Question

The final moisture content of paper after pressing and drying is __________

(a) 4%–10%

(b) 10%–20%

(c) 1%–5%

(d) 40%–50%

The question was asked by my college director while I was bunking the class.

The doubt is from Paper Making in division Paper and Paper Based Packaging Materials of Food Packaging Technology

Answer 1

Right option is (a) 4%–10%

Easiest explanation: The paper is after passing through a series of steam-heated rollers is dried to a final moisture content between 4% and 10%. Other types of dryers are used for special products or situations. For example, the Yankee dryer is a large, steam-heated cylinder, which dries the sheet from one side only, and is used extensively for tissues and to produce machine glazed (MG) papers, the latter having a glazed or shiny surface from intimate contact with the polished dryer surface.