An expandable bladder for shaping a pneumatic tire to be mounted inside a tire curing mold, the expandable bladder having a toroidal configuration and having a pair of opposing annular beads, wherein the bladder has an expansion section that is formed from a plurality of waves.

A tire vulcanizing system (100) is provided that optimizes the service life of guidance means and preserves the thermal stability of the vulcanization.

A pneumatic tire includes a sound absorbing member fixed to an inner surface of a tread portion via an adhesive layer in the tire circumferential direction. A thickness of the sound absorbing member 6 is 20 mm or greater, a hardness of the sound absorbing member is from 80 N/314 cm.sup.2 to 150 N/314 cm.sup.2, a tensile strength of the sound absorbing member 6 is 90 kPa or greater, an elongation at break of the sound absorbing member is 130% or greater, a JIS hardness of the tread rubber of the tread portion is from 50 to 68, and a plurality of sipes are provided in a land portion formed in the tread portion.

Provided is a pneumatic tire including an indicator made of a protrusion portion or a recess portion extending in a tire circumferential direction is formed on a tire inner surface. A sound absorbing member or a sealant layer is applied to the tire inner surface along the indicator.

A compounded elastomer comprising an elastomeric resin, a first carbon black, and a second carbon black different from the first carbon black. The second carbon black is a partially crystallized carbon black having an OAN structure of greater than 120 cm.sup.3/100 g and less than 200 cm.sup.3/100 g, a surface energy of less than 10 mJ/m.sup.2 and a Raman microcrystalline planar size (L.sub.a) of greater than or equal to 25 and less than or equal to 50 .

A pneumatic tire is vulcanized using a bladder provided with a coating layer formed of a release agent, and includes a sealant layer disposed on an inner surface of a tread portion in a tire circumferential direction. The amount of silicon of the release agents detected in at least a placement region of the sealant layer by fluorescence X-ray analysis is from 0.1 wt. % to 10.0 wt. %.

A pneumatic tire is vulcanized using a bladder provided with a coating layer formed of a release agent, and includes a sealant layer disposed on an inner surface of a tread portion in a tire circumferential direction, the release agent having a thickness of from 0.1 m to 100 m in at least a placement region of the sealant layer, detected using an electron microscope.

A Silicon based expandable curing bladder comprising, an expandable tire curing bladder (20) composition comprising a silicone base at least 50 to 99 percent by weight of the composition. The curing bladder (20) comprising a silicon base and/or additives which are selected from the groups consisting of silicon base rubber, silicon base compound, silicone color, platinum catalyst, inhibitor, activator, heat stabilizers, crosslinkers and filler in order to increase release properties of an expandable curing bladder with long durability. A production method which is preferably compression and/or transfer molding or injection molding is also described accordingly.

An expandable bladder for shaping a pneumatic tire to be mounted inside a tire curing mold, the expandable bladder having a toroidal configuration and having a pair of opposing annular beads, wherein the bladder has an expansion section that is formed from a plurality of waves.

A method of building a tire having no ply turnup is described. The method includes the steps of applying an inner liner and chafer onto a tire building drum; radially expanding the center portion of the drum and applying a first column bead, applying a layer of ply followed by a second column bead, turning up the chafer and then inflating the carcass under low pressure below 150 mbars, applying the tread, applying the sidewall. A method of molding a green tire having a first and second bead area is described herein, wherein the method includes the steps of: inserting a tire clamping device inside a tire bladder and then inserting the tire clamping device and the bladder into the green tire, aligning the outer surfaces of the tire clamping device are in engagement with a respective bead area of the tire so that each tire bead area is clamped between a respective upper and lower mold ring and the tire clamping device during cure.