Abstract: A polyamide resin composition of the present invention comprises: approximately 100 parts by weight of a polyamide resin comprising approximately 5 to 40 weight % of an aromatic polyamide resin and approximately 60 to 95 weight % of an aliphatic polyamide resin; approximately 30 to 70 parts by weight of an inorganic filler; and approximately 0.5 to 5 parts by weight of modified polyalkylene glycol. The modified polyalkylene glycol comprises an isocyanate group, a succinimide group or an epoxy group at one terminal of polyalkylene glycol. The polyamide resin composition exhibits excellent adhesiveness with other materials, excellent antifouling properties, impact resistance, stiffness, injection moldability and the like.

Abstract: A tire includes a pair of sidewall portions. An outer surface of at least one of the sidewall portions includes at least one concave mark recessed from a reference surface. The or each concave mark includes a bottom surface and an inner wall surface. The bottom surface includes a peripheral region and a main region. The peripheral region includes a shadow region and a non-shadow region. The shadow region and the non-shadow region are each formed with an uneven surface provided with minute protuberances. A width of the uneven surface of the non-shadow region measured in a direction perpendicular to a contour of the or each concave mark is smaller than a width of the uneven surface of the shadow region measured in a direction perpendicular to the contour.

Abstract: A hollow structure has a hollow body with an annular first space and at least one resonator. In the resonator there is formed an elongated second space with a pair of openings at two ends thereof. Each of the pair of openings opens inwardly toward the interior of the first space. The ratio of the length of a centerline of the second space to the length of a centerline of the first space is within a range of from 0.45 to 0.55. The second space is disposed in a curve along a circumferential surface of the first space and is shaped such that one of the two ends of the second space is folded back toward the other end.

Abstract: The present application relates to polymer compositions that provide barrier properties to oxygen, water vapor and/or hydrocarbons, to polymer film or sheet comprising the polymer composition and to their use in the manufacture or preparation of plastic material and/or plastic packaging. The present application also relates to a method of reducing oxygen water vapor and/or hydrocarbons permeability in plastic material and/or plastic packaging.

Abstract: The present disclosure relates to a tire having characters such as a brand name, a model name, etc. engraved on a sidewall thereof. The tire of the present disclosure includes a plurality of knurling units that includes: a first knurling part that is convex; a second knurling part that continues from a side of the first knurling part and is convex; a third knurling part that continues from a side of the second knurling part and is convex; and a fourth knurling part that is convex and is continuously connected from a side of the third knurling part to another side of the first knurling part.

Abstract: A rubber composition for covering an electromagnetic tag is proposed. The rubber composition may include a base rubber and a reinforcing filler comprising carbon black or boron nitride. The rubber composition may also include an insulating filler comprising at least one selected from silica, titanium dioxide, talc and calcium carbonate. The rubber composition may further include a reinforcing resin comprising an alkyl phenol formaldehyde resin or a resorcinol formaldehyde resin. Based on 100 parts by weight of the base rubber, the total amount of the reinforcing filler and the insulating filler may be 40 parts by weight or more, the amount of the insulating filler may be 10 parts by weight or more, and the amount of the reinforcing resin may be 0.5 parts by weight to 5 parts by weight.

Abstract: The invention relates to a pneumatic vehicle tire (L) having at least one acoustic element (8), wherein the tire (L), fitted on a wheel rim (16), encloses with the rim (16) a space inside the tire (17), wherein the acoustic element (8) comprising a body (12) and a layer (13) is arranged on an inner tire surface (10) involved in delimiting the space inside the tire (17), wherein the body (12) is arranged on the inner tire surface (10) and wherein the layer (13) is arranged on a surface region of the body (12) that is facing the space inside the tire (17). The object is to provide a tire which has improved acoustic properties with less use of porous noise-reducing material and the acoustic element of which is more resistant to pressure changes.

