GB/T 33731-2017Hair products—Evaluation for burning behaviour (English PDF)
发制品 燃烧性能的评定
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
May 12, 2017
Implementation date
December 1, 2017
Scope
GB/T 33731-2017 is the English-translated version of 发制品 燃烧性能的评定.
GB/T 33731-2017 is the Chinese method for judging how hair products behave when they burn, using a vertical burning test. It defines the terms the result is expressed in, among them coloured hair, afterflame, afterflame time in minutes and damage length in centimetres.
Its principle clause describes the test: a specimen of specified size is placed in a specified burning device and ignited for a specified time, after which the afterflame time and the damage length are measured and melting and agglomeration observed.
A separate clause deals with the safety of the operator, who wears a gas mask and works in a fume hood with the ventilation closed while the sample burns. It applies to hair products, processed or unprocessed, cites GB/T 3291.3 and GB/T 23166, was issued on 12 May 2017 and has applied since 1 December 2017.
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Document preview — GB/T 33731-2017
National Standard of the People's Republic of China
- ICS
- 59.080.99
- Classification
- Y 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative reference documents
- 3 Terms and definitions
- 4 Principle
- 5 Safety and health protection for test personnel
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the use of vertical combustion method for the determination of the combustion performance of products and performance evaluation.
This standard applies to unprocessed or processed hair products made of hair color.
2 Normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 3291.3 Textiles - Properties and test terms for textile and textile materials - Part 3: General purpose
GB/T 23166 hair products terminology
3 Terms and definitions
GB/T 3291.3 and GB/T 23166 and the following terms and definitions apply to this document.
3.1 Color hair
Processed to make hair to form a different color of human hair or human hair.
3.2 Continued afterflame
In the specified test conditions, remove the (point) after the ignition of the material flame burning.
3.3 Continued burning time afterflame time
Under the specified test conditions, the time (in minutes) after the fire is removed from the point of ignition.
3.4 Damage length
In the specified test conditions, the maximum length of the material damaged part in the specified direction, in centimeters.
4 Principle
Under the specified test conditions, a certain size of the sample placed in a specified combustion device within the ignition, after the provisions of the ignition time, the test Such as the burning time, the length of damage, and observe the melting agglomeration, melting and other phenomena, in order to assess the burning performance of hair products.
5 Safety and health protection for test personnel
The burning of the hair products may produce smoke and harmful gases that affect the health of the operator, and the test personnel are required to wear a gas mask. Should be Test equipment installed in the fume hood, after each test should be excluded from the smoke and dust, but in the sample burning process, to close the ventilation system, so as not to Affect the test results.
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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
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Related Standards
GB/T 23166-2019 — Hair products - Terminology
GB/T 3291.3-1997 — Textiles--Terms of textile material properties and test--Part 3:General
GB/T 7251.4-2026 — Low-voltage switchgear and controlgear assemblies - Part 4: Particular requirements for assemblies for construction sites (ACS)
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