Abstract: A manufacturing device for an unvulcanized band-shaped rubber member is provided. A position sensor detects, across a width direction of the band-shaped rubber member, leading and trailing ends of the band-shaped rubber member placed in a flat state on a conveyor, holding portions arranged side by side in the width direction hold at least one of the leading or trailing ends, with movement portions allowing the holding portions to move individually in a front-rear direction, the leading and the trailing ends are held by the leading and trailing end holding mechanisms, respectively, and a control unit controls a displacement of the movement portions in the front-rear direction based on data from the position sensor and a target length to adjust elongation in the front-rear direction at or near a held portion held by each of the holding portions to achieve the target length of the band-shaped rubber member.

Abstract: In a method for manufacturing a pneumatic tire, a laminated body is formed of a film containing a thermoplastic resin or elastomer, and rubber sheets laminated on surfaces of the film. A winding starting end of the inner rubber sheet is on a side opposite to a winding direction of the laminated body with respect to an end of the film; an end of the outer rubber sheet at the winding starting end is at the same position as the end of the film or is positioned on a side of the winding direction of the laminated body with respect to the end of the film. An outer surface of the outer rubber sheet at the winding starting end and an inner surface of the inner rubber sheet of a winding finishing end are brought into contact by overlapping and bonding the winding starting end and the winding finishing end.

Abstract: A method for manufacturing a pneumatic tire includes: a step of winding carcass plies around a molding drum to mold a carcass, wherein the carcass has a joint portion in which ends of each of the carcass plies in a tire circumferential direction are overlapped with each other, the method further includes a step of pasting a rubber tape that covers at least a part of the joint portion after winding the carcass ply, and the rubber tape has: a central portion pasted to an outside of the joint portion and extending with a constant thickness along the tire circumferential direction; and tapered portions individually extending from both ends of the central portion in the tire circumferential direction along the tire circumferential direction while reducing a thickness of each of the tapered portions, and having tip ends with an angle of 45 degrees or less.

Abstract: A method for controlling the laying down of components of tyres on forming drums, includes: sending a first electromagnetic radiation on a first laying down structure including a forming drum and a first component of a tyre laid down on the forming drum; detecting at least a first corresponding reflected radiation, determining as a function of the first reflected radiation a first parameter representative of a first main length of the first component; comparing the first parameter with one or more pre-stored reference values; generating a first correction signal as a function of the comparison; and sending the first correction signal to at least one preparation station adapted to prepare the first component to regulate the preparation of further components. An apparatus for controlling the laying down of components of tyres on forming drums is also described.

Abstract: A reinforcement structure for a polymer ply includes a plurality of flat woven cords. Each flat woven cord has a width between 0.5 mm and 1.6 mm and a thickness between 0.2 mm and 0.8 mm thereby producing the reinforcement structure with an overall width between 25.0 mm and 26.0 mm. Each flat woven cord includes materials with melting points between 130° C. and 230° C.

Abstract: A pneumatic tire 1 comprises a carcass 6 comprising at least one carcass ply 6A extending between bead portions 4 via sidewall portions 3 and a tread portion 2. The carcass ply 6A comprises strip-shaped ply pieces 11 longer in a tire radial direction than in a tire circumferential direction arranged circumferentially. Each of the ply pieces 11 comprises a plurality of carcass cords 12 arranged in parallel in the tire radial direction and at least partly overlapping each other with the ply pieces 11 circumferentially adjacent. At least one of the carcass cords 12 arranged in at least one of side edge portions 11e in the tire circumferential direction of each of the ply pieces 11 having a diameter (Ce) smaller than a diameter (Cc) of at least one of the carcass cords 12 arranged in a center portion 11c of each of the ply pieces 11.

