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world pulppaper 53 Wood contaInIng paper A LWC producer with an online metered size press coating unit compared the performance of a potato based cationic wet-end starch and challenged it against CLiBond wet- end starch. Lower starch consumption better ash retention as well as first pass retention combined with similar paper strength were identified for CLiBond wet-end starch compared to a potato starch with the same cationic degree of substitution. pacKagIng paper Not only printing and writing papers need the addition of a wet-end starch to fulfil strength requirements but the packaging segment can also benefit when suffering from recycled fibre qualities that are becoming weaker. Thus the strength loss has to be compensated via higher surface sizing starch add-on. But starch coat weight is limited because of paper moisture and wet-strength limitations. For paper machines with no surface sizing treatment quite often spray starch andor a high cationic D.S. ca. 0.06 wet-end starch potato or cereal based are utilised. To overcome the problematic with high salt contentshigh conductivities in the water circuit of recycled paper machines and achieve suitable retention and strength wet-end starches with a higher cationic D. of S. of ca. 0.06 are found more often. Like in the next example in which CLiBond wet-end starch was compared with a corn based starch with a cationic D.S. of 0.07. Conductivity was at ca. 4000Scm and starch addition at 6.5 9kgt. Paper machine runnability was maintained and at a similar retention of aid addition starch as well as total retention was kept constant. Compared with the high cationic corn starch 10-14 higher burst and SCT figures were generated by CLiBond wet-end starch despite a 2 higher ash level measurement in the finish paper. SUStaInaBIlItY CLiBond is a cereal-based product that can offer long-term raw material availability cost competitiveness and help to ensure sustainable business growth. for paper machines with no surface sizing treatment quite often spray starch andor a high cationic wet- end starch potato or cereal based are utilised.