Chemical additives are used in the papermaking process for many different reasons, and they are often divided into two groups. Functional chemicals directly improve properties of the sheet, while process chemicals affect operations on or near the paper machine. This module covers the first group – functional chemicals. It discusses the purpose of some of the more common functional additives used on paper and board machines, and describes how they work.
•Describe the purpose and composition of papermaking furnishes
•Differentiate between the two classes of papermaking additives
•Identify strength properties of paper
•Identify the variables that affect the dry strength characteristics of paper
•Describe the purpose and function of common functional additives, including: dry strength additives, wet strength additives, internal sizing agents, fillers and dyes
Industrial Libraries
- Convergence Industrial Maintenance Library
- Convergence Paper Library
- Industrial Premium