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 Application: |
When belts are used in places not easily accessible, it is very important that fire risks be eliminated if possible. Two kins of fire resistant belts are manufactured: on a specially treated notural, S.B.R. rubber and the other a chloroperene belt. Nylon, Polyester Aramid belt, steel cord belt can be used for these belts.
Flame Duration Time:
To a flame at 1000+ 100oC, a belt test specimen of full thickness shall be inserted against flame, as per drawing, and after keeping it burn for 1 minute, take the burner off, then measure the flame duration time of the test specimen.
Flame Reapperance Test:
After 60+ 10 seconds from when the burner is removed for the flame duration test, air is blown at a speed of 1.5m/sec. with an air blower from the direction shown in the figure to the left. And the test specimen shall be visually inspected for reappearance of flame.
Anti-static Test:
When tested in accordance, each of the averages shall not exceed 3x108
Drum Friction Test:
For each test conducted, the belting shall show no sign of flame (sparks or glow not being objectionable), the drum temperature shall not exceed 325oC, and the sample shall part within the 3 h test period. |
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| Type of fire resistant conveyor belt: |
| Type |
Applicable standard |
Specified item for test |
Duration of
flame |
Reapperance of flame |
Requirement |
| FR-500 |
CNS
JIS |
Flame duration time per "Flame Test with Cover Rubber" |
Within 60 Seconds
(Average of 3 pcs.) |
Not permitted. |
Extinguishes as the flame s removed. Reignition of fire by air-blow should not occur |
| FER-514 |
BS
AS
IS
SABS |
Duration time of Flame and Glow per "Flame Test with Cover Rubber" Whether or not there is heat generation and fire ignition per "Drum Friction Test" "Electric resistance on belt surface" |
Less than 45 sec. (A total of six)
Less than 15 sec.
(each test) |
| EMR |
Duration time of Flame and Glow per "Flame Test with Cover Rubber" Whether or not there is heat generation and fire ignition per "Drum Friction Test" |
| MSHA |
Duration time of Flame and Glow per "Flame Test with Cover Rubber" |
ISO
DIN
NF |
Flame duration time per "Flame Test with and without Cover Rubber" "Electric resistance on belt surface" |
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| Rubber |
Composition |
Application |
| FOER |
Fire Resistant + Oil Resistant |
Cover rubber with high conductivity, applied to materials with static on its surface, or materials that have fire risk by spark or glow.
For example coal, wood etc. |
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