Abstract: A single sheet-like belt 8b, from which a single tire component can be formed, is held on an outer circumferential surface of a winding cylinder 12. The sheet-like rubber member 8b, which is held by the winding cylinder 12, is removed from the winding cylinder 12 by rotation of a drum 22 and adhered to an outer circumferential surface of the drum 22, so as to manufacture a tire component 8c. At the time, the sheet-like belt 8b is moved from the winding cylinder 12 to the drum 22 via a removing roller 14 that is arranged above a common tangent Q between the drum 22 and the winding cylinder 12.

Abstract: A pneumatic tire comprises a belt layer disposed in the tread portion. The average cord angle ?n and average cord count Nn of the belt layer are constant or gradually increases or decreases from a center position to shoulder positions. The ratio ?ns/?nc of the average cord angle ?ns at the shoulder positions to the average cord angle ?nc at the center position is 1.30 or less. The ratio Nns/Nnc of the average cord count Nns at the shoulder positions to the average cord count Nnc in the center position is 0.77 or more.

Abstract: Disclosed is a tire building system including a first drum, a second drum and first stations, a first support, a first carrier that carries the first drum with respect to the first support, a second support and a second carrier that carries the second drum with respect to the second support, wherein the first carrier is movable along the first support in a first positioning plane, wherein the second carrier is movable along the second support in the first positioning plane, wherein the first support is arranged for supporting the first carrier from below the first positioning plane and wherein the second support is arranged for suspending the second carrier from above the first positioning plane. The disclosure further relates to a method for positioning the first drum and the second drum with respect to the first stations with the use of the aforementioned system.

Abstract: A pneumatic tire includes a tread, a carcass and a belt. The belt includes inner and outer layers including steel cords and topping rubbers such that the cords in each layer are parallel-aligned and inclined with respect to equatorial plane and inclination directions of the cords in the layers are opposite to each other with respect to the plane, inclination angle ?s of the cords in the inner layer at edge is larger than inclination angle ?c at the plane, the edge of the inner layer is at position of 0.9 times axial direction width, inclination angle ?s of the cords in the outer layer at edge is larger than inclination angle ?c o at the plane, the edge of the outer layer is at position of 0.9 times axial direction width, and difference between the angles ?s and ?c is larger than difference between the angles ?s and ?c.

Abstract: A method for controlling the thickness of a continuous elongated element made of elastomeric material, applied according to coils wound on a forming support, includes: advancing a head end of the continuous elongated element toward the forming support; subjecting, during the advancement, the continuous elongated element to a first stretching with a first stretch coefficient before applying on the forming support; and subjecting, during the advancement, the continuous elongated element to a second stretching with a second stretch coefficient during the application on the forming support. During the first stretching, a span of the continuous elongated element adjacent to the head end is stretched with a supplementary stretch coefficient greater than the first stretch coefficient, in a manner so as to confer, also to the span adjacent to the head end, a stretch and a section similar or substantially equivalent to those of the rest of the continuous elongated element.

Abstract: The invention relates to a method for picking up and placing a tire components, wherein the method includes the steps of picking up a supplied first tire component with a transfer drum, rotating the transfer drum in a first direction for winding a predetermined length of the continuous length of the first tire component, rotating the transfer drum in the opposite second direction, while at the same time moving the transfer drum downstream into a cutting position, wherein a part of the predetermined length of the first tire component is unwound from the transfer drum, cutting the unwound part, thereby obtaining a cut-to-length first tire component, and rotating the transfer drum again in the first direction for winding up the unwound part of the cut-to-length first tire component up to the trailing end.

Abstract: A tire building method comprising: feeding an elastomer strip in a feed direction towards a building drum by means of a first and a second feed conveyor arranged in succession; cyclically determining the transverse position of both sides of the elastomer strip in a centring direction perpendicular to the feed direction; calculating an average head out of center on a head portion of the elastomer strip; and moving the second feed conveyor transversely in the centring direction by an amount equal to the average head out of center, before winding the elastomer strip around the building drum.