Abstract: A pneumatic tyre comprising an inner surface of the tyre, wherein a sound absorbing device component is connected to the inner surface of the tyre. The sound absorbing device component comprises a panel with a plurality of perforations and two sidewall sections, the sidewall sections being distinct from the panel, wherein the sidewall sections are connected to the inner surface of the tyre and arranged opposite of each other and wherein the panel is borne by the sidewall sections, thereby positioning the panel at a distance from the inner surface of the tyre and defining an inner volume enclosed by the panel, the sidewall sections and the inner surface. Furthermore, ?95 area-% of all perforations which permit access to the inner volume are located on the panel.

Abstract: The present invention generally relates to methods of printing articles using three-dimensional printing and other printing techniques, and to articles formed from such techniques, including the printing of articles of footwear containing particles. Certain embodiments are generally directed to composites comprising particles (e.g., reinforcing particles), for example, rubber particles. The particles may be used, for example, to increase slip or abrasion resistance. The composites may also contain polyurethanes or other compounds, e.g., to facilitate fabrication, e.g., using three-dimensional printing and other printing techniques. Other embodiments are directed to methods of making or using such articles. For example, in some embodiments, a composite may be prepared by mixing particles (e.g., reinforcing particles) with at least a first fluid and a second fluid within a nozzle, such as a microfluidic printing nozzle, which may be used to direct the resulting product onto a substrate.

Abstract: A run-flat tire is provided with: a carcass layer mounted between a pair of bead portions; and a run-flat reinforcing layer having a crescent-shaped cross-section, provided on a side wall portion on an inner side of the carcass layer in a tire width direction, a band-like sound absorbing member that extends in a tire circumferential direction adhering to a region of a tire inner surface corresponding to a tread portion, wherein the band-like sound absorbing member is locally arranged in at least one shoulder region within the region corresponding to the tread portion.

Abstract: Disclosed herein are automated systems and methods utilizing a plurality of specialized RFID tags incorporated within various tire manufacturing components (e.g., mold segments, mold container, bladder plates, tire presses, and extrusion dies) that are able to readily track tire manufacture and identify defect source(s) while concurrently being configured to the harsh processes and temperatures of tire manufacture.

Abstract: A pneumatic tyre (1) for decreasing running noise in a low temperature environment includes a noise damper (20) made of a porous material and fixed to a tyre inner cavity surface (16) of a tread portion (2). In the noise damper (20), hardness under a 25% compression load measured in accordance with Japanese Industrial standard JIS K6400-2 in an atmosphere of ?60 degrees Celsius is 110 kPa or less.

Abstract: A tire noise reduction device includes a sound absorbing member made of a porous material; and a band member disposed between the sound absorbing member and the tire inner surface and provided for attaching the sound absorbing member to a tire inner surface, the band member including chamfered portions on both surface sides at both ends in a width direction of the band member.

Abstract: A pneumatic tire is provided, including: an annular-shaped tread portion extending in a tire circumferential direction; a pair of sidewall portions disposed on both sides of the tread portion; and a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions; wherein a band-like sound absorbing member is adhered on an inner surface of the tread portion in the tire circumferential direction; and the band-like sound absorbing member has a plurality of cuts extending in two mutually intersecting directions, and of the cuts, a cut extending in one direction is a cut extending parallel with regard to a tire lateral direction or tire circumferential direction.

Abstract: A pneumatic tire includes: an annular-shaped tread portion extending in a tire circumferential direction; a pair of sidewall portions disposed on both sides of the tread portion; and a pair of bead portions disposed on an inner side in a tire radial direction of the sidewall portions; wherein a band-like sound absorbing member is adhered on an inner surface of the tread portion in the tire circumferential direction; and a plurality of cuts with an angle ? with regard to the tire circumferential direction within a range of 40°???90° are formed on both end portions in a lateral direction of the band-like sound absorbing member, and the cuts are connected only to one end portion in the lateral direction of the band-like sound absorbing member.

