Abstract: The subject invention relates to a method of preparing a tire inner surface to attain better adhesion of balance pads, puncture sealants, and noise reduction foams. In this method a strip of multi-axially stretchable film is adhered to the inner surface of an uncured tire with a pressure-sensitive adhesive. Then a release agent coating is applied to the film strip on the inner surface of the uncured tire which is subsequently cured in a suitable mold at an elevated temperature. The cured tire is then removed from the mold and after allowing the cured tire to cool the annular circumferential film strip is removed from the inner surface of the tire to provide a circumferential release coating-free tire inner surface onto which balance pads, puncture sealants, and noise reduction foams can be adhered.

Abstract: A method of making a tire comprising the steps of providing a core; forming a first layer of ply by winding a strip of one or more rubber coated cords onto the core in a geodesic pattern extending from a first shoulder to a second shoulder opposite said first shoulder and being tangent to the bead at a location between said first shoulder and said second shoulder.

Abstract: A pneumatic tire using, as an inner liner layer, a thermoplastic elastomer comprising a thermoplastic resin matrix, in which a rubber component is dispersed a surface of the inner liner layer is covered with a protective layer, whereby a weathering resistance, damage resistance and fatigue resistance of the film liner of the inner liner layer at the time of tire storage are improved.

Abstract: The invention relates generally to a pneumatic rubber tire which contains an outer, annular, circular groove which contains a flexible tube bonded to the walls of the groove.

Abstract: According to a method for manufacturing a pneumatic tire of the present invention using a rigid core, high-speed durability may be improved. The present invention comprises manufacturing a green tire in which the green tire is manufactured by adhering tire component members in sequence onto the rigid core. The manufacturing of the green tire comprises forming a band ply in which a band forming member is spirally wound on the rigid core to form the band ply, the band forming member being configured by a band cord, or a narrow band-shaped strip coated with a topping rubber. In the formation of the band ply, the bend forming member is heated to a temperature of above 100 deg. C. while being wound spirally with the bend forming member being extended by at not less than 0.5%.

Abstract: A pneumatic tire provided with a resin film at an outer surface of the tire side portion to be able to be exfoliated therefrom by pasting a smooth resin film having a melting point equal to or higher than 23° C., a Young's modulus equal to or larger than 2.5 GPa and a thickness of 10 through 150 ?m to an outer surface of a side portion of an unvulcanized tire and vulcanizing and molding the unvulcanized tire in a state of pasting the resin film.

Abstract: A pneumatic radial tire includes: at least one carcass layer suspended across left and right bead parts; a belt layer arranged on an outer circumferential side of the carcass layer; and a tread arranged on an outer circumferential side of the belt layer. The tread has a laminated structure in which a thermoplastic film layer of a thermoplastic resin or a thermoplastic elastomer composition is interposed between a tread-side rubber layer and a belt layer-side rubber layer. The thermoplastic elastomer composition is obtained by blending an elastomer in a thermoplastic resin. A process for producing a retreaded tire includes the steps of: forming a base tire from the pneumatic radial tire by softening the thermoplastic film layer through heating so as to separate and remove the tread-side rubber layer, the pneumatic radial tire having the tread worn away; and subsequently bonding a new tread-side rubber layer onto the base tire.

Abstract: The present invention generally relates to wireless flexible hose articles and methods. Some embodiments include low-mass hoses. Furthermore, some embodiments can comprise methods for making and/or using such hose articles.

Abstract: A method for producing a pneumatic tire in which an air-in phenomenon between an inner liner and a carcass is avoided by preventing adhesion of the inner liner to a bladder includes the following steps. A green tire using, as an inner liner, a polymer laminate including a first layer having a thickness of 0.05 mm to 0.6 mm made of a styrene-isobutylene-styrene triblock copolymer, and a second layer composed of at least one of a second A layer made of a styrene-isoprene-styrene triblock copolymer and a second B layer made of a styrene-isobutylene diblock copolymer, the second layer having a thickness of 0.01 mm to 0.3 mm, is prepared. The green tire is mounted in a mold for vulcanization with pressurization by the bladder to obtain a vulcanized tire. The vulcanized tire is cooled at 50 to 120° C. for 10 to 300 seconds.