Abstract: A tire having a crown reinforcement (5), comprising at least one crown layer (51), and a carcass reinforcement (6), comprising at least one turned-up carcass layer (61), the turned-up carcass layer (61) comprising mutually parallel reinforcers turned up, within each bead, from the inside towards the outside of the tire around a bead wire (7), to form a turn-up (8) comprising a free end (E). The turned-up carcass layer (61) comprises a crown portion (611) and a lateral portion (612), the crown portion (611) extending axially between a first and a second end (E1, E?1) which is symmetric about the equatorial plane (P), the lateral portion (612) extending radially inwards, from a first end (E2) as far as a second end (E3). The reinforcers of the lateral portion (612) and the reinforcers of the turn-up (8) form, with the circumferential direction (X), specified angles.

Abstract: An apparatus for building tires for vehicle wheels includes a building drum having at least one first outer circumferential surface, and at least one pair of auxiliary support members removably in engagement with the building drum, each in axial side by side relationship with a respective end of the building drum and having second outer circumferential surfaces extending in the continuation of the first outer circumferential surface so as to support at least one component of the tyre. Each of the second outer circumferential surfaces has at least one non-stick circumferential portion and at least one sticking circumferential portion.

Abstract: A carcass ply is applied around an outer surface of a building drum, according to an application diameter greater than the fitting diameter of the tire. An annular anchoring structure defining the fitting diameter is coaxially engaged around each of the end flaps. An outer sleeve including at least one belt structure possibly associated with a tread band is disposed at a coaxially centered position around the carcass sleeve applied onto the building drum. Through axial approaching of two halves forming the building drum, the carcass sleeve is shaped into a toroidal configuration to determine application of same against a radially internal surface of the outer sleeve.

Abstract: A plurality of strip-like elements is applied onto a forming drum externally having a substantially cylindrical laying surface. The strip-like elements are disposed in mutually approached relationship to form at least one first annular reinforcing layer on the forming drum itself set to a first work diameter at which each of the applied strip-like elements on the laying surface subtends an arc of a circumference of a width as large as a submultiple integer of the overall circumferential extension of the laying surface itself. Adjustment devices operating on the forming drum subsequently carry out expansion of the latter to a second work diameter larger than the first work diameter, while maintaining its laying surface substantially cylindrical.

Abstract: A pneumatic tire comprising a belt structure and a torus shaped carcass having a first inner radius and an outer radius, wherein the carcass is comprised of three or more layers of ply, wherein each layer of ply is formed from a rubberized strip of one or more cords, the strips being wound in an geodesic pattern having the cord extend across the carcass from a first shoulder to a second shoulder in a path that has at least one point tangent to the first inner radius located in the bead area of the tire.

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: The belt ply feeder and a feeding method thereof comprise: when a belt ply is conveyed to the front end of a conveying forming board, a force is exerted by a perpendicular adjustment device to drive a conveying forming board bracket to swing upward and rotate around a pivot shaft of a rack to positions at which the upper surface of the conveying forming board is tangential to the periphery of a belt ply drum. According to this arrangement, the belt ply is tangential to the belt ply drum all the time and a belt ply is in firm contact with a belt ply drum regardless of the size of the belt ply drum when wrapping the belt ply around the belt ply drum. Accordingly, the quality of tire shaping can be improved.

Abstract: A process for manufacturing an elastomeric tire component includes the steps of a) preparing an elongated element including a cross-linkable elastomeric material by feeding it to an extruding device having a plurality of units, each having a respective thermal inertia, and b) delivering the elongated element onto a building support, and further includes at least one non-productive step of c) submitting at least one of the units of the extruding device to a thermal transition selected from heating or cooling, substantially reducing the risk of scorching during the thermal transition from and to the non-productive step ranking the units according to their thermal inertia and heating the units starting with the top-ranked unit sequentially to the bottom-ranked unit to reach the respective working temperature or cooling the units starting from the maximum working temperature unit sequentially to the minimum working temperature unit to reach the respective non-working temperature.

