1. 1 Energy curable inks and varnishes – A current update. Ron McDonald Zeller+Gmelin Printing Inks Food Packaging Printing

2. 2 IST BPiF Seminar 2015  Company profile  The printer´s choice  UV Basics – The UV curing spectrum  Market development  Inks and Varnishes  Outlook

3. 3  UK plant based in West Thurrock, Essex  Until 2010 known as Intercolor Ltd  Part of Zeller+Gmelin Group since 1986  Re-branded as Zeller+Gmelin UK Ltd January 1 st, 2010  UK, Ireland, Exports  German based Printing Ink Manufacturer  Specialist in energy curing technologies  100% privately owned  150 years in business (2016) Company profile

4. 4 The printer´s choice Curing Technologies Investments Low Migration Brand owner requirements Printing Technologies Legal impacts Energy consumption Consumables

5. 55 UV – „Basics“ UV-Basics The UV spectrum i infra-red X-ray radio waves UV cosmic radiation 400 nm200 nm UVC 280 nm320 nm UVBUVA 760 nm 400 nm IR: 3-10 µm

6. 6 Energy curable inks and varnishes General trends Standard UV inks → Low Migration LED-UV big hype pushed by stakeholders for last 4 – 5 years Reduction of energy consumption Market development

7. 7 Standard UV Inks and Varnishes Well known standard Low Migration inks / varnishes available Continuous development of UV-units to reduce energy consumption Continuous development of inks and varnishes Focus of the ink industry in the past years:  improvement of Low Migration inks (performance, odour, cost) Focus of Zeller+Gmelin:  Development of the next generation standard LM inks  New concepts of formulation with outstanding sensory properties, high gloss and further reduced migration potential  New development based on patented UV-Bulb Technologies (UV-C Technology) Inks and Varnishes

8. 8 Standard UV Inks and varnishes New concept of formulationUV-C Technology No or very limited PI´s needed Very high gloss Almost no specific odour Under development  UV-letterpress  UV-Flexo max. 100 m/min Under development  UV-Flexo up to 250 m/min Preferred application:  Food packaging Preferred application:  Food packaging First printed sample labels available on Label Expo Patented bulb technology Retrofitting needed Nitrogen inerting needed Inks and Varnishes

9. 9 Printing Sample New concept of formulation prototype inks Inks and Varnishes

10. 10 LE-UV Iron doped mercury bulbs → used for commercial printing applications → sheet fed presses → max. 2 UV-units perfecting unit and delivery → limited suitability in terms of substrates → limited availability of inks and varnishes No practical application * in narrow web but widely spread in commercial printing applications on sheet fed presses * Iron or Gallium doped lamps have been used in narrow web for special application (curing of thick layers opaque white) Inks and Varnishes

11. 11 LED-UV  Biggest hype since at least 4 – 5 years  Very good market development on sheet fed offset presses for commercial print applications  Max. 2 units, perfecting unit and delivery  Flexo still a limited number of presses  First offset inks developed together with IST for IPEX 2010 press speed Müller-Martini 170 m/min. max.  Limited substrates (synthetics still difficult)  Limited availability of Inks  Limited availability of varnishes (tend to yellowing) Inks and Varnishes

12. 12 LED Printing Sample (Offset) Inks and Varnishes

13. 13 Spectrum UVH lamp, type Hg vs. UV LED Inks and Varnishes

14. 14 Electron beam curing  Special application  Only suitable for web offset presses with straight web path  No interdeck curing possible (space/investment)  Nitrogen inerting necessary  Preferred application: Food packaging Inks and Varnishes

15. 15 Overview of Technologies Cost of Inks and Varnishes Availability of inks and varnishes Food packaging InertingOffset technology Flexo technology Standard UV100%fullyes, Low Migration inks noyes H-UV (LE-UV)120-125 %limitedno yesno UV-C85-90 %fullyes, preferred application yes LED-UV120-125 %limitedno yes Electron beam85-90 %fullyes, preferred application yes no ** ** Except patented wet flex technology Inks and Varnishes

16. 16 → Development of standard UV curing equipment will continue Focus: Less energy consumption, equal (better) peak output Standard UV  New Low Migration inks under development to cover legal requirements  New concept of formulation under development to go beyond standard Low Migration products, odour, gloss, → UV-LED will take it´s share Sheet fed offset for commercial applications breakthrough has already been achieved. Max. 2 curing units, perfecting unit and delivery. Narrow web question of investment as a trade off against potential energy savings Outlook

17. 17 → UV-LED will take it´s share  Inks and varnishes significantly more expensive  Limited product range due to monochromatic light source  UV-varnishes tend to yellowing  Low Migration rather difficult to achieve → LE-UV Transition technology; well used in sheet fed offset, commercial applications not used in narrow web → UV-C Standard UV technology with special UV-Bulb (patented Suprasil Glass Technology) Advantage very little PI-content UV-lamps need to be retro fitted with UV-C Bulbs and nitrogen inerting Outlook

18. 18 → Electron beam curing  Preferable for food packaging materials  In theory less migration potential  Nitrogen inerting necessary  No interdeck curing possible → limited application  Preferable for UV-web offset presses with straight web path Outlook

19. 19 For detailed information visit us on Hall 11 / Stand 11A47