GB/T 40006.1-2021Plastics - Recycled plastics - Part 1: General rules (English PDF)

1 Scope

Part 1 of China's national standard series for recycled plastics, giving the general rules. It specifies the classification, the terms and definitions, and the requirements common to the whole series. The series exists because recycled plastic has been traded for decades without a specification, on visual inspection and trust, which is why it has been priced as a commodity discount rather than as a material with properties. The general rules establish what has to be declared about any recycled plastic: its polymer identity and how that was determined, its source and whether it is post-industrial or post-consumer, its processing history, the contaminants it may carry, and the property data that lets a converter judge whether it will run. Post-consumer material is the harder case and the one that matters environmentally, since post-industrial scrap was never waste in any real sense - it went straight back into the process that made it.

This document specifies the terms and definitions, classification and designation, requirements, test methods, and traceability document of recycled plastic. This document applies to recycled plastic particles made from waste thermoplastics as raw materials through processes such as screening, classification, cleaning, melt extrusion granulation (including granulation processes such as bracing, hot cutting and/or water cutting). This document also applies to polyethylene terephthalate (PET) bottle flakes. This document does not apply to recycled plastic from hazardous waste and radioactive waste such as medical waste, pesticide packaging.

2 Normative references

The contents of the following documents, through normative references in this text, constitute indispensable provisions of this document. Among them, for dated references, only the edition corresponding to that date applies to this document. For undated references, the latest edition (including all amendments) applies to this document.

GB/T 1844.1-2008 Plastics - Symbols and abbreviated terms - Part 1: Basic polymers and their special characteristics

GB/T 2035 Terms and definitions for plastics

GB/T 6040-2019 General rules for infrared analysis

GB/T 19466.2-2004 Plastics - Differential scanning calorimetry (DSC) - Part 2: Determination of glass transition temperature

GB/T 19466.3-2004 Plastics - Differential scanning calorimetry (DSC) - Part 3: Determination of temperature and enthalpy of melting and crystallization

GB/T 30102 Plastics - Guidelines for the recovery and recycling of plastic waste

GB/T 37638 Determination of polybrominated biphenyls and polybrominated diphenyl ethers in plastic products - High performance liquid chromatography

GB/T 37639 Determination of polybrominated biphenyls and polybrominated diphenyl ethers in plastic products - Gas chromatography and mass spectrometry

GB/T 38287 Determination of hexavalent chromium in plastic materials

GB/T 38290 Determination of cadmium in plastic materials

GB/T 38291 Determination of lead in plastic materials

GB/T 38292 Determination of mercury in plastic materials

GB/T 38470-2019 Recycling materials for brass SN/T 2249 Determination of phthalates in plastics and plastic articles - Gas chromatography-mass spectrometry (GC-MS) method

3 Terms and definitions

The terms and definitions defined in GB/T 2035 and GB/T 30102 and the following one apply to this document.

3.1 Recycled plastic Plastic prepared by processing in a production process from plastics waste materials for the original purpose or for other purposes, but excluding energy recovery.

Note 1: In a broad sense, the recycling of plastics covers any re-use of scrap material or discarded articles, including pyrolysis to recover useful organic chemicals.

Note 2: Recycled plastics may or may not be reformulated by the addition of fillers, plasticizers, stabilizers, pigments, etc.

Note 3: Refer to Appendix A for terms related to recycled plastic in ISO 472:2013.

4 Classification and designation

4.1 General See Table 1 for the standard mode of designation of recycled plastic.

6.1.1.1 Glass jar: The volume of the glass jar is about 1 L, with a sealable lid. At room temperature and 80 °C, it is clean and odorless.

6.1.1.2 Thermostat: It shall have an air circulation system; be able to keep the temperature at (80±2)°C or (60±2)°C.

6.1.1.3 Electronic balance. Accuracy is ±

0.01 g.

6.1.2 Odor assessment team In order to obtain consistent data, the odor assessment team shall be composed of at least 3 people. Members of the odor assessment team must not have behaviors that affect the results of the odor assessment, such as smoking, using cosmetics, chewing gum, etc. After being determined, the members of the team shall remain unchanged. 3 h before the odor evaluation, members of the team shall not eat food with strong odor. People with cold and nasal congestion shall not participate in the odor evaluation.

5 Requirements...

6 Test methods...

Appendix B

(Normative) Qualitative analysis of materials by infrared spectroscopy B.1 Sampling Randomly select 10 samples from a batch of recycled plastic products. Each shall not be less than 10 g. B.2 Specimen preparation B.2.1 Specimen preparation equipment Metal plate equipped with a temperature control unit. The temperature control range must include the melting temperature of the material specified in other parts of this document. A gasket with material thickness specified in other parts of GB/T 40006 is required. B.2.2 Preparation of film samples The sample obtained in B.1 is made into a film according to