The impact of defoaming agents on papermaking
Foam generally appears in paper pulp, which is very annoying and hinders the effective operation of the equipment. So what is the impact of defoaming agents on papermaking?
1. Great influence
Foam has a great impact on the papermaking process. Foam appears in the paper stock, causing fluctuations in the headbox and making the paper flow extremely unstable; it can seal the small holes on the wet paper surface, causing ineffective dehydration of the web, causing the fibers and undispersed fillers to agglomerate, affecting Optimal formation of paper.
2. Floating slurry will appear
The foam will also appear in the form of floating slurry, causing the paper material to appear lumpy when it is put online. In severe cases, it may break. When making paperboard, foam appears between the paperboard layers, which greatly reduces the strength between the layers and causes paper defects such as foam holes and spots between the paperboards.