Abstract: An object of the present invention is to provide a production method of a pneumatic tire in which a generation of a tread groove crack is prevented while maintaining productivity and tire performance, and a pneumatic tire produced by this production method. The production method of a pneumatic tire having a tread composed of a predetermined rubber composition for a tread comprises: step A of molding an unvulcanized rubber composition for a tread to obtain a tread shape unvulcanized rubber composition provided with a concave profile, a step B of laminating the tread shape unvulcanized rubber composition obtained in the step A with other unvulcanized rubber compositions for tire member to obtain an unvulcanized tire, and a step C of vulcanizing the unvulcanized tire obtained in the step B in a vulcanization mold.

Abstract: A method of forming a tire innerliner having a cylindrical inner rubber layer and a cylindrical film formed of a thermoplastic resin or a thermoplastic elastomer composition having a thermoplastic resin and an elastomer blended therewith. The cylindrical film is disposed radially outwardly of the cylindrical inner rubber layer. The method includes the following steps: wrapping an unvulcanized rubber layer cylindrically around a building drum to form the cylindrical inner rubber layer; and subsequently wrapping a sheet-shaped film formed of a thermoplastic resin or a thermoplastic elastomer composition having a thermoplastic resin and an elastomer blended therewith cylindrically around the cylindrical inner rubber layer, which is already wrapped around the building drum, to form the cylindrical film. The unvulcanized rubber layer constituting the cylindrical inner rubber layer is a strip-shaped rubber layer, and the cylindrical inner rubber layer is formed by spirally winding the strip-shaped rubber layer.

Abstract: The present invention provides a tire that can achieve vulcanization at low temperatures and in a short time, and has high peeling resistance, a method for manufacturing thereof, and a rubber member for repair used in the method for manufacturing the tire. The method for manufacturing a tire of the present invention is a method for manufacturing a tire by adhering an adherend tire member and a tire member through a rubber composition for adhesion, the method comprising using an unvulcanized rubber composition containing, per 100 parts by mass of a rubber component, 0.1 parts by mass to 4.0 parts by mass of xanthate based compound, and 0.1 parts by mass to 5.0 parts by mass of sulfur as the rubber composition for adhesion.

Abstract: During building of a carcass structure, a liner is applied around an outer surface of a primary drum by: circumferentially winding at least one pair of sheets of elastomeric material around an outer surface of the primary drum, which sheets are axially spaced apart from each other so as to form respective axially external portions of the liner; laying at least one continuous elongated element of elastomeric material in the form of a plurality of mutually approached coils around the outer surface of the primary drum in order to form a central portion of the liner having axially external edges that are each associated with an axially internal edge of one of said axially external portions of the liner.

Abstract: A method of preparing a tire inner surface includes providing an uncured tire having an inner surface, placing a strip of multi-axially stretchable blend film on a circumferential surface of the inner surface, wherein one end of the overlapped splice joined by a pressure-sensitive adhesive for easy removal of the strip from the inner surface, applying a release agent coating to the annular, circumferential film strip and the inner surface of the uncured tire, shaping and curing the uncured tire with the release coating on the annular circumferential film strip and inner surface in a suitable mold at an elevated temperature, removing the cured tire from the mold and allowing the cured tire to cool, and removing the annular circumferential film strip with its release coating by use of a film strip to provide a circumferential release coating-free tire inner surface of the cured tire for adhering balance pads, puncture sealants, and noise reduction foams.

Abstract: A tire comprising an overlay ply wherein (i) the shoulder section of the overlay comprises an elastomer and short polymeric or non-polymeric reinforcing fibers present in an amount of from 0.1 to 10 parts fiber per hundred parts of elastomer, the short fibers having a tenacity of at least 2 grams per dtex, a modulus of at least 10 grams per dtex and a length of from 0.1 to 8 mm and wherein the fibers are aligned substantially parallel to each other in a controlled angle of orientation within the overlay wherein the orientation is selected such that it decreases tire noise, and (ii) the section of overlay in the crown of the tire comprising cords of continuous filament polymeric fibers or continuous strands of metal or combinations thereof, the cords being aligned in a circumferential direction around the tire.

Abstract: The present invention is a strip of a thermoplastic elastomer composition to be wound spirally on a cylindrical drum to form an inner liner for a tire. The strip is composed of a layer stack of a first layer made of a thermoplastic elastomer composition containing 0.1 part by mass to 50 parts by mass of an organic derivative of clay mineral relative to 100 parts by mass of a styrene-isobutylene-styrene triblock copolymer, and a second layer made of a thermoplastic elastomer composition containing at least one of a styrene-isoprene-styrene triblock copolymer and a styrene-isobutylene diblock copolymer. The strip has a strip main body with a thickness of 0.05 mm to 1.0 mm and ear portions with a thickness thinner than the thickness of the strip main body and a width of 0.5 mm to 5.0 mm disposed on opposite sides thereof.

