Method and facility for manufacturing a tire blank by means of a strip

摘要

In the method for manufacturing an uncured blank of a vehicle tire, a strip (30) of rubber is extruded and is made to pass between two members (18, 10) one of which forms a roller (18) for extruding the strip, such that the faces (21, 23) of the strip, forming one and the same section of the strip in a plane perpendicular to a direction of travel of the strip and pressing simultaneously against the respective members, are driven at linear speeds that differ from one another, and that the members (18, 10) stretch the strip between them.

主权项

1. A method for manufacturing an uncured blank of a vehicle tire, wherein a strip of rubber is extruded and is made to pass between two members, one of which forms a roller for extruding the strip, such that faces of the strip, forming one and the same section of the strip in a plane perpendicular to a direction of travel of the strip and pressing simultaneously against the respective members, are driven at linear speeds that differ from one another, and that the members stretch the strip between them, wherein the difference between the linear speeds of the faces, in said section of the strip pressed simultaneously against the two members, increases and decreases during the manufacturing so as to modify the cross-sectional area of the strip, each linear speed difference corresponding to a respective cross-sectional area.