FABRIC-RUBBER CONVEYOR BELTS
NON INFLAMMABLE
APPLICATION
Non- inflammable rubber fabric conveyor belts are intended for
transport of loose materials in increased fire hazard conditions e.g. for coal transport in coal processing plants on the
surface of mining enterprises or power plant and combined
heat and power plants.
Non- inflammable rubber fabric conveyor belts can convey
materials of any graining but taking into account operational
safety of the conveyor and installed belt it is recommended to
limit maximum diameter of grains of the conveyed material to
300 [mm].
CONSTRUCTION
Non-inflammable rubber fabric conveyor belts consists of
rubber and fabric carcass, with 2-5 plies, rubber covers: carrying and running as well as rubber edges. Layer of interlayer
rubber is located between textile plies.
Non-inflammable rubber fabric conveyor belts are manufactured on the basis of EP (polyester-polyamide) or PP (polyamide-polyamide) textile plies.
Non-inflammable rubber fabric conveyor belts are produced
according to the standards EN ISO 14890 or DIN 22102.
Covers and edges can be manufactured in different classes of
cover rubber acc. to table 1.
Depending of type of the belt, it fulfils the requirements for
safety class 2A, 2B, 3A, 3B acc. to the standard EN 12882.
According to the standard ISO 433 belts has special property:
“K”: non-inflammable with covers acc. to standard ISO 340 or
“S”: non-inflammable with and without covers acc. to
standard IDO 340
All manufactured types of non- inflammable belts are also
anti-electrostatic.
FABRIC-RUBBER CONVEYOR BELTS NON INFLAMMABLE
p. 1/5
FABRIC-RUBBER CONVEYOR BELTS NON INFLAMMABLE
MARKING OF BELT DURING ORDERING ACCORDING TO THE STANDARD EN ISO 14890
14890
450
where:
execution according to the standard
length of the belt in [m]
width of the belt in [mm]
material of plies
tensile strength (belt type) in [N/mm]
number of plies in carcass
thickness of rubber covers: carrying (S 1) and running (S 2) in [mm]
marking of type of belts (liner rubber class and special property of the belt)
safety class according to EN 12882
1000
EP
800
4
6+2
LK
2A
MARKING OF BELT DURING ORDERING ACCORDING TO THE STANDARD DIN 22102
DIN 22102 - 1000 where:
execution according to the standard
width of the belt in [mm]
material of plies
tensile strength (belt type) in [N/mm]
number of plies in carcass
thickness of rubber covers: carrying (S1) and running (S2) in [mm]
marking of cover rubber class
special property of the belt acc. to DIN 22102
EP -
800 / 4
6/2
Y
S
TABLE 1. Physical-mechanical properties of cover rubber of non- inflammable rubber fabric conveyor belts
Requirements for cover rubber of non- inflammable belts
Parameter
Unit
Acc. to EN ISO 14890
Acc. to DIN 22102
Method of testing1
H
D
L
Y
Z
Tensile strength, min.
TS
[MPa]
24
18
15
20
15
ISO 37 (sample type 2)
Elongation at break, min.
Eb
[%]
450
400
350
400
350
ISO 37 (sample type 2)
[mm3]
120
100
200
150
200
ISO 4649 (method A)
Abrasion resistance, max.
Accelerated thermal ageing resistance, in
air, for the following conditions:
+70 [°C] after 168 [h.], max.
1
TS
Eb
[%]
[%]
25
25
ISO 188 (method B)
ISO 37 (sample type 2)
Tests carried out according to the current issues of the standards
FABRIC-RUBBER CONVEYOR BELTS NON INFLAMMABLE
p. 2/5
FABRIC-RUBBER CONVEYOR BELTS NON INFLAMMABLE
BELT THICKNESS
Approximated thickness of non- inflammable rubber fabric conveyor belt carcass is presented in the TABLE 2.
Approx. total thickness of the belt with any thickness of the covers can be calculated using the formula:
S = S3+ (S1 + S2)
where:
S – approximate total thickness of belt [mm]
S3 – thickness of the belt carcass taken from TABLE 2 [mm]
S1 – thickness of carrying cover [mm], minimum value S1 is equal to 2 [mm]
S2 – thickness of running cover [mm], minimum value S2 is equal to 2 [mm]
TABLE 2. Range of manufactured types of belts, basic widths, weights and thickness of carcass of
non- inflammable rubber fabric conveyor belt.
