METHOD OF INCREASING PAPER SURFACE STRENGTH BY USING ACRYLIC ACID/ACRYLAMIDE COPOLYMER IN A SIZE PRESS FORMULATION CONTAINING STARCH

摘要

The invention provides methods and compositions for increasing the strengthening effect of a starch coating on paper. The method involves contacting the starch with a synthetic polymer before the starch is cooked. This changes how the starch gelatinizes and how the polymer gets distributed on the paper resulting in greater paper surface strength.