Patent ID: 6117261
Filing Date: 2000-09-12
Classification: B31F,B32B,B65H,Y10T

Abstract:
A method of adjusting a tension to a single-faced corrugated fiberboard sheet manufactured by adhering a liner onto a corrugated sheet, comprising the steps of:(a) winding said single-faced corrugated fiberboard sheet around at least one first roll;(b) guiding said single-faced corrugated fiberboard sheet by one or more second rolls at positions directly upstream and downstream of said first roll during said winding in said step (a) so as to define a contact angle of said single-faced corrugated fiberboard sheet with respect to said roll; and(c) changing a braking force to said first roll during said winding in said step (a) according to said contact angle defined in said step (b) so as to adjust a tension to said single-faced corrugated fiberboard sheet.