The flame retardancy of fabrics is divided into three levels: A, B, and C. The flame retardant performance items and indicators are shown in the table. The flame retardant performance of the...
The flame retardancy of fabrics is divided into three levels: A, B, and C. The flame retardant performance items and indicators are shown in the table. The flame retardant performance of the sewing thread is that it does not melt or scorch during the test.
Flame retardant performance items and indicators of GB8965.1-2009
|
Test project |
Protection level |
Indicators |
Number of washes |
|
Afterburning time/s |
Grade A |
≤2 |
50 |
|
Class B |
≤2 |
||
|
C level |
≤5 |
12 |
|
|
Smoldering time/s |
Grade A |
≤2 |
50 |
|
Class B |
≤2 |
||
|
C level |
≤5 |
12 |
|
|
Damaged length/mm |
Grade A |
≤50 |
50 |
|
Class B |
≤100 |
||
|
C level |
≤150 |
12 |
|
|
Melting, dripping |
A, B, C |
Not allowed |
— |
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