Repulping Paper with High Wet-Strength

摘要

A new eco-friendly wet-strength repulping aid demonstrates economic benefits to tissue makers.Wet-strengthened paper grades often require a use of oxidative repulping aids.Traditional hypochlorite is undesirable due to its hazardous nature and a contribution to AOX.New stricter regulations,especially in Europe,will restrict its use even further.Alternative persulfate powders are more eco-friendly,but often limited in their effectiveness and have some drawbacks,e.g.,alkaline yellowing of pulp.