Inherently fireproof cut pile velvet fabric for stage curtain

PROPERTY

Items

Index

Results

Standard

Lab

Note

Flame retardancy

B

Fire growth rate index used for classification purposes, W/S≤120

0

GB8624-2012;
EN13501-1：2007

NFTC, SGS

Tested after 50 times washing

Total heat release within 600s, MJ≤7.5

1.4

No lateral flame spread to the edge of the specimen (LFS), m

Pass

Flame spread (Fs), mm≤150 within 60s

33

No ignite the paper

Pass

S1

Smoke growth rate (SMOGRA)，m2/s2≤30

0

Total smoke production within 600s (TSP600S),m2

40

d0

No flaming droplets/particles within 600s

Pass

t0

Smoke Toxity (For GB8624 only)

ZA1

Oxygen Index≥32

35

Burning length≤150mm

65

After flame times≤5s

0

B1

Afterglow times≤5s

0

GB8624-1997;
GB20286-2006

NFTC, SGS

Tested after 50 times washing

No ignite the absorbent cotton

Pass

Smoke density rate (SDR)≤15

3

Smoke Toxity rate less than ZA2

ZA1

B1

Reaching the measuring mark within 20s

No

DIN 4102-1( May 1998)

SGS

Self extinguish of the flame(s)

13

End of after flaming(s)

13

End of after glowing(s)

13

Molten dripping

No

M1

NF P92 503：1995

Hole

NF P92-507：2004

SGS

Max after flame time withdrawal the pilot flame(s)

0

After grow time(s)

0

Flaming debris

No

Non-flaming debris

Yes

White-hot spots with propagation effects

No

Max destruction length from the lower edge

15

Max width of the destroyed zones between 250mm and 600mm

Non-detected

Flaming molten droplets

No

M1

NF P92 505：1995

Non-flaming molten droplets  

Yes

Ignite the wadding

No

NFPA 701：2010 Method 1

Mass loss≤40%  

22.7%

NFPA 701：2010
Method 1

SGS

Tested after 5 times washing

After flame time(s)

0

Burning time on floor(s)

0

Physics property

Shrinkage rate

Warp≤±2%

-1.3%

FZ/T72001-2009

Local Lab

Weft≤±2%

-1.1%

Color fastness

Changing in shade≥3-4

4

Staining on cotton≥3-4

4

Staining on polyester≥3-4

4-5

Formaldehyde

≤300mg/KG

0

PH value

4.0-9.0

6.3