Water Based Flexographic Inks - Reality or Myth, 1998 Polymers, Laminations & Coatings Conference Proceedings
This talk will review the reasons why water based flexographic printing inks perform so successfully on a wide variety of hardware and substrates, yet still fail at other locations using the similar hardware, inks and substrates. In most cases the failures have been due to drying, surface chemistry (adhesion, wetting phenomenon, printability, etc.), water resistance (or lack of), and foam. We will discuss each stressing the following:
1. Diving - Water based ink chemistry, thermodynamics of water vs. solvent, and drying oven conditions.
2. Surface Chemisuy - Surface energy components (polar and dispersion) for ink and substrate.
3. Water resistanc/resolubility - Water based ink chemistry, drying conditions.
4. Foam - Ink chemistry, and mechanical conditions.
Water Based Flexographic Inks - Reality or Myth, 1998 Polymers, Laminations & Coatings Conference Pr