GB 17927-2024 English PDF (GB17927-2024)

Delivery: 3 seconds. Download true-PDF + Invoice.
Get QUOTATION in 1-minute: Click GB 17927-2024
Historical versions: GB 17927-2024
Preview True-PDF (Reload/Scroll if blank)

GB 17927-2024: Safety technical specification of fire retardant for furniture
GB 17927-2024
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 97.140
CCS Y 80
Replacing GB 17927.1-2011, GB 17927.2-2011
Safety technical specification of flame resistance for
furniture
ISSUED ON: AUGUST 23, 2024
IMPLEMENTED ON: SEPTEMBER 01, 2025
Issued by: State Administration for Market Regulation;
Standardization Administration of the People's Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative references ... 4
3 Terms and definitions ... 4
4 Requirements ... 5
5 Ignition criteria ... 5
6 Verification methods ... 6
7 Result determination ... 7
8 Marks ... 8
Annex A (normative) Ignition test procedure for cigarette ignition sources ... 9
Annex B (normative) Test procedure for ignition simulation with a match flame ignition
source ... 12
Annex C (normative) Test procedures for ignition of wood stack ignition sources ... 15
Foreword
This document was drafted in accordance with the rules given in GB/T 1.1-2020
"Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents".
This document replaces GB 17927.1-2011 "Upholstered furniture -- Assessment of the
resistance to ignition of mattress and sofa -- Part 1: Smouldering cigarette" and GB
17927.2-2011 "Upholstered furniture -- Assessment of the resistance to ignition of
mattress and sofa -- Part 2: Match flame equivalent". Compared with GB 17927.1-2011
and GB 17927.2-2011, in addition to structural adjustments and editorial changes, the
main technical changes in this document are as follows:
a) Flame-retardant grade III has been added (see Chapter 4 of this Edition);
b) The test method for ignition source of wood pile has been added (see 6.6 of this
Edition);
c) The length of the cigarette has been changed from (60±5) mm to (55±5) mm (see
A.1 in Annex A of this Edition; 6.2 in GB 17927.1-2011).
Attention is drawn to the possibility that some of the elements of this document may be
the subject of patent rights. The issuing authority shall not be held responsible for
identifying any or all such patent rights.
This document was proposed by and shall be under the jurisdiction of Ministry of
Industry and Information Technology of the People's Republic of China.
Main drafting organizations of this document:
The drafting organizations of this document:
Main drafters of this document:
Versions of standard substituted by this document are:
- It was first published in 1999 as GB 17927.1-1999, and first revised in 2011;
- It was first published in 2011 as GB 17927.2-2011;
- This is the first integrated revision.
Safety technical specification of flame resistance for
furniture
1 Scope
This document specifies the requirements, inspection rules and marking for the flame
resistance of furniture. It describes the corresponding verification methods.
This document applies to the quality control of upholstered furniture and furniture
upholstered parts.
2 Normative references
The following referenced documents are indispensable for the application of this
document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
GB/T 28202-2020, Furniture industry terminology
3 Terms and definitions
For the purposes of this document, the terms and definitions defined in GB/T 28202-
2020 and the followings apply to this document.
3.1 flame resistance
The property of inhibiting, slowing down or stopping the spread of flame.
3.2 afterglow
Under specified test conditions, after the fire source is removed or the flaming
combustion is terminated, the specimen will undergo an exothermic oxidation reaction
without flame. After being separated from the fire source, it will spread on its own,
sometimes accompanied by incandescent light.
3.3 flaming
A gaseous combustion process accompanied by luminescence.
3.4 ignition
The specimen appears to be afterglow or flaming under the action of fire source.
e) During the final inspection, no specimen shall not have a char spread other than
discoloration greater than 100 mm within its filling, starting from the position
nearest the initial ignition source, in any direction other than upwards.
5.2 Flaming ignition
The following phenomena are considered as flaming ignition:
a) If there is a gradual increase in flaming ignition on the specimen, so that
continuing the test will endanger safety, effective fire-fighting measures shall be
taken;
b) During the test, the soft bag part was basically burned by the flame;
c) During the test, except for the top of the vertical part of the specimen, the flame
front has reached the end of the specimen or penetrated the entire thickness of the
specimen;
d) For the simulated match flame ignition source: the specimen continues to burn for
more than 2 min after the combustion tube is removed, or the flame front spreads
100 mm beyond the ignition point of the combustion tube; For the wood pile
ignition source: after the wood pile is ignited, any specimen continues to burn for
more than 10 min;
e) For all fire sources, the burning drops of the specimen shall burn alone on the
ground for a period exceeding the time specified in d).
6 Verification methods
6.1 Test safety facilities
6.1.1 Test chamber
The test chamber can be a room with a volume greater than 20 m3 (containing sufficient
oxygen for the test), or a small space with ventilation facilities. The airflow rate around
the test bench is 0.02 m/s~0.2 m/s, which does not interfere with the combustion test.
6.1.2 Fire extinguishing equipment
Taking into account that certain material combinations may produce violent combustion
during testing, adequate and effective fire-fighting facilities shall be provided.
6.2 Test instruments and equipment
6.2.1 Timer
The timer shall have a range of no less than 60 min and an accuracy of 1 s.
6.2.2 Test platform
The surface of the work platform shall be flat and solid to ensure that the specimen can
be placed stably.
6.3 Pretreatment and test environment
6.3.1 Pretreatment environment
Temperature: (23.0±2.0)℃. Relative humidity: (50.0±5.0)%. The pretreatment time of
cigarette, wood pile ignition source and specimen is at least 24 h.
6.3.2 Test environment
The test shall be conducted in an environment with a temperature of 10.0℃~30.0℃
and a relative humidity of 15.0%~80.0%.
6.4 Ignition test of cigarette ignition source
Perform the test in accordance with the provisions of Annex A.
6.5 Ignition test of simulating match flame ignition source
Perform according to the provisions of Annex B.
6.6 Ignition test of wood pile ignition source
Perform according to the provisions of Annex C.
7 Result determination
7.1 Selection of ignition source
Select the corresponding ignition source in Table 1 according to the place where the
furniture is used or the flame-retardant grade requirements.
7.2 Test result determination
Carry out flame-retardant test according to the provisions of Annex A ~ Annex C.
Determine whether the specimen has passed the corresponding flame-retardant grade.
If the test of Annex A is passed, the result is determined to be flame-retardant grade I.
If the test of Annex B is passed, the result is determined to be flame-retardant grade II.
If the test of Annex C is passed, the result is determined to be flame-retardant grade II...