Abstract: A pneumatic tire is formed by winding a sheet member (A) and a sheet member (B) onto a molding drum and molding a cylindrical body. A laminate body (M) in which the sheet member (B) is layered in advance on the outer periphery of the sheet member (A) is wound onto a molding drum (10), the tack value of a material (a) constituting the sheet member (A) being smaller than the tack value of a material (b) constituting the sheet member (B), the length of the sheet member (A) being configured so that a starting end (As) of winding on the molding drum (10) and an ending end (Ae) of winding do not overlap, and the length of the sheet member (B) being configured so that the ending end (Be) of winding extends longer in the circumferential direction than the ending end (Ae) of winding of the sheet member (A).

Abstract: A distance measure between a beginning and an end of a material strip wound onto a body in a tangential direction can be determined by creating a height profile of a surface of the material strip, which covers the beginning and the end of the wound material strip in the tangential direction. If a position value of the beginning of the material strip is determined in the created height profile, the distance measure can be determined using this position value and the height profile covering the end of the material strip.

Abstract: A weather strip is formed by joining a first sealing body, a second sealing body, and a resin joint portion, which is arranged between the sealing bodies, to each other. The resin joint portion includes a rib portion, which has a shape that bulges outward from between the opposed faces of the first sealing body and the second sealing body. The rib portion has a shape to be joined to the outer surface of the end of the first sealing body and the outer surface of the end of the second sealing body and to extend along the joined parts of the first sealing body and the second sealing body.

Abstract: A tire constituting member in an unvulcanized tire having a joint portion is prevented from being triply overlapped and is wound around a body to be formed. When detecting the joint portion, the tire constituting member is cut into a length shorter than a predetermined length while excluding the joint portion. A front end and rear end portions of the wound tire constituting member are held by front and rear end holding members. The tire constituting member is extended into a predetermined length and both holding members are moved to the side of the body. The front end portion is attached to the body, a support member is rotated, the tire constituting member is wound around the body, the rear end holding member is moved to the side of the body as the tire constituting member is wound and the rear end portion is joined to the front end portion.

Abstract: In a method for manufacturing a pneumatic tire, molding of a green tire has an assembly step of bonding an inner liner and an unvulcanized rubber sheet with end portions thereof in a width direction being displaced from each other by 50 mm to 500 mm in the width direction to manufacture a laminate, cutting the laminate to have a constant length corresponding to a width of a drum to manufacture a cut sheet, and 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 such that positions of the joined end portions are displaced by a constant distance.

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: 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 and a method of making a tire are provided. The tire includes a tire tread, a tire layer, and a barrier layer. The tire layer is circumferentially disposed inwardly of the tire tread and includes a first end and a second end situated adjacent each other to define a butt joint. The barrier layer includes a first end and a second end, a portion of the first end of the barrier layer overlaps the second end by about 1.5 cm or more to define a lap joint, and where the first end of the barrier layer is received between and extends beyond the butt joint such that the first end of the tire layer is sandwiched between the lap joint.

Abstract: The invention relates to a machine for manufacturing an object closed onto itself, which machine comprises first means for guiding and carrying a tire material to be arranged round the first means, characterized in that the first means can change form in controlled manner between a first form and a second form. The invention also relates to a machine for manufacturing an object closed onto itself, which machine comprises first means for guiding and supporting a tire material to be arranged round the first means, characterized in that the machine also comprises sixth means for folding the tire material arranged round the first means, for which purpose the sixth means comprise a number of folding members movable relative to each other, which folding members can engage on the tire material for folding and can therein move inside recesses provided for this purpose in the first means.

Abstract: An apparatus for joining a carcass ply, which butt-joins a wind start end and a wind finish end of a carcass ply wound around a cylindrical drum, is disclosed. The apparatus comprises: a joining section for joining the ends of the carcass ply; and aligning sections for aligning the ends of the carcass ply during joining by the joining section, the joining section and the aligning sections being disposed below the cylindrical drum supported in a horizontal state.

Abstract: Provided in some embodiments is a method that includes coupling portions of one or more members using at least one impact driven fastener. At least one impact driven fastener includes at least one penetrating portion formed of plastic, and at least one head portion having a heat deformation temperature less than about 250° F. Plastic of the penetrating portion provides the penetrating portion with a flexural strength greater than about 9500 psi. The method also includes applying heat to at least partially deform the head portion of at least one fastener.

