The method of this invention provides a simple and inexpensive method for manufacturing self-sealing pneumatic rubber tires of the tubeless type having a higher degree of uniformity than can be made utilizing conventional manufacturing procedures that are currently being practiced. In the practice of this invention a low viscosity sealant formulation, which would ordinarily be difficult to handle and build into an uncured tire, is encapsulated in a stiff rubber formulation. This makes it relatively easy to build the sealant layer into the tire since the low viscosity sealant formulation is contained with the more rigid solid material. The low viscosity sealant material requires little and preferably no depolymerization to act effectively as a sealant. Accordingly, it does not need to be depolymerized with a peroxide which causes off-gassing and the resultant tire uniformity and balance issues normally associated with polymer break down.

A tire is provided in which there is no detriment to the ease of work when fitting onto a rim and removing from a rim, even when the tire is provided with a sealing layer. A pneumatic tire (10) includes a tire frame member (12) formed in a circular shape and made of a resin, and a sealing layer provided by filling a cavity (34) formed inside the tire frame member (12) with a sealant (38).

The method of this invention provides a simple and inexpensive method for manufacturing self-sealing pneumatic rubber tires of the tubeless type having a higher degree of uniformity than can be made utilizing conventional manufacturing procedures that are currently being practiced. In the practice of this invention a low viscosity sealant formulation, which would ordinarily be difficult to handle and build into an uncured tire, is encapsulated in a stiff rubber formulation. This makes it relatively easy to build the sealant layer into the tire since the low viscosity sealant formulation is contained with the more rigid solid material. The low viscosity sealant material requires little and preferably no depolymerization to act effectively as a sealant. Accordingly, it does not need to be depolymerized with a peroxide which causes off-gassing and the resultant tire uniformity and balance issues normally associated with polymer break down.

The present invention provides a process of manufacturing envelope integrated tire comprising steps of: (a) placing a tread, at least one carcass ply, at least one inner liner having an inner surface and an outer surface; (b) joining a semi-vulcanized envelope between a surface of carcass ply and said inner surface of inner liner; (c) joining said surface of carcass ply and the tread of the envelope integrated tire; (d) joining a strengthening fabric on a side wall of said envelope integrated tire; (e) wrapping a bead to connect the envelope integrated tire to a rim of a wheel; (f) pasting through adhesive, curing and vulcanizing said carcass ply, inner liner and semi-vulcanized envelope on the tread to form an envelope integrated tire; (g) injecting a fluid inside said envelope through at least one injection valve; (h) fixing said injection valve to avoid any kind of leakage.

The present invention relates to a device for mounting tubeless tire comprising an elongated balloon having an opening attached to a bicycle tire valve. The balloon is fabricated from latex or any other suitable elastic material, and is filled with a tire sealant composition. Further, the ballon is designed to burst at a pressure of 15-40 psi.