Abstract: A pneumatic vehicle tire of a radial type of construction with a profiled tread (1), sidewalls (3), bead regions (2) and an airtight inner layer (4), which forms the inner side (4a) facing the interior space of the pneumatic vehicle tire, ribs (6) being formed on the inner layer (4), having been imprinted in it by a heating bladder introduced into the interior of the tire during the vulcanizing of the pneumatic vehicle tire in a tire heating mold, and a sound absorber (5) being provided so as to extend in an annular manner on a circumferential region (4b) of the inner side (4a) opposite from the tread (1). Grooves (7) have been formed by the heating bladder at least in a partial region of the circumferential region (4b) of the inner layer (4a) on which the sound absorber (5) is provided.

Abstract: The invention relates to a tire comprising a circumferential tread having an outer tread surface and an inner innerliner surface; at least two spaced-apart beads; sidewall portions extending between the tread and the beads; and a belt-like foam noise damper having first and second terminal ends, wherein the noise damper lines the innerliner surface; wherein the noise damper is secured to the innerliner surface via an adhesive situated between the noise damper and the innerliner, wherein the terminal ends of the noise damper are cut at an angle of less than 90 degrees, overlap each other, and the overlapped second terminal end of the foam is joined to the first terminal end by the adhesive present underneath the second terminal end, and wherein the adhesive has weight in the range of 30 to 800 grams per square meter of foam surface.

Abstract: A rubber composition contains: (A) a polymer having a carbon-carbon unsaturated bond and exhibiting a value ? of 0.6 or more as obtained by the following formula (i): ?=(p+(0.5×r))/(p+q+(0.5×r)+s)??(i) wherein p, q, r, and s are the proportions by mole of structural units represented by the following formulae (1), (2), (3), and (4), respectively in the polymer: and (B) modified silica.

Abstract: A tire having a tread comprising at least two radially superposed portions which comprise a radially external portion intended to come into contact with ground during rolling, the radially external portion being made of a first rubber composition, and a radially internal portion made of a second rubber composition; wherein the first rubber composition is based on at least an elastomer matrix; and a reinforcing filler comprising between 40 and 200 phr of a reinforcing inorganic filler; wherein the second rubber composition is based on at least: an elastomer matrix comprising 20 to 70 phr of a first diene elastomer bearing at least one SiOR function, R being a hydrogen atom or a hydrocarbon radical, 20 to 70 phr of a second diene elastomer which is polyisoprene, and comprising no third diene elastomer or at most 20 phr; a reinforcing filler comprising a reinforcing inorganic filler.

Abstract: It has been unexpected found that silylated triglyceride oils can be incorporated into tire tread rubber formulations that include reinforcing fillers to provide improved wet traction characteristic, rolling resistance, and tread-wear without compromising cured stiffness (dry traction) and ultimate properties (chip/chunk resistance). The level of silica coupling agent needed in such formulation can also typically reduced. The present invention more specifically discloses a rubber formulation which is comprised of (1) a rubbery polymer; (2) a reinforcing filler, such as silica or carbon black; and (3) a silylated triglyceride oil. The silylated triglyceride oil will include silyl groups of the structural formula: —(CH2)n—Si(OR)3, wherein n represents an integer within the range of 1 to 8, and wherein R represents an alkyl group containing from 1 to 8 carbon atoms.

Abstract: Process and an apparatus for applying noise-reducing elements to a tyre for vehicle wheels that has a radially inner surface with a service area and having a circumferential dimension. The process determines the position in circumferential direction of the service area on the radially inner surface of the tyre, determines the position in circumferential direction of a target area on the radially inner surface of the tyre based on the position in circumferential direction of the service area, and applies a noise-reducing element at the target area. The position in circumferential direction of the service area is determined by circumferentially inspecting the radially inner surface of the tyre starting from a reference position, detecting the angular position of the service area with respect to the reference position and determining the position in circumferential direction of the service area based on the angular position and on the circumferential dimension of the radially inner surface of the tyre.

