METHOD FOR STABILIZING THE WHITENESS OF FLUORESCENT WHITENING AGENT(S)(FWA) INCLUDED IN SURFACE-TREATMENT SIZE/COATING SLIP FOR PAPER AND OF SURFACE-TREATMENT LAYERS FORMED THEREOF

摘要

The present invention relates to a method for increasing the whiteness stability of fluorescent whitening agent(s) (FWA) included in surface-treatment size/coating slip for paper and of the surface-treatment layers formed thereof. The method is characterized in that sorbitol is charged to the size/coating slip as a carrier.