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 carcass having a radial direction and a circumferential direction. The tire carcass comprises at least one ply of stabilizing fabric and an air-blocking layer attached to the stabilizing fabric. The stabilizing fabric contains a plurality of reinforcing yarns and is disposed within the carcass such that the reinforcing yarns are arranged in the radial direction of the carcass. The reinforcing yarns comprise monoaxially drawn tape elements having a rectangular cross-section, an upper surface, and a lower surface. The tape elements contain at least a first layer having a draw ratio of at least about 5, a modulus of at least about 2 GPa, and a density of at least 0.85 g/cm3. The first layer contains a polymer selected from the group consisting of polyamide, polyester, co-polymers and mixtures thereof.

Abstract: A pneumatic tire carcass having a radial direction and a circumferential direction. The tire carcass comprises at least one ply of stabilizing fabric embedded into an air-blocking layer. The stabilizing fabric contains a plurality of reinforcing yarns and is disposed within the carcass such that the reinforcing yarns are arranged in the radial direction of the carcass. The air-blocking layer contains a polymer selected from the group consisting of polyolefin, ethyl vinyl acetate, polyisobutalyene or polyurethane, polyamide, polyester, co-polymers of PA and PES, dynamically vulcanized alloy resin, co-polymers, and mixtures thereof.

Abstract: On a building drum, anchoring structures to beads, carcass plies, a belt structure and/or other annular composite components are sequentially assembled with a liner, sidewalls, sidewall inserts, under-belt inserts or other annular elastomer components. Each of the sidewall inserts, sidewalls, or under-belt inserts is made as a one piece construction in a service station operating far away from the building drum for storage on a movable storing device. Actuating members operating on the movable storing device carry the annular elastomer components from the service station to the building drum. A transfer member picks up the annular elastomer components from the movable storing device to transfer them to the building drum.

Abstract: A process and apparatus for manufacturing tires for vehicle wheels, includes building, on a toroidal support, a carcass structure including at least one carcass ply associated, at axially opposite end edges thereof, with annular anchoring structures, the building step of the carcass structure includes forming at least one reinforcing structure, operatively associated with the annular anchoring structures through deposition on the toroidal support of at least one reinforcing element along a predetermined curvilinear deposition path. The deposition of the at least one reinforcing element includes the steps of: cutting to size a piece of at least one reinforcing continuous band-like element fed by a feeding device along a predetermined feeding direction, deforming the piece obtained according to the curvature of a deposition part of the deposition path intended to receive the piece, and depositing the deformed piece at the deposition part.

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: The present invention provides a method of manufacturing a pneumatic tire, which can prevent an air pocket from being generated in a vicinity of a spliced portion of a sheet member (B) to be attached to an inner liner, even in the case of using, as the inner liner, a sheet member (A) made of a composition containing a resin component. The method includes a step of laminating a sheet member (A) and a sheet member (B) while being pressed on a making drum. The sheet member (B) is made of a rubber composition, and has two end portions in the circumferential direction overlapped and spliced with each other. In the method, a cut line of each end of the sheet member (B) in the circumferential direction has a vertex in the intermediate point in the width direction of the sheet member (B). Moreover, the cut line is displaced in the opposite direction to the rotational direction of the making drum as extending from the vertex to each of the right and left edges in the width direction.

Abstract: The element (12) for shaping a circumferential portion of a raw tire blank substantially exhibiting symmetry of revolution about a main axis (X) comprises a bearing surface (16) for bearing radially against a circumferential portion of a radially internal surface of the blank. The element (16) is designed in such a way that the radial profile of the bearing surface (16) is modifiable.

