Process for injection molding a tire having a crown and sidewall

Details Process for injection molding a tire having a crown and sidewall Process for injection molding a tire having a crown and sidewall

1975-07-16

1978-05-09

Klein, David

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

264271, 264275, 264326, 425120, 425130, B29H 500, B29H 1702

Patent

active

040885232

ABSTRACT:
A process for injection molding a crown of a vehicle tire from one composition and the sidewalls from a different composition involves the steps of shaping the reinforcing structure in the mold, injecting a first composition over one side of the reinforcing structure to form a crown with a tread and injecting a second composition to form the sidewalls with an interface within the proximity of the edges of the reinforcing structure. In a preferred embodiment, the tire has the configuration of the one disclosed in U.S. Pat. No. 3,805,868. The annular reinforcing structure is shaped to be generally convex but concave towards the tread along its edges.

REFERENCES:
patent: 2724425 (1955-11-01), Ostling
patent: 3247550 (1966-04-01), Haines
patent: 3381736 (1968-05-01), Ford et al.
patent: 3458373 (1969-07-01), Knipp et al.
patent: 3805868 (1974-04-01), Tangorra
patent: 3837986 (1974-09-01), Gorter et al.

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