MAGIC® TECHNICAL BULLETIN
FIRE TESTING ON MAGIC® DISPLAY MEDIA
magic
Magic® display products were tested for flammability following ASTM E84 Tunnel Test for Surface Burning Characteristics of Building Materials. The purpose of the testing is to ensure that materials used inside buildings are not highly flammable or cause poisonous smoke. Samples are typically mounted on rods & wire or on Ignorganic Rain Forest Cement Boards. Commercial areas require a flame spread of 25 or less. The most stringent requirements seen may be for the Coast Guard where ships require 10 or less.


FLAME SPREAD
The flame spread index of the material is derived by plotting the progression of the flame front on a time-distance scale, ignoring any flame front recession, and using one of the calculation methods described below:
 
CLASS
FLAME SPREAD
A. Flame Spread Index = 0.515 At when At is less than or equal to 97.5 minute-foot
B. Flame Spread Index = 4900/(195-At) when At is greater than 97.5 minute-foot
Where At = total area under the time distance curve expressed in minute-foot.
A
B
C
0-25
26-75
76-100
Class A is the desired rating. A class material can be used in any room of a building, ship, or even airplanes.
B & C can still be widely used in all areas except the hallways leading to exits.

SMOKE DEVELOPMENT

The smoke developed during the test is indicated by the output of a photoelectric circuit operating across the furnace flue pipe. A curve is developed by plotting values of light absorption (decrease in cell output) against time. The calculated value for smoke developed index is derived by expressing the net area under the curve for this material as the percentage of the area under the curve for untreated red oak. The smoke developed index value is expressed as:

FLAME DISTANCE

The maximum distance the flame spreads along the length of the sample from the end of the igniting flame is determined by observation.

TEST RESULTS
Product
Test Substrate
Flame Spread
Smoke Dev.
Flame Distance
(feet)(seconds)
Classification
(A, B, C)
DMiBOP10/DMiBOP10RG Rods & Wire 5 5.2
1 0:25
A
DMTB9 Rods & Wire 7.4 102.5
1.5 0:34
A
DMPB10 Rods & Wire 29.8 55.1
6 0:26
B
DMVB15/DMVB15RG Rods & Wire 54.2 355.8
1 0:59
B
DMPPM7 Rods & Wire 50 195
10 1:19
B
DMVLA5 IRC Board 4.1 1.6
0.5 0:21
A
DMCVH20 Rods & Wire 19.5 4.2
4 0:45
A
DMCVM17UV Rods & Wire 15 15
3 0:41
A
DMPC16 Roll Fire Retardant Coating - complies with NFPA 701, ASTM E84, Calif. Stds
FAB-6 Rods & Wire 15 10
3 0:19
A
DMWF4 Rods & Wire 10.2 25.6
2 0:12
A
DMVB14 Rods & Wire 25250
5.5 0:30
A
DMBPC12 Rods & Wire 55
1 0:27
A





MAGIC® TECHNICAL BULLETIN
FIRE TESTING ON MAGIC® DISPLAY MEDIA
magic
Magic® wallcovering products were tested following ASTM E84 Tunnel Test for Surface Burning Characteristics of Building materials. The purpose is to ensure that materials used inside buildings are not highly flammable or cause poisonous smoke. Inorganic Rain Forest Cement Boards or Gypsum Wallboards were used as mounting substrates. Standard wallcovering pastes were used for mounting. Commercial areas require a flame spread of 25 or less. The most stringent requirements seen may be for the Coast Guard where ships require 10 or less. Wallpaper is typically 15-25. Smoke development should be 50 or less.


FLAME SPREAD

The flame spread index of the material is derived by plotting the progression of the flame front on a time-distance scale, ignoring any flame front recession, and using one of the calculation methods described below:
 
CLASS
FLAME SPREAD
A. Flame Spread Index = 0.515 At when At is less than or equal to 97.5 minute-foot
B. Flame Spread Index = 4900/(195-At) when At is greater than 97.5 minute-foot
Where At = total area under the time distance curve expressed in minute-foot.
A
B
C
0-25
26-75
76-100
Class A is the desired rating. A class material can be used in any room of a building, ship, or even airplanes.
B & C can still be widely used in all areas except the hallways leading to exits.


SMOKE DEVELOPMENT
The smoke developed during the test is indicated by the output of a photoelectric circuit operating across the furnace flue pipe. A curve is developed by plotting values of light absorption (decrease in cell output) against time. The calculated value for smoke developed index is derived by expressing the net area under the curve for this material as the percentage of the area under the curve for untreated red oak. The smoke developed index value is expressed as:

FLAME DISTANCE
The maximum distance the flame spreads along the length of the sample from the end of the igniting flame is determined by observation.

TEST RESULTS
Product
Test Substrate
Flame Spread
Smoke Dev.
Flame Distance
(feet)(seconds)
Classification
(A, B, C)
GFIOP140 Cement Board
5/8″ Gypsum/Liq Lam
0
20
3
5
1
4
6:40
0:36
A
A
GFIOP212 Cement Board
5/8″ Gypsum/Liq Lam
0
20
5
5
1
4.1
6:35
1:02
A
A
GFTRP Cement Board
5/8″ Gypsum/Liq Lam
0
25
3
4
0
5
0:37
1:00
A
A
DMiBOP10 5/8″ Gypsum
5/8″ Gypsum/Liq Lam
5/8″ Gypsum/DMFTP
20
45
15
20
10
5
4
9.6
2.96
0:36
1:03
1:23
A
B
A
DMXWPR
DMXDFII/DMXWPRII
DMXDFII/DMXWPRIII
0.5″ Gypsum
5/8″ Gypsum
5/8″ Gypsum
20
15
30
10
10
20
4
3.4
6.06
0:46
1:15
1:27
A
A
B
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