Abstract: The invention relates to an assembly and a method for manufacturing a green tyre and/or a green air spring. The device comprises a template having a shaping surface (2) for placing a tyre component thereon comprising a layer of unvulcanized rubber for the green tyre and/or green air spring. The shaping surface (2) is provided with an attachment surface (9) for at least temporarily retaining at least a leading section of the tyre component. The attachment surface (9) comprises a number of adhering surface sections (3) with non-adhering surface sections (4) placed in between them, wherein the non-adhering surface sections (4) are at least partially receded with respect to the adhering surface sections (3). In one embodiment the attachment surface (9) comprises a substantially saw-tooth-shaped cross-section.

Abstract: Provided is a method of manufacturing a pneumatic tire, which causes no blister to take place during vulcanization molding even in a case where a cylindrical thermoplastic resin film is used as an air-permeation preventing layer while a rubber sheet material laminated onto the thermoplastic resin film has a thickness of 0.5 mm or more. The method includes the steps of: winding an unvulcanized rubber sheet material with a thickness of 0.5 mm or more around a cylindrical thermoplastic resin film which is placed around a making drum; and splicing one end portion and the other end portion of the rubber sheet material together so that the spliced part is step-shape. The method is characterized in that one end portion of the rubber sheet material is spliced onto the other end portion thereof with an auxiliary rubber sheet interposed between a step part of the spliced part of the rubber sheet material and the thermoplastic resin film, the auxiliary rubber sheet being thinner than the thermoplastic resin film.

Abstract: In the manufacture of a tire, a belt structure is made by means of strip-like segments or elements, each comprising parallel cords embedded in an elastomeric layer, sequentially laid along the circumferential extension of a toroidal support, in such a manner that: each strip-like element is laid in a laying trajectory defining, at each point, a laying angle; at each point of the laying trajectory a laying gap is formed between adjacent strip-like elements, the laying trajectory being formed starting from preselected laying angles on the shoulder and on the crown of the tire, the laying gap between adjacent strip-like elements varying along at least one section of the laying trajectory between crown and shoulder so as to cause variation of the laying angle and to obtain the preselected angles on the shoulder and on the crown.

Abstract: A method for protecting a tyre against punctures includes: providing a self-sealing layer; providing an anti-tack layer that includes particles having a shape factor higher than 5; forming a tyre such that the self-sealing layer is built into the tyre during manufacture of the tyre; and applying the anti-tack layer a radially internal surface of the self-sealing layer.

Abstract: A tire with a built-in self-sealing layer includes an external rubber tread, a carcass reinforcer, a gastight layer arranged towards an inside location relative to the carcass reinforcer, an anti-tack layer arranged furthest towards the inside, location and a self-sealing layer adjacent to the anti-tack layer and arranged towards the inside location relative to the gastight layer. The anti-tack layer includes particles with a shape factor (F=L/E) higher than 5. L represents a first dimension, and E represents a second dimension normal to the first dimension, with L being a longer dimension than E.

Abstract: A method for manufacturing a pneumatic tire may include lap-splicing end parts of a laminate sheet in which a sheet obtained from a thermoplastic resin or a thermoplastic resin composition of a thermoplastic resin blended with an elastomer is laminated with a rubber that undergoes vulcanizing adhesion with the thermoplastic resin or the thermoplastic resin composition. After the sheet obtained from the thermoplastic resin or the thermoplastic resin composition is cut into lengths to be supplied for lap-splicing, and at a stage before tire vulcanization molding, distal end parts of the sheet obtained from the thermoplastic resin or the thermoplastic resin composition are sharpened with a thermal treatment.

Abstract: Disclosed herein is a process to produce a laminate comprises coating at least an outer surface of a dynamically vulcanized alloy film with an adhesive composition to produce the laminate, wherein the adhesive layer has a thickness of less than or equal to about 5 microns, wherein the dynamically vulcanized alloy film comprises a thermoplastic elastomer composition containing a thermoplastic resin as a continuous phase, and a rubber composition dispersed therein, as a dispersed phase. A laminate and a pneumatic tire comprising the laminate are also disclosed.

Abstract: This invention provides a natural solvent-based adhesive composition for tires; a mix to prepare adhesive compositions; a preactivation compound for tires; processes to obtain said compositions or mix; or the use of said compounds in bonding tires; and bonding and preactivation processes for tires. The objects of the invention provide industrial solutions that, while introducing a considerable reduction in environmental impact in their preparation and use, provide better health conditions for the professionals who work in the tire bonding industry.

