Abstract
The present time, ink-jet technology has been spread out in wide-ranging fields because it is capable of setting the required functional materials on the necessary location. UV-curable jet ink that environmentally friendly and dry immediately, has been used for industrial printing such as a wide format printer. It is expected to print various non-porous surfaces. But it is difficult to design the ink formulation having good adhesive strength on the whole ones. Basically, the ink makes it possible to adhere to the non-porous surface by optimizing the parameter of interfacial chemistry. But, enough adhesive strength could not be obtained frequently. In this study, it was examined that adhesive property of radical polymerization type UV-curable jet ink included hydrogen abstraction type photo-initiator, while we expected that the strong adhesive strength existed between the ink and non-porous surface. As a result, it was possible strongly to adhere to the PET film by less amount of chemical reaction of monomers comparing with use of cleavage type photo-initiator. It is clear that a strong bonding strength generates from photo-induced graft polymerization.
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