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UniCure FP — Low Migration Inks
Low-migration UV flexo inks for food packaging, built on cross-linkable polymeric photoinitiators from the EuPIA Group 1A and 1B lists.
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Overview
Low migration is not less migration
A less-migration ink keeps conventional chemistry and chooses heavier molecules; they migrate more slowly, but they still migrate. A low-migration ink uses photoinitiators that are themselves polymeric or carry acrylate groups, so that during cure they react into the polymer network and become part of the film.
UniCure FP is built on this second principle: cross-linkable polymeric photoinitiators from Groups 1A and 1B of the EuPIA suitability list, no low-molecular-weight acrylates, no Fanal pigments, no mineral oils.
Product data
| Photoinitiators | Cross-linkable polymeric, EuPIA Group 1A / 1B |
|---|---|
| Excluded | Low-molecular-weight acrylates, Fanal pigments, mineral oils, ITX, benzophenone, TPO |
| Overall migration | Below 1 mg/dm² at recommended ink load and cure |
| Specific migration | Photoinitiators and acrylates below 10 µg/kg |
| Test protocol | Regulation (EU) 10/2011, fatty-dairy simulant, accredited laboratory |
| Applications | Dairy lidding foil, PET lidding, in-mould labels, pharmaceutical packaging |
| Companion coatings | LMC 83RC heat-sealable low-migration OPV, ASC 88RC anti-static OPV |
Compliance and standards
- Regulation (EC) 1935/2004
- Regulation (EU) 10/2011
- EuPIA Charter
- Swiss Ordinance
- Nestlé Guidance
- TPO free
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How a cured ink can still migrate
Three routes exist. Permeation through the substrate: relevant on plastics and thin paper, negligible on foil. Set-off: the printed outer surface touches the inner, food-contact surface of the next sheet or the next lap of the reel, transferring residues directly. This is the dominant route for paper and board, and one that a barrier substrate does not stop. Gas-phase transfer of volatile components through the headspace.
What migrates is whatever is small, mobile and unreacted: residual monomers, photoinitiator molecules that were never activated, and photoinitiator fragments produced during cure. Benzophenone, ITX and their photolysis products are the historical offenders.
Chemistry alone does not make a compliant pack. Full cure at the specified dose, correct ink load, a suitable substrate and a validated set-off situation are all required.
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Independent qualification
We have completed independent migration testing of the low-migration LED flexo system on two of the most demanding food-packaging formats: aluminium and PET lidding for yoghurt and dessert cups, and in-mould labels fused into PP containers.
Testing by an accredited laboratory to Regulation (EU) 10/2011 protocols, using the fatty-dairy simulant, returned overall migration below 1 mg/dm² and specific migration of photoinitiators and acrylates below 10 µg/kg at the recommended ink load and cure.
Downloads
Technical documents
Download the Technical Data Sheet, Safety Data Sheet and Regulatory Summary for every product in this range. Technical data sheets are provided as standard for all Uniform Industries printing inks and coatings.
| Product | Description | Documents |
|---|---|---|
| UniCure FP | Low-migration UV flexo inks for food packaging | TDSSDSRegulatory |
TDS = Technical Data Sheet. SDS = Safety Data Sheet (MSDS) according to Regulation (EC) 1907/2006 Annex II and UN GHS. The Regulatory Summary lists the compliance status of each product. Click a document to read it online in the viewer; each document can also be downloaded as PDF (up to 5 downloads per location). Product catalogues are available to read online. For a controlled copy, a declaration of compliance for your specific application, or documents for a product not listed here, write to sales@ufindustries.com.
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Science Technology Innovation & Application. Printing inks and coatings for packaging, label and graphic printing since 2006.
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