{"id":53356,"date":"2021-12-08T16:18:47","date_gmt":"2021-12-08T15:18:47","guid":{"rendered":"https:\/\/packaging-journal.de\/?p=53356"},"modified":"2021-12-08T16:18:47","modified_gmt":"2021-12-08T15:18:47","slug":"recycled-printcyc-printer-inks","status":"publish","type":"post","link":"https:\/\/packaging-journal.de\/en\/rezyklate-printcyc-druckerfarben\/","title":{"rendered":"Recyclates: PrintCYC investigates the influence of printing inks"},"content":{"rendered":"
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The PrintCYC initiative is investigating the influence of printing inks on the recyclability of plastic films, the recycling process, the quality of the recycled pellets and their processability. The initiative is currently focussing on the effects of pigments on the recycling process.<\/strong><\/p>

The initiative has discovered that, in addition to inorganic Standard organic pigments for flexographic and gravure printing are also easily recyclable<\/strong> and enable recyclates that are comparable to virgin material. This opens up a wide range of possibilities for reuse in various film and packaging applications.<\/p>

The PrintCYC consortium was founded in 2019 to the recyclability of printed polyolefin-based packaging films through evidence-based industry trials<\/strong> to promote the use of printing inks. The players in the initiative are the leading machine manufacturers Br\u00fcckner Maschinenbau, Erema, Kiefel and PackSYS Global, the printing ink manufacturer hubergroup Print Solutions<\/a> and Profol, one of the market leaders for PP cast films.<\/p>

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The influence of pigments on recyclability<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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At the beginning of this year, PrintCYC started the next project phase and investigated the influence of pigments on the recyclability of printed packaging films<\/strong>. Inorganic pigments are usually temperature-stable and should therefore be recyclable without decomposition. However, organic azo pigments, such as most standard red and yellow pigments, are more temperature-sensitive and can break down into critical components. The pigments Yellow (Pigment Yellow 17)<\/strong> and Red (Pigment Red 57:1)<\/strong> are commercially available standard pigments for flexographic and gravure printing and were therefore selected for the recycling tests.<\/p>

Both pigment types showed excellent recyclability<\/strong> and led to odourless and faultless, colour-stable PP recyclates<\/strong>. The material properties of the coloured recyclates were examined technically and analytically. After the first recycling run, PrintCYC found no significant differences in the material properties compared to virgin material. The positive results open up diverse possibilities<\/strong> reuse in various film and packaging applications.<\/p>