Process of deinking waste paper materials
Abstract
Abstract PRINTING INK ON PRINTED PAPER MATERIALS IS DEINKED BY THE PROCESS OF THE PRESENT INVENTION IN WHICH THE PRINTED PAPER MATERIALS ARE BEATEN IN AN AQUEOUS SYSTEM CONTAINING A POLYOLEFIN DISPERSED OR EMULSIFIED IN MICRO-FINE PARTICLES WITH A SURFACE ACTIVE AGENT SUCH AS A DISPERSING AGENT OR EMULSIFIER, AND THEN, RESULTANT WASTES CONTAINING THE PRINTING INK WHICH ARE DESORBED FROM THE PRINTED PAPER MATERIALS AND ADSORBED ON THE POLYOLEFIN PARTICLES ARE ISOLATED FROM THE SYSTEM. HYDROPHILIC POLYMERS SUCH AS STARCH, GLUE AND CARBOXYMETHL CELLULOSE ARE EFFECTIVE FOR STABILIZING THE DEINKING SYSTEM. FURTHER, IT IS HELPFUL FOR SUFFICIENTLY ISOLATING THE WASTES TO ADD ORGANIC SOLVENTS, EMULSIONS CONTAINING THE SOLVENTS, CLAYS, OR WATER SOLUBLE SALTS CAPABLE OF DISASSOCIATING THE DI- OR POLYVALENT METAL CATION IN WATER.
Inventors
- 👤 S Nishikawa
- 👤 S Miyamoto
- 👤 S Kurihara
Bibliographic Details
Claims Analysis
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