Method of producing tire belts

Details Method of producing tire belts Method of producing tire belts

1988-06-20

1989-07-11

Hoch, Raymond

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

1564214, B29D 3020

Patent

active

048469076

ABSTRACT:
A method of producing tire belt comprises a first step of attaching a first belt ply to a forming drum having, at its axial ends, curved portions whose diameters reduce progressively toward axially outer ends of the curved portions. The first belt ply has a width wider than an axial length of the forming drum. The method further comprises a second step of expanding the forming drum so that diameters of the curved portions at axially outermost ends become a predetermined diameter smaller than a maximum diameter of the forming drum in the first step to deform a central portion of the first belt ply following to an outer contour of the forming drum, a third step of foldering ends of the first belt ply at axial outer ends of a second belt ply after attaching the second belt ply to a center portion of the first belt ply outwardly thereof, and a fourth step of attaching a third belt ply in plural layers onto the first and second belt plies outwardly thereof.

REFERENCES:
patent: 2045545 (1936-06-01), Shook
patent: 3971694 (1976-07-01), Gazuit
patent: 4427473 (1984-01-01), Shichman et al.
patent: 4482416 (1984-11-01), Yasukochi et al.
patent: 4602972 (1986-07-01), Goodfellow

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