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            Flame retardant fabric standard
            
                    Flame retardant fabric standard
            
Flame retardant fabric standards are different requirements of different countries and industries for flame retardant fabrics, there are different third party testing organizations to detect, in order to protect fair and just.
            
Flame retardant fabric standard
            
Flame retardant fabric standard, flame retardant clothing standard, flame retardant fabric knowledge
            
Flame retardant fabric standard - BSEN533's full Chinese Name: frock protective clothing - related fabrics and combinations - heat insulation fire - short duration flame spread test
            
Detection methods and criteria:
            
Judgment standard: three level index evaluation standard
            
1: the index test sample after the fire, the fire could not burn at the bottom and top of the sample or spread to the vertical edge of the fabric; can produce holes on the sample but not damage to the vertical edge fabric or cloth top;
            
There must be no burning debris (droplets) falling from the cloth;
            
Sketch map of flame retardant fabric
            
Standard drawings of flame retardant fabrics
            
The removal of the flame combustion stop after carbonization zone smoldering should not be on the fabric damaged area extends to the fabric.
            
Index 2: when the specimen is lit, the flame does not burn and spread to the bottom of the sample, either at the top or at the vertical edge of the fabric;
            
There must be no burning debris (droplets) falling from the cloth;
            
The removal of the flame combustion stop after carbonization zone smoldering should not be on the fabric damaged area extends to the fabric;
            
No hole production.
            
Index 3: when the specimen is lit, the flame does not burn and spread to the bottom of the sample, either at the top or at the vertical edge of the fabric;
            
There must be no burning debris (droplets) falling from the cloth;
            
The removal of the flame combustion stop after carbonization zone smoldering should not be on the fabric damaged area extends to the fabric;
            
No hole production;
            
The delay time of any piece in the six test specimen shall not exceed 2 seconds.
            
The inspection method is carried out according to EN532 standard:
            
Preparation of test specimens: long (200 + 1) mm, X wide (160 + 1) mm
            
Test before washing requirements: A.75 degrees washing 12 times (in accordance with the ENISO10528 industrial washing method); can also be washed according to customer requirements 5 times, and then tested.
            
B. soak the sample in water (BS5651:1978), then dry it 5 times according to the requirements of ISO3175 and test again.
            
This method is suitable for the chemical fiber, cotton and blended fabrics.
            
BSEN532 protective clothing for clothing - insulation test - Test Method for short duration flame spread
            
Test operation process and preparation
            
Test sample preparation (single layer fabric based): six samples length (200 + 1) mm, X width (160 + 1) mm, of which three are radial cut, and the other three for weft cutting, and installed in the cloth folder.
            
Humidity and temperature adjustment: samples shall be placed at least 24 hours in the relative humidity (65 + 5%) and temperature (20 + 2) Celsius for status adjustment. If the test is not performed immediately after adjustment, the adjusted sample shall be placed in a fully enclosed container. From the full sealed container or removed from the adjustment of environmental data, 2 minutes to start testing.
            
Test environment adjustment: test runs are carried out at ambient temperature between 10-30 degrees C and relative humidity between 15-80%. At the same time, at the beginning of the test, the flow rate of each test sample surface flow is 0,2 seconds.
            
Ignition operation position: the surface ignition and detection of kind of perpendicular angle, then the center of the igniter shaft position higher than the lowest row needle 20 mm, at the same time should be a straight line perpendicular center line position and sample detection. Make sure that the distance between the igniter and the sample surface is (17 + 1) mm.
            
Flame adjustment (horizontal flame touches the distance of the sample): the igniter is placed in a vertical resting position, ignition, and preheating of the igniter for at least 2 minutes, so that the flame length remains about 40 mm. Move the igniter to a horizontal resting position and adjust the flame horizontal length to (25 + 2) mm.
            
Flame position: the igniter moves from the initial resting position to the horizontal position. Make sure that the flame reaches the sample in this position.
            
Note: the distance from the flame to the sample shall be checked periodically. ?
            
Test operation process
            
Install test instrument and check sample cloth on test sample holder. The ignition in pattern surface burning 10 seconds. Observe and record the following conditions (refer to the correct flammability test standard)
            
(A) check the nature of the sample and the sequence number of each layer of fabric in the inspection sample made of the multilayer composite fabric,
            
B) which surface of the sample is detected and ignited by detecting flame,
            
(C) for any point of fire, observe whether or not the boundary of the flame is touching the upper edge or the vertical edge of the sample,
            
D) is there a hole formation?,
            
(E) combustion droplets or molten droplets are produced,
            
F) (usually from the carbonization zone is smoldering) spread to breakage,
            
G) the duration of combustion is accurate to the nearest per second,
            
Note: the ignition delay time of less than one second shall be recorded as 0 seconds.
            
H) the smoldering time should also be accurate to the nearest per second.
            
Note: the lack of a second time should be recorded as 0 seconds smoldering.
            
Inspection test report
            
The inspection report shall include the following records:
            
(A) reference standard file number for test methods,
            
(B) for each test specimen, the correct flammability performance criteria are applied and the records are stated as required. DQREV30
                              
            

                    
                
            

                
        
            

        
        
            
            

            
           
            

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