Golf ball with a multi-layered cover

Details Golf ball with a multi-layered cover Golf ball with a multi-layered cover

1996-11-07

1998-07-21

Ryan, Patrick

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

428 11, 428213, 428220, 428259, 428260, 428287, 428288, 428402, 428403, 428407, 473351, 473365, 473373, 473377, 264248, 264250, 242435, 242436, B32B 900

Patent

active

057832935

ABSTRACT:
The present invention is directed towards a multi-layer golf ball cover formed by a sandwich injection molding process, wherein said golf ball cover comprises an inner layer and an outer layer of a first material and an intermediate layer therebetween of a second material. The present invention is directed towards a sandwich injection molding process for forming a multi-layer golf ball cover involving the steps of pushing a measured amount of a plasticized first material into one end of an accumulation cylinder, pushing a measured amount of a plasticized second material into the opposite end of the accumulation cylinder, and injecting both materials in a single plunging step, so that the first material substantially coats the surface of the mold while the second material substantially fills the interior of the first material.

REFERENCES:
patent: 3454280 (1969-07-01), Harrison et al.
patent: 3819768 (1974-06-01), Molitor
patent: 4431193 (1984-02-01), Nesbitt
patent: 4625964 (1986-12-01), Yamada
patent: 4670199 (1987-06-01), Montet et al.
patent: 4919434 (1990-04-01), Saito
patent: 4944909 (1990-07-01), Eckardt et al.
patent: 5150906 (1992-09-01), Molitor et al.
patent: 5253871 (1993-10-01), Viollaz
patent: 5314187 (1994-05-01), Proudfit
patent: 5467994 (1995-11-01), Moriyama et al.
patent: 5645786 (1997-07-01), Okada et al.

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