Method for the treatment of cords for the reinforcing layers of pneumatic tires
AssigneeBridgestone Europe NV/SA
InventorsCristiano Pomposini, Giacomo Andreini
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Abstract
Method for the treatment of single-filament polyethylene terephthalate cords for the reinforcing layers of a pneumatic tyre comprising (a) an adhesive solution coating step, wherein the single filament cord is immersed in an adhesive solution; (b) a drying step, wherein the cord covered in adhesive resin is held within a drying oven at a temperature of between 12° and 180° C.; and (c) a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 23° and 260° C. for a period of between 30 and 90 seconds. During the thermobonding step, the single filament cord is subjected to a tension of between 8 and 12 mN/dtex.
Claims7
A method for treatment of single filament cords for reinforcing layers of a pneumatic tire, said method comprising:
- an adhesive solution coating step, wherein a single-ply cord comprising a single filament is immersed in an adhesive solution;
- a drying step, wherein the single-ply cord covered in adhesive resin is held in a drying oven at a temperature of between 12° and 180° C.;
- and
- a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 23° and 260° C. for a period of between 30 and 90 seconds,
- wherein during said thermobonding step a tensile load of between 8 and 12 mN/dtex is applied to the single filament of the single-ply cord.
A method for treatment of single filament cords for reinforcing layers of a pneumatic tire, said method comprising:
- an adhesive solution coating step, wherein a single filament cord is immersed in an adhesive solution;
- a drying step, wherein the cord covered in adhesive resin is held in a drying oven at a temperature of between 12° and 180° C.;
- and
- a thermobonding step wherein the cord, proceeding from the drying step, is arranged within an oven at a temperature of between 23° and 260° C. for a period of between 30 and 90 seconds,
- wherein during said thermobonding step the single filament cord is subjected to a tension ranging from about 8.9 mN/dtex to about 10.3 mN/dtex.
Dependencies are inferred from the claim text.