I am guessing it must be a multiple extrusion, like several colors of playdough coming out of one hole. The innermost layer is the number and background, wrapped inside a border "tube" (for Brunswicks), wrapped inside a color "tube," wrapped inside a stripe "tube" if it is a striped ball.
Then this tootsie-roll log of plastic must be cross-cut into cylidrical stubs and then each stub ground into a sphere.
I am guessing. Does anyone know? Is there a video? Has anyone cut a ball in half to see the number continue through the body of the ball?
If that is how they do it, it is amazing how everything that is molten stays so perfectly concentric.
Then this tootsie-roll log of plastic must be cross-cut into cylidrical stubs and then each stub ground into a sphere.
I am guessing. Does anyone know? Is there a video? Has anyone cut a ball in half to see the number continue through the body of the ball?
If that is how they do it, it is amazing how everything that is molten stays so perfectly concentric.