1. Papermaking Technology
Kylie Diges
CBE 555
April 23, 2012

2. Outline History of Paper Manual Papermaking
Industrial Papermaking Process
Upcoming Technologies

3. What is paper?
A thin material produced by pressing fibers together.

4. History of Paper 2400 B.C- papyrus (ancient Egyptians)
105 A.D. – Modern concept of paper (China)

5. 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.

6. Industrial Papermaking
First introduced early 1800’s
Still follows the same general procedure used in manual paper making
fiber preparation, sheet forming, pressing, drying

7. Paper Machines Pulping & Stock Preparation Have 4 main sections:
Forming
Press
Drying
Calender

8. Pulping
Overview:

10. Forming Section
Headbox
Slice
Wire
Dandy Roll

11. Press Section

12. Drying Section

13. Yankee Dryer/Creping

14. Calender Section
Calender: series of hard pressure rollers used to smooth the sheet
Slitter & Rewinder

15. Paper Machine Video

16. 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

17. References
Iggesund Paperboard AB (2008). Paperboard the Iggesund Way. p. 15.

18. Questions?