ink as a substrate in flexible packaging laminations flexible packaging laminations presented by:...
TRANSCRIPT
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Ink as a SubstrateInk as a Substrateinin
Flexible Packaging LaminationsFlexible Packaging Laminations
Presented by:Presented by:
Bruce FosterBruce Foster
Mica Mica CorporationCorporation
IOPP Technical Bag CommitteeIOPP Technical Bag CommitteeWinter 2013 MeetingWinter 2013 Meeting
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Better Understand Effects of:Better Understand Effects of:Ink “Type” (polymer base)Ink “Type” (polymer base)
Ink ColorInk Color
On Adhesion in On Adhesion in Extrusion LaminationsExtrusion Laminations
(with (with PRIMERSPRIMERS, of course!), of course!)
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12-micron polyester film – 1-side 12-micron polyester film – 1-side factory treatedfactory treated
Inks – solvent-based, toluene-Inks – solvent-based, toluene-freefree
3 chemistries – 3 chemistries –
Vinyl-modified Vinyl-modified polyurethanepolyurethane
Modified-polyamideModified-polyamide
Modified-polyurethaneModified-polyurethane
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12-micron polyester film – 1-side 12-micron polyester film – 1-side factory treatedfactory treated
Inks – 3 chemistries Inks – 3 chemistries
Primers – Water-BasedPrimers – Water-Based
2 chemistries – 2 chemistries –
Polyethylene-iminePolyethylene-imine
PolyurethanePolyurethane
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Lab Experiments – Set ILab Experiments – Set I1.1. Ink draw-downs on polyester Ink draw-downs on polyester
film:film:
Different types & colorsDifferent types & colors2.2. Prime over “printed” samples:Prime over “printed” samples:
Polyethylene-imine based Polyethylene-imine based extrusion primerextrusion primer
3.3. Extrusion-coat on lab pilot Extrusion-coat on lab pilot line:line:
High-temperature High-temperature polyethylenepolyethylene
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12-micron polyester film (corona-treated)ink
40-micron polyethylene @ high temperature primer
Lab Experiments – Set ILab Experiments – Set I
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Bond0.04 white 0.04 black 0.04 white over black 0.08 white 0.08 black 0.08 white over black0
10
20
30
40
50
60
70
80
90
Bon
d, g
/25m
m
Primer dry gsm, ink color
Polyethylene-Imime Primerover Modified Polyurethane Inks
12-micron polyester film (corona-treated)Ink lift-off
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Polyethylene-imine Primer over Vinyl-Modifed Polyurethane Inks
0
50
100
150
200
250
0.04 0.04 0.04 0.08 0.08 0.08
Primer gsm / Ink Color
Bo
nd
, g/2
5mm
All Samples - Ink lift-off
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Polyethylene-imine Primerover Modified Polyamide Inks
0
100
200
300
400
500
600
700
800
900
white
white +
blu
e
white+b
lue+
mag
enta
white
white +
blu
e
white+b
lue+
mag
enta
0.04 0.04 0.04 0.08 0.08 0.08
Primer gsm / Ink Color
Bo
nd
, g/2
5mm
Ink lift-off
Ink Splits
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Lab Experiments – Set ILab Experiments – Set I1.1. Modified Polyamide Inks had Modified Polyamide Inks had
best adhesion to polyester best adhesion to polyester filmfilm
2.2. Polyethylene-imine primer Polyethylene-imine primer works with all inks testedworks with all inks tested
3. White inks had lowest 3. White inks had lowest adhesion to filmsadhesion to films
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Lab Experiments – Set IILab Experiments – Set II1.1. Pre-prime polyester filmPre-prime polyester film
Both imine and urethane Both imine and urethane primersprimers
2.2. Print over primed samples:Print over primed samples: Vinyl-modified polyurethane Vinyl-modified polyurethane
inksinks
4. Extrusion-coat on lab pilot line:4. Extrusion-coat on lab pilot line: High-temperature High-temperature
polyethylenepolyethylene
3. Prime over printed samples:3. Prime over printed samples: Both imine and urethane Both imine and urethane
primersprimers
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12-micron polyester film (corona-treated)
Vinyl-modified polyurethane inks
40-micron polyethylene @ high temperature primer
Lab Experiments – Set IILab Experiments – Set II
primer
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Results – Set IIaResults – Set IIa
ImineImine WhiteWhite ImineImine >500>500 InseparableInseparable
ImineImine BlueBlue ImineImine ~400~400 Film TearFilm Tear
ImineImine White White on blueon blue
ImineImine 9393 Ink lift-offInk lift-off
ImineImine WhiteWhite UrethaneUrethane ~400~400 Film TearFilm Tear
ImineImine BlueBlue UrethaneUrethane >500>500 InseparableInseparable
ImineImine White White on blueon blue
UrethaneUrethane >500>500 InseparableInseparable
Pre-Pre-PrimerPrimer
InkInkColorColor
Post-Post-PrimerPrimer
Bonds,Bonds,g/25mmg/25mm
Failure ModeFailure Mode
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Results – Set IIbResults – Set IIb
UrethaneUrethane WhiteWhite ImineImine ~200~200 Ink lift-offInk lift-off
UrethaneUrethane BlueBlue ImineImine >500>500 InseparableInseparable
UrethaneUrethane White White on blueon blue
ImineImine >500>500 InseparableInseparable
UrethaneUrethane WhiteWhite UrethaneUrethane ~170~170 Ink lift-offInk lift-off
UrethaneUrethane BlueBlue UrethaneUrethane >500>500 InseparableInseparable
UrethaneUrethane White White on blueon blue
UrethaneUrethane >500>500 InseparableInseparable
Pre-PrimerPre-Primer InkInkColorColor
Post-Post-PrimerPrimer
Bonds,Bonds,g/25mmg/25mm
Failure ModeFailure Mode
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Lab Experiments – Set IILab Experiments – Set II1.1. Pre-priming works for vinyl-Pre-priming works for vinyl-
modifed polyurethane inks! modifed polyurethane inks!
2.2. Both primer chemistries gave Both primer chemistries gave mostly good resultsmostly good results
3. Polyethylene-imine pre-primer 3. Polyethylene-imine pre-primer was best for white ink was best for white ink adhesionadhesion
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Lab Experiments – Set ILab Experiments – Set I
1.1. Modified Polyamide Inks had Modified Polyamide Inks had best adhesion to polyester best adhesion to polyester filmfilm
2.2. Polyethylene-imine primer Polyethylene-imine primer works with all inks testedworks with all inks tested
3. White inks had lowest 3. White inks had lowest adhesion to filmsadhesion to films
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P.T. Colorpak Indonesia, Tbk.P.T. Colorpak Indonesia, Tbk.
Jonida Gjika – Lab ChemistJonida Gjika – Lab Chemist
Mica CorporationMica Corporation
TAPPI PLACETAPPI PLACE
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Bruce FosterBruce [email protected]@mica-corp.com
Thanks, for your Thanks, for your attention!attention!