Pneumatic tire and method for producing same
AssigneeSumitomo Rubber Industries, Ltd.
InventorsNaoki YUKAWA, Satoshi YAMADA, Mutsuki SUGIMOTO
Life of this patent
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Abstract
Provided are a pneumatic tire in which the attachment start portion of the sealant does not easily peel off, and a method for producing the pneumatic tire. The present invention relates to a pneumatic tire including a generally string-shaped adhesive sealant, the sealant being continuously and spirally attached at least to the inner periphery of the tire that corresponds to a tread portion, the sealant having a wider portion at at least one of the longitudinal ends thereof, the wider portion having a width larger than that of the longitudinally adjoining portion.
Claims9
A pneumatic tire, comprising a generally string-shaped adhesive sealant,
- the sealant being continuously and spirally attached at least to an inner periphery of the tire that corresponds to a tread portion,
- the sealant having a wider portion at at least one of longitudinal ends thereof, the wider portion having a width larger than that of a longitudinally adjoining portion.
A method for producing a pneumatic tire, the method comprising
- discharging a generally string-shaped adhesive sealant from a nozzle to continuously and spirally attach the sealant at least to an inner periphery of a tire that corresponds to a tread portion,
- the sealant being attached under conditions where a distance between the inner periphery of the tire and a tip of the nozzle is adjusted to a distance d1 and then to a distance d2 larger than the distance d1 so that at least one of longitudinal ends of the sealant forms a wider portion having a width larger than that of a longitudinally adjoining portion.
Dependencies are inferred from the claim text.