is securely positioned within an injection mold, layer material from at least one primary runner is introduced into a sec...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser:	PUNIELLO PAUL A
Format:	Patent
Sprache:	eng
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING AMUSEMENTS APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING,CLIMBING, OR FENCING BALL GAMES GAMES HUMAN NECESSITIES INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SPORTS TRAINING EQUIPMENT TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present invention is directed to the formation of a golf ball layer by injection molding the layer material into the mold cavity through a ring gate. After the golf ball core is securely positioned within an injection mold, layer material from at least one primary runner is introduced into a secondary runner that extends substantially around the mold cavity. The secondary runner fills with layer material until pressure within the secondary runner causes the layer material to be injected into the mold cavity through the ring gate. Injection of layer material continues until the mold cavity is completely filled. The layer material then cools and the ball is removed from the mold. The runner system providing layer material to the mold cavity may utilize a melt flipper to balance the temperature, flow and material properties of