This standard specifies the test method for the anti-ignition properties of soft furniture such as spring mattresses and sofas. This standard is applicable to soft furniture such as spring mattresses and sofas used in hotels, homes, etc. GB 17927-1999 Evaluation of anti-ignition properties of soft furniture spring mattresses and sofas GB17927-1999 standard download decompression password: www.bzxz.net

GB17927-1999
This standard is prepared in accordance with GB/T1.1-1993 "Guidelines for Standardization Work Unit 1: Rules for Drafting and Presenting Standards Part 1: Basic Regulations for Standard Preparation". Technically, it refers to ISO81911:1987 "Evaluation of the Ignition Capability of Upholstered Furniture Part 1: Ignition Source: Smoldering Cigarette" formulated by ISO/TC136 (Furniture Technical Committee). This standard conducts cigarette ignition resistance test and evaluation on upholstered furniture such as spring mattresses and sofas. This standard partially refers to GA136-1996 "Test and Classification Methods for Flammability of Upholstered Furniture". If there are flammability grade requirements for the product, GA136 can be referred to for the product's anti-ignition and combustion characteristics tests. Appendix A of this standard is a prompt appendix.
This standard is proposed by the State Bureau of Light Industry.
This standard is under the jurisdiction of the National Furniture Standardization Center. The drafting unit of this standard: Shanghai Furniture Research Institute. The main drafters of this standard are Zhang Jiaji, Liu Yaoguo, Mao Zongli, Gu Ming and Li Tengguang. 567
1 Scope
National Standard of the People's Republic of China
Spring mattress and sofa
Upholstered furniture
Assessment of the resistance to ignitionof the spring mattress and the sofaGB17927—1999bzxz.net
This standard specifies the test method for the resistance to cigarette ignition of upholstered furniture such as spring mattress and sofa. This standard is applicable to upholstered furniture such as spring mattress and sofa used in hotels, families and other occasions. 2 Definitions
This standard adopts the following definitions.
2.1 Afterflame
Under the specified test conditions, the material continues to burn with flames after the ignition source is removed. 2.2 Afterglow
Continued flameless combustion of a material after flaming combustion has ceased, or if no flame is generated, after the ignition source is removed under specified test conditions.
2.3 Danger of ignition The possibility of a material being ignited when it is heated by a heat source or in direct contact with it. 2.4 Resistance to ignition The property that a material is not easily ignited when it is heated by a heat source or in direct contact with it. 3 Ignition criteria
3.1 Smoldering ignition
All of the following characteristics are considered to be smoldering ignition: a) the specimen exhibits gradually increasing smoldering characteristics, so that it would be unsafe to continue the test and fire-fighting measures are required; b) the specimen smolders during the test until it is essentially consumed; c) the specimen smolders to the end of the specimen during the test, that is, it smolders to the upper edge, lower edge, side of the specimen or penetrates to the back (or more than 50 mm away from the initial placement of the ignition source); d) during the final inspection of the specimen at the end of the test, it is found that there is charring that is more obvious than discoloration, and the length of the charring exceeds 100 mm in any direction except upwards from the initial placement of the ignition source; e) after the ignition source is removed, the slow smoldering on the specimen can be counted for more than 10 minutes. 3.2 Flaming combustion ignition
All the following characteristics can be regarded as flaming combustion ignition: a) The test piece shows a gradually intensified flaming combustion characteristic, so that it will be unsafe to continue the test and fire extinguishing measures are required; State Administration of Quality and Technical Supervision approved on December 17, 1999 568
2000-05-01 implementation
GB 17927-1999
b) The test piece burns flamingly during the test until it is essentially completely consumed; c) The flame front of the test piece reaches its lower edge, side or penetrates to the back (or is more than 50 mm away from the initial placement position of the ignition source) during the test;
d) After the ignition source is removed, the slow flaming combustion on the test piece can be counted for more than 5 minutes. 4 Test safety facilities
4.1 Safety smoke exhaust facilities
The test room should be a room with air convection with an area of ​​more than 15m2. The test room should use safe smoke exhaust facilities to remove the smoke generated by the test and ensure that the test operator is not poisoned by the smoke. 4.2 Fire extinguishing equipment
At the end of the test, portable or fixed water sprinklers, halogenated hydrocarbons and other types of fire extinguishing equipment, as well as buckets, rescue blankets, etc. can be used to extinguish the fire.
5 Test instruments and equipment
5.1 Clock
The timing range of the clock should be no less than 1h, with an accuracy of 1 s. 5.2 Ignition source (burning cigarette ignition source) The cigarette is a cylindrical cigarette without a filter tip, or with the filter tip removed, and should meet the following requirements: Length: 60 mm~74mm;
Diameter: 8mm±0.5mm;
Mass per unit length: (0.7g±0.1g)/50mm; Cigarette burning time: (12.0min±3.0min)/50mm. From the same type of cigarettes, take one at random from each group of 10 and measure the burning time of the cigarette according to the following method. Take out one cigarette stored in the environment specified in 7.2 and mark it at 5mm and 55mm from the ignition end. Light the cigarette according to the provisions of 8.1.1 and place the unlit end horizontally on a thin steel needle placed in the air (air velocity 0.02m/s~0.20m/s). The length of the steel needle inserted into the cigarette should not exceed 11mm. The test records the time it takes for the cigarette to burn from the two marks of 5mm to 55mm. 6 Test piece
All soft furniture such as solid spring mattresses and sofas used in hotels, homes, etc. or their independent components can be used as test pieces for the anti-ignition property test.
