Investigation of recycling performance of different types of paper printed with UV inks

Abstract

Waste paper is an important raw material for the paper industry and pulp due to its low cost and sustainability. However, the majority of waste paper contains high volumes of printed paper, which is difficult to deink and limits their application. One of them is printed papers using UV ink. In the study; Papers of different surface structures were printed with LED-UV curable inks. Printed papers were recycled using the INGEDE method 11p. CIEL*a*b* values of the resulting paper sheets were measured; and then compared with those of the base paper. The handsheets obtained via recycling process were viewed with a microscope and the particle sizes were shown. It has been determined that it is very difficult to remove the polymerized UV cured inks from the pulp.