PAPERmaking! g FROM THE PUBLISHERS OF PAPER TECHNOLOGY Volume 1, Number 1, 2015
C ᅯ iFilm® coating starch: Customer focussed development of nature-derived binder for coating of Paper and Board
The papermaking industry and especially the coated graphical papers have to face various challenges. Europe is an aging society in a mature market showing quite limited growth rates. People’s life style is changing rapidly especially regarding work environment (e.g. home offices and flexibility of people), communication and electronic media as well as social networking and on-line shopping to name a few. For the paper industry these trends led to an increasing consolidation combined with rationalism of companies, their production processes and product portfolio. During the crises in 2008/9 the graphical paper industry was hit heavily and a further decline of about 3% on year’s average is expected for the future. As a result the paper industry in Europe is focusing nowadays on cost optimisation at maintained quality. The trend towards greener and more environmentally sustainable paper making process led to an increased use of starches in coating during the recent years. Papermakers realised that by using classical coating starches, further cost optimisation has reached its boundaries. Some further developments of nature-derived cost effective coating binders remain today possible thanks to a close cooperation between papermaker and starch supplier fully aware of its specific requirements and needs. Technical optimisation We know paper coating requires fine-tuning of multiple parameters to optimise runnability and performance e.g. coating colour rheology, water retention, coater adjustment. It is about taking a holistic view, rather than looking at the effect of starch in isolation. Advanced instrumentation techniques allow us to understand the rheological behaviour of starch, its interactions with other coating colour components and interactions between the coating colours and the base paper. The positive effects seen for the new products were revealed in coating colour formulations by measuring water retention, high shear viscosity as well as intrinsic coating structure.
The full article about the newly developed C*iFilm coating starch will be published in the PITA Annual Review .
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