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: Provided is a method of producing a pneumatic tire where occurrence of blisters caused by trapped air is prevented even if a thermoplastic resin film is used as an air permeation prevention layer. The method includes: wrapping a thermoplastic resin film (6) around a making drum (20); winding an unvulcanized tie-rubber sheet (7) on the thermoplastic resin film (6) in a manner that a winding start portion (7a) and a winding end portion (7b) of the tie-rubber sheet (7) are overlapped with each other; and thereafter winding a carcass layer (5) on the tie-rubber sheet (7). In the method, an unvulcanized auxiliary rubber sheet (9) is bonded onto the winding start portion (7a) of the tie-rubber sheet (7) so as to project in a circumferential direction, and then the tie-rubber sheet (7) is wound in a manner that the winding end portion (7b) of the tie-rubber sheet (7) is stacked on the auxiliary rubber sheet (9).

Abstract: A pneumatic tire has two belt layers, each having a plurality of strip pieces formed by pulling together and rubberizing a plurality of steel cords. Strip piece width, strip piece thickness, belt layer cord angle with respect to a tire circumferential direction, numbers of the strip pieces of inner and outer belt layers, and circumferential lengths of the inner and outer belt layers are respectively denoted by A, G, ?, N1, N2, L1 and L2. N2 is equal to N1, and N1 is an integer satisfying L1=N1×A/sin ?. The inner belt layer is formed by joining the N1 strip pieces so each side of each strip piece is butted with one side of another strip piece. The outer belt layer is formed by aligning the N2 strip pieces on the inner belt layer in the tire circumferential direction with spaces of width 2?G/N2 disposed between adjacent strip pieces.

Abstract: A method and an apparatus for butt-jointing edges of an elastic material sheet is disclosed. The elastic material sheet is supported such that the two edges to be butt-jointed are oppositely opposed. By moving a pair of counterrotating conical surfaces along the edges, the surfaces of the edges portions are drawn toward the center between the two edges so that the edges are butt-jointed. Between the conical surfaces, a small space is provided so as to form a small rib-like protrusion along the butt-joint. Then, the small rib-like protrusion of the elastic material is pressed down to flatten. Therefore, at the butt-joint interface, the elastic material irregularly interfuses to increase the strength of the butt-joint.

Abstract: A pneumatic tire includes: a carcass; an inner liner disposed at an inner side of the carcass in a tire radial direction; and a tie rubber layer disposed between the carcass and the inner liner, wherein the inner liner and the tie rubber layer are layered with the ends thereof being shifted from each other in a tire circumferential direction, and wherein the inner liner and the tie rubber layer are spliced with the ends of the inner liner in the tire circumferential direction overlapping each other and with the ends of the tie rubber in the tire circumferential direction overlapping each other.

Abstract: The invention concerns a tire comprising beads each containing at least one circumferential reinforcement structure; a crown comprising a reinforcement structure surmounted radially towards the outside by a tread; on either side of the crown, a sidewall providing the connection to each bead; at least one carcass reinforcement extending from one bead to the other, passing through the crown, and anchored to at least one circumferential reinforcement structure within each bead, the carcass reinforcement being formed of at least one rubberized ply comprising reinforcing threads extending substantially radially, that is to say forming an angle of between 80° and 100° with the circumferential direction; at least one junction zone formed by superposition of the ply on itself, this zone being oriented substantially radially; at least one cover strip covering part of a junction zone, each cover strip being formed of a rubber composition reinforced by a plurality of reinforcing threads, the reinforcing threads of each

Abstract: A cord-reinforced tire structural member is formed by successively arranging strips of a predetermined width w of about ? in. and bonding together edge parts of adjacent strips 3. The number of cords included in each of the strips 3 is determined for the type of the cords. A tire structural member 4 is formed by successively arranging a number of the strips 3, equal to a tire size in inch in a direction parallel to the width of the strips and bonding together edge parts of adjacent strips 3. Thus, the number of cords to be included in the tire structural member 4 for one tire can be easily fixed.

