Method of retreading vehicle tires using microwave heating

Details Method of retreading vehicle tires using microwave heating Method of retreading vehicle tires using microwave heating

1977-09-28

1979-06-12

Kittle, John E.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156 731, 156272, 204158R, 219 65, 219 1055R, 219244, 260890, 264 26, B29H 1736

Patent

active

041579305

ABSTRACT:
A process and a rubber-base bonding material in the form of a preformed strip for retreading vehicle tires using a prevulcanized tread and microwave heating for vulcanizing and binding the bonding strip to the tire carcass and to the tread is disclosed, wherein a bonding strip is used whose dielectric loss factor at the vulcanizing (retreading) temperature is higher than the loss factor of the prevulcanized tread, so that the microwave heat applied will be concentrated to the bonding strip and vulcanize the same providing satisfactory adhesion between carcass and tread without the already prevulcanized tread being destroyed or significantly reduced in quality due to the effect of the excess heat.

REFERENCES:
patent: 1805026 (1931-05-01), State
patent: 2405802 (1946-08-01), Taber
patent: 2421099 (1947-05-01), Vogt
patent: 2541644 (1951-02-01), Enabnit
patent: 3236709 (1966-02-01), Carver
patent: 3471352 (1969-10-01), Brooke et al.
patent: 3639190 (1972-02-01), Brooke et al.
patent: 3880693 (1975-04-01), Urlings et al.
patent: 4046945 (1977-09-01), Brodie
patent: 4051090 (1977-09-01), Horowitz et al.
"Microwave Heating" by Copson, AVI Pub. Co. Westport Conn., 1962 pp. 11, 12.
"Giant Tire Microwave System" by Smith et al., Rubber Age, Jun. 1975, pp. 43-45.

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