Abstract: A cylindrical-shaped body is formed by mounting a carcass to the outer peripheral side of a film formed of a thermoplastic resin or a thermoplastic resin elastomer composition, a primary molded body is formed by fitting bead rings on opposite width direction ends of the cylindrical-shaped body, and the primary molded body is sucked on the inner peripheral surface of a transfer and holding mold. After a rigid inner mold is inserted into the body, suction is stopped and the body is transferred to the outer peripheral surface of the inner mold. Then, another tire member is stacked on the outer peripheral surface to mold a green tire. The tire, from which the inner mold was removed, is mounted inside a curing mold which is heated. The film is inflated and heated to vulcanize the tire, and bonded to the inner peripheral tire surface to form an inner layer.

Abstract: Provided is a process of manufacturing a pneumatic tire, which prevents blisters from being raised on a cylindrical thermoplastic resin film due to an air pocket even in a case where the cylindrical thermoplastic resin film is used as an air permeation preventive layer. Provided is the manufacturing process suitable for a heavy-duty pneumatic tire in particular. The process of manufacturing a pneumatic tire includes: covering the making drum 20 with a cylindrical thermoplastic resin film 6; winding an uncured rubber sheet member 7 as a tie rubber around the thermoplastic resin film 6; and winding a carcass layer 5 around the rubber sheet member 7. The process is characterized in that the rubber sheet member 7 is wound in the circumferential direction of the tire at least twice.

Abstract: A pneumatic tire comprises a tread portion, a pair of sidewall portions, a pair of bead portions, a pair of bead cores disposed one in each of the bead portions, and a carcass ply extending between the bead portions through the tread portion and sidewall portions, wherein the carcass ply is composed of windings of at least one carcass cord looped around the two bead cores in a helical manner and/or figure-of-eight manner.

Abstract: A carcass ply is built on a forming drum by application of a plurality of strip-like elements by the steps of: setting a width of these strip-like elements, setting a width of the overlapped part between two adjacent strip-like elements, setting a fitting diameter of the forming drum by calculating a corresponding extension of a radially external laying surface, and calculating a whole number of strip-like elements to be applied. The whole number of strip-like elements is applied by rotating the forming drum around a geometric rotation axis thereof, and applying pairs of strip-like elements by means of a first laying unit and a second laying unit located close to opposite portions of the forming drum relative to the geometric rotation axis.

Abstract: A method of controlling the management of annular anchoring structures in a process and a plant for building tyres for vehicle wheels, includes: a) feeding pairs of first annular anchoring structures from a first storage region to a bead-forming machine; b) loading a plurality of second annular anchoring structures into a second storage region; c) carrying the second annular anchoring structures from the second storage region to the first storage region; and d) feeding pairs of second annular anchoring structures from the first storage region to the bead-forming machine. The method includes the sequential cyclic repetition of the above actions.

Abstract: Building a carcass structure in the manufacturing of a tire for vehicle wheels includes associating, at each end edge of a carcass ply laying on a forming support, at least one respective annular reinforcing structure obtained by depositing at least one respective reinforcing element. The deposition of the at least one respective reinforcing element includes feeding a continuous reinforced band-like element at a cutting unit, cutting to size at least one first reinforcing element from the continuous reinforced band-like element, moving the first reinforcing element from the cutting unit toward a first end edge of the carcass ply, positioning the first reinforcing element on the first end edge, cutting to size at least one second reinforcing element from the continuous reinforced band-like element, moving the second reinforcing element from the cutting unit toward a second end edge of the carcass ply opposite said first end edge, and positioning the second reinforcing element on the other end edge.

Abstract: The present invention can transfer a belt member on a supply conveyor onto a building drum from an inclined distal end portion while holding on both side edge portions in the width direction thereof and can efficiently adhere the belt member according to the rotation of the building drum. As a means for such building, using a supply conveyor (5) which places the belt member (B1) thereon and a hand device (10) which includes holding members (17a), (17b) having press plates (16a), (16b) extending in the feeding direction of the supply conveyor.

