Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1989-01-10
1990-02-27
Wityshyn, Michael
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
1561303, 156134, 156159, 1563045, 1563046, 1565802, B29C 6508, B65H 6908
Patent
active
049043196
ABSTRACT:
A method for splicing beveled edges of a relatively thick tire tread strip free of internal reinforcing cords by ultrasonic energy. A contact face of a sonic welding tool or horn is pressed against the mating overlapping edges of the strip at a cylinder pressure within a range of 20 psi to 80 psi. Ultrasonic energy is applied to the strip while the pressure is applied thereto for a period of between 2 seconds and 12 seconds to heat and soften the rubber compound of the strip without vulcanizing the rubber compound. Pressure is maintained by the tool against the strip after application of the ultrasonic energy for a period of generally between 0.5 to 2.0 seconds to permit the softened compound to cool, set and bond together to form a strong bond between the overlapped edges. The contact face of the horn generally matches the contour of the contacted surface of the strip.
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Divincenzo Costantino L.
Wood Ira L.
Bridgestone/Firestone Inc.
Ruf Ernst H.
Wityshyn Michael
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