PROCESS SOLUTIONS TO HANDLE SMALL AMOUNTS OF FLEXO IN WOODCONTAINING RAW MATERIAL

摘要

Standard waterbased inks are not deinkable in conventional alkaline deinking process. A research programme has been coordinated, since 1998, in the framework of the taskforce " FOR THE DEVELOPMENT OF A COST EFFECTIVE SOLUTION TO THE DEINKING OF WATERBASED INK PRINTED PAPERS. Investigations were focused on the formulation and development of improved deinkability inks, by ink suppliers and necessary the adaptations of the deinking process to improve its efficiency. Ink suppliers participating in the taskforce have achieved significant improvements of deinkability of waterbased ink, for news printing as well as envelope printing. An ink supplier has developed deinkable waterbased inks which were successfully used for industrial printing of envelopes while another is in the process of doing the same. Deinkability of flexo waterbased inks for news has been largely improved but newly developed inks cannot be already considered as correctly deinkable.