Abstract: A pneumatic tire according to the present technology is a pneumatic tire provided with a tread section, sidewall sections, and bead sections, a belt-shaped sound-absorbing member being bonded via an adhesive layer to an inner surface of the tire in a region corresponding to the tread section along the circumferential direction of the tire, wherein a bonding surface of the sound-absorbing member is provided with a bonded region that is bonded to the inner surface of the tire and an unbonded region that is not bonded to the inner surface of the tire, and the bonded region is divided by the unbonded region into a plurality of divisions along the circumferential direction of the tire.

Abstract: In a pneumatic tire, a sponge member extending in a tire circumferential direction is attached around an entire circumference of a tire inner peripheral surface of a tread portion. The sponge member includes at least: a first sponge layer; a second sponge layer laminated inward of the first sponge layer in a tire radial direction; and a third sponge layer laminated inward of the second sponge layer in the tire radial direction. Each of the first sponge layer and the third sponge layer has a smaller expansion ratio than an expansion ratio of the second sponge layer.

Abstract: A rubber composition has an improved rolling resistance and is based on at least a diene elastomer comprising mainly at least one isoprene elastomer; a reinforcing filler comprising from 15 to 70 phr of carbon black having a BET specific surface area of less than 70 m2/g, and/or a COAN of less than 90 ml/100 g, and from 5 to 20 phr of silica; a salt of an alkaline-earth, alkali or lanthanide metal; and a crosslinking system; in which composition the carbon black to silica ratio is greater than 1.

Abstract: Pneumatic tyre (1) comprising a carcass ply (11), two ring beads (12), a tread strip (10), a tread belt (15) comprising at least two tread plies (16), an innerliner (2) and an additional functional material layer (4,5) arranged between the innerliner (2) and the inner cavity (17) of the pneumatic tyre (1), wherein between the innerliner (2) and the layer of additional functional material (4,5) a net layer (3) is interposed, which facilitates the removal thereof during disposal at the end-of-life of the pneumatic tyre.

Abstract: The pneumatic tire of the present technology includes: a tread portion; sidewall portions; and bead portions. A pattern of grooves is formed on the tread portion, and a strip-shaped sound-absorbing member is bonded along the tire circumferential direction to a region of the tire inner surface corresponding to the tread portion via an adhesive layer. A first ground contact region is defined between the tire ground contact edge on one side in the tire width direction and the tire equatorial plane, and a second ground contact region is defined between the tire ground contact edge on the other side in the tire width direction and the tire equatorial plane. The sound-absorbing member is offset with respect to the tire width direction so that the centroid of a cross-section of the sound-absorbing member in a plane that includes a tire axis is located within the first ground contact region.

Abstract: A curing bladder (7) for a tire has a shape of revolution about a central axis and a flexible wall made of crosslinked rubber, the external surface of which is intended to come into contact with the internal surface of a green tire during curing, the external surface having a relief structure having a plurality of air evacuation channels. The relief structure has first channels forming air evacuation grooves (100) arranged at a distance of between 2 and 5 mm, and having a depth of between 0.4 and 1 mm, two adjacent grooves defining, between one another, an inter-groove zone (500) having second channels forming air channelling furrows (1000) made so as to communicate with one another and with at least one of the grooves (100), the furrows each having a depth of between 0.01 and 0.4 mm and being situated at a distance of between 0.2 and 1 mm from one another.

Abstract: The provided tire has excellent durability regardless of use in a high-humidity environment or contact with water, even though the framework member of the tire is made of a resin material. The resin material is made of a resin composition including 60 mass % or more of a polyamide resin formed by polymerizing an aliphatic diamine having 6 to 20 carbon atoms and an aliphatic dicarboxylic acid having 10 to 20 carbon atoms.

Abstract: Provided are a pneumatic tire where a band-shaped surface fastener extending in a tire circumferential direction is mounted on a tire inner surface, a cut portion composed of a group of a plurality of notches extending in a width direction of this surface fastener without traversing this surface fastener is formed in this surface fastener repetitively along the tire circumferential direction, the surface fastener is divided into a plurality of components by these notches, and the surface fastener is disposed on the tire inner surface in a state where the cut portion is stretched so the components are continuous in the tire circumferential direction.

