Method of forming foam filled baseball or softball

Details Method of forming foam filled baseball or softball Method of forming foam filled baseball or softball

1985-03-25

1986-09-09

Moon, Charlie T.

Metal working

Method of mechanical manufacture

Assembling or joining

29460, 29463, 156 735, 264 465, 264 68, 273 58A, 273 60A, 273 60B, 273DIG22, 273DIG8, B23P 2500

Patent

active

046100717

ABSTRACT:
A game ball for playing baseball or softball, and the method for making the ball. The ball is formed of a hollow plastic shell filled with an expanded plastic material, and a cover completes the ball. The weight of the ball is provided by the weight of the shell, the expanded plastic filling the shell, and the cover. The COR, sound, and feel off the bat are provided almost entirely by the plastic shell. The material of the shell is an ionomer or a polyolefin, and the preferred material is an ethylene acid copolymer, the material for the shell being selected to have a hardness in the range of Shore D 30 to 65. The expanded plastic filling the shell may be any self-initiating material. The method for forming the ball is to mold two hemispheres, place a liquid mix for forming the expanded plastic into the lower hemisphere, weld the upper hemisphere to the lower hemisphere, the upper hemisphere having a vent hole at the top, and let the shell rest while the material expands to fill the shell. The cover is then placed over the shell to complete the ball.

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