Adhesive method for outer side and ball side of ball for ball match

Abstract

To provide a bonding method between the skin side and the ball side of a ball for ball game wherein bonding work in the manufacturing process of the ball for ball game is simplified and working environment is improved by bonding the skin side to the ball side as they are or with moisture by using a water reactive adhesive as an adhesive required for bonding the skin side and the ball side of the ball. When a plurality of skin sheets (A) on the skin side are bonded on a hollow spherical tube (B) on the ball side in the ball for ball game, the bonding method includes the steps of providing a water reactive adhesive (1) on the rear surface of the skin sheets (A) and bonding the skin sheets (A) on the hollow spherical tube (B) as they are or bonding the skin sheets (A) on the surface of the hollow spherical tube (B) after a water solution (2) is applied on the surface of the hollow spherical tube (B).

Description

technical field [0001] The present invention relates to a method of bonding the cover side and the ball side of a ball game ball. Background technique [0002] In the past, in balls for ball games, a rubber-made or synthetic resin-made split-shaped skin sheet is provided on the outer skin side, and a hollow spherical inner tube (called a carcass) is provided on the ball side. On the entire surface of the hollow spherical inner tube, Ball making is accomplished by bonding multiple pieces of individual skin material sheets with a water-soluble or solvent-based adhesive. [0003] In addition, in the ball making, each time the outer skin side piece and the carcass are coated with adhesive, for one ball, the adhesive is coated on dozens of outer skin side pieces, and the adhesive is coated one by one. Agent, its coating operation is extremely loaded down with trivial details, and if prepare and dry the place and equipment of those many balls, then need capacious place. (for exa...

AI Technical Summary

Problems solved by technology

[0004] In addition, especially in the case of using a water-soluble, water-based adhesive, if some moisture remains between the skin side and the ball side, or especially between the skin side and the skin film covering the outside, from The part where the water droplet remains looks dirty from the outside, or the part where the water droplet remains is moldy, and there is a disadvantage that the appearance of the product deteriorates, and there is also a defect that the product becomes a defective product due to poor adhesion at this part, Also, in the case of solvent-based adhesives, there are health and physical safety concerns for the workers

[0005] In addition, even if a solid-state resin binder is used as a binder, if a curing agent as a catalyst is used, if it is left for a long time, the solid-state resin binder will deteriorate during ball making, and its bonding ability will decrease, and there will be Disadvantages that the ball making operation cannot be carried out smoothly

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