GB/T 41639-2022Plastics - Determination of the degree of disintegration of plastic materials under simulated composting conditions in a laboratory-scale test (English PDF)
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Issued by
State Administration for Market Regulation, China National Standardization Administration
Level / Type
National · Recommended
Issue date
July 11, 2022
Implementation date
February 1, 2023
Scope
GB/T 41639-2022 (Plastics - Determination of the degree of disintegration of plastic materials under simulated composting conditions in a laboratory-scale test) is available as an English-translated PDF.
GB/T 41639-2022 is the Chinese standard "Plastics - Determination of the degree of disintegration of plastic materials under simulated composting conditions in a laboratory-scale test".
Its scope clause reads: This document describes a method for determining the disintegration rate of plastic materials under simulated composting conditions at the laboratory scale.
This document does not apply to the determination of the biodegradability of plastic materials under composting conditions. If declared to be compostable, further testing is required. Its clauses include terms and definitions.
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Document preview — GB/T 41639-2022
National Standard of the People's Republic of China
- Classification
- G 31
Issued by: State Administration for Market Regulation, China National Standardization Administration
Contents
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
1 Scope
This document describes a method for determining the disintegration rate of plastic materials under simulated composting conditions at the laboratory scale.
This document does not apply to the determination of the biodegradability of plastic materials under composting conditions. If declared to be compostable, further testing is required.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.
ISO 3310-1 Technical requirements and inspection of test sieves - Part 1.Test sieves of woven wire mesh (Testsieves-Technical
Note. GB/T 6003.1-2012 Technical requirements and inspection of test sieves - Part 1.Wire woven mesh test sieves (ISO 3310-1.2000, MOD)
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 compost
Organic soil conditioner obtained from the biological decomposition of the mixture. The mixture consists mainly of plant residues and sometimes some organic matter and certain inorganic substances.
3.2 compostability
The ability of materials to be biodegraded during the composting process.
NOTE. If compostability is claimed, it needs to be stated that the material is biodegradable and disintegrates in the composting system (as shown in the standard test method), and that it is
It is fully biodegradable in use. Composting needs to meet relevant quality standards, such as low heavy metal content, no biological toxicity, no clearly distinguishable the remains.
3.3 composting
An aerobic treatment method that produces compost.
3.4 disintegration
The material physically breaks down into extremely fine fragments.
3.5 dry mass
The measured mass of the sample after drying.
NOTE. The dry mass is expressed as a percentage of the wet weight of the sample. […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 17 pages — is available in the English PDF.
Referenced standards
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