Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1979-10-19
1981-06-30
Kittle, John E.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
152361R, 156133, 156412, 156413, 156421, B29H 1708
Patent
active
042761050
ABSTRACT:
The tread of a pneumatic tire is bonded to a toroidal shaped radial tire carcass and a reinforcing structure which has discontinuities in its thickness in two planes parallel to the equatorial plane of the tire by a stitching process wherein the annular central portion of the tread while unvulcanized is first rotated against a brush. The lateral portions of the tread which overlie the thickest edge portions of the reinforcing structure are also pressed by rotating brushes commencing while the central portion is being pressed and the annular areas of the tread intermediate the center and lateral areas are pressed with metallic discs. The lateral portions of the tread overlying the thickest parts of the reinforcing structure are then pressed with metallic discs. The process and apparatus having two sets of brushes to achieve the sequence of pressing steps adhere the unvulcanized tread to the underlying structure without air bubbles being trapped therebetween.
REFERENCES:
patent: 1834559 (1931-12-01), Waner
patent: 2056450 (1936-10-01), Haberstump
patent: 2464020 (1949-03-01), Breth
patent: 2600291 (1952-06-01), Engler
patent: 3784438 (1974-01-01), Dullinger
patent: 3819449 (1974-06-01), Caretta
patent: 4052246 (1977-10-01), Albareda et al.
patent: 4095731 (1978-06-01), Harding et al.
Industrie Pirelli S.p.A.
Kittle John E.
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