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COATING STARCH ADVANCES WORLD PULPPAPER80 has become faster and bigger in order to achieve longer and smoother production runs. The binder type and content have been optimised to meet these demands coupled with the cost aspect as mentioned before. The skilled specialists and scientific experts at Cargill have focused their developments on specially designed starches for high stability beneficial coating rheology at high solids coating combined with superior binding power. With our products made from renewable natural resources C Film C iCoat and C iFilm coating starches we have been able to increase the utilisation of our naturally derived and specialised products on a step-by-step basis in the coating binder composition. m per side a standard coating system employing 45 latex plus 55 classic starch was tested and compared to a recipe containing 35 latex plus 65 C iFilm coating starch. During a run no rod spitting or misting were observed. Rheology measurements of high-shear viscosity represented by ACA measurements as well as rod pressures were comparable. Due to a higher starch quantity the OBA carrier function was improved CIE Whiteness whereas there were no differences observed in the glossprinting gloss surface strength and mottling. The newly developed starch was able to simplify the coating formulation only one synthetic binder instead of two show improved binding power it was possible to replace 2.5 parts of latex by 2 parts of the C iFilm coating starch whilst giving superior coater runnability without comprising the quality of paper produced. SUMMARY As shown in Figure 3 the coating colour binder composition has developed significantly over 30 years. The formulations and the production portfolio of paper grades have both become very much more simplified whilst at the same time the machinery ... the coating colour binder composition has developed significantly over the last 30 years