Patent ID: 7176415
Filing Date: 2007-02-13
Classification: G03D

Abstract:
1. A heating method for a band-shaped body transported in a constant conveying direction in a heating zone so as to heat it, comprising: detecting whether or not a joint portion of the band-shaped body is passing through the heating zone, at which joint portion a first band-shaped body is joined to a second band-shaped body with at least one of different width or different thickness; before detecting the joint portion pass into the heating zone, setting a first supplied heat quantity based on dimensions of the first band-shaped body on a downstream side of the joint portion in the conveying direction, and supplying heat with the first supplied quantity to the band-shaped body in the heating zone; and after detecting that the joint portion has passed into the heating zone, setting a second supplied heat quantity based on dimensions of the second band-shaped body on an upstream side of the joint portion relative to the conveying direction, and supplying heat with the second supplied quantity to the band-shaped body in the heating zone, so as to adjust a temperature history of the band-shaped body so that the temperature history is approximately uniform on both upstream and downstream sides of the joint portion.