Oct 2, 2018
Side opposite to the front; side facing away from the reel or windup.
Special calender roll lifting tools; typically used in supercalenders. These tools are placed onto the ends of the roll shaft before lifting the roll in/out of the stack.
Side to side movement, along the face of the roll; from the tend side to drive side or the drive side to tend side.
Side of machine with main drive.
Windup or reel side of the calender; side facing outgoing paper; lead-out side of calender.
Between the frames.
Typically used with supercalenders to identify threading platforms. Synonymous with "front side"; windup or reel side of the calender; side facing outgoing paper; lead-out side of calender.
Carry rolls, spreader rolls, etc. which lead the web from the previous machine into the calender.
Carry rolls, spreader rolls, etc. which lead the web out of the calender and into the next machine.
An on-line calender. Typically consists of all hard rolls.
Movement forward or back along the web path.
The calender stack section is combined with an unwind and windup/reel, and is located independently from any paper machine. The group of three machines can also be referred to as the calender.
The calender stack section is a single machine within a paper machine or coater line. On-machine calenders do not have an unwind or windup.
Outside the frames.
Typically used with supercalenders to identify threading platforms. Synonymous with "back side"; side opposite to the front; side facing away from the reel or windup.
A device used to apply steam to the paper as it enters nips of the calender stack.
NOTE: A steam shower located in the pocket between a calender stack roll and its corresponding fly roll may be referred to as a "pocket" steam shower.
The calendering section of the calender. Although this term is typically used to refer to a vertical stack of 3 or more rolls, this term will also be used for single nip calenders.
Side opposite the main drive. Typical location for operator controls and operator access.
A moveable platform, typically located on a supercalender, and used to reach the stack section for threading or maintenance. May be accessed by stationary platforms.
De-mineralized boiler quality water (like condensate) which is pumped through the rolls in a closed loop system to heat, cool, or distribute the temperature of the rolls. Refer to supplier datasheets for specifications.
Typical mill cooling water; non-processed water which is typically used to cool the process water. Heat is transferred from the process water to the mill water within a heat exchanger, then returned to the general mill circulation.
Typically, 150 PSI steam at less than 465 °F. Steam is typically used to heat the process water in a heat exchanger. It may also be used as a direct heating medium in some calender designs.
Water created from cooling steam.
A heat transfer fluid which is pumped through the rolls in a closed loop system to heat or cool the rolls. Refer to supplier datasheets for specifications.
NOTE: The type of "oil" is selected specifically at design time and may not be substituted with any other variety or warranties will be voided.
A heat exchanger which cools the process water or oil by transferring the heat to mill water.
A refrigerating unit.
Depending on the system:
Calender configuration in which the windup and unwind stands are on the same side of the calender stack.
Calender configuration in which the windup and unwind stands are on opposite sides of the calender stack.
Calender configuration in which the windup and unwind stands are on opposite sides of the calender stack but in the same horizontal plane.
Rolls in the calender stack are guided by ways, one on each end of the roll.
Rolls in the calender stack are guided by ways, two (2) on each end of the roll.
For more information on calender terminology or assistance with calender maintenance, contact your Valmet representative.