Abstract: Provided is a pneumatic tire, which includes a tread portion having an annular shape and extending in a tire circumferential direction, a pair of sidewall portions disposed on both sides of the tread portion, a pair of bead portions disposed on inner sides of the pair of sidewall portions in a tire radial direction, and a band-like sound absorbing member bonded to an inner surface of the tread portion along the tire circumferential direction. The band-like sound absorbing member includes a plurality of cuts in an outer circumferential surface of the band-like sound absorbing member. At least one end of each of the cuts terminates within the band-like sound absorbing member.

Abstract: A pneumatic tire includes a band-like sound absorbing member adhered on an inner surface of a tread portion along the tire circumferential direction. Cuts are formed on the band-like sound absorbing member mutually intersecting such that angles ?1, ?2 with regard to the tire width direction are within a range where 0°??1?90° or 0°??2?90°. The cuts are locally disposed in a region adjacent to an end portion on a vehicle inner side of the band-like sound absorbing member. A width of the placement region of the cuts is from 10% to 80% with regard to a width of the band-like sound absorbing member.

Abstract: Apparatus for checking a tyre having: a support plane; a deformation element to generate a deformed surface portion; a positioning actuator to move the deformation element; and a device with a camera, a first light source, a second light source, a processing unit and a drive and control unit. The processing unit is programmed to activate the positioning actuator to move the deformation element towards the tyre to generate a deformed surface portion. The drive and control unit is programmed to: actuate the first light source to illuminate the deformed surface portion of the tyre, the second light source being inactive during the deformation; control the camera to acquire a first image of the deformed surface portion; actuate the second light source to illuminate an undeformed surface portion of the tyre; and control the camera to acquire a second image of the undeformed surface portion.

Abstract: Provided is a thermoplastic resin composition which enables the production of an inner liner for pneumatic tires, said inner liner having excellent durability and being suppressed in deterioration of air permeation prevention properties due to repeated deformation. A thermoplastic resin composition which is composed of a continuous phase containing an ethylene/vinyl alcohol copolymer and a polyamide and a dispersed phase containing a halogenated isomonoolefin/para-alkyl styrene copolymer, and which is characterized in that an acyl glycerol that is composed of glycerol and a fatty acid having 8 or less carbon atoms is contained in an amount of 0.5-20 parts by mass per 100 parts by mass of the ethylene/vinyl alcohol copolymer.

Abstract: A noise damper, noise attenuation device, and tire and noise damper assembly are disclosed. The noise damper, noise attenuation device, and tire and noise damper assembly mitigate sound produced by a moving tire. The noise damper and noise attenuation device fit within a tire cavity and expand in reaction to a stimulus.

Abstract: This invention relates to a tire with a tread of a rubber composition for promoting a combination of beneficial wet traction and reduced rolling resistance, while limiting any loss of winter traction at low temperatures. The tread rubber composition contains a combination of high and lower glass transition temperature (Tg) elastomers. Its reinforcing filler is primarily precipitated silica. The high Tg elastomer is comprised of synthetic high vinyl polybutadiene rubber and the lower Tg elastomer is comprised of at least one of natural and synthetic cis 1,4-polyisoprene rubber. The tread rubber composition may contain at least one of vegetable oil based rubber processing aid and traction promoting resin. The tread rubber composition is intended to be exclusive of styrene-containing elastomers.

Abstract: Provided is a tire which includes a circular tire frame formed from a resin material that contains a linear low-density polyethylene having a crystallization degree of from 110 J/g to 138 J.

Abstract: A rubber member for laser bonding of the present invention containing a rubber ingredient and silica, wherein the silica has an average particle size of more than 50 nm and 120 nm or less, and the amount of the silica is 10 parts by mass to 50 parts by mass based on 100 parts by mass of the rubber ingredient, the rubber member has a laser light transmittance of 30% or more, provided that the laser light transmittance is a transmittance when the rubber member has a thickness of 2 mm and is irradiated with laser light having a wavelength of 808 nm.

