NEW TECHNOLOGY TO IMPROVE THE SUSTAINABILITY OF PAPER, PaperCon 2014

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Mills making paperboard from recycled fiber must deal with reduced paper strength, decreased yield, system contaminants, poor additive efficiency, and increased chemical oxygen demand (COD) levels. Of these issues, loss of strength performance is the most critical. A common response to compensate for strength loss is to apply more internal and surface starch in the papermaking process. This increases starch levels in the final board and therefore in the resulting waste furnish used to make new paperboard. Starch levels in OCC can easily exceed 5%.