Abstract: A tire having aggressive tread features with improvements in uniformity that can also improve endurance is provided along with a method and apparatus for manufacturing such a tire. The tire and its manner of manufacture can achieve a reduction or elimination of certain non-uniformities that can occur during the molding of large tread blocks. The reduction or removal of these non-uniformities can improve temperature performance to provide increased tire endurance.

Abstract: A self-balancing pneumatic tire is provided having a built-in balancing gel system. In one embodiment, the tire, before cure, includes a green pneumatic tire assembly having an uncured tread defining an outermost layer; a first barrier layer; a second barrier layer situated adjacent the first barrier layer and intermediate the first barrier layer and the tread; and first and second gel precursors. The gel precursors are non-flowable prior to cure but flowable after cure. The gel precursors are respectively contained within spaced-apart first and second circumferential regions defined by confronting, non-contacting surfaces of the first barrier layer and the second barrier layer, each circumferential region further situated proximate opposing sidewalls of the tire and having a width of about 5 percent to about 25 percent of a final tread width obtained upon curing of the uncured tire assembly. In one example, the first and/or second barrier layers can be discontinuous.

Abstract: A puncture sealant laminate for prevention of a flat tire may include three layers of sealant material separated by two layers of non-sealant material. The two layers of non-sealant material may prevent the three layers of sealant material from contacting each other and they may have first and second ends that attach to rubber in the tire that is not part of the puncture sealant laminate.

Abstract: A pneumatic tire includes: an annular structure that is cylindrical and metal where at least an outer side surface in the radial direction is a rough surface; a tread rubber layer that will become a tread portion provided along a circumferential direction of the annular structure on an outer side of the annular structure; and a carcass portion including fibers covered with rubber, provided on at least both sides in a direction parallel to a center axis of the cylindrical structure including the annular structure and the tread rubber layer.

Abstract: The laminate according to the present invention includes a thermoplastic resin film-containing layer and a rubber layer, in which the rubber layer contains a modified diene polymer, and the rubber layer has a dynamic storage modulus E? at ?20° C. of 1.0×105 to 1.0×108 Pa. This laminate can improve the resistance to the fractures and the cracks of the inner liner.

Abstract: The present invention is directed to a method of constructing a tire, comprising: constructing a coated filament, the coated filament constructed by coating a filament with a coating material, the coating material comprising at least one substance dispersible in an uncured rubber compound; encasing the coated filament into containment within an uncured flexible tire component, the coated filament extending between an air inlet and an air outlet cavity in the pre-cured flexible tire component; building on a tire building drum a green tire carcass from uncured tire components including the uncured flexible tire component and encased coated filament; curing the green tire carcass into a cured finished tire including the flexible tire component containing the coated filament; removing the filament from the cured flexible tire component to leave within the flexible tire component a substantially unobstructed air passageway.

Abstract: Construction comprising a tie layer.

Abstract: The present invention provides a process for making silica-filled rubber masterbatch using silica hydrophobated with a trimethoxy silane coupling agent that is soluble in an alcohol-water solution containing at least about 70 wt % water. One embodiment uses a mixture of trimethoxy silanes, one or more of which react with rubber to bond the silica to the rubber, and one or more of which do not react with rubber, but do hydrophobate the silica. Hydrophobated silica is mixed with latex polymer and incorporated into rubber during coagulation of the latex, which is preferably coagulated with calcium chloride. The present invention further provides a process for making the trimethoxy silane coupling agents. Preferred trimethoxy silane coupling agents include bis-(3-trimethoxysilylpropyl)-disulfide and bis-(3-trimethoxysilylpropyl)-tetrasulfide.

Abstract: A run-flat pneumatic tire assembly includes a pneumatic tire having an elastomeric casing and a tire cavity formed therein. A longitudinally-extending and approximately planar length of strip material is helically arranged within the tire cavity to pre-stress the length of strip material for usage of the pneumatic tire during under-inflated and non-inflated conditions. A method of making a run-flat pneumatic tire assembly is also included.

Abstract: A smooth resin film including an ultraviolet ray absorbing agent is pasted to an outer surface of a side portion of an unvulcanized tire, the unvulcanized tire is vulcanized and molded in a state of pasting the resin film, thereby, a pneumatic tire provided with the resin film at the outer surface of the tire side portion to be able to be exfoliated therefrom is fabricated.

