Fabric flame retardant grade



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 performa…

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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