Description
Conveyor belts’ self-extinguishing characteristics are measured using a variety of safety classes, international standards, and accompanying tests. Depending on whether a belt is for use above or below ground, and the level of fire danger with respect of the material being transported, test techniques and performance criteria vary greatly. Conveyor belts can’t be completely fire resistant. When a belt is exposed to a naked flame strong enough to ignite it, it will burn. This is due to the fact that the textiles used in the belt’s carcass (most typically polyester and nylon) are combustible and have little or no fire resistance.
DIN EN 12882 specifies a fire and flame resistant rubber conveyor belt for use above ground.
Inflammable and explosive items are transported on this conveyor belt. Coal loading and transportation, coal dust, steel works and foundries, food industries (powders, grain, sugar…), wood industries, aluminum, paper, chemical, and fertilizer industries are all possible applications.
Conveyor belt passes the following tests: resistance to cover burning, antistatic, and drum friction test.
According to DIN EN 14973, a self-extinguishing conveyor belt is designed for use in underground applications.
Conveyor belt designed for use in potentially explosive environments in hazardous installations. Tunnel construction, underground mining, and potentially explosive locations are all possible applications.
Resistance to burning with and without coverings (also skim layer fire resistant), antistatic, drum friction test, and propan burner test are all required for conveyor belts.
Technical data:
Flame retardant conveyor belts test based on EN/ISO 340:
• Anti-static: ≦3×108
• Drum friction: no flame under the condition of 325℃
• Buring test:
A. For individual test samples of fire-resistant conveyor belts, the time it takes to self-extinguish should be no more than 15 seconds.
B. For each group of six test pieces, the maximum cumulative time they take to self-extinguish should be no more than 45 seconds.
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