Abstract: A pneumatic tire is manufactured by vulcanizing the uncured tire formed by assembling uncured rubber tire components, at least one of which is made by winding a plurality of tapes around an axis while traversing the tapes along the axis, wherein the number of stroke of the traversing of the tapes is increased in a thick portion than in a thin portion of the tire component, and an angle between one end and the other end of each of the tapes around said axis is at most 90 degrees. The respective midpoints between the one end and the other end around the axis, of the tapes are sifted from each other in the circumferential direction of the tire.

Abstract: In a process for building tyres for vehicle wheels, a carcass sleeve is arranged on a shaping drum including two half-drums and two supports. Each support is operatively associated with one of the half-drums and carries a plurality of turning-up levers having free ends positioned close to the respective half-drum. Two annular anchoring structures are disposed around the carcass sleeve and each of the two supports is locked to the respective half-drum by interposing only stiff mechanical elements in mutual contact between the support and the half-drum. The carcass sleeve is shaped in a toroidal conformation, by setting a threaded shaft in rotation and moving the half-drums dose to each other.

Abstract: The flexible tubular moulded body (10) comprises an unprofiled or profiled straight or bent shaped and a circumferential wall (11) provided with a corrugated profile (12), which is formed from a strength support insert embedded in a thermoplastic material comprising cord surfaces running in the longitudinal direction of the moulded body as pressure support elements and fixing threads running transversely to the threads and holding these in position.

Abstract: Provided is a method for manufacturing a pneumatic tire, including the steps of preparing a polymer layer stack formed of a first layer made of a styrene-isobutylene-styrene triblock copolymer and having a thickness of 0.05 mm to 0.6 mm and a second layer made of an epoxidized styrene-butadiene-styrene triblock copolymer and having a thickness of 0.01 mm to 0.3 mm, molding a raw tire with the polymer layer stack bonded to the inner side of the tire as an inner liner, arranging the raw tire in a mold and vulcanizing the tire under pressure from a bladder, and cooling a vulcanized tire at 50° C. to 120° C. for 10 seconds to 300 seconds.

Abstract: A run-flat pneumatic tire assembly includes a pneumatic tire having an elastomeric casing and a tire cavity formed therein. A longitudinally-extending and approximately planar length of strip material is helically arranged within the tire cavity to pre-stress the length of strip material for usage of the pneumatic tire during under-inflated and non-inflated conditions. A method of making a run-flat pneumatic tire assembly is also included.

Abstract: A forming method of an annular rubber member comprises the step of forming a laminated body in which a plurality of layers overlap in a thickness direction, by continuously extruding a sheet-like rubber via a mouth piece provided in a leading end side of an extruder, and winding the extruded sheet-like rubber around a rotation support body. The layers having different widths are overlapped by changing an opening width of the mouth piece, at a time of changing from a stage of forming the layer which is positioned relatively at an inner peripheral side, to a stage of forming the layer which is positioned relatively at an outer peripheral side.

Abstract: The present invention enhances noise performance and anti-uneven wear performance. A pneumatic tire 1 includes a belt layer 7 including at least one belt ply in which belt cords 15 are arranged at an angle of 10 to 40° with respect to a tire equator C. A tread pattern formed on a surface of the tread portion 2 includes a pitch line 22 in which at least two kinds of pattern-constituting units 21 having different pitches in a circumferential direction of the tire are arranged in the circumferential direction of the tire. The belt cords 15 are arranged relatively densely on an inner side of the pattern-constituting unit 21 having a small pitch, and relatively thinly on an inner side of the pattern-constituting unit 21 having a large pitch.

Abstract: The present invention comprises tire treads having sipes or other voids formed of non-curable inserts, as well as methods for forming sipes or other voids within a tread using non-curable inserts and apparatus for performing the same. Such methods include providing an uncured tread having a width and a thickness bounded by an outer side and a bottom side. Such methods further include providing a strip of non-curable material, the strip having a width and a length. Furthermore, such methods include inserting the strip of non-curable into the tread thickness from the tread outer side and to a predetermined depth within the tread thickness to form a void-forming insert within the tread thickness. Finally, these methods include curing the tread with the non-curable strip arranged within the tread thickness. The inserts may be folded, which may occur as the strips are inserted into the tread or prior to such insertion.

