The joint organization of European publishing paper manufacturers (cepiprint) has reached an agreement to provide another year of funding for further research to find solutions to the problem of deinking of water-based flexographic printing paper.
The study was hosted by the Paper Technology Center (CTP) headquartered in Grenoble, France, and was assisted by organizations like the International Deinking Paper Industry Association. Other participating institutions are ink manufacturers, paper mills, printing plants and printing equipment manufacturers.
The research plan consists of three steps: improving the water-based ink to make it easier to remove after printing; improving the deinking process to increase the removal rate of the water-based ink; using the new deinking process on the improved ink to detect the effect.
The La Repubblica newsprint mill in Italy and the Harmsworth Quays printing plant in the UK have already conducted industrial printing trials. In addition, some other newsprint mills have also conducted industrial deinking tests, including the Aylesford plant with 50% shares in Mondi and SCA in the UK, the Bridgewater plant in Abitibi-Consolidated, and the Mantova plant in Burgo Marchi, Italy.
The report provided by the GTP shows that the research has made some progress, but further research is needed, so the French organization calls for an extension of 2 years to continue the research and complete it in 2008. GEPIPRINT agreed to provide another year of funding, and the project is scheduled to end after one year.
Because water-based inks used in newsprint printing do not cause pollution or stick to readers' hands, flexographic printing is widely welcomed by newspaper publishers. According to GEPIPRINT, offset presses are gradually being replaced by flexographic printing throughout Europe, especially in the United Kingdom and Italy. This method has proven its advanced nature, such as relatively low installation and operating costs, and short operating cycles. .
Since it is not easy to remove the ink using the existing technology, the following problem is to find an effective way to recycle the flexographic printing paper. Here also involves the quality of recycled fiber. In the case of recycled newsprint as a very high proportion of raw materials, the quality of recycled fibers is critical.
GEPIPRINT believes that if flexographic printing paper accounts for an increasing proportion of recycled paper, operators will import high-quality waste paper containing less flexo paper from abroad. To solve this problem, they have been one of the main sponsors of this research since 2002.
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