1) Past UV inks caused millions of euros in issues due to substance migration into food. Components like isopropylthioxanthon, benzophenone, and 4-methylbenzophenone could transfer invisibly or through migration. 2) Low molecular weight components in UV inks, like photoinitiators and reactive diluents, pose a high risk of migration if the ink is not fully cured. Ensuring full curing is difficult for printers to control and verify. 3) A new UV ink system called NewV pack MGA uses in-house developed, high purity acrylates that are high molecular weight and functional to prevent migration even if curing is inadequate

1. UV low migration inks
aibo-fce Desenzano 26.06.2014,
Thomas Glaser - hubergroup

2. Problems in the past
2004 2005 2006 2009 2010
4 Mio € 150 Mio € ? Mio €
Sensory ITX Photoinitators 4MBP Mineraloil
....Isopropylthioxanthon (ITX)
....Benzophenone
....4-Methylbenzophenone (MBP)
=> UV the devil in packaging ?

3. Transfer of substances
Invisible set-off
(ITX)
Through Migration
(4-MBP)
Transfer via the gas phase
(Mineral oil)

4. Binders*
Oligomers**
Oils / Thinners*
Monomers**
Driers*
Phototinitiators**
Additives*+** Pigments*+**
Composition - Low Migration offset ink
* Std. Conventional
** UV curing

5. -> main problem are the low molecular weight
components in the ink / coating
Low molecular weight means high mobility
 high risk of migration
Critical sources – UV Low Migration inks/varnishes
• Photoinitiators
• Reactive diluents
• Additives
• Residuals, impurities from the synthesis

6. UV offset ink UV flexo coating
UV compositions

7. 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 25.0 26.0 27.0 28.0 29.0 min
0.00
0.25
0.50
0.75
1.00
1.25
1.50
1.75
2.00
uV(x100,000)
Chromatogram
UV low migration
good curing
UV low migration
bad curing
Blank boardInternal standard
Migration analysis of UV NON-MGA « LM» ink
–> Influence of UV curing
Press - Critical sources – Printing «UV Curing»

8. Problem: how can the printer control ?
Main question: «Print cured or not cured ?»
Press - Critical sources – Printing «UV Curing»

9. Dose, intensity ... Accurancy ???
Cure testing ....
Press - Critical sources – Printing «UV Curing»

10. Odour/taint test
Migration test
Quality Control of food packagings
... No «quick test» available

11. 1. Evaluated Components
2. No confusion of raw materials
3. Purity of raw materials
4. No risk of contamination in Production
5. Quality control
6. Traceability
7. Long experience
8. Advice and education
9. Inhouse Analysis
10. Guarantee










NewV pack MGA® quality concept
Solution for safe food packaging

12. NewV pack MGA ink / coating composition
Inhouse development and synthesis of
UV acrylates for low migration systems with:
• High molecular weight
• High funtionality
• Highest purity
 Design and production of specific,
tailor made LM molecules
 Control from the “beginning till the end”
• synthesis/production
• final formulation

13. NewV pack MGA®
Special properties:
NewV pack MGA® inks are designed for primary food
packaging, taking into account relevant requirements
like the Regulation (EC) No. 1935/2004 and the Swiss
ordinance for consumer goods (SR 817.023.21)
NewV pack MGA® inks are low migration i.e. the cured ink film
contain only substances that do not migrate or that are
evaluated for food contact
NewV pack MGA® inks are showing excellent results of
organoleptic assessment of prints (low odour, low taste)

14. Low migration property is already achieved
– in conditions of inadequate UV curing of the inks
=> No influence to migration results by the ageing
of the curing equipment
NewV pack MGA®
670
60
42
385
5
10
1
10
100
1000
LM 1 LM 2 LM 3 LM 4 NewV pack
MGA cured
NewV pack
MGA uncured
Limit
ppb
UV reactive diluents “LM inks”

15. NewV pack MGA® – MORE SAFETY FOR YOU
We guarantee that from the cured ink layer of packaging
produced according to Good Manufacturing Practices
(GMP) with NewV pack MGA® inks, there will be no
transfer of substances to the packed food in excess of
applicable limits.
The inks are formulated using limited amounts of
substances with specific migration limits, so that the limits
cannot be exceeded by mathematical calculation even
under worst case conditions.
The migration of substances which are not evaluated
toxicologically will be below the detection limit of 0,01 mg/kg
foodstuff (10 ppb) set by the EuPIA Guideline as well as by
Swiss Ordinance SR 817.023.21. For the sum of all
evaluated substances, the overall migration limit of 10
mg/dm² will be met.
NewV pack MGA®

16. Thomas Glaser Stehlin+Hostag CH-Lachen Thomas.Glaser@Stehlinhostag.ch www.futurepack.de
NewV pack MGA –
UV low migration inks