Novel ball or dumb bells producing method

Abstract

The invention relates to a sports apparatus and a production method thereof, in particular to a novel ball or dumbbell and a production method thereof. The novel ball or dumbbell comprises a soft plastic shell, a valve that is arranged on the soft plastic shell and filler that is filled in the soft plastic shell and comprises water absorption resin and water. The production method comprises the steps as follows: 1. a normal vinyl process is adopted to produce the soft plastic apparatus shell; 2. the filler containing the water absorption resin is injected in the plastic shell and then water with a certain proportion is filled in; the proportion of compositions injected is rationed according to the specification of the produced sports apparatus; 3. the valve is mounted on the soft plastic shell which is then aerated; 4. after the water absorption resin absorbs water and inflates, redundant gas is discharged by virtue of the self contraction of the soft plastic shell, leading the interior of the soft plastic shell to approach the vacuum state. The production method of the invention simplifies the production process and lowers the cost by about 40 percent, and the products are characterized by good flexibility, large supporting value, good handle, safe use and environmentally-friendly materials, etc.

Description

technical field [0001] The invention relates to a sports apparatus and a production method thereof, in particular to a production method of a novel ball or dumbbell. Background technique [0002] Along with the rise of the national fitness movement, various physical fitness equipments are also competing to appear. The price of fitness equipment such as ball games and dumbbells is relatively low, which is easily accepted by ordinary people. But these common fitness equipments have many disadvantages again. Like the basketball, volleyball and football currently used, it is suitable for sports competitions, but because it is heavy and hard, it is not suitable for teenagers, beginners and middle-aged and old people; The leather or man-made materials are not cut, so the process is complicated and the manufacturing cost is high. And throwing spheres such as shot puts are mostly made of metal materials. Because of their heavy weight and improper operation by users, they are easy...

AI Technical Summary

Problems solved by technology

Now some companies are also producing this kind of rubber solid balls. Although the balls are relatively safe to use, these balls are composed of rubber spherical shells and inner tanks. There are problems such as complex production processes, high production costs, and poor environmental protection of materials. It is fine sand, iron powder, and sponge. Due to their different densities, uneven filling will occur after filling, the center of gravity will be unstable, and the sphere will not be round enough.

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