Unit 1 The History of Papermaking (1) 1.1 Writing Materials Prior to the Invention of Paper (1) 1.2 The Invention of Paper (2) 1.3 The Spread of Papermaking (3) 1.4 Modem Papermaking ...... Unit2 Raw Materials (7) 2.1 Wood Materials (7) 2.2 Non-wood Materials (8) 2.3 Wood Fiber Structure (10) 2.4 Fiber Chemical Components .......................... (11) Unit 3 Alkaline Pulping (15) 3.1 Kraft Pulping ..... 3.2 Soda Pulping (17) Unit4 Sulfte Pulping ....... Unit 5 Mechanical Pulping 5.1 Stone Ground Wood ( SGW ) (23) 5.2 Refiner Mechanical Pulp ( RMP) ...... Unit 6 Recovered Paper Pulping (27) 6.1 Definition of Recovered Paper .......................... (27) 6.2 Sources and Types of Recovered Paper ..... 6.3 The Main Steps of Recycling and Deinking Technology (28)