LEIPA patents highly modern barrier coating method

Why a functional barrier must work both ways - and LEIPAbarrier can do more than just MOSH/MOAH

Whether it is the food, pharmaceutical or packaging industry: All areas are presenting higher and higher requirements for packaging and functional barriers - be it market-driven or due to statutory provisions. In daily reporting, the topic of "mineral oil barriers" - protection against the migration of MOSH/MOAH in the direction of the packaged goods - is currently developing as one of the hottest industry topics. However, as correct and important this discussion is, it disregards the fact that a really good functional barrier must be able to do more: prevent the penetration of unwanted substances from the outside in, and stop the desired substances, properties and aromas from escaping. Good barriers do both. Optimal barriers are also as thinly layered as possible, easy to process and contribute positively to environmental preservation or relief. The barrier solutions, known under the term EVOH, successfully resolve this apparent contradiction. A barrier layer that is as thin as possible prevents the penetration of oxygen, liquids and other undesired external influences. At the same time, EVOH ensures that aromas, protective gases and taste remain inside the packaging or packaged goods. This also increases the shelf life of packaged food items. As an EVOH barrier solution, LEIPAbarrier has these properties, but goes one step further: The innovative co-extruded layer was designed by LEIPA FlexPack as an excellent barrier against so-called mineral oil containing substances (MOSH/MOAH), with additional good - and even excellent in the LEIPAbarrier Plus variant - O2, H2O and aroma barriers. The LEIPA innovation has especially thin layers, and is environmentally friendly and efficient. The barrier is directly applied onto the support layer in an extrusion laminating process, with the lowest possible number of layers and weight - for the best possible preservation of resources with the highest possible product safety.

In comparison to the solutions common on the market currently, LEIPAbarrier has a noticeable advantage because of the patent-registered technique - and also the companies that are already implementing it in practice: Even today, LEIPAbarrier is being used in primary packaging for food (e.g. baking mixtures, meat, sausage, cheese, fish) and technical applications. It is also free from solvents, cleavage products, halogens and aromas, and can be used in some areas of application as an alternative to PVDC and aluminium solutions (alternatively: increases the barrier portfolio in addition to the known PVDC and aluminium packaging solutions). What is especially attractive is the opportunity to combine LEIPAbarrier with different substrates, e.g. paper.   The high-performance barrier increases shelf life, and reduces food waste and plastic usage. Of course, LEIPAbarrier meets the planned storage time limits set by the Federal Ministry of Food and Agriculture (draft 7/2014) and is harmless within the meaning of EU food law. A special plus is the processability: It can be used as a flow pack, skin packaging and in MAP (modified atmosphere packaging), shows excellent sealing properties with peelable and firmly sealing combination solutions, and can be processed on existing deep drawing and tubular bag systems. The materials can be refined with all common printing processes (flexo, intaglio and digital printing) and colour systems (solvent-based, UV and water-based). LEIPAbarrier enables the use of modern packaging and designs, with reduced material use, improved barrier properties and relief for the environment. LEIPA FlexPack is a business unit belonging to LEIPA Georg Leinfelder GmbH: www.leipa.de/flexpack