Doneck – Compostable solvent-based inks for packaging
LUXEMBOURG • In addition to the already compostable water-based ink series, the company has now also had the compostability of major products from the solvent-based inks portfolio tested and certified. The newly certified printing ink series (DIN EN 13432) are ideally suited to the printing of food packaging and tissue products made of paper and film.
The Doneck Network has compostable inks for the following areas of application:
- Solvent-based ink series
Developed for the printing of carrier bags and packaging, the Euro-Bag ink series offers outstanding gloss, good wrinkle recovery and abrasion resistance. The high pigment concentration at low viscosity enables perfect printing of both areas and fine lettering using flexo printing. The Euro-Film ink series has been developed for the printing of film packaging. Doneck’s portfolio includes the inks from the Euro-Max series for compostable heavy-duty sacks for the packaging of foodstuffs and fertilisers, or for agricultural sacks. The inks are also suitable for the printing of film bags for detergents. High UV light stability and resistance to weathering is a must for this ink series. With the highly pigmented ink concentrates from the “Euro-Base” series numerous inks can be manufactured for different applications through the addition of blends.
- Water-based ink series
Doneck has developed the “Euro-Food” ink series for food packaging made of paper, for example bags and wrapping paper. It meets the requirements of the EN 646 standard for bleeding fastness and it is odourless with low migration. The printing inks from the “Euro-Nap” series are ideally suited for tissue products such as serviettes, airlaids, paper handkerchiefs, toilet paper and tablecloths. The printing ink is odourless and ensures a good printing result on absorbent substrates. The “Eco-Film”, developed for the film processing industry, has a good freeze-fastness and is also suitable for hygienic packaging, e.g. for nappies and sanitary towels. The ink series mentioned have good machine running properties and result in a high gloss on printed products.
“OK Compost” certification
The printing ink series mentioned are all certified according to the label “OK Compost Industrial” for industrial composting plants (composting at 55 °C to 60 °C) and “OK Compost Home” for household compost (lower temperature). Compostability is checked in two steps according to the EN standard 13432: First of all, the Organic Waste Systems Institute carries out a heavy metals analysis. After that an ecotoxicity test is carried out. Following the successful tests and protocols, the certification is carried out by the TÜV Austria.
Definition of composting
In order for packaging to be compostable, the additives such as adhesives and printing inks must not interfere with the biological degradability of the printed substrate and must not have any negative effects on plant growth. This ensures that the compost can be re-used, for example in agriculture or in garden markets.