Method for preparing starch based corrugating adhesives using waste wash water
US5000788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 12, 1990 |
| Grant date | Mar 19, 1991 |
| Priority date | — |
| Expiry date | Apr 12, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J103/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.