Fourdriner Flashcards
1
Q
What does the Fourdrinier process do?
A
Produce paper from pulp
2
Q
What is the first stage?
A
Wet end
Wood pulp - 99% water 1% fibre - in head box
Wood pulp on vibrating gauze belt which drains water and helps fibres to interweave
3
Q
What is the second stage?
A
Press section
Rollers wring out paper - stretches out paper
Space between paper determines thickness (gsm)
4
Q
What is the third stage?
A
Drying section
Steam heated rollers remove moisture
Starches, sizing agents and resins given to enhance paper
5
Q
What is the fourth stage?
A
Calendar Stack
Paper fed through rollers to smooth and give uniform thickness
Pressure applied determines finish
