{"id":32768,"date":"2020-04-01T10:25:38","date_gmt":"2020-04-01T08:25:38","guid":{"rendered":"https:\/\/packaging-journal.de\/?p=32768"},"modified":"2020-08-11T13:59:29","modified_gmt":"2020-08-11T11:59:29","slug":"less-odour-in-plastic-recyclates","status":"publish","type":"post","link":"https:\/\/packaging-journal.de\/en\/weniger-stoergeruch-in-kunststoff-rezyklaten\/","title":{"rendered":"Avoid odours in plastic recyclates"},"content":{"rendered":"

If plastic recyclates from packaging waste are to be used to manufacture new products, they must fulfil high sensory requirements. A study by the Fraunhofer IVV now shows solutions for optimising the odour of plastic recyclates.<\/p>\n

Often show Plastic recyclates Interfering odours<\/strong> some of which have not yet been identified. The Fraunhofer Institute for Process Engineering and Packaging IVV<\/strong> has analysed the sensory properties of post-consumer shopping bags from Low Density Polyethylene (LDPE)<\/strong> from different collection systems were analysed. More than 60 odour-active substances<\/strong> were identified using combined chemo-analytical methods. They provide Tips for a targeted odour avoidance strategy<\/strong>. The study, which has now been published, was carried out in cooperation with the Chair of Flavour and Odour Research at the Friedrich-Alexander University Erlangen-Nuremberg and the University of Alicante<\/strong>.<\/p>\n

In order to minimise the EU Packaging Directive<\/strong> In order to fulfil the requirements for the recycling of packaging waste, new markets for recyclates from plastic packaging must be developed. So that Recyclates from plastic packaging waste as a secondary raw material<\/strong> can be used again in high-quality products, they must not be do not have any disturbing odours<\/strong>. An unpleasant odour in plastic recyclates therefore prevents a closed packaging recycling loop. A high reutilisation rate of packaging waste is currently found primarily in recyclates of Bottles made from polyethylene terephthalate (PET)<\/strong> instead.<\/p>

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The Frauhofer IVV has analysed the sensory properties of post-consumer shopping bags made of low-density polyethylene (LDPE) from different collection systems. (Image: Eddie Jordan Photos\/shutterstock.com)<\/figcaption><\/figure>\n

Focus on LDPE packaging waste<\/h2>\n

The Analytical Sensor Technology department at the Fraunhofer IVV deals with the Characterisation and optimisation of plastics and recyclates<\/strong>. The odorous substances in HDPE waste and Recyclates from packaging for personal care products and detergents<\/strong> have already been analysed. Low density polyethylene (LDPE) is one of the most frequently used plastics. Many types of packaging, such as. Shopping bags<\/strong> are made of it. They are recycled as packaging waste via the collection systems. Based on the post-consumer LDPE shopping bags analysed in this study, it was also possible to the influence of the collection strategy on sensory impairment<\/strong> of waste in focus.<\/p>\n

Identifying odorous substances - the basic step towards prevention<\/h2>\n

Identifying the substances responsible for the odour is the basic prerequisite for Odour optimisation measures<\/strong> to be able to take action. The majority of the odorous substances identified in the study are typical metabolic products of microorganisms<\/strong>. The odorous substances identified included carboxylic acids and sulphurous and nitrogenous components. In particular, the chemical structure of the odorous substances found gives Information about their origin<\/strong>. Based on this information, the Routes of entry into packaging waste<\/strong> and into the recyclate via the recycling process<\/strong> traceable. Depending on the process step at which an odour substance cannot be removed or is even newly formed, targeted measures can be derived to reduce or prevent new formation.<\/p>\n

Fewer odours with separate collection in the yellow bag<\/h2>\n

The study has shown that already the way in which packaging waste is collected<\/strong>, a decisive Influence on odour quality<\/strong> of the shopping bags. Significant advantages Separate collection in the yellow bag<\/strong>. The waste collected via this route had a significantly lower overall odour load.<\/p>\n

The findings from the study can now be used to develop customised Solutions for optimising the odour of plastic recyclates<\/strong> from the collection onwards.<\/p>\n

Source: Fraunhofer IVV<\/em><\/p>","protected":false},"excerpt":{"rendered":"A study by the Fraunhofer IVV now shows solutions for optimising the odour of plastic recyclates from packaging waste that are to be used in the manufacture of new products.","protected":false},"author":20,"featured_media":32769,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"__cvm_playback_settings":[],"__cvm_video_id":"","rank_math_description":"","rank_math_focus_keyword":"","rank_math_title":"","csco_display_header_overlay":false,"csco_singular_sidebar":"","csco_page_header_type":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[22],"tags":[65,57569,54,31,32,56],"class_list":{"0":"post-32768","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-packmittel-und-packstoffe","8":"tag-abfalltechnik-und-recycling","9":"tag-fraunhofer-ivv","10":"tag-kunststoff-und-verbunde","11":"tag-nachhaltigkeit-und-green-packaging","12":"tag-packmittel-und-packstoffe","13":"tag-qualitaetssicherung","14":"cs-entry","15":"cs-video-wrap"},"acf":[],"vimeo_video":null,"_links":{"self":[{"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/posts\/32768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/users\/20"}],"replies":[{"embeddable":true,"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/comments?post=32768"}],"version-history":[{"count":0,"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/posts\/32768\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/media\/32769"}],"wp:attachment":[{"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/media?parent=32768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/categories?post=32768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/packaging-journal.de\/en\/wp-json\/wp\/v2\/tags?post=32768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}