Presentation is loading. Please wait.

Presentation is loading. Please wait.

Papermaking Technology

Similar presentations


Presentation on theme: "Papermaking Technology"— Presentation transcript:

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:

9

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?


Download ppt "Papermaking Technology"

Similar presentations


Ads by Google