Patent Number: 6,168,108

Title: Web tension control apparatus and method

Abstract: A web tension control and apparatus uses a lightweight dancer and a control system that detects web tension using the dancer position as well as downstream sensors to maintain a relatively constant web tension. The control system also adjusts the braking force to an unwind roll based on the diameter of the roll, allowing for greater web tension control. A two-phase braking system prevents the unwind roll from spilling excess paper into the production line.

Inventors: Morley; Robert E. (Overland Park, KS)

Assignee: Hallmark Cards, Incorporated

International Classification: B65H 23/16 (20060101); B65H 23/06 (20060101); B65H 23/04 (20060101); B65H 023/08 ()

Expiration Date: 01/02/2018