Patent ID: 6039826
Filing Date: 2000-03-21
Classification: B29C,B29D

Abstract:
A method of forming a green tire comprising the steps of:directly winding a rubber strip formed by simultaneously extruding unvulcanized rubber in a shape of the rubber strip from an extruder onto an adjusting drum in a length corresponding to the rubber quantity of a tire constituent portion, said adjusting drum comprising a straight cylinder having a same diameter in an axial direction thereof, and said rubber strip being spirally wound in a single layer at a predetermined pitch on an outer circumference of said adjusting drum in such a manner as to have adjacent portions of said rubber strip spaced apart from one another so that there is no strip overlap; andforming said tire constituent portion by winding said rubber strip a plurality of times on an outer peripheral side of a rotary support member while unwinding said rubber strip from said adjusting drum.