New Dry Strength Program Solves Print Delamination for Folding Box Board Producer

GoalSolve print delamination for folding box board producer.

<h6>Customer Challenge</h6> <p>A coated folding box board producer producing three plies (Bleached Chemi-Thermo Mechanical Pulp in the mid-ply) was experiencing issues with print delamination at the print-house. Delamination was occurring between the top and middle plies. Test indicated that the correlation to internal picking IGT test, which was between 4 and 5, should have been between 2 and 2.5 to avoid any printability problems.</p> <h6>Recommended Solution</h6> <p>Applying 2 g/m&sup2; of sprayed starch between the top and middle plies did not solve the issue. Solenis experts commenced a program of Hercobond 7700-EU dry strength sprayed onto the top surface of the middle ply.</p> <h6>Results Achieved</h6> <p>On 300 g/m&sup2; board, the Hercobond 7700-EU sprayed together with starch reduced the internal picking test result from 5 to between 2.0 and 2.5. The Scott Bond result improved by 25% compared to starch alone.</p> <p><img style="max-width: 100%; width: auto; height: auto; display: block; margin-left: auto; margin-right: auto;" src="/link/6ab2b2131ba64dbea0784294268466b7.aspx" alt="" width="860" height="608" /></p>