PURPOSE: To enable the finished width of a tire cord ply to be set according to the cord parallel bodies to be embedded, moreover, to the cross-sectional width in the position, and also enable an finished accuracy to be enhanced in the completed tire cord ply.

CONSTITUTION: Prior to a calender process B, a measuring process A is provided for measuring the code end positions of parallel bodies 3 of a cord parallel body 3 by standardizing the calender standard point P. Also, on the basis of a record of the measuring process A in the following processes of the calender process B, by cutting the pressed out part of a topping rubber transferred by the calender process B, a width arrangement process C is provided for trimming the pressed out length of the topping rubber of a tire cord ply 5.