| 摘要 |
A sports ball comprises a hollow spherical-shaped inflatable tube; a covering layer comprising a thin rubber pouch and covering the tube; a reinforced layer which is adhered on the surface of the covering layer with a solution of an adhesive agent and an outer layer formed on the surface of the reinforced layer. The covering layer is made of a material which does not permit the solution of the adhesive agent to pass therethrough and an inorganic lubricant is disposed between the tube and the covering layer, so that adhesion between the tube and the covering layer is prevented. A method for making a sports ball includes the steps of: inserting an inflatable tube into a covering layer which comprises a thin rubber pouch and is made of a material which does not permit the solution of an adhesive agent to pass through the covering layer; injecting a powder of an inorganic lubricant into the covering layer; and inflating the inflatable tube into a spherical shape. A reinforced layer is attached on the surface of the covering layer with the solution of an adhesive agent, alignment guides are formed on the surface of the reinforced layer by molding, and an outer layer is attached on the surface of the reinforced layer along those alignment guides. Alternatively, a method includes the steps of: spreading a powder or a suspension of an inorganic lubricant on an inflatable tube; inserting the tube into a covering layer which comprises a thin rubber pouch and is made of a material which does not permit the solution of an adhesive agent to pass through the covering layer; inflating the inflatable tube into a spherical shape and attaching a reinforced layer on the surface of the covering layer with the solution of an adhesive agent. Alignment guides are formed on the surface of the reinforced layer by molding, and an outer layer is attached on the surface of the reinforced layer along those alignment guides.
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