LED UV Flexo Low Migration inks developped by Siegwerk for printing food packaging & labels in narrow web. High reactivity and HIgh adhesion levels on wide variety of substrates.

1. SICURA NUTRIFLEX LEDTec
September 2016
THE breakthrough in the UV LED technology for Narrow Web

2. Agenda
2

3. Trends in UV curing systems
3
 Rising cost of energy
• Development of more energy-efficient UV dryers
 Increasing awareness of the issue related to the environment & safety
• Ozone free systems, UV lamps with higher life time
 Continuous improvement of quality of printed job:
• Thin plastic substrates printing (registration),
• Consistency vs time of emitted UV energy (food packaging)
• In line varnishing (mat/gloss, drip off)
• In line post printing operations (folding, dying, gluing,…)

4. UV LED (Light Emitting Diodes) : Principles & Features
4
LEDs are based semiconductor material emitting a light spectrum when submitted to an electric
current.
Unlike conventional UV mercury (tubes) lamps, UV dryers consist of many LED diodes arranged in
several lines and across the width
This principle consumes less energy and generates very little heat (IR).
Low temperature interesting for printing thin plastic substrates (eg Shrinkable sleeves, IML)
LED emission UV spectrum is monochromatic
(generally 385 or 395 nm) in contrast to the conventional
UV Mercury lamps : no UV-B and UV-C
LED does not emit the in of short wavelengths: no
ozone formation (no need for extraction)
Diodes have a very high life time.
No waiting time to ignition (immediately operational after
ignition).
- Standard UV Lamp
- UV LED
Relativeintensity%
Wavelength (nm)

5. Standard UV / LED : Elements of comparison
5
Standard UV LED UV
Lamp Type Mercury Diodes
Mercury content Yes No
Ozone formation Yes No
Heat generation 35-45° C Room T° + 5° C
Typical shelf life 1000-2000 h > 20 000h
Installation costs Standard Higher *
Energy consumption Standard Lower *
Inks cost Standard Higher *

6. UV LED advantages
6
 No Mercury filled bulbs
 No IR emissions (thermo sensitive substrates)
 Potential energy saving
 Consistency of UV power over time
 High life time (>/20000h vs 1000-2000h for standard UV)
 Compact
 Easy to handle
 No exhaust system required (no ozone production)
 Full power available immediately after switching on
 No shutter required on the presses

7. Printing with SICURA NUTRIFLEX LEDTec : Better & Safer
7
… With outstanding performances
 High reactivity inks UV flexo inks
 High adhesion levels
 High image definition : low dot gain, sharp dots,
clean micro texts.
 High colour strength
 Outstanding flow
• Food applications: SICURA NUTRIFLEX LEDTec
SICURA NUTRIFLEX LED Tec is a low-migration UV Flexo series especially
developed for food packaging applications and other sensible applications (cosmetics,
pharmaceuticals) with no direct contact between the printed image and the content of the
packaging.
A State of the art formulation…
Low Migration Ink, BPA free series, compliant with all relevant regulations
Developed and manufactured following a strict and dedicated process

8. SICURA NUTRIFLEX LED Tec – Compliance that convinces
8
Regulatory Compliance
EuPIA
Guidelines
Regulation (EC)
N° 2023/2006
Good
Manufacturing
Practices
SWISS
ordinance
817.023.21²
Plastics
Regulation
(EU)
N° 10/2011
Nestlé
Guidance Note
on Packaging
Inks (August 2016)
Regulation (EC)
N° 1935/2004¹
French Law
2012-1442 of
24th Dec. 2012
1 Regulatory Compliance

9.  French Law 2012-1442 (24/12/2012)
Printing inks & varnishes formulated with raw materials containing Bisphenol A (BPA) applied to the
outside surface of a food packaging are affected by the application of the French law on BPA.
By consequence, for all products used in applications without functional barrier, all RM based on BPA
have to be substituted.
 Nestlé Guidance Note on Packaging Inks (Version: August 2016)
Ban of BPA based raw material status : French market & Nestlé applications
9
• Conclusion:
• For the French packaging market or for Nestlé applications, food packaging without any functional
barrier, should be printed with UV inks free of raw materials based on BPA.
‘’General exclusions for ink formulations:
This Note has negative lists of components. The components below are allowed by the Swiss
Ordinance, but are forbidden for Nestlé ink formulations due to quality and safety concerns…
… Bisphenol A (BPA) and materials manufactured from or incorporating BPA in reacted form as
part of the chemical structure must not be used.’’

10. SICURA NUTRIFLEX LEDTec– Technology that convinces
10
2 State of the art composition:
• Use of high molecular weight & high functionality monomers
• Use High molecular weight Photoinitiators, supported with toxicological data
• Use of High purities oligomers & monomers (Tin free, nonylphenol free,…)
• Calibration of MW distribution : minimisation of content of low MW fractions
P-P
P. + .Phν .P///////////////P.P///////////////P
hν
MW
%

11. SICURA NUTRIFLEX LEDTec – Technology that convinces
11
Excellent
printability
High curing
speed
Outstanding
adhesion
Full range of
complementary
bases
3 Printability
Excellent ink
flow

12. SICURA NUTRIFLEX LEDTec– A process development that convinces
12
Developed and manufactured following a strict and dedicated process4
Manufactured in a our production
facility of Aarberg (Switzerland)
dedicated to UV inks & varnishes for
packaging printing
Good Manufacturing Practices
(GMP) in place*
ISO 9001:2008 and
ISO 14001:2004 certified
Experienced Management and Staff
Checklist for Approval
 Exclusion criteria
(e.g., carcinogenics,
mutagenics,
reprotoxics, toxics)
 Defined purity
standards and full
understanding on
existing impurities
 Compliance with
chemical registration
 Full understanding of
chemical
composition for food
packaging
Our raw material introduction process excludes unwanted substances
Sample
request
Lab tests
Global
HSE
approval
 A risk assessment of supplied raw
materials is performed to
determine potential non
consistencies of raw materials with
SIEGWERK‘s specifications
 Organoleptic properties checked
thanks to two sensory panels, on
routine basis but also during the
product development
 Checking of cross-contamination
risks during production through
appropriate protocol of analysis
New raw
material
New raw
material
Business
approval
Strongly supported by a skilled and well equipped
analytical lab
Manufactured in a Dedicated Production Site

13. Sicura Nutriflex LEDTec - Gallery
High image definition
High curing speed
High image definition
High curing speed
Excellent Adhesion
High flexibility
Excellent Adhesion
High flexibility
Excellent Adhesion
High image definition
Excellent Adhesion
High image definition
A versatile product than can be used on all many different applications
13

14. Thanks for your attention!
Contact person:
Marc Larvor
Head of Technical Marketing
Business Unit Sheetfed/Narrow Web
Mobile: +33 (0)607325351
Mail: marc.larvor@siegwerk.com
www.siegwerk.com