Abstract: The direct-current cable includes a conductive portion; and an insulating layer covering an outer periphery of the conductive portion, the insulating layer containing cross-linked base resin and inorganic filler, the base resin containing polyethylene, a BET specific surface area of the inorganic filler being greater than or equal to 5 m2/g and less than or equal to 150 m2/g, and a mean volume diameter of the inorganic filler being less than or equal to 1.0 ?m, the mass ratio of the inorganic filler with respect to the base resin being greater than or equal to 0.001 and less than or equal to 0.05, and the cross-linked base resin being cross-linked by a cross-linking agent containing organic peroxide.

Abstract: A rubber composition contains at least: a diene rubber, a silica, a silane coupling agent having a mercapto group, a plasticizer, and an oil and/or a resin; from 50 to 200 parts by mass of the silica per 100 parts by mass of the diene rubber and from 2 to 20 mass % of the silane coupling agent having a mercapto group relative to the amount of the silica being blended; and a total amount of the plasticizer and the oil and/or the resin being 60 parts by mass or greater per 100 parts by mass of the diene rubber.

Abstract: A pneumatic tire manufacturing method is provided in which raw cover molding is suitably performed with no, or a minimal amount of, down-stitching in the manufacture of SOT-structure pneumatic tires; also provided is a pneumatic tire. This pneumatic tire manufacturing method involves a first cover molding step for molding a first cover having a sidewall, an inner lining, a ply, beads and a tread-side edge, a tread ring forming step for forming a tread ring having a breaker, a band and a tread center part, a shaping step for pressure-bonding the tread ring and the first cover to mold this to the shape of the raw cover, and a turn-up step for bonding the side wall to the lateral surface of the first cover, wherein the tread-side edge is formed in a position adjacent to the end of the tread center portion in the shaping step, and in the turn-up step, the tread-side edge and the tread center part are bonded together.

Abstract: A pneumatic tire manufacturing method is provided in which raw cover molding is suitably performed with no, or a minimal amount of, down-stitching in the manufacture of SOT-structure pneumatic tires; also provided is a pneumatic tire. This pneumatic tire manufacturing method involves: a step in which a sidewall, an inner liner, and a ply are bonded on a first molding drum, a pair of beads is set, and the tread side part is formed on the side wall, forming a first cover; a step in which a breaker and band are bonded on a second molding drum and the tread center part is formed on the band, shaping the tread ring; a step in which the first cover is inserted inside of the tread ring and the first cover is inflated, bonding the tread ring and the first cover with pressure; and a step in which the sidewall is folded back towards the lateral surface of the inflated first cover and bonded to the lateral surface of the first cover, and the tread side part and the tread center part are bonded together.

Abstract: Provided are a rubber composition for tires which achieves both abrasion resistance and processability while maintaining fuel economy, and a pneumatic tire including the rubber composition. A rubber composition for tires, containing an organosilicon compound represented by the average compositional formula (I) below having a ratio of the number of sulfur atoms to the number of silicon atoms of 1.0 to 1.5, wherein x represents the average number of sulfur atoms; m represents an integer of 6 to 12; and R1 to R6 are the same or different and each represent a C1-C6 alkyl or alkoxy group, at least one of R1 to R3 and at least one of R4 to R6 are the alkoxy groups, and two or more of the alkyl or alkoxy groups for R1 to R6 may be joined to form a ring.

Abstract: As an additive composition capable of improving the processability, the low loss property and the breaking resistance of a silica compounded rubber composition, and a rubber composition excellent in processability, low loss property and breaking resistance, this disclosure provides an additive composition for silica compounded rubber composition comprising a glycerin fatty acid ester, wherein: the glycerin fatty acid ester is an ester of a glycerin and two or more fatty acids, a fatty acid component which is the most among the two or more fatty acids constituting the glycerin fatty acid ester being 10 to 90 mass % of all fatty acids; and a monoester component is contained in an amount of 50 to 100 mass % in the glycerin fatty acid ester, and provides a rubber composition comprising a diene based rubber, a silica, and the additive composition for silica compounded rubber composition.

