Trying to simplify ink inventory? This guide explains when one ink can be used across several packaging types—and when it can’t.
When it works
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Products share similar materials (e.g. all PET or all cardboard)
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Line conditions are consistent (speed, environment)
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Ink is general-purpose (e.g. high-contrast MEK)
When it causes problems
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Mixed materials (plastic + foil + glass)
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Some lines need faster drying than others
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Some surfaces repel ink (e.g. oily, coated)
Decision checklist
| Factor | Ideal for multi-use? |
|---|---|
| Adhesion on all substrates | ✅ |
| Meets all drying speeds | ✅ |
| Compliant with all product types | ✅ |
| Consistent climate across lines | ✅ |
Recommendation
Use general-purpose MEK only if adhesion and performance are acceptable across all lines. If not, consider two inks optimised for your main substrates.