Papermaking Technology Kylie Diges CBE 555 April 23, 2012
Outline History of Paper Manual Papermaking Industrial Papermaking Process Upcoming Technologies
What is paper? A thin material produced by pressing fibers together.
History of Paper 2400 B.C- papyrus (ancient Egyptians) 105 A.D. – Modern concept of paper (China)
Manual Papermaking Process used up until the 19th century Overall Process: Fiber preparation Sheet forming Pressing Drying Limitation: The size of the sheet was limited to the size of the frame.
Industrial Papermaking First introduced early 1800’s Still follows the same general procedure used in manual paper making fiber preparation, sheet forming, pressing, drying
Paper Machines Pulping & Stock Preparation Have 4 main sections: Forming Press Drying Calender
Pulping Overview: http://www.youtube.com/watch?v=jGH7kQ30SKo&feature=related
Forming Section Headbox Slice Wire Dandy Roll
Press Section
Drying Section
Yankee Dryer/Creping http://www.youtube.com/watch?v=0_36tnbHc2Q
Calender Section Calender: series of hard pressure rollers used to smooth the sheet Slitter & Rewinder
Paper Machine Video http://www.youtube.com/watch?v=7SdJtYkAzTw&feature=related
Fiber Sources Fibers are typically made of cellulose pulp Current: cotton, wood, wastepaper, synthetic fibers Historically: plant pitch, bark, pressed animal skin Alternative fibers wheat, barley, oat, rye and rice straws or sugarcane Waste paper- post consumer
References http://earth911.com/recycling/paper/what-is-paper-and-how-is-it-made/ http://how-to-make-paper.com/index.php?option=com_content&task=view&id=33&Itemid=48 http://totallyhistory.com/the-invention-of-paper/ http://inventors.about.com/od/pstartinventions/a/papermaking.htm http://www.britannica.com/EBchecked/topic/1357055/papermaking/82432/Fibre-sources http://www.albint.com/businesses/pmc/Pages/default.aspx Iggesund Paperboard AB (2008). Paperboard the Iggesund Way. p. 15. http://www.wilsonhurst.com/technology/paper/paper.htm http://www.paper-machinery.com/dictionary/Fourdrinier_Wire.asp http://www.ecy.wa.gov/programs/air/pdfs/pulpmil3.pdf http://www.paperhall.org/info/glossary.html http://www.jefflindsay.com/tissue.shtml http://www.sca.com/Global/Publicationpapers/pdf/Brochures/Papermaking.pdf?epslanguage=en http://informinc.org/pages/index.php?option=com_content&view=article&id=179
Questions?