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Light Inks

What is the difference between .... Conventional offset inksIR-offset inksUV-offset inksHybrid inksLight inks. Conventional drying. IR drying. . . . . . . . UV-light photoinitiator. . . - C = C -. - C = C -. C = C -. C = C -. - C = C -. - C = C -. - C = C -. - C = C -. - C = C -. - C = C. - C = C -.

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Light Inks

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    1. Light Inks

    2. What is the difference between ... Conventional offset inks IR-offset inks UV-offset inks Hybrid inks Light inks

    3. Conventional drying

    4. IR drying

    5. UV curing

    6. Differences in composition Conventional and IR-ink Pigments Mineral oils Vegetable oils Resins Driers Additives

    7. What are the advantages of UV-curing? Very fast curing Curing is independent of the pH of the fountain solution 100 % dry solid content No evaporation of solvents Perfect stability on rollers and in inkduct Needs little energy and space Very good adhesion on a lot of different substrates Gloss of UV-varnishes is very high Chemical and heat resistant Rotatie-offset Waarom geen vellenoffset? Dit lijkt klaar en duidelijk als we het te bedrukken materiaal zien. Mobil zal hierover straks meer vertellen. In elk geval offset vermits dit een zeer goedkope, flexibele en kwalitatief hoogstaande vorm van drukken is voor kleinere oplages. Maar dan dienen we wel UV als drogingstechniek te gebruiken. Ja, waarom trouwens UV? Wat zijn de voornaamste voordelen?Rotatie-offsetWaarom geen vellenoffset? Dit lijkt klaar en duidelijk als we het te bedrukken materiaal zien. Mobil zal hierover straks meer vertellen.In elk geval offset vermits dit een zeer goedkope, flexibele en kwalitatief hoogstaande vorm van drukken is voor kleinere oplages. Maar dan dienen we wel UV als drogingstechniek te gebruiken. Ja, waarom trouwens UV? Wat zijn de voornaamste voordelen?

    8. What are the disadvantages of UV-curing? Contact with UV-products may cause skin irritation Higher price UV varnishes cannot be run in-line with conventional inks UV ink makes conventional rollers swell Eerlijkheid gebiedt ons ook enkele nadelen van UV-droging op te sommen:Eerlijkheid gebiedt ons ook enkele nadelen van UV-droging op te sommen:

    9. Disadvantages seen from viewpoint of conventional printer « I need special press with special UV rollers, with special UV drying unit, with special high priced UV inks, which need to be stored cool and I am not even able to run conventional inks on this machine when no UV varnish is needed. »

    10. Hybrid Inks Since the beginning: UV varnish only wet on dry (with spray powder being negative parameter) Years ago: waterbased varnish between conventional inks and UV varnish Still gloss back + expensive Now: hybrid inks on conventional machines + UV varnish in-line ? Good gloss + less expensive

    11. Differences in composition Conventional and IR-ink Pigments Mineral oils Vegetable oils Resins Driers Additives

    12. Roller quality UV ? EPDM CONV ? NBR Not adequate ink-rubber combination gives: Swelling or shrinking Increase or decrease in hardness Resulting in: Bad transfer of inks Difficult washing Extreme tackiness Misting

    13. Hybrid inks ... are being formulated in such a way that they behave “normal” on conventional types of rubber ? And therefore do not have the drawbacks of UV inks on the same rollers

    14. Quellprüfung Arets

    15. Future of hybrid Replacing more and more conventional inks! Reason: price going down can be used on difficult substrates can be used in-line with water & UV varnish if choice needs to be made, it will be hybrid

    16. Hybrid inks + Frame Directive 1935/2004 + recent developments on Low molecular photoinitiators Gave birth to Light series EXC37451 - 454

    17. Light Series EXC37451 - 454 All the advantages of the hybrid inks + extra securities for food packaging applications low odour low migration Supported by: Certificate of Conformity Declaration of Conformity Statement of composition Migration tests Robinson tests …

    18. Future of Light Will become the ultimate choice for food packaging as it can give more securities than conventional inks and IR inks

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