PREFORM PRODUCTION 19 PETplanet Insider Vol. 23 almost one day per year is saved in hours spent administering discolouration claims; clients develop and deliver to market new products with rPET easier and faster, as less time is spent optimising production and adjusting quality; Bottles on the shelf appear visually much more consistent, with less colour variation. Future challenges Doloop is aiming to become carbon-neutral. The company is achieving this by offsetting the CO2 emissions generated during production with renewable energy projects. It is also making all of its products recyclable or compostable. The automated quality inspection is now moving to the second stage of development to tackle another quality issue: black specs, which are small, dark fractions or particles found in blown bottles, resulting from increased use of recycled materials. They do not harm product itself but the appearance is affected when the bottle is blown. Doloop and Sprana plan to upgrade the existing base of the PET preform inspection system and adapt to detect black specs during in-line production. In 2021, Doloop produced almost 1.5 billion PET preforms and 35 million PET bottles. The company has expanded its range of sustainable packaging solutions and started producing PET rigid film in late 2021. Its customers include well-known brand-owners, international and local companies. 90% of the company’s production is exported to more than 20 countries around the world, including Germany, Norway, Finland and Sweden. www.doloop.com Inline quality control and PET preforms inspection technology
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