Analysis of UV-LED curing technology and existing problems of varnish for printed matter

Abstract

UV-LED curing v arnish i s m ore en vironmental. I n or der t o l et people under stand UV-LED c uring v arnish a nd exi sting p roblems of U V-LED curing t echnology a nd p rovide reference and theoretical basis for the future development of UV-LED curing varnish, the paper sketched basic composition of UV-LED varnish and curing process and pointed low initiation efficiency a nd s low c uring s peed w ere t he main p roblems of t he U V-LED l ight c uring technology t hrough r eferring t o a l arge nu mber of doc uments a nd r elated da ta. T he s olutions are suggested: First, the photoinitiators with absorption spectra matched to emission spectra of LED should be selected; second, monomers with more functional groups should be used.