Abstract: According to the present invention, in adhering a belt edge tape (1) which is interposed between belt layers of a tire, press rollers surely adhere by pressing the belt edge tape (1) to a building drum (D) while preventing the press rollers from being caught by end portions of inclined cords which constitute a belt.

Abstract: Provided are a pneumatic tire manufacturing method and a pneumatic tire capable of improving separation failure of a tire component member made of either a thermoplastic resin or a thermoplastic elastomer composition. The method and the pneumatic tire have the following configuration. A green tire is formed by radially expanding a carcass band 13 which is formed on a making drum 21 and which includes an annular tire component member 10 made of any one of a thermoplastic resin and a thermoplastic elastomer composition produced by blending a thermoplastic resin component and an elastomer component. The tire component member 10 is formed of plural layers 10A, 10B, 10C that are stacked on one another. After the inner-side layer 10A (10B) is attached, the making drum 21 is radially expanded by a predetermined amount and then the outer-side layer 10B (10C) is attached onto the inner-side layer 10A (10B).

Abstract: A pneumatic tire molding method and apparatus enable a side member to be attached to a tire component member set on an external circumferential surface of a rigid inner mold with intimate contact while preventing deformation of the side member surface shape. An annular recess in an annular holder covers an area corresponding to a tire side section of a carcass material on an external circumferential surface of a circular-cylindrically shaped rigid inner mold having substantially the same shape as a profile of an internal circumferential surface of a tire to be manufactured. Air is sucked from a space between the recess and carcass to reduce space pressure. A holding part is arranged inside the recess, has a holding surface having the same shape as a side member surface, and attaches the side member to the reduced pressure area. Remaining tire components are attached to complete a green tire.

Abstract: A process for building tyres for vehicle wheels includes feeding to at least one work station an elongated element provided with two service fabrics and wound on a storage coil. The aforementioned feeding includes unwinding the elongated element from the storage coil, removing the two service fabrics from the elongated element, and collecting each of the two service fabrics on a respective collecting member. Each service fabric can thus be subsequently used independently from the other. For example, one service fabric can be reused while the other can be disposed. The removal and collection of the two service fabrics occurs simultaneously with the unwinding of the elongated element, so as not to increase the overall building time of the tyre being processed.

Abstract: Disclosed is a method of manufacturing a radial tire for a construction vehicle, wherein when a cylindrical band is formed by using one layer of carcass layer formed of steel cords in a band making step, a shape retaining layer formed of at least one layer of organic fiber cords is wrapped on the outer peripheral surface of the carcass layer so that the organic fiber cords cross the steel cords of the carcass layer. The radial tire having excellent uniformity without any uneven widening between the steel cords can be provided without using a shape retaining auxiliary apparatus.

Abstract: Provided is a method of manufacturing an unvulcanized tire, with which formation of air pockets is reduced in adhering a cylindrical film member and an adhesive sheet member to each other by using a forming drum having an expansion/contraction mechanism. In the method, a forming device having a forming drum (1) which has an expandable/contractible outer diameter and a forming roller (2) disposed in parallel to the forming drum (1) is used; a cylindrical film member (3) is wound around the forming drum (1) and the forming roller (2); thereafter, the diameter of the forming drum (1) is expanded whereby the cylindrical film member (3) is tensioned so as to be in close contact with the forming drum (1); and subsequently, an adhesive sheet member (4) is supplied and adhered to an outer peripheral surface of the cylindrical film member (3) on the forming roller (2), while the cylindrical film member (3) is being moved in a circumferential direction by rotating the forming drum (1).

Abstract: Method and apparatus for forming an annular composite structure is provided. In one embodiment an apparatus for forming annular composite structures is provided. The apparatus includes an annular shaped tool and a forming head. The annular shaped tool includes a forming surface of a select cross-sectional geometry. The forming head is configured to form continuous ply layers one ply at a time circumferentially about the forming surface of the tool.

