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GB 17927.1-2011 English PDF (GB17927.1-2011)

GB 17927.1-2011 English PDF (GB17927.1-2011)

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GB 17927.1-2011: Upholstered furniture -- Assessment of the resistance to ignition of mattress and sofa -- Part 1: Smoldering cigarette

This part of GB 17927 specifies the test methods and assessment rules for the resistance to ignition of upholstered furniture against the ignition source of smouldering cigarettes.
GB 17927.1-2011
GB
NATIONAL STANDARD
OF THE PEOPLE REPUBLIC OF CHINA
ICS 97.140
Y 80
Replacing GB 17927-1999
Upholstered furniture ?€? Assessment of the resistance
to ignition of mattress and sofa ?€?
Part 1. Smouldering cigarette
(ISO 8191-1.1998, Furniture - Assessment of the ignitability of upholstered furniture - Part 1. Ignition source. smouldering cigarette, NEQ)
ISSUED ON. JUNE 16, 2011
IMPLEMENTED ON. DECEMBER 01, 2011
Issued by. General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China;
Standardization Administration of the PRC.
Table of contents
Foreword ... 4
1 Scope ... 6
2 Terms and definitions ... 6
2.1 Progressive smouldering ... 6
2.2 Flaming ... 6
2.3 Afterflame ... 6
2.4 Afterglow ... 6
2.5 Ignition ... 7
2.6 Resistance to ignition ... 7
2.7 Mattress ... 7
2.8 Upholstered furniture unit ... 7
2.9 Sofa ... 7
3 Ignition criteria ... 7
3.1 Smouldering ignition ... 7
3.2 Flaming ignition ... 8
4 Principles ... 8
5 Test safety facilities ... 8
5.1 Laboratory ... 8
5.2 Fire extinguishing devices ... 9
6 Test equipment ... 9
6.1 Timers ... 9
6.2 Cigarette ignition source ... 9
6.3 Test platform ... 9
7 Pretreatment and test environment ... 10
7.1 Preconditioning environment ... 10
7.2 Test environment ... 10
8 Test procedures ... 10
8.1 Test specimen placement ... 10
8.2 Preparation of ignition source ... 10
8.3 Placement of ignition source ... 10
8.4 Observation and recording in combustion processes ... 11
8.5 Final inspection ... 11
8.6 Assessment of resistance to ignition ... 11
9 Product designation ... 11
10 Test report ... 12
Appendix A (Informative) Test flow chart for upholstered furniture resistance to ignition of cigarettes ... 13
Foreword
All the technical contents of this part of GB 17927 are mandatory.
GB 17927 ?€?Upholstered furniture - Assessment of the resistance to ignition of mattress and sofa - Part 1. Smouldering cigarette?€? has been planned to issue the follow parts.
- Part 1. Smoldering cigarettes;
- Part 2. Simulated flame of matches;
...
This part is part 1 of GB 17927.
This part was drafted in accordance with the rules given in GB/T 1.1-2009 ?€?Directives for standardization - Part 1. Structure and drafting of standards?€?. This part replaces GB 17927-1999 ?€?Upholstered furniture - Assessment of the resistance to ignition of mattress and sofa - Smouldering cigarette?€?. As compared with GB 17927-1999, the main technical changes are as follows. - MODIFY the scope of application, which is applicable to the assessment of the resistance to ignition of home mattresses and sofas (Chapter 1 of 1999 version; Chapter 1 of this version);
- ADD and MODIFY some definitions. ADD the definition of progressive
smouldering, flaming, ignition, mattress, upholstered furniture unit, and sofa (2.1, 2.2, 2.5, 2.7, 2.8, 2.9 of this version); MODIFY the definition of resistance to ignition in the original standard (2.4 of 1999 version; 2.6 of this version); DELETE the definition of ignition hazard (2.3 of 1999 version); - MODIFY the test part of the upholstered furniture of the original standard; respectively SPECIFY the test part of mattress and sofa (8.1.2 of 1999
version; 8.3 of this version);
- MODIFY the pretreatment environment of the test specimen before the test (7.1 of the 1989 version; 7.1 of this version); and SPECIFY the time after pretreatment until to the start of test;
- MODIFY the test environment (7.3 of 1999 version; 7.2 of this version); - MODIFY the ?€?assessment of resistance to ignition?€? (8.1.4 of 1999 version; 8.6 of this version);
Upholstered furniture - Assessment of the resistance
to ignition of mattress and sofa ?€?
Part 1. Smouldering cigarette
1 Scope
This part of GB 17927 specifies the test methods and assessment rules for the resistance to ignition of upholstered furniture against the ignition source of smouldering cigarettes.
This part is applicable to the test and assessment for the resistance to ignition of the household mattress, sofas and other upholstered furniture; AND the test and assessment of the resistance to ignition of the upholstered furniture unit can make reference to this part.
2 Terms and definitions
The following terms and definitions apply to this document.
2.1
Progressive smouldering
It refers to an exothermic oxidation reaction without flame, which will spread on its own after taking off the ignition source, AND sometimes is
accompanied with incandescing or lighting phenomenon.
2.2
Flaming
It refers to the gaseous combustion process accompanied by luminescence. 2.3
Afterflame
It refers to the continuous flaming of the test specimen after being moved away from the ignition source under the specified test conditions.
2.4
Afterglow
It refers to the progressive smouldering of the test specimen after removing the ignition source or terminating flaming under the specified test conditions. 2.5
Ignition
It refers to the progressive smouldering or flaming phenomenon of the test specimen under the effect of ignition source.
2.6
Resistance to ignition
It refers to the characteristics of the test specimen of difficult to be ignited under the effect of ignition source.
2.7
Mattress
It refers to the soft bedding which uses the elastic material or other materials as the core material AND is covered with textile fabrics or other materials. 2.8
Upholstered furniture unit
It refers to the member or component which is made by wrapping the elastic material or other soft filler materials in the textile fabrics, natural leather, and artificial leather and so on.
2.9
Sofa
It refers to the flexible seat made from soft materials, wood or metal materials, AND with backrest.
3 Ignition criteria
3.1 Smouldering ignition
In this part, the following conditions are considered as smouldering ignitions. a) The test specimen has a gradual increase in the smouldering
characteristics, so continuing test will endanger safety AND it is necessary to take effective fire suppression measures;
7 Pretreatment and test environment
7.1 Preconditioning environment
Temperature (2 3.0 ?? 2.0) ??C, relative humidity 50.0% ?? 5.0%;
The pretreatment time for cigare...

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