First-half 2006 ink industry statistics highlighted a widening performance gap between solvent-based and water-based flexographic packaging inks in the United States. While overall packaging ink sales grew modestly in volume, solvent flexo ink sales jumped 12.8% on a 3.6% volume increase—evidence that flexible packaging and film printing demand remained robust even as ink manufacturers raised prices to recover escalating raw-material costs.
Solvent flexo retained advantages on non-absorbent substrates used in snack, pet food, and barrier-laminate structures: adhesion to treated PE and PP, dot fidelity on CI drums, and compatibility with high-speed drying between stations on wide-web presses. Gravure solvent inks showed similar momentum with 6.6% volume growth, reflecting continued investment in rotogravure for long-run flexible packaging jobs.
Water-based flexo volume fell 6.2% in the same period, partly because corrugated and some paperboard applications faced offshore competition and because certain brand owners had not yet approved water-based systems for plastic film work requiring grease and oxygen barriers. Converters serving multinational food accounts still defaulted to solvent or gravure for critical laminate print layers.
Ink suppliers including Sun Chemical, Siegwerk, and Flint Group emphasized formulation stability and regulatory documentation as brand owners tightened migration testing after the 2005 Nestlé ITX incident. Solvent flexo lines with established food-compliance histories benefited from customer risk aversion, even as R&D budgets increased for EB, UV, and low-migration alternatives.
The 2006 solvent-flexo growth curve informed machinery sales as well: CI flexo and tandem press orders from Comexi, Windmöller & Hölscher, and Bobst Group's Fischer & Krecke lines remained tied to solvent ink infrastructure. Converters planning press upgrades weighed whether to invest in conventional drying chains or pilot EB modules—a debate that would intensify at drupa 2008.