Abstract: A pneumatic tire carcass having at least one ply of stabilizing fabric. The stabilizing fabric has a machine direction and a cross machine direction. A plurality of high tenacity reinforcing yarn elements are disposed in the cross-machine direction. A plurality of machine direction yarn elements of relatively lower tenacity than the reinforcing yarn elements are disposed in the machine direction. The stabilizing fabric has an adhesion layer on both sides of the stabilizing fabric and a patterned coating of a tackifing material overlaying a portion of at least one side of the stabilizing fabric. A segment of the stabilizing fabric is disposed within the carcass with the machine direction yarn elements being in substantial alignment with the direction of tire rotation and with the cross-machine direction oriented radially relative to the direction of tire rotation.

Abstract: A chuck and a chuck system, and a method for processing a toroidal structure such as a tire carcass. The carcass includes an internal circumference and tapered ends. The chuck system comprises a plurality of chucks wherein each chuck includes a circumferential or substantially circumferential external surface and a plurality of friction reducing members positioned on the external surface. The friction reducing members are positioned to engage the internal circumference of the toroidal structure such as a tire. The method of processing a tire carcass includes positioning the tire carcass on fixed diameter chucks having friction reducing members on the external surface.

Abstract: A process and apparatus for manufacturing tires for vehicle wheels, includes building, on a toroidal support, a carcass structure including at least one carcass ply associated, at axially opposite end edges thereof, with annular anchoring structures, the building step of the carcass structure includes forming at least one reinforcing structure, operatively associated with the annular anchoring structures through deposition on the toroidal support of at least one reinforcing element along a predetermined curvilinear deposition path. The deposition of the at least one reinforcing element includes the steps of: cutting to size a piece of at least one reinforcing continuous band-like element fed by a feeding device along a predetermined feeding direction, deforming the piece obtained according to the curvature of a deposition part of the deposition path intended to receive the piece, and depositing the deformed piece at the deposition part.

Abstract: There is provided a belt member producing method including forming a strip piece 17 of a predetermined width W by cutting a strip material 12 including a plurality of reinforcement cords 11 to a regular size, conveying the strip piece 17 to a transfer conveyor 22 in such a manner that cut sides 19 of the strip piece 17 are in parallel with a traveling direction B of the transfer conveyor 22 and overlapping continuously an integral number Nint of strip pieces 17 on each other on the transfer conveyor 22 in such a manner that the strip pieces 17 are overlapped on each other by an overlapping amount P along non-cut sides 18 thereof, so as to produce a belt member 30 having a desired length equal to a predetermined length L of a belt layer of a pneumatic radial tire, the belt member producing method being characterized by including selecting a desired cutting angle ?pre relative to a traveling direction A of the strip material 17 when the strip material 12 is cut to the regular size, calculating a number Ncal of

Abstract: The invention can efficiently provide a carcass member constituting a carcass layer of a radial tire, particularly, a carcass member a direction of a cord of which constitutes an angle of substantially 90° relative to a tire circumferential direction, and can easily adjust a length in accordance with a size, one piece of a cord (C) is continuously passed through a rubber coating die (14) to coat rubber on the cord, the rubber coated cord (C1) is shaped such that a sectional outer shape thereof constitutes an elliptical shape, the rubber coated cord (C1) is wound around an aligning drum (30) while adjusting a direction of the elliptical shape by way of an aligning guide (20) to bond without producing a gap to form a cylinder-like member (A1), thereafter, the cylinder-like member (A1) is cut in a direction in parallel with the drum axis center to constitute a sheet-like shape.

Abstract: A pneumatic tire carcass having at least one ply of stabilizing fabric. The stabilizing fabric has a machine direction and a cross machine direction. A plurality of high tenacity reinforcing yarn elements are disposed in the cross-machine direction. A plurality of machine direction yarn elements of relatively lower tenacity than the reinforcing yarn elements are disposed in the machine direction. A segment of the stabilizing fabric is disposed within the carcass with the machine direction yarn elements being in substantial alignment with the direction of tire rotation and with the cross-machine direction oriented radially relative to the direction of tire rotation.

