Puncture-sealing tire

DETAILED DESCRIPTION A puncture-sealing tubeless pneumatic tire has a soft (25-40 Shore A durometer), vulcanized inner layer consisting of cis-polyisoprene rubber and/or natural rubber.
The inner layer has a thickness in the range of about 1 to about 50 percent of the total tire thickness, and may extend completely across the inside of the tire from one bead to the other bead, but is preferably only under the tread area of the tire (where punctures are most likely to occur).
The sealant layer is normally attached to the air-impervious liner such that the sealant is in contact with the inflation gas but can be positioned between the innermost carcass-reinforcement ply and the air-impervious liner.
The sealant layer (or the air-impervious liner if it is next to the inflation gas) may be coated with a polyolefin polymer capable of flowing into punctures at operating temperature and said polyolefin polymer is capable of adhering to the sealant layer by means of surface tension alone.