Abstract: Provided is a modified rubber for a tire (A) obtained by modifying a natural rubber and/or a synthetic rubber with a compound represented by formula (1): wherein X is an acid to form a salt with a guanidine site.

Abstract: Provided is a tire with self-inflation device. The tube is inserted inside the side portion where the extension and contraction movements of the tire are mostly occurring in order to further enhance the efficiency of the air supply to the tire cavity during driving. The air compressed towards the driving direction is injected to the tire cavity, and the air from the outside is charged to the tube due to the negative pressure formed in the tube located in the opposite side of driving. The durability is enhanced by reducing the exposed portion of the regulator.

Abstract: The present invention is directed to a pneumatic tire having a tread comprising a radially outer cap layer and radially inner cap layer underlying the outer cap layer; the outer cap layer comprising a vulcanizable rubber composition comprising, based on 100 parts by weight of elastomer (phr), (A) from about 80 to about 20 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from ?85° C. to ?50° C.; (B) from about 20 to about 80 phr of natural rubber; and (C) from 30 to 70 phr of a process oil; (D) from 70 to 150 phr of silica; wherein the weight ratio of silica to oil in the outer cap is less than 2.2; the inner cap layer comprising a vulcanizable rubber composition comprising: (i) from about 60 to about 40 phr of a solution polymerized styrene-butadiene rubber having a glass transition temperature (Tg) ranging from ?85° C. to ?50° C.

Abstract: Disclosed is a pneumatic tire that includes a tread having a pattern asymmetrical about the tire equatorial plane, and that may reduce cavity resonance and has good steering stability. A pneumatic tire includes a tread portion having a pair of tread halves, the tread halves extending between the tire equatorial plane and respective outer ends in the tire width direction of the tread portion, respectively, and having different negative ratios. The tread portion has short fibers fixed to at least a portion of a tire inner peripheral surface of the tread portion, and one of the tread halves with a higher negative ratio has a higher short-fiber fixation area ratio than that of the other tread half.

Abstract: Disclosed are a pneumatic tire that includes a tread having a pattern asymmetrical about the tire equatorial plane, and that is easy to produce and may surely reduce cavity resonance without lowering repair efficiency, and a method of producing the same. A pneumatic tire includes a tread portion having a pair of tread halves, the tread halves extending between the tire equatorial plane and respective outer ends in the tire width direction of the tread portion, respectively, and having different negative ratios. The tread portion has short fibers fixed to at least a portion of a tire inner peripheral surface of the tread portion, and one of the tread halves with a higher negative ratio has a lower short-fiber fixation area ratio than that of the other tread half.

Abstract: The present invention aims to provide a rubber composition for tires that can improve processability, crack resistance, ozone resistance, discoloration resistance, and tire appearance while maintaining a good balance between them, and also to provide a pneumatic tire formed from the rubber composition. The present invention relates to a rubber composition for tires, containing: a rubber component; an antioxidant; and polyether, the rubber component having a combined content of polybutadiene rubber, natural rubber, and polyisoprene rubber of 80% by mass or more per 100% by mass of the rubber component, the rubber composition containing the antioxidant in an amount of 0.3 to 7.0 parts by mass per 100 parts by mass of the rubber component, the polyether having an average mass content of at least two consecutive polyethylene oxide units of 85% or less of the polyethylene oxide mass content of the polyether.

Abstract: The present invention provides a resonance noise reduction tire having a sound absorbing material mounted therein. The resonance noise reduction tire has a sound absorbing material which is mounted therein so as to be adhered to an inner liner formed inside the tire in a circumferential direction thereof. The sound absorbing material is adhered to the inner liner in the circumferential direction thereof, and is configured so that opposite ends thereof are adhered with being separated at a predetermined interval so as not to be abutted to each other.