Non-pneumatic tire with double-injected spokes for improving coherence with tread and manufacturing method thereof

摘要

The present invention relates to a non-pneumatic tire having a spoke portion that is double-injected to improve bonding strength with a tread portion and a method for manufacturing the same. The present invention relates to a method for manufacturing a non-pneumatic tire having a retainable double-injected spoke portion. In the non-pneumatic tire having a spoke portion that is double-injected to improve bonding strength with the tread portion of the present invention, a joint reinforcement portion made of the same material as the tread portion is provided on the spoke portion, so that the bonding force between the spoke portion and the tread portion may be improved. In addition, in the non-pneumatic tire having a spoke part that is double-injected to improve bonding strength with the tread part of the present invention, after separating the worn existing tread part, the joint reinforcing part made of the same material as the tread part makes the spoke part without a separate grinding process. Since the new tread can be joined, there is an advantage that management efficiency can be improved. The manufacturing method of the non-pneumatic tire having the spoke parts double-injected to improve bonding strength with the tread part of the present invention can bond the tread part to the outer peripheral surface of the spoke part without additional grinding on the outer peripheral surface of the spoke part, thereby simplifying the manufacturing process and reducing the number of operations. There is an advantage that the manufacturing efficiency can be improved by reducing the