Method for preparing starch based corrugating adhesives using waste wash water
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United States of America Patent
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Mar 19, 1991
Grant Date -
N/A
app pub date -
Apr 12, 1990
filing date -
Apr 12, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A starch based adhesive for use in manufacturing corrugated paper and board is prepared in a single preparation tank 20 by admixing, under high shear vortex mixing, a first portion of aqueous medium, a first starch portion, an aqueous sodium hydroxide, a borating additive, a second portion of aqueous medium and a second starch portion to produce a finished starch adhesive. At least one of the first and second portions of aqueous medium comprises a mixture of fresh water and recycled wash water selected from the group consisting essentially of untreated flexographic printing press wash water, untreated corrugator wash water, and mixtures thereof.
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