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GB/T 44995-2024Polypropylene packaging container—Guidelines for the construction of initial screening testing methods for doped with recycled plastic (English PDF)

聚丙烯包装容器掺杂回收塑料初筛测试方法构建指南

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

November 28, 2024

Implementation date

June 1, 2025

Scope

GB/T 44995-2024 is the English-translated version of 聚丙烯包装容器掺杂回收塑料初筛测试方法构建指南.

GB/T 44995-2024 is the Chinese national standard covering how a laboratory builds a first-pass test to tell whether a polypropylene container has recycled resin blended into it — the equipment, the preparation of the samples, the test methods themselves, among them the melt mass flow rate and the resistance to oxidative decomposition measured by calorimetry, the properties a screening reads to flag a batch worth a closer look, the analysis of the results, and the test report. It is guidance on constructing the screening method, not a limit on how much recycled content a container may hold. First edition, under the China National Light Industry Council. In force from 1 June 2025. Issued on 28 November 2024, it has been in force since 1 June 2025.

Document preview — GB/T 44995-2024

National Standard of the People's Republic of China

ICS: 83.080
Classification: G 31

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 recycled plastic
3.2 Melt mass flow rate meltmassflowrate; MFR
3.3

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1: Structure and drafting rules for standardization documents" Drafting.

Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.

This document was proposed by China Light Industry Federation.

This document is under the jurisdiction of the National Technical Committee for Standardization of Food Contact Materials and Products (SAC/TC397).

This document was drafted by: Hebei Product Quality Supervision and Inspection Institute, Hebei Shangdong Packaging Technology Co., Ltd., Hebei Product Quality Safety Testing Technology Center, Dongguang County Quality and Technical Supervision and Inspection Institute (Hebei Province Packaging Machinery Product Quality Supervision and Inspection Center), Jiangnan University, Xiongxian Quality and Technical Supervision and Inspection Institute, Shijiazhuang College.

The main drafters of this document are: Tian Xu, Wang Lei, Zhao Song, Wang Canjun, Qin Wanbao, Wang Yanling, Zhang Yanli, Lu Lixin, Liu Zhenzhuang, Yu Shengzhe, Nie Bo.

Polypropylene packaging containers Guidance on the Construction of a Primary Screening Test Method for Adulterated Recycled Plastics

1 Scope

This document provides a test machine for the initial screening test method for adulterated recycled plastics in polypropylene (PP) packaging containers (hereinafter referred to as "containers").

Guidance on test equipment, sample preparation, test methods, analysis of results and test reporting.

This document is applicable to the initial screening test method for recycled plastics in packaging containers processed and prepared with polypropylene resin as the main raw material Build.

This document is not applicable to the construction of preliminary screening test methods for adulterated recycled plastics in other plastics and olefin composite products.

2 Normative references

GB/T 2035-2008

GB/T 3682.1

GB/T 19466.1

GB/T 19466.3

GB/T 19466.6

3 Terms and definitions

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

3.1 recycled plastic

Plastics made from washed and shredded waste products.

[Source. GB/T 2035-2008, 2.825, modified]

3.2 Melt mass flow rate meltmassflowrate; MFR

Under the conditions of specified temperature, load and piston position, the extrusion rate of molten resin through a die of specified length and inner diameter is specified.

The mass extruded over time was taken as the melt mass flow rate.

Note. The unit is gram per ten minutes (g/10min).

[Source. GB/T 3682.1-2018, 3.1, modified]

3.3

A relative measure of the resistance of a stabilized material to oxidative decomposition. Determined by calorimetry at normal pressure, oxygen or air atmosphere and specified temperature.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 2035-2008 · GB/T 3682.1 · GB/T 19466.1 · GB/T 19466.3 · GB/T 19466.6

Editions of GB/T 44995

Edition	Title	Revision	Status
GB/T 44995-2024	Polypropylene packaging container - Guidelines for the construction of initial screening testing methods for doped with recycled plastic	current edition	Current

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