Calender- Reel and Winder Section for Paper Machine
Product Specification
- Calender Section A calender consists of two or more rolls, where pressure is applied to the passing paper. Calenders are used to make the paper surface extra smooth and glossy. It also gives it a more uniform thickness. The pressure applied to the web by the rollers determines the finish of the paper.
- Winder Section
- The paper is wound onto metal spools using a large cylinder called a reel drum. Constant nip pressure is maintained between the reel drum and the spool, allowing the resulting friction to spin the spool. Paper runs over the top of the reel drum and is wound onto the spool to create a master roll.
- Wonder Section
- Reels of paper wound up at the end of the drying process are the full trimmed width, minus shrinkage from drying, of the web leaving the wire. In the winder section reels of paper are slit into smaller rolls of a width and roll diameter range specified by a customer order. To accomplish this the reel is placed on an unwind stand and the distances between the slitters (sharp cutting wheels), are adjusted to the specified widths for the orders. The winder is run until the desired roll diameter is reached and the rolls are labeled according to size and order before being sent to shipping or the warehouse. A reel usually has sufficient diameter to make two or more sets of rolls
