Papermakers experience with improved talcs for pitch and stickies control in Europe and North America

摘要

Modern papermaking requires modem additives, especially with the growing importance of environmental protection, the need to improve cost efficiency and safe product handling. Talc is the natural product for the paper industry with three main properties, hydrophilic/organophilic surface, softness and platy structure. Most talc applications are based on the improved quality or reduced cost talc offers to the end users. The fact that talc is chemically inert makes it safe for handling and application as well as an environmental friendly product. In this paper the experience with novel surface-treated talcs in six European, North and South America paper mills is presented. More specifically, these experiences describe the successful control of pitch and stickies obtained with two types of surface-treated talcs at four newsprint mills, a fine paper mill and a paperboard mill using a variety of pulps including mechanical (TMP and groundwood) and recycled pulps or combinations thereof.