| 摘要 |
Disclosed is a method of recovering and recycling waste paper coating from a papermaking coating process for use as wet end filler in a subsequent papermaking process. The method comprises mixing the waste coating with filler particles, optionally adding de-foaming agent, adding cationic agent, and adding a flocculant to cause mixing without flocculation. A second flocculating agent is added and this flocculated mixture of filler and waste coating defines a new filler material. The filler material is then added to a furnish comprising cellulose fibres and water. |
