With a specific rubber compound designed for excellent
static conductidity, usually it is used for application with a high
risk of igniting a fire by static spark, such as paper or textile
mill.
Cover Rubber
Regular
Anti-Static
Electrostatic Resistance
From 3 x 103
x 108
Less than 3 x 108
Flame
Resistant Conveyor Belt
This belt is designed to prevent fire risks in coal mines
where is not easily accessible and to reduce maintenance of
the conveyors.The important characteristic is self-extinguishable
cover rubber and meet drum friction test. It is suitable for
serving in mining industry, power plant, electric utilities,
coal cleaning plants.
Flame
Resistant belt standards by country:
Standard
Laboratory Flame
Test
Drum Friction Test
Electric Resistance
Other Items
Flame
Glow
JIS CNS
Each less than 15 sec. Total of 6 samples less
than 45 sec.
None
None
None
None
ISO DIN
Each less than 15 sec. Total of 6 samples less
than 45 sec.
None
None
Less than 3 x 108
None
MSHA
Avr. less than 60 sec.
Avr. less than 180 sec.
None
Less than 3 x 108
None
AS
Avr. less than 10 sec. Each less than 15 sec.
Avr. less than 120 sec. Each less than 180
sec.
Less than 320oC on drum surface
and no glow
Less than 3 x 108
Oxygen idex test in accod with ISO 4589 gallery
flame test
CSA
Avr. less than 60 sec.
Avr. less than 180 sec.
Less than 400oC on drum surface
and no glow
Less than 3 x 108
None
Chemical
Resistant Conveyor Belt
Application:
According to the nature
of the materials or chemicals, acid-resistant or alkali-resistant
cover rubbers may be selected.
Polymer
Alcohols
Animal Fats
Asphalt Hot
Calcium Sulfide
Chromic Acid
Copper Sulfate
Fatty Acid
Natural Gum
G
NR
NR
G
NR
G
NR
Urethane
NR
G
E
E
NR
E
G
EPDM
G
G
NR
E
F
E
NR
Nitrile
E
G
G
G
NR
E
E
Neoprene
E
G
NR
E
NR
E
G
Butyl
E
G
NR
E
F
E
NR
Rating :
E :Excellent
G: Good
F: Fair
NR: Not Recommende
Polymer
Latex Adhesives
Oxygen
Ozone
Sewage
Soda Ash
Sun Light
Temps Range,oC
Natural Gum
NR
G
G
E
E
F
-30 ~ +120
Urethane
NR
E
E
E
E
E
-30 ~ +120
EPDM
NR
E
E
F
E
G
-10 ~ +200
Nitrile
E
G
NR
E
E
G
-18 ~ +120
Neoprene
G
G
G
G
E
E
-30 ~ +120
Butyl
NR
E
G
NR
E
e
-54 ~ +150
Rating :
E :Excellent
G: Good
F: Fair
NR: Not Recommende
All the informations in this chart have been
gathered from a multitude of resources. Each specific cove formulation
used in individual belt constructions is determined by the materials
to be carried and environment.Accordingly Probelt can not guarantee
the accuracy of the information presented. The chart should
be used as a guide and reference only, since the performance
of any item in this chart could be affected by many factors.In
order to avoid any unexpected results, please make an enquiry
before a decision-making.
x 108