A strip of a thermoplastic elastomer to be wound spirally on a cylindrical drum for forming an inner liner for a tire having a shape close to a finished sectional shape is provided. The strip is formed of composite layers of (A) a first layer made of a styrene-isobutylene-styrene triblock copolymer and (B) a second layer containing at least one of a styrene-isoprene-styrene triblock copolymer and a styrene-isobutylene diblock copolymer. The strip further has a strip main body and ear portions arranged on opposite sides thereof. The strip main body has a thickness (T1) of 0.05 mm to 1.0 mm. The ear portions have a thickness (T2) thinner than the thickness (T1) of the strip main body and a width (W2) of 0.5 mm to 5.0 mm. This ribbon-shaped strip reduces unevenness of the surface of a sheet formed by the opposite ends of the strip when manufacturing an inner liner.

This invention reveals a method of manufacturing a puncture sealing pneumatic rubber tire which comprises: (1) building an unvulcanized tire including a circumferential rubber tread, a supporting carcass therefor, two spaced beads, two rubber sidewalls connecting said beads, an inner liner and a solid sealant formulation layer disposed inwardly from said supporting carcass and outwardly from said inner liner, wherein said solid sealant formulation layer is comprised of (a) polyisobutylene, (b) a peroxide, and (c) a reinforcing filler, wherein the polyisobutylene is present in the sealant layer at a level of at least 50 weight percent; and (2) shaping and vulcanizing said tire in a tire mold under conditions of heat and pressure and simultaneously forming in situ a puncture sealant layer in said tire by both crosslinking and partially depolymerizing said polyisobutylene rubber in said sealant layer formulation.

With respect to a laminate of a film formed of a thermoplastic resin or thermoplastic elastomer composition and a layer formed of a rubber composition in which an epoxidized natural rubber is blended, the adhesion between the film and the layer of the rubber composition is improved without using a large amount of the epoxidized natural rubber. A laminate of a film formed of a thermoplastic resin or thermoplastic elastomer composition and a layer formed of a rubber composition, said laminate being characterized in that: 5-60% by mass of a rubber component contained in the rubber composition is composed of an epoxidized natural rubber and 20-50% by mass of the rubber component is composed of a butadiene rubber; and the rubber composition contains an unsubstituted or substituted aromatic carboxylic acid having a pKa of 1.5-4.0 in an amount of 0.5-5 parts by mass per 100 parts by mass of the rubber component.

Provided is an inner liner for a pneumatic tire including no less than 8 resin-layers, the resin-layer having a layer A constituted with a resin composition containing a resin having gas barrier properties, and a layer B that is adjacent to the layer A and is constituted with a resin composition containing an elastomer, an extensional viscosity .sub.A of the resin composition of the layer A, and an extensional viscosity .sub.B of the resin composition of the layer B as determined at a predetermined temperature both being no less than 1,000 Pa.Math.s, and an extensional viscosity ratio .sub.A/.sub.B being no less than 0.2 and no greater than 10.

There is provided a polymer film which includes: a base film layer including a polyamide-based resin having a particular relative viscosity and a copolymer including a polyamide-based segment and a polyether-based segment having a specific content; and an adhesive layer formed on at least one side of the base film layer, wherein a ratio of the melt viscosity of the copolymer to the melt viscosity of the polyamide resin is 0.65 to 1.2 at a shear rate of 1000 s.sup.1 and a temperature of 260 C.

The present invention relates to a pneumatic tire having a non-spliced film innerliner comprised of a plurality of film layers where said film layers are of varied film moduli physical properties.

The present invention is directed to a pneumatic tire comprising a carcass and an innerliner in direct contact with the carcass, the innerliner comprising: a film comprising a blend of a polyamide, an -olefin graft copolymer, and an ionomer; and an adhesive layer disposed between the film and the carcass, the adhesive layer comprising: a polymeric amine and a resorcinol-formaldehyde-latex (RFL) adhesive. The invention is further directed to a method of building a pneumatic tire comprising the steps of: exposing an innerliner film to a corona discharge to create a corona treated film, the innerliner film comprising a blend of a polyamide, an -olefin graft copolymer, and an ionomer; disposing a polymeric amine onto the corona treated film to create an amine treated film; disposing a resorcinol-formaldehyde-latex (RFL) adhesive on the amine treated film to create a treated innerliner film; and incorporating the treated innerliner film into a tire build such that the treated innerliner film is in direct contact with a tire carcass.

A polymer electrolyte membrane assembly includes a polymer electrolyte membrane layer positioned between a first electrode and a second electrode. The polymer electrolyte membrane layer can be made from a composition including a polymer matrix, a plasticizer, and an ionic material. The polymer electrolyte membrane assembly may be utilized to harvest electrical energy by allowing the polymer electrolyte membrane assembly to bend to thereby produce a second ion concentration gradient different from an initial ion concentration gradient.

The present invention provides a tire innerliner film coated with a new rubber adhesive liquid containing a specific component in a specific admixing ratio, a pneumatic tire manufactured using the innerliner film, and a method of manufacturing a pneumatic tire. The method of manufacturing a pneumatic tire includes the steps of winding a tire building drum with an innerliner film coated with the above rubber adhesive liquid; and overlapping both ends of the innerliner film with each other to form a splice joint, wherein the rubber adhesive liquid is coated in a thickness of 10 to 100 m, and the splice joint has a length of 20 to 100 mm.

A pneumatic tire includes a carcass ply wound up from an inner side to an outer side around bead cores, chafers wound up from an outer side to an inner side around the bead cores, and an inner liner rubber which is arranged in an inner side of the carcass ply, wherein a squeegee rubber having a higher modulus than the inner liner rubber is provided closer to the inner liner rubber side than the chafers between the carcass ply and the inner liner rubber, and the squeegee rubber is arranged so as to cover inside wound-up ends of the chafers, and is provided with a thick portion which is thicker than the inner liner rubber, and thin portions which are arranged respectively in an inner side and an outer side in the tire diametrical direction of the thick portion and are thinner than the inner liner rubber.