摘要:
Carcass plies for radial-ply tires are prepared by coating individual reinforcing strands with a rubber composition, and winding the coated strands in a winding machine with relatively weak transverse circumferential strands into a continuous cylindrical tube in which the reinforcing strands are substantially parallel to the tube axis and circumferentially spaced, and are connected by the circumferential strands of weaker material. Axial sections are cut from the tube, and only the axially central, annular portion of each section is expanded radially during shaping of the carcass, thereby stretching or breaking the transverse, circumferential strands.
摘要:
A device intended for creating a reinforcing strip formed by flattening a tube (t) comprising a first means for dispensing a tape (b) comprising an interleaf (D on one of its faces, at a given linear speed, and a second means comprising two rolls intended to flatten the said tube (t), in which device the said first and second means are able to be set in rotation relative to one another about an axis of rotation (XX′) parallel to the direction (p) in which the tape (b) progresses through the device, so that when the device is operating, the tape (b) is wound in a spiral on itself in contiguous turns to form a tube (t) the axis of which corresponds substantially to the axis (XX′) of rotation of the first means with respect to the second means, characterized in that it comprises a means (3) of calibrating the diameter of the tube (t) and positioned between the first and second means, and in that the said calibration means (3) rests against the exterior surface of the said tube (t), and a separation means (27) positioned downstream of the said second means and able to separate the said interleaf (I) from the surface of the flattened tube.
摘要:
A pneumatic vehicle tire having a belt layer at the outside of a carcass layer of the tread, wherein a plurality of mutually parallel reinforcement cords are wound back and forth in a spiral at a predetermined angle to the longitudinal direction and embedded in a matrix of a lateral flattened tubular cross-section to form a continuous tape and the continuous tape is continuously wound around the outer circumference of the carcass layer a plurality of times in a spiral to form the belt layer or a pneumatic vehicle tire having a continuous tape, composed of a two-layer construction consisting of a plurality of aligned rubberized reinforcement cords wound in a spiral to form a lateral flattened tubular cross-section and an elastic cord inserted inside the flattened tube along its longitudinal direction as a core member, continuously wound over an outer circumference of a carcass layer at a tread in a spiral with a slight angle with respect to the tire circumferential direction to form a belt layer.