Every time a paper or board machine is started up after a shutdown, and following wet end sheet breaks, it is necessary to rethread the sheet from the forming section to the reel. After dry end sheet breaks, the sheet must be threaded through some portion of the machine. This module will describe the sheet threading process on a paper or board machine and the main components of a carrier rope system, including rope sheaves, rope tensioners, and rope drives.
•Describe the sheet threading process on a paper or board machine
•Identify the purpose of tail threading equipment
•Recognize the safety hazards and safety guidelines associated with tail threading equipment
•Identify and describe the main components of a carrier rope system, including rope sheaves, rope tensioners, and rope drives
•Identify and describe tail cutter and tail breaker equipment
•Identify the function of tail cutters and tail breakers
•Identify and describe threading devices, including belt conveyors, threader pans and chutes, and air showers/ nozzles
•Describe the operation of threading devices, including belt conveyors, threading chutes, and air nozzles
•Identify and describe the main components and primary flows of common tail threading systems
