Methods for manufacturing a tire wheel of vehicle hired and coiling an element in layers of elastomeric material, and apparatus for manufacturing tyres for vehicle hired wheels and designed to form elements in layers of elastomeric material

摘要

Methods for manufacturing a tire wheel of vehicle hired and coiling an element in layers of elastomeric material, and apparatus for manufacturing tyres for vehicle hired wheels and designed to form elements in layers of elastomeric material.During the manufacture of a tyre for motor vehicles, one or more structural elements (8, 9, 10, 11) of elastomeric material such as a tread (8) with a respective sub layer (9) is (are) made (s) by placing a continuous elongated element (117) in the structure. Car Game (2) or other substrate conformation,The elongated element is longitudinally divided into a first and a second portions mutually coupled (125, 126) which are obtained through the extrusion of two elastomeric materials different from respective extruders (120, 121) leading to a matrix of extrusion for M (119).The placement of the coils (128) takes place so that the first and second materials form a first layer (130), and a second layer (131) to superimpose the first layer respectively.