Patent ID: 6368443
Filing Date: 2002-04-09
Classification: C08L,C09J,Y10T

Abstract:
A method of making corrugated board comprising joining a corrugated medium to at least one liner using a corrugating adhesive composition which in an aqueous emulsion comprises water; from about 10 to about 35 parts per 100 parts of adhesive of a carbohydrate component comprised of unmodified starch and/or modified starch and/or dextrin, and wherein from about 2 to about 6 parts per 100 parts of adhesive of the carbohydrate component is in a carrier phase; from about 0.1 to about 20% by weight hemicellulose based on total carbohydrate wherein the hemicellulose has been extracted from corn fiber in situ in preparing the carrier phase; from about 0.2 to about 1 part per 100 parts of adhesive of boron containing compound and sufficient caustic to attain a pH from about 10 to about 14, wherein the corn fiber in the adhesive has a geometric mean size of less than about 0.00005 inch and a median size of less than about 0.00005 inch.