Czasopismo | OPAKOWANIE | Rocznik 2013 - zeszyt 11

Evaluation system for selected criteria of plastics

nr katalogowy: 80612

1. Compostable plastics certification Standards are a set of requirements which a product or service has to fulfil. There are two main groups of standards: standard specification, a set of requirements, pass/fail values which a product must comply with to be assigned with a certain label. An example of standard specification for compostable plastics is EN 13432. The basis of EN 13432 requirements was then broadened to plastics with standard specification EN 14995. There are also other standard specification e. g. ASTM D6400, ISO 17088 and others; testmethods, evaluations, determinations or practices. Testmethods describe how to perform tests and how to validate them. To test specific characteristic of the compostable product there is a reference in a standard specification to the relevant testmethod according to which testing should be carried out. Standard specifications aremost often the basis for a certification system/scheme - but not always (the certification scheme for bio-based plastics). Certificate is a confirmation that a product/ service is in compliance with the specific request. The verification and testing of a product are based on test methods. 1.1. Specification for compostable plastics The most known specification for compostability is previously mentioned EN 13432. According to this standard specification the following requirements for compostable products apply: content of heavy metals and other elements below the limits mentioned in the Annex A of the standard; disintegration analysis during biological treatment. 3 months (12 weeks) analysis in industrial or half industrial composting conditions should present sufficient disintegration level (not more than 10% of dry matter should stay above 2 mm sieve); Biodegradation analysis - at least 90% of the organic carbon MUST be converted into carbon dioxide within 180 days (mineralization); ecotoxicity analysis assessing that biological treatment is[...]

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