Belt
type/number
of plies
400
500
630
630
800
800
800
1000
1000
1000
1250
1250
1250
1400
1600
1600
1800
1800
2000
2000
2500
2500
1
/3
/3
/3
/4
/3
/4
/5
/3
/4
/5
/3
/4
/5
/4
/4
/5
/4
/5
/4
/5
/4
/5
Basic widths of belt [mm] 1
500
600
650
800
X
X
X
X
X
X
X
-
X
X
X
X
X
X
X
-
X
X
X
X
X
X
X
X
X
X
X
X
X
-
X
X
X
X
X
X
X
X
X
X
X
X
X
X
-
1000
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
-
1200
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1400
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1600
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1800
Approx. weight of carcass [kg/m 2]
Max. thickness of carcass S 3
[mm]
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
EP
4,2
4,2
5,1
5,6
5,7
6,8
7,0
6,0
7,6
8,5
6,9
8,0
9,5
8,4
9,2
10,0
9,6
10,5
9,6
11,5
12,8
13,0
PP
4,8
5,4
6,4
5,7
6,8
8,0
6,3
7,2
8,5
7,6
8,4
9,5
10,4
10,5
10,4
10,5
11,2
13,0
EP
PP
Safety class EN 12882 / special property
acc. to DIN 22102
2A, 3A / K
2B, 3B / S
6,1
6,0
6,1
6,0
6,6
6,5
8,1
8,0
7,0
6,9
8,8
8,6
10,2
10,0
7,7
7,7
9,4
9,3
10,9
10,8
8,8
8,7
10,3
10,2
11,7
11,6
10,9
10,8
11,7
11,6
12,9
12,7
12,3
12,0
13,7
13,5
12,3
12,0
14,7
14,5
15,7
15,6
16,3
16,2
Safety class EN 12882 / special
property acc. to DIN 22102
2A, 3A / K
2B, 3B / S
6,3
6,2
6,7
6,6
8,4
8,3
7,2
7,1
8,6
8,5
10,5
10,4
8,0
7,9
9,0
8,9
10,8
10,7
9,6
9,4
10,6
10,5
12,0
11,8
12,2
12,0
13,3
13,1
12,2
12,0
13,3
13,1
13,5
13,4
15,2
15,0
Widths and types of the belt other than specified in Table 2 to be agreed with the manufacturer.
BELT WEIGHT
Approximated weights of non-inflammable rubber fabric
conveyor belt carcass are presented in the TABLE 2.
Approximated weight of belt with covers of any width
can be obtained from the formula:
M = m1 + X*( S1 + S2)
where:
M – approximated weight of the belt [kg/m2]m1 –
weight of belt carcass taken from the TABLE 2 for the
given type of belt [kg/m2]
S1 – thickness of carrying cover [mm], minimum value
S1 is equal to 2 [mm]
S2 – thickness of running cover [mm], minimum value
S2 is equal to 2 [mm]
X – value depending of type of belt and equal to:
- for cover rubber class H - 1,39 [g/cm3]
- for cover rubber class D - 1,36 [g/cm3]
- for cover rubber class L and Z - 1,29 [g/cm3]
- for cover rubber class Y - 1,24 [g/cm3]
FFABRIC-RUBBER CONVEYOR BELTS NON INFLAMMABLE
p. 3/5
FABRIC-RUBBER CONVEYOR BELTS NON INFLAMMABLE
MINIMUM PULLEY DIAMETERS – acc. to TABLE 3
The recommended minimum pulley diameters [mm], determined according to the standard DIN 22101 for the following pulleys, are
presented in the TABLE 3:
A – drive pulleys and other pulleys in the range of high belt tensions
B – deflection pulleys and other pulleys in the range of low belt tensions
C – snub pulleys (change in belt moving direction ≤ 30°)
TABLE 3. Minimum pulley diameters [mm]
Belt type/number
of liners
400 /3
500 /3
630 /3
630 /4
800 /3
800 /4
800 /5
1000 /3
1000 /4
1000 /5
1250 /3
1250 /4
1250 /5
1400 /4
1600 /4
1600 /5
1800 /4
1800 /5
2000 /4
2000 /5
2500 /4
2500 /5
A
400
400
500
630
630
800
800
630
800
1000
800
800
1000
1000
1000
1250
1000
1250
1000
1250
1400
1400
EP carcass
B
315
315
400
500
500
630
630
500
630
800
630
630
800
800
800
1000
800
1000
800
1000
1250
1250
C
250
250
315
400
400
500
500
400
500
630
500
500
630
630
630
800
630
800
630
800
1000
1000
A
400
500
630
500
630
800
630
630
800
630
800
800
1000
1000
1000
1000
1250
1400
PP carcass
B
315
400
500
400
500
630
500
500
630
500
630
630
800
800
800
800
1000
1250
C
250
315
400
315
400
500
400
400
500
400
500
500
630
630
630
630
800
1000
MARKING OF BELTS
1÷3 [m] from the beginning and end of the belt, and every 15 [m] according to the standard EN ISO 14890 or approx. every 10 [m]
acc. to DIN 22102, a permanent mark will be made in form of relief impression in rubber, containing the required information according to the standard EN ISO 14890 or DIN 22102 and placed as a standard on the carrying cover of the belt.
