Welcome to Imerys Performance Minerals

Mineral Oil Barrier

Mineral Oil Barrier

As the paper-based packaging industry in Europe prepares itself for legislation governing issues involving mineral oil migration to food in direct contact with paper or board-based packaging, Imerys offers a unique, patent-pending solution to the issue.

Background

Research at Swiss-government-run Food Safety Laboratory of the Canton of Zurich detected measurable levels of components from mineral oil escaping from the fiber structure into the packed food. Some of these components – Mineral Oil Saturated Hydrocarbons (MOSH) and Mineral Oil Aromatic Hydrocarbons (MOAH) – are considered carcinogenic. And even with the use of an inner protective bag (PE or wax-based), levels of Mineral Oil components migrating into foodstuffs from board remain beyond food safety limits.

Our solution

Our solution consists of back side coating of the packaging substrate with Imerys coating formulation. Our coating significantly reduces the vapor phase migration of saturated and aromatic mineral oils.
Minerals like mica, talc and kaolin – are all recognized as pigments that can provide barrier properties when used in mineral oil barrier coatings. However, developing optimized formulation for this application calls for knowledge on how unique pigment shapes and sizes allow the development of functional structures. The ability to blend the positive properties of various minerals is also key to create real synergies in the coating formulation. This expertise is the reason why Imerys coating solution provides a unique solution by reducing oil vapor transmission Rate by 99% – thus providing an effective solution to the issue of mineral oil migration.

This is typically a domain where flexographic or rotogravure printer applied coatings can provide a cost-effective solution to the industry.

Features

  • Can be used for board based on virgin and recycled fibers
  • Glueable with both hot melt and cold set adhesives
  • Repulpable
  • Heat sealable if required
  • FDA/BfR compliant for food contact
  • Can be applied using conventional coating techniques (curtain, blade, rod, size press), or via flexo and rotogravure

For more information, please contact formulations@imerys.com

We offer a full range of bespoke formulation and technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us. We will be only too happy to help

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Paper & Board