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Ink as a Substrate in Flexible Packaging Laminations

Ink as a Substrate in Flexible Packaging Laminations. IOPP Technical Bag Committee Winter 2013 Meeting. Presented by: Bruce Foster Mica Corporation. Better Understand Effects of:. Ink “Type” (polymer base) Ink Color. Objective. On Adhesion in Extrusion Laminations.

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Ink as a Substrate in Flexible Packaging Laminations

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  1. Ink as a Substrate in Flexible Packaging Laminations IOPP Technical Bag Committee Winter 2013 Meeting Presented by: Bruce Foster Mica Corporation

  2. Better Understand Effects of: • Ink “Type” (polymer base) • Ink Color Objective On Adhesion in Extrusion Laminations (with PRIMERS, of course!)

  3. 12-micron polyester film – 1-side factory treated Inks – solvent-based, toluene-free • 3 chemistries – • Vinyl-modified polyurethane • Modified-polyamide • Modified-polyurethane Materials

  4. 12-micron polyester film – 1-side factory treated Inks – 3 chemistries Primers – Water-Based • 2 chemistries – • Polyethylene-imine • Polyurethane Materials

  5. Lab Experiments – Set I • Ink draw-downs on polyester film: • Different types & colors • Prime over “printed” samples: • Polyethylene-imine based extrusion primer Approach • Extrusion-coat on lab pilot line: • High-temperature polyethylene

  6. Lab Experiments – Set I 40-micron polyethylene @ high temperature Approach primer ink 12-micron polyester film (corona-treated)

  7. Ink lift-off 12-micron polyester film (corona-treated)

  8. All Samples - Ink lift-off

  9. Ink Splits Ink lift-off

  10. Lab Experiments – Set I Modified Polyamide Inks had best adhesion to polyester film Polyethylene-imine primer works with all inks tested Learnings 3. White inks had lowest adhesion to films

  11. ???

  12. Lab Experiments – Set II • Pre-prime polyester film • Both imine and urethane primers • Print over primed samples: • Vinyl-modified polyurethane inks Approach 3. Prime over printed samples: • Both imine and urethane primers 4. Extrusion-coat on lab pilot line: • High-temperature polyethylene

  13. Lab Experiments – Set II 40-micron polyethylene @ high temperature Approach primer Vinyl-modified polyurethane inks primer 12-micron polyester film (corona-treated)

  14. Results – Set IIa Results

  15. Results – Set IIb Results

  16. Lab Experiments – Set II Pre-priming works for vinyl-modifed polyurethane inks! Both primer chemistries gave mostly good results Learnings 3. Polyethylene-imine pre-primer was best for white ink adhesion

  17. Lab Experiments – Set I Modified Polyamide Inks had best adhesion to polyester film Learnings Polyethylene-imine primer works with all inks tested 3. White inks had lowest adhesion to films

  18. P.T. Colorpak Indonesia, Tbk. Jonida Gjika – Lab Chemist Mica Corporation Thanks TAPPI PLACE

  19. Thanks, for your attention! Questions? Bruce Fosterbfoster@mica-corp.com

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