Abstract: Provided is a manufacturing method for a pneumatic tire including the steps of: shaping a cylindrical film formed of a thermoplastic resin or a thermoplastic elastomer composite in which a thermoplastic resin is blended with an elastomer, folding the film into a sheet shape, laminating rubber layers on both surfaces of the folded film, opening the laminate of the film and the rubber layers into a cylindrical shape, fitting the laminate thus opened on a tire making drum, forming the tire pneumatic tire including the film as an air permeation preventing layer, and curing the uncured tire.

Abstract: A vehicle wheel tire includes a carcass structure, at least one annular reinforcing structure, a tread band, and a pair of sidewalls. The carcass structure includes at least one carcass ply, each including a plurality of elongated elements disposed around a cross-section profile of the tire. Each elongated element includes two side portions at mutually-spaced-apart positions and a crown portion that extends between the side portions. The at least one annular reinforcing structure includes at least one bead core. A fraction of the elongated elements is turned up around the at least one bead core. A method of manufacturing the tire includes preparing the elongated elements, disposing each elongated element on a toroidal support, applying at least one bead core at a region close to side portions of the elongated elements, and turning up ends of a fraction of the elongated elements around the at least one bead core.

Abstract: A belt package for a pneumatic vehicle tire has at least two belt plies. The belt plies are built up in at least two sub-packages, which are automatically placed on a belt drum and automatically spliced independently of one another. The sub-packages are then joined together to form the complete belt package.

Abstract: The present invention provides a tire building, and a building system, process setup method and manufacturing method for a tire built by this tire building drum, which can suppress investment cost of the drum core of the tire building drum used in a tire building system for building tires in different sizes, and to shrink an inventory of reserve drum cores. Plural distance pieces having the same thickness and end pieces forming the both end portions in the width direction are aligned in the width direction of the drum core to configure plural rigid segment which constitute the tire building drum. The distance pieces which are detachably configured are so arranged that their thickness direction face in the width direction of the drum core.

Abstract: The constituent elements of a carcass structure of a tire are formed by laying elementary components on a building support including an inflatable bladder set in an inflated condition in which it substantially reproduces the inner configuration of the carcass structure to be obtained. A belt structure carrying a tread band, both produced separately, is coaxially disposed around the carcass structure formed on the building support and applied thereto following a radial expansion of the inflatable bladder. In a vulcanization mold, the building support is submitted to an over-inflation step to press the tire against the inner walls of the mold. The circumferential edges of the inflatable bladder are in engagement with respective anchoring flanges with possibility of movement in a radial direction, so as to be submitted to an elastic expansion during the over-inflation step.

Abstract: A tire structural member fabricating method fabricates a tire structural member by successively and contiguously attaching strips 1 to the convex outer surface having an outwardly convex cross section of a forming drum 11 by a strip feed device 21 such that the strips 1 extend obliquely to the center axis C of the forming drum 11. The strip feed device 21 moves parallel to the center axis C of the forming drum 11 at a fixed speed V and feeds strips 1 successively onto the outer surface of the forming drum 11. A controller 40 controls the rotation of the forming drum 11 such that the angular velocity ? of the forming drum 11 varies gradually.

Abstract: Provided is a method of manufacturing a pneumatic tire, which is capable of reducing tire failure without leading to reduction in productivity, the method including: folding a cylindrical film made of thermoplastic resin or thermoplastic elastomer composition into a sheet shape; stacking rubber layers on both surfaces of the folded film in a manner that the rubber layers protrude from both edge portions of the film; forming a laminate by cutting protruding parts of the rubber layers into rubber protruding portions each having an amount of protrusion (h) in a range from 3 mm to 20 mm; expanding the laminate into a cylindrical shape and fitting the laminate onto a tire making drum; pressing down each rubber protruding portion toward the surface of the drum by use of a pressure roller; pasting other components of a tire onto the laminate to form an uncured tire; and curing the uncured tire.