Abstract: A tire component is fabricated by the steps of forming a narrow belt by arranging a plurality of cords and embedding the cords in a rubber layer, cutting the belt into strips of a predetermined length, and successively arranging and joining a necessary number of the strips such that edge parts of adjacent strips overlap each other with the outermost cord in the edge part of one of the adjacent strips overlying the outermost cord in the edge part of the other strip. The strips can be surely joined without requiring advanced techniques, without wasting materials and without increasing weight. Thus a desired annular tire component can be accurately formed in a desired circumference. The cords are arranged in each strip in a width equal to a length shorter than a length equal to an integral division of the predetermined circumference of a tire by a length corresponding to an increase in the diameter of the tire component.

Abstract: A radial pneumatic tire includes a body ply and two belts. Each of the body ply and the belts has ribbon pieces that are arranged along the circumferential direction of the tire. Each ribbon piece is joined with the adjacent ribbon pieces at the lateral sides. Each ribbon piece has parallel cords coated with rubber. The cords are arranged at a predetermined first cord interval. The cords at the joined ends of the adjacent ribbon pieces, or the cords with the joint in between, are arranged at a predetermined second cord interval. As a result, a tire having a high consistency and an improved weight balance is obtained.

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: A method of manufacturing a tire reinforcing material for achieving uniformity in stiffness at a joint of a ply of a cord fabric and improving dynamic uniformity of a tire shaped and vulcanized, the cord fabric constructed of warp cords arranged in parallel with each other and wefts arranged substantially orthogonally to the warp cords, includes: a topping step for coating with rubber the cord fabric having the wefts folded back at respective warp cords at opposing ends of the cord fabric to produce a ply; a cutting step for cutting the ply into ply pieces each having a predetermined length; a joint forming step for removing one to five cords at each of opposing ends of the ply to form a joint; and a joining step for joining together the joint of one of the ply pieces and the joint of another ply piece.

Abstract: There is provided a tire structural member forming method capable of forming a structural member of a tire for a vehicle at a low cost, using a simple mechanism satisfactory in space efficiency and capable of setting a band-shaped member of a predetermined length on a forming drum in a high setting accuracy.

Abstract: Method of laying a tire belt ply on a form, using one or two transporters each having gripping assemblies, for gripping and moving the gripping sectors situated at the two longitudinal ends of a belt ply. The front and rear edges are aligned, after having determined the angular geometry of the ply edges by means of a suitable device, by independently moving at least one gripping sector of each of the front and rear areas. This method makes it possible to align edges having high curvatures and to lay a belt ply on a curved form.

Abstract: A strip member is wound by a tire building machine having a building drum for taking up a strip member of predetermined length without discrete ends and a transfer conveyor for feeding the strip member to the building drum. The winding-start end of the strip member transferred from the transfer conveyor to the building drum and the winding-finish end of the strip member are detected by means of end sensors, measuring the angle through which the building drum has rotated from the output of a winding start signal to the output of a winding finish signal in response to output signals from the sensors by means of an angle detector. A lapping margin between the winding start end and the winding finish end of the strip member is calculated based on the rotational angle and diameter of the building drum by means of an operational means.

Abstract: A rubber-coated fabric 10 for a tire, obtained by rubber-coating a rattan blind woven stuff 14 in which wefts 11 and warps 12 made of tire cords 13 are woven into a rattan blind form. The wefts 11 have a break elongation of 4 to 30% and a break strength of 3 to 15 N.

Abstract: The invention concerns a process for the manufacture of a tire comprising the following steps: a) laying a carcass reinforcement on a generally flat receiving surface; b) turning up at least one lateral end of the carcass reinforcement over itself to obtain a semi-finished product having a turnup; c) laying a complete turn of the semi-finished product so obtained in the circumferential direction around a generally cylindrical receiving surface; d) joining together the opposing ends of the semi-finished product to obtain a joint; and e) positioning a bead wire over the turnup so formed.

