Corr-Starch -Adhesiveman

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  • Topic: Starch, Maize, Viscosity
  • Pages : 53 (14803 words )
  • Download(s) : 97
  • Published : April 7, 2013
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Corrugating Starch Adhesives Manual

Corn Products International, Inc.
Quality Policy on Products, Services and Customer Relations
It is the policy of Corn Products International, Inc., to provide products that not only meet applicable government quality and safety standards, but also seek to meet evolving customer expectations for quality, value and service; and to assure the accuracy and propriety of all labeling, advertising, and other representations we make concerning our products and services.

INTRODUCTION
This manual is intended as a resource on starch, its relationship to, and use in corrugating. It is designed to make it easier to respond quickly and effectively to adhesive and machine problems. The information presented is based upon actual field and laboratory work. It should not be viewed as providing advice or solutions to particular applications, each of which is unique and not susceptible to general advice. We encourage you to call your representative at Corn Products U.S., CASCO, Inc., or CPIngredientes to discuss your specific situation. We will be happy to lend our support.

TABLE OF CONTENTS
Background . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 The History of Starch . . . . . . . . . . . . . . . . . . . . . . .3 The Corn Wet Milling Process . . . . . . . . . . . . . . . . .4 The Role of Corn . . . . . . . . . . . . . . . . . . . . . . . . . .6 Starch Basics for Corrugated Board . . . . . . . . . . . . .7 Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Low Viscosity . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 High Viscosity (Thick, Heavy Adhesive) . . . . . . . . . .9 Effects of Shear on Viscosity . . . . . . . . . . . . . . . . . .9 The Temperature Viscosity Control System . . . . . . . .10 Viscosity/Time Relationship . . . . . . . . . . . . . . . . .11 Viscosity/Resin Relationship . . . . . . . . . . . . . . . . .11 Microbiological Degradation . . . . . . . . . . . . . . . . .11 Care with Biocides . . . . . . . . . . . . . . . . . . . . . . . .11 Gelatinization Temperature . . . . . . . . . . . . . . . . . . . .12 Gel Temperature Too High . . . . . . . . . . . . . . . . . . .12 Gel Temperature Too Low . . . . . . . . . . . . . . . . . . .12 Gel Temperature/Time Relationship . . . . . . . . . . . .12 Determination of Caustic Concentration In Liquid Caustic . . . . . . . . . . . . . . . . . . . . . .12 Corrugating Additives . . . . . . . . . . . . . . . . . . . . . . . .13 Penetrating Aids . . . . . . . . . . . . . . . . . . . . . . . . .13 Antifoam Agents . . . . . . . . . . . . . . . . . . . . . . . . .13 Liquid Additives . . . . . . . . . . . . . . . . . . . . . . . . .13 Resins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Corrugating Processes/Systems/Equipment . . . . . . . . . .15 Stein Hall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Jet Cook . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 High Shear . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 No-Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Starch Properties and Testing . . . . . . . . . . . . . . . . . .17 Alkali (Caustic) Sensitivity . . . . . . . . . . . . . . . . . .17 Measuring Viscosity of Finished Starch Adhesive . . . . . . . . . . . . . . . . 17 Calibrating the Stein Hall Cup . . . . . . . . . . . . . . . .17 Gelatinization Temperature . . . . . . . . . . . . . . . . . .17 Microbiological Testing . . . . . . . . . . . . . . . . . . . . .17 Starch Solids Concentration . . . . . . . . . . . . . . . . .17 Board Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Quality Monitoring and Control at the Adhesive Station . . . . . . . . . . . . . . . . . . . . . .21 Statistical Process Control . . . . . . . . . . . . . . . . . .21 Troubleshooting Common Corrugating Problems . . . . . . . . . . . . . . . . . . . . . .23 Diagnosing Viscosity Problems . . . . . . . . ....
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