MAGIC® TECHNICAL BULLETIN
FIRE TESTING ON MAGIC® DISPLAY MEDIA
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 |
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:
- Smoke developed index = (Am-Aro) x 100
- Where: Am = The area under the curve for the test material
- Aro = The area under the curve for untreated red oak
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 |
Classification
| ||
| DMiBOP10/DMiBOP10RG | Rods & Wire | 5 | 5.2 |
|
A | ||
| DMTB9 | Rods & Wire | 7.4 | 102.5 |
|
A | ||
| DMPB10 | Rods & Wire | 29.8 | 55.1 |
|
B | ||
| DMVB15/DMVB15RG | Rods & Wire | 54.2 | 355.8 |
|
B | ||
| DMPPM7 | Rods & Wire | 50 | 195 |
|
B | ||
| DMVLA5 | IRC Board | 4.1 | 1.6 |
|
A | ||
| DMCVH20 | Rods & Wire | 19.5 | 4.2 |
|
A | ||
| DMCVM17UV | Rods & Wire | 15 | 15 |
|
A | ||
| DMPC16 | Roll | Fire Retardant Coating - complies with NFPA 701, ASTM E84, Calif. Stds | |||||
| FAB-6 | Rods & Wire | 15 | 10 |
|
A | ||
| DMWF4 | Rods & Wire | 10.2 | 25.6 |
|
A | ||
| DMVB14 | Rods & Wire | 25 | 250 |
|
A | ||
| DMBPC12 | Rods & Wire | 5 | 5 |
|
A | ||
MAGIC® TECHNICAL BULLETIN
FIRE TESTING ON MAGIC® DISPLAY MEDIA
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:
- Smoke developed index = (Am-Aro) x 100
- Where: Am = The area under the curve for the test material
- Aro = The area under the curve for untreated red oak
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 |
Classification | ||
| GFIOP140 | Cement Board 5/8″ Gypsum/Liq Lam |
0 20 |
3 5 |
|
A A | ||
| GFIOP212 | Cement Board 5/8″ Gypsum/Liq Lam |
0 20 |
5 5 |
|
A A | ||
| GFTRP | Cement Board 5/8″ Gypsum/Liq Lam |
0 25 |
3 4 |
|
A A | ||
| DMiBOP10 | 5/8″ Gypsum 5/8″ Gypsum/Liq Lam 5/8″ Gypsum/DMFTP |
20 45 15 |
20 10 5 |
|
A B A | ||
| DMXWPR DMXDFII/DMXWPRII DMXDFII/DMXWPRIII |
0.5″ Gypsum 5/8″ Gypsum 5/8″ Gypsum |
20 15 30 |
10 10 20 |
|
A A B |
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