Abstract: A tire (10) has a composite ply (40). The composite ply (40) has a primary ply (40A) reinforced with parallel inextensible cords (41) and a pair of ply extensions (40B) having synthetic cords (43). The method of manufacturing the tire (10) is described. The tire (10) can be made as a runflat type tire.

Abstract: The invention relates to a rubber composition which contains an aminoalcohol as a tack retention additive. The invention also relates to a tire having a component of such rubber composition. The invention is further directed to a method of preparing a tire having tire tread ends or other rubber components joined together without an adhesive.

Abstract: A strip member is wound by a tire building machine having a building drum for taking up a strip member of predetermined length without discrete ends and a transfer conveyor for feeding the strip member to the building drum. The winding-start end of the strip member transferred from the transfer conveyor to the building drum and the winding-finish end of the strip member are detected by means of end sensors, measuring the angle through which the building drum has rotated from the output of a winding start signal to the output of a winding finish signal in response to output signals from the sensors by means of an angle detector. A lapping margin between the winding start end and the winding finish end of the strip member is calculated based on the rotational angle and diameter of the building drum by means of an operational means.

Abstract: The present invention is directed toward an improved method of manufacturing a pneumatic tire using a bladderless curing system. The tire is built on an associated tire building drum (26) by the layering of multiple tire components on the drum (26); one of the components is an innerliner strip (28). In accordance with the disclosed invention, the innerliner strip (28) is formed with precured regions (32). The precured regions (32) are formed by curing the innerliner strip (28) at one or more regions intermediate of the ends (30) of the strip (28). The strip (28) is applied to the tire building drum (26) and the ends (30) are spliced to one another.

Abstract: A tire carcass is produced by a method in which a narrow carcass ply member including a plurality of cords coated by, and embedded in a rubber material is extruded from an extruder, and an inner liner member is simultaneously extruded from the extruder integrally with the carcass ply member. A narrow band-shaped laminated body is thereby efficiently formed, in which the inner liner member is integral with the carcass ply member.

Abstract: A strip member is wound by a tire building machine having a building drum for taking up a strip member of predetermined length without discrete ends and a transfer conveyor for feeding the strip member to the building drum. The winding-start end of the strip member transferred from the transfer conveyor to the building drum and the winding-finish end of the strip member are detected by means of end sensors, measuring the angle through which the building drum has rotated from the output of a winding start signal to the output of a winding finish signal in response to output signals from the sensors by means of an angle detector. A lapping margin between the winding start end and the winding finish end of the strip member is calculated based on the rotational angle and diameter of the building drum by means of an operational means.

Abstract: The invention concerns a process for the manufacture of a tire comprising the following steps: a) laying a carcass reinforcement on a generally flat receiving surface; b) turning up at least one lateral end of the carcass reinforcement over itself to obtain a semi-finished product having a turnup; c) laying a complete turn of the semi-finished product so obtained in the circumferential direction around a generally cylindrical receiving surface; d) joining together the opposing ends of the semi-finished product to obtain a joint; and e) positioning a bead wire over the turnup so formed.

Abstract: Process and device for transporting a belt construction strip having parallel reinforcing members embedded in a belt construction material for forming a belt for a pneumatic vehicle tire.

Abstract: Method and apparatus for highly efficiently forming a tire reinforcing layer, such as a carcass ply or belt ply, either directly or indirectly on a rubber member which is supported on a rigid core having a toroidal shape. According to the invention, a continuous strip of reinforcing material comprised of a plurality of single cords or twisted cords is cut into reinforcing elements having a predetermined length. The reinforcing elements are successively fed to the rubber member from one side of the core, synchronously with an indexing movement of the core about its center axis. The reinforcing elements are then urged against the outer surface of the rubber member on the core along their longitudinal direction and thereby progressively pressure-joined to the rubber member.

