Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-02-19
1978-06-20
Klein, David
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156129, 156275, 156321, 156322, B29H 1736
Patent
active
040960080
ABSTRACT:
An improved method of manufacturing or retreading pneumatic tires is disclosed wherein a precured tread component is bonded to a tire carcass or casing primarily by utilization of the residual heat in the precured tread component. The method includes the steps of molding or vulcanizing the tread in an apparatus such as a mold or other conventional type device designed to form and vulcanize a tire tread with or without the tread design. The method also includes providing the new tire carcass in finished form or a buffed casing, except for the tread, and conveying the precured tread at an elevated temperature to the tire carcass and applying the same thereon. In applying the tread to the carcass, the carcass is mounted on a mechanism capable of rotating the tire and precisely guiding the heated tread onto the carcass, and also includes stitching the tread to the carcass and using an intermediate bonding medium which is known in the trade as cushion rubber. Essentially the invention discloses utilization of the residual heat of the tread in the bonding zone to cure the cushion gum and effectuate a bond between the tread and the tire. Modifications of the invention are also disclosed wherein a prevulcanized tread strip is stored and subsequently reheated before application to the tire, as well as methods of preheating known re-enforcing material to create the bonding heat, as well as utilizing electric conductive means to accomplish the bonding of the tread to the carcass.
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Buehrle Victor E.
Kittle John E.
Klein David
Taylor Reese
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