Systems and methods for producing a ball

摘要

A sports ball having a high-performance cover formed from a plurality of panels with attached foam backing. The panels may be stitched together at stitch lines which are 2-4 mm from the edges of each of the panels. During manufacturing, before compression is applied, foam attached to outer layers for each of the panels may be a distance 2-6 mm away from the stitch lines. Foam attached on the inside of the sports ball may provide support and a robust round shape for manufacturing of a high performance sports ball.

主权项

1. A manufacturing method of a soccer ball, comprising the steps of:
a. cutting outer layer cutouts from an outer layer for a plurality of panels, the outer layer comprising a fabric and ethylene propylene diene monomer (EPDM) foam, b. cutting inner layer cutouts for all but one of the plurality of panels from an inner layer comprising EPDM foam, adhesive, and a plastic sheet, the inner layer cutouts being the same shape as corresponding outer layer cutouts but of a smaller size; c. cutting a bladder valve panel inside layer cutout from a sheet comprising multiple layers of fabric, multiple layers of adhesives, and a plastic sheet, the bladder valve panel inside layer cutout of the same size and shape as the inner layer cutouts; d. forming a bladder valve panel by:
i. applying an adhesive to an exposed surface of one of the outer layer cutouts; andii. removing the plastic sheet of the bladder valve panel inside layer cutout to expose an adhesive layer and attaching the remaining multiple layers of fabrics and multiple layers of adhesives to the exposed surface of the one of the outer layer cutouts; e. attaching a bladder to the bladder valve panel and inserting a valve attached to the bladder in the middle of the bladder valve panel; f. determining stitch lines on each of the outer layer cutouts, the stitch lines at a distance from edges of each of the outer layer cutouts that is less than the size difference between corresponding inner layer cutouts and outer layer cutouts; g. stitching a plurality of the outer layer cutouts together using machine stitching at the stitch lines; h. applying adhesive to exposed surfaces of all remaining outer layer cutouts other than the one of the outer layer cutouts used in the bladder valve panel; i. removing respective plastic sheets of the inner layer cutouts to expose respective adhesive layers of each of the inner layer cutouts and attaching respective EPDM foams to the exposed surfaces of all remaining outer layer cutouts; j. inverting the soccer ball inside out so that the bladder is contained within the soccer ball; k. hand stitching any remaining unstitched stitch lines; and l. inserting air in the bladder and applying heat to the soccer ball in a ball molding device for compressing the respective EPDM foams of the inner layer cutouts to extend to the stitch lines.