-the webtreads through a series of large steam-heated cylinder dryers with smaller-diameter rollers in between them.
-the paper heats up as it passes around each dryer, and the moisture is flashed off in the pocket between the top and bottom cylinders before the paper goes around the next dryer.
-The side of the paper in contact with the dryer rolls alternates. The rolls are usually 4-6 feet (1.5-1.8 meters) in diameter, and the dryer section is typically about 230 feet (70 meters) in length.
-the web is supported and held in contact with the dryers by a permeable fabric called the dryer felt. Most paper machines have there to five independently felted sections.
-Lightweight paper needs to be carried by felt on both sides for stability. On heavy-weight paper and paperboard , the web is indirect contact with the dryer rolls.
-the temper board of dryers increase gradually through the section, reaching a mixmim of 170-200 c before being reduced again in the final section.
-hot air is often also employed. Because the web is cooled by evaporation , its temperature stays at approximately 100
-Toward the end of the drying process, coating materials such as starch sizing may be added. To fill surface voids and add resistance to penetration by water.