vor 4 Jahren

Issue 04/2019

  • Text
  • Bioplastics
  • Materials
  • Biobased
  • Products
  • Plastics
  • Biocomposites
  • Biodegradable
  • Carbon
  • Germany
  • Properties
Highlights: Blowmoulding Composites Basics: Home Composting Cover Story: Cove PHA Bottles

PRESENTS The Bioplastics

PRESENTS The Bioplastics Award will be presented during the 14 th European Bioplastics Conference December 03-04, 2019, Berlin, Germany 2019 THE FOURTEENTH ANNUAL GLOBAL AWARD FOR DEVELOPERS, MANUFACTURERS AND USERS OF BIOBASED AND/OR BIODEGRADABLE PLASTICS. Call for proposals Enter your own product, service or development, or nominate your favourite example from another organisation Please let us know until August 31 st 1. What the product, service or development is and does 2. Why you think this product, service or development should win an award 3. What your (or the proposed) company or organisation does Your entry should not exceed 500 words (approx. 1 page) and may also be supported with photographs, samples, marketing brochures and/or technical documentation (cannot be sent back). The 5 nominees must be prepared to provide a 30 second videoclip and come to Berlin on December 3 rd , 2019. An entry form can be found at supported by 42 bioplastics MAGAZINE [04/19] Vol. 14

Materials Coated paper cups made home-compostable By: Chinnawat Srirojpinyo Marketing Technical Service Manager PTT MCC Biochem Company Bangkok, Thailand Paper cups are one of the most popular single use food contact application and they are always mistreated when disposed. Most people do not know that there are polymer liners inside these cups and these cups end up in paper bins or compost sites which causes problems in waste management. PTT MCC Biochem Company Limited has introduced BioPBS, the only biobased polybutylene succinate (PBS) to the market in 2016. BioPBS is a renewably based and compostable plastic material that will also biodegrade at ambient conditions. Like LDPE, it is flexible with a heat resistance of up to 100°C (HDT B). The heat resistance is very important for storage and logistics as it can prevent products from being deformed at high temperatures during transport and storage. This uniqueness makes BioPBS the most suitable compostable polymer for coating application. Currently, BioPBS FZ79AC, the industrial compostable grade, is widely used in cup stock coating. With its balance on adhesion and melt strength, FZ79AC can run on commercial LDPE lines up to 500 m/min without any adjustment on the machine. The paper coated with FZ79AC (both 1-side and 2-side coating) is repulpable and can this be recycled to new paper (tested by Western Michigan University, Kalamazoo, USA and PTS Heidenau, Germany in Europe). Although this grade can biodegrade at ambient condition, it cannot biodegrade fast enough to meet the strict requirement of Home Compostable. Aiming to be more environmentally friendly and to meet the requirements of a circular economy, PTTMCC have been developing new home compostable grades for paper coating for hot beverages. With this new grade, BioPBS-coated paper cups can fulfil all end-of-life options. If consumers drink and dispose cups inside the stores, stores can collect and send them to compost sites or paper mills for recycle its fiber into new paper. The remaining BioPBS liners can then be sent to compost sites later. If consumers take away their cups and dispose them in regular trash bins, or – at home - these cups can biodegrade as the material is home compostable. The last option is to be sent to incineration to generate energy. This idea was submitted to NextGen Cup Challenge and PTTMCC was one of the top 12 winners from 480 participants in the Challenge. This grade has been successfully tested in commercial coating lines and cup forming lines and complies to the European food contact regulation EU 10/2011. Currently, PTTMCC are testing the disintegration and expected to be completed soon. Other than coated paper cups, BioPBS can provide home compostable solutions for flexible packaging. Home compostable flexible packaging has been introduced to market using BioPBS FD92PM as sealant layer with combination of cellulose film or paper. Biodegradation (%) 110 100 90 80 70 60 50 40 30 20 10 0 0 -10 15 30 45 60 75 90 105 120 135 150 165 Time (days) Cellulose BioPBS FZ71/FZ91 (50/50) coated on paper (20/320) Renewably sourced Virgin feedstock PAPER Paper coating / Cup forming PAPER CUP Product and Service PE Cup FZ79AC Cup Dev Grade 0 Month RECYCLE fiber into new paper 1 Month Consumer and User 2 Month 3 Month INDUSTRIAL Composting 60°C / 6 months 4 Month Biomass HOME Composting 30°C / 1 year INCINERATION LEAKAGE 5 Month Energy Open landfill 6 Month On testing process On testing process On testing process bioplastics MAGAZINE [04/19] Vol. 14 43

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