7 Test environment
7.1 The test piece should be stored in the natural environment for at least one week before the test. 7.2 The cigarettes used for the test should be stored in an environment with a temperature of 15℃~~25℃ and a relative humidity of 40%~~70% for about 16 hours before the test. 7.3 The test should be carried out in an environment with a temperature of 15℃~25℃, a relative humidity of 40%~~70%, and an air flow rate of (0.02~0.2)m/s.
8 Test procedure
For the test procedure, please refer to Appendix A (Suggestive Appendix). 8.1 Cigarette ignition source test
8.1.1 Light a cigarette that meets the requirements of Article 5.2, and inhale until the cigarette tip burns and glows. During the lighting process, the cigarette burnout should be between 5 mm and 8 mm.
GB 17927 -1999
8.1.2 Place a lit cigarette along the junction of the vertical and horizontal surfaces of the test piece, with the cigarette close to the vertical surface (or place it in other places that are most likely to ignite soft furniture such as spring mattresses and sofas, that is, the inside of the seam and local depressions such as pits of harnesses). The distance between the cigarette and any traces left on the test piece by any test that may have been conducted before this test should be no less than 50mm. At the same time as the cigarette is placed, the clock starts timing.
8.1.3 Observe the combustion process and record all smoldering or flaming combustion phenomena of fabrics and fillings. Note: Smoldering is difficult to detect, but it is relatively easy to determine that certain parts around the cigarette are smoking and smoldering. When observing, you can use a flashlight or a reflector to illuminate the rising smoke column downward, so that it is easy to observe the generation of smoke. 8.1.4 If smoldering ignition or flaming ignition is found on the test piece at any time within 1 hour after the cigarette is placed, it should be extinguished immediately. The test results indicate that the test piece has not passed the resistance to cigarette ignition test. At the same time, record the time from the placement of the cigarette to the extinguishing of the ignition of the test piece. In this case, the test should not be repeated and a test report can be written (see Chapter 9). If smoldering ignition or flaming ignition does not occur on the test piece within 1 hour after the cigarette is placed, or the cigarette goes out before burning its entire length, these phenomena should be recorded and the test should be repeated. When repeating the test, a new cigarette is lit and placed in a new position on the test piece in accordance with the provisions of Section 8.1.2. If smoldering ignition or flaming ignition still does not occur in the repeated test, or the cigarette goes out again before burning its entire length, these phenomena should be recorded and the final inspection specified in Section 8.2 should be carried out immediately. If no smoldering is found in the final inspection, it indicates that the test piece has passed the resistance to cigarette ignition test. If smoldering is found during the final inspection, it should be extinguished immediately, which indicates that the test piece has not passed the cigarette ignition resistance test.
Note: The repeated test can be carried out at the same time as the initial test. 8.2 Final inspection
If no flame or smoldering ignition is found on the surface of the test piece, the inside of the test piece should be disassembled and inspected immediately after all the above test procedures are completed. Observe whether there is smoldering. If smoldering is found, it should be extinguished immediately. This indicates that the test piece has not passed the test. For safety reasons, ensure that the smoldering is completely extinguished. 9 Test report
The test report should include the following contents:
a) indicate the standard adopted for the test, i.e. this standard; b) the composition and structure of the test piece;
c) the type of ignition source;
d) whether the test piece ignites (smoldering ignition or flaming ignition) in each test. If ignition occurs in one of the only two tests and not in the other, the comprehensive test result is ignition; e) in each test, the burning time of the cigarette, whether the cigarette goes out before burning its entire length, whether fire extinguishing measures are needed for the test piece, and whether smoldering is found when the test piece is disassembled; f) the final test result, pass or fail; g) the test environment of the test piece;
h) typical characteristics of combustion, such as melting, dripping, charring, and the development process from smoldering to flaming combustion; i) the time of major events, such as the time when the test piece is ignited, the time when the fabric cracks, and the time when the test piece goes out. 570
Quickly extinguish fire
Record extinguishing time
Measure damage range
Conclusion: After being lit
Putting cigarette
Aggravated
After burning or smoldering
Light cigarette
Cigarette smolders stably
Burning length 5~8mm
Putting cigarette
Starting" timing
Whether there is aggravated afterburning or smoldering
GB 17927 -1999
Appendix A
(Suggestive Appendix)
Test of anti-ignition characteristics of soft furniture
Check and record whether the cigarette
has smoldered its entire length
Within 1 hour after placing the cigarette
there is continued combustion or smoldering ignition
Record: No smoldering was detected on the outside
Whether the test procedure of the specimen has been completed
Final inspection
Extinguish the fire and record the extinguishing time
Once smoldering is found inside
Extinguish the fire and record the extinguishing time
Record the time when the cigarette is extinguished
Do the next test
Do the next test
Except directly above the fire source!
There is burning outside 100mm
Measure the damage range
Conclusion: Ignition
After-flame ignition or
smoldering ignition is detected from the outside
Measure the damage range
Conclusion: Ignition
No smoldering is detected from the outside, and smoldering is found in the final inspection
Measure the damage range
Conclusion: Not ignited
No smoldering is found in the final inspection
(Repeat the test)
Soft furniture anti-ignition property test flow chartMeasure the damage range
Conclusion: Not ignited
Not completely burned
(Repeat the test)
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