Abstract: Vehicular tire and process of making the same. The tire includes a carcass made of rubber, sidewalls, and tread. The carcass, in a sidewall region, includes at least one carcass ply having parallel textile reinforcements embedded in the rubber and two carcass ply ends, and the two carcass ply ends are arranged to overlap in a circumferential direction, thereby forming an overlapping point. A sidewall rubber strip is positioned to cover the carcass in the sidewall region, and a moiré pattern is formed on the sidewall rubber strip. The process includes circumferentially overlapping the two carcass ply ends of the carcass, thereby forming an overlapping region, covering the overlapping region on the outside with a sidewall rubber strip, and forming a moiré pattern on the sidewall rubber strip.

Abstract: Forming a tubular tire ply from a flat sheet of wire reinforced material, cutting the ply to length and applying the ply to a drum.

Abstract: The invention relates to a process for manufacturing an unfinished rubber piece for a vehicle tire that includes providing a plurality of tire components composed of unvulcanized rubber mixtures, and treating a surface of at least one of the plurality of tire components with a plasma and/or a flame to increase the adhesiveness of the surface. The unvulcanized rubber mixtures may include partially embedded reinforcing members.

Abstract: A method for manufacturing a pneumatic vehicle tire includes the step of folding the carcass ply in the overlap zone of the leading and trailing ends into at least one fold to form an overlength of the reinforcement elements in the overlap zone for preventing the constriction in the overlap zone within the vulcanized, inflated tire. Subsequently, in both methods, the green tire is completed on the building drum and the green tire is then vulcanized to produce the finished tire.

Abstract: A radial tire (10) having at least one belt enforcement (13) and one carc reinforcement (14) with at least one ply (20) of rubberized fabric (24) having radial threads (25) essentially parallel to the radial direction (xx'), the radial ply having at least one overlapping splice (21) formed by the overlapping of two edges (22, 23) of the said fabric (24) and being limited circumferentially by two borders (28,29), characterized in that the said splice (21), in each of the said edges (22, 23), has at least one cut (26, 27) located underneath the belt reinforcement (13) and splitting several radial threads (25). The tire according to the invention, compared with classical radial tires of the prior art, presents an external sidewall appearance that is clearly improved.

Abstract: A radial tire having at least one side wall and a carcass reinforcement consisting of at least one ply (20) reinforced by parallel threads (24) in substantially radial direction, termed radial threads, and having at least one lap weld (21) formed by superposition of two ends (22, 23) or adjacent elements of said ply, characterized in that, in the side wall, the general orientation (D2) of the lap weld is oblique with respect to the direction (D1) of the radial threads (24). The radial tire for a passenger vehicle or van, has a carcass reinforcement which includes a single radial ply, the radial threads (24) having in particular a polyester, particularly polyethylene terephthalate base. The tire according to the invention, compared to prior art radial tires, presents an improved outward appearance of the side walls.

Abstract: A method for manufacturing a pneumatic vehicle tire includes the step of providing a cylindrical building drum with a bar or depression having a longitudinal extension in the direction parallel to the orientation of reinforcement elements of a carcass ply to be applied to the building drum. A lining is positioned on the cylindrical building drum. At least one carcass ply, comprising reinforcement elements and having a leading end and a trailing end, is placed onto the lining such that the leading and trailing ends overlap in the overlap zone at the bar or the depression, thereby forming an overlength of the reinforcement elements in the overlap zone for preventing a constriction in the overlap zone within the vulcanized, inflated tire. In the alternative, the carcass ply is folded in the overlap zone into a least one fold to form an overlength of the reinforcement elements in the overlap zone for preventing the constriction in the overlap zone within the vulcanized, inflated tire.

Abstract: A method for manufacturing a tire carcass includes the step of providing a liner of an air-impermeable material. A carcass ply material is prepared by heating and stretching plastic cords and embedding the stretched plastic cords in rubber. A ply of the carcass ply material is placed onto the liner with overlapping leading and trailing ply ends. The overlapping ply ends are heated for returning the stretched plastic cords into an unstretched state. Bead cores are then positioned onto the ply. The lateral edges of the ply are folded over the bead cores. The folded lateral edges and the bead cores are then enveloped by lateral strips.