Abstract: In the method for producing a tire casing of the present invention by vulcanizing a casing portion comprising a belt portion composed of multiple belt layers, a side portion and a bead portion and also comprising at least any one of a tread casing and a belt under-cushion rubber, a rubber composition containing carbon black having a nitrogen adsorption specific surface area of from 25 to 130 m2/g as defined in JIS K 6217-2:2001 in an amount of from 25 to 45 parts by mass per 100 parts by mass of the rubber component therein is used as at least the rubber composition constituting the tread casing to be a part of the tread portion or the rubber composition constituting the belt under-cushion rubber, and accordingly, the rolling resistance of the tire can be reduced and the durability thereof can be improved.

Abstract: A pneumatic tire includes an inner liner layer formed from a laminate sheet obtained by laminating: a sheet made from a thermoplastic resin or a thermoplastic resin composition which is a blend of the thermoplastic resin and an elastomer; and a rubber bonded by curing to the thermoplastic resin or the thermoplastic resin composition. The pneumatic tire avoids occurrence of cracks near a splice portion of the inner liner layer after the pneumatic tire starts to be used for driving, and thereby achieves excellent durability. In the tire, an inner liner layer is formed by lap-splicing end portions of a laminate sheet which is obtained by the laminating A sheet with end portions each having a tip subjected to a tip sharpening process is used as the sheet made from the thermoplastic resin or the thermoplastic resin composition which is the blend of the thermoplastic resin and the elastomer.

Abstract: A pneumatic tyre includes an internal sealing layer, which partially delimits an internal volume (V) of the pneumatic tyre, and a self-sealing layer formed of at least a self-sealing product. The self-sealing layer is positioned radially on an inside region with respect to the internal sealing layer, and has a creep resistance indicator that increases axially from a median plane outwards, i.e., towards outside of the pneumatic tyre.

Abstract: The present invention is a method for producing a tire casing by vulcanizing a casing portion comprising a belt portion composed of multiple belt layers, a side portion and a bead portion, and the method includes at least one method selected from the following (a) and (b). The invention also provides a production method for a tire casing and a tire having improved low-heat-generation property and durability. Method (a) in which a rubber composition containing carbon black having a nitrogen adsorption specific surface area of from 38 to 99 m2/g as defined in JIS K 6217-2:2001, in an amount of from 40 to 60 parts by mass relative to 100 parts by mass of the rubber component therein is used as the belt wedge rubber of the belt portion.

Abstract: A pneumatic tyre includes an internal sealing layer, which partially delimits an internal volume of the pneumatic tyre, and a self-sealing layer formed of a self-sealing product. The self-sealing layer is positioned radially on an inside region with respect to the internal sealing layer, and has a creep resistance indicator that decreases radially outwards, i.e., towards outside of the pneumatic tyre.

Abstract: The strip is formed of a single layer including a first layer arranged in a tire innermost layer or composite layers of the first layer and a second layer disposed adjacently to a carcass ply and made of a thermoplastic elastomer composition. The first layer is a thermoplastic elastomer composition containing a styrene-isobutylene-styrene block copolymer and a tackifier, a butyl-based rubber and a natural rubber. The strip has a strip main body having a thickness (T1) of 0.02 to 1 0 mm and ear portions formed on opposite sides of the strip main body. The ear portions have a thickness (T2) smaller than the thickness (T1) and a width (W2) of 0.5 mm to 5.0 mm.

Abstract: Provided is a pneumatic tire and a manufacturing method therefor which allow a reduction in a cavity resonance sound without complicated manufacturing steps. A pneumatic tire of the present invention includes: a pair of bead portions; a carcass layer bridged between the pair of bead portions; and an inner liner layer disposed at a tire inner surface side of the carcass layer, the inner liner layer being made of a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer. The inner liner layer has a laminated structure including multiple film layers having different melting points of the thermoplastic resin from each other. The film layer having the lowest melting point of the thermoplastic resin is foamed to form multiple convex portions in the tire inner surface.

Abstract: A method for manufacturing a pneumatic tire including: (a) an assembly step of bonding the inner liner and an unvulcanized rubber sheet with end portions thereof in a width direction being displaced from each other in the range of 50 mm to 500 mm in the width direction to manufacture a laminate; (b) a cutting step of cutting the laminate to have a constant length corresponding to a width of a drum to manufacture a cut sheet; and (c) a joining step of winding the cut sheet on entire circumference of the drum such that a cut surface thereof extends in a circumferential direction of the drum and the inner liner is disposed on an inner surface side, and joining the end portions of the inner liner and joining the end portions of the unvulcanized rubber sheet.