Cpc International, Inc.

Corn Products International, Inc.

James J Pienkowski

Jack R Wallace

Larry E Fitt

J E Giesfeldt

J E Todd Giesfeldt

Starch-based corrugating adhesives of the carrier, no-carrier and carrier-no-carrier type having improved green strength and water resistance are prepared by adding hemicellulose to the adhesive composition. When the adhesive is the carrier type or the carrier-no-carrier type, the hemicellulose can be extracted from corn fiber in situ during the process of preparing the carrier phase.

Starch-hemicellulose adhesive for high speed corrugating

Corrugating adhesives of the carrier, no-carrier and carrier-no-carrier type having excellent dry pin adhesion, green strength and improved water resistance are prepared with solubilized fiber as a complete or partial substitute for starch. The adhesive composition contains solubilized fiber and, optionally, from about 0.1% to about 99% added starch by weight based on total solubilized fiber and added starch. When the adhesive is the carrier type or the carrier-no-carrier type, the fiber, preferably corn fiber, can be solubilized in situ during the process of preparing the carrier phase.

High speed corrugating adhesive incorporating solubilized cellulosic fiber

Corrugating adhesives of the carrier, no-carrier and carrier-no-carrier type having excellent dry pin adhesion, green strength and improved water resistance are prepared with solubilized plant fiber as a complete or partial substitute for starch. The adhesive composition contains polyvinyl alcohol, solubilized fiber and, optionally, from about 0.1% to about 99% added starch by weight based on total solubilized fiber and added starch. When the adhesive is the carrier type or the carrier-no-carrier type, the fiber can be solubilized in situ during the process of preparing the carrier phase.

Corrugating adhesive incorporating solubilized cellulosic fiber and

A high speed corrugating adhesive having a carrier phase comprised of starch, modified starch or dextrin and polyvinyl alcohol in an aqueous emulsion wherein a cold water soluble, partially hydrolyzed, polyvinyl alcohol is used as a starting material. The polyvinyl alcohol is further hydrolyzed in situ to a degree of hydrolysis of more than about 95% by heating it in the presence of water, caustic, and starch, modified starch or dextrin. The carrier phase is admixed with a boron containing compound and a suspension of water and starch to prepare the corrugating adhesive for use in a corrugating machine.

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Oak Forest, IL, United States of America

James J Pienkowski