Permanent marking should include the following information:
- acc. to EN ISO 14890: name (mark) of manufacturer, name of standard, type of textile, belt type, number of plies, rubber class,
safety class, manufacturer’s number of belt, two digits of manufacturing year.
- acc. to DIN 22102: name (mark) of manufacturer, number of standard, type of textile, belt type, number of plies, special property
of belt, manufacturer’s number of belt, two digits of manufacturing year.
PACKAGING
Belt is winded up on wooden coils with diameter 450 [mm], with square opening in the centre, with length of the opening’s side
230 [mm]. Rolled up belt is protected against unwinding during transport by clamping using polypropylene strip.
FABRIC-RUBBER CONVEYOR BELTS, GENERAL PURPOSE
p. 4/5
FABRIC-RUBBER CONVEYOR BELTS NON INFLAMMABLE
DIAMETER OF WOUND
Approximated diameter of belt reel D [m] of length L [m], thickness S [mm] can be obtained using the formula:
TABLE 4. Physical and mechanical parameters of non- inflammable rubber fabric conveyor belt
are presented in the TABLE 2.
Parameter
Unit of
measure
a/ Longitudinal tensile strength, min.
b/ elongation under load equal to 10 [%] of
nominal strength of the belt, max.
[N/mm]
2A, K
2B, S
3A
3B
EP
PP
c/ elongation at break, min.
d/ adhesion strength:
- average value of test results between textile plies, min.
- average value of test results between covers and carcass,
min.
e/ Change of average adhesion strength of belt after
o
accelerated thermal ageing, in air, in conditions: -70 [ C] x
168 [h]:
- between plies, max.
- between covers and carcass, max.
f/ Combustion times determined by flame method:
- total combustion time of each group of six samples with
covers, shorter than:
- maximum combustion time of single sample with covers
g/ Combustion times determined by flame method:
- total combustion time of each group of six samples
without covers, shorter than:
- maximum combustion time of single sample without
covers
h/ Drum friction test, method A1
i/ Electric resistance of belt, max.
Safety class acc. to EN ISO 14890 or special
property of the belt acc. to DIN 22102
Belt type
400
500
630
800
1000
1250
1400
1600
1800
2000
2500
400
500
630
800
1000
2,5
1250
1400
1600
1800
3,0
2000
2500
1,5
[%]
2A, K
2B, S
3A
3B
Method
of Testing
acc. to1
EN ISO 283
4
[%]
2A, K
2B, S
3A
3B
10
[N/mm]
2A, K
2B, S
3A
3B
5,0
EN ISO 252 (method A)
4,5
ISO 188 (method B)
EN ISO 252 (method A)
[%]
2A, K
2B, S
3A
3B
2A, K
2B, S
3A
3B
- 25
- 25
EN ISO 340
45
[s]
15
-
2B, S
-
3B
-
-
-
3A
3B
15
No flame
[ ]
2A, K
2A
2A
K
2B, S
2B
2B
S
3A
3A
3A
-
3B
3B
3B
-
3 x 10
-25
-40
-40
Rubber class H
Rubber class L, D
[ C]
Rubber class Y, Z
1
Tests carried out according to the current issues of the standards
j/ Low temperature resistance
45
8
EN 1554 (Method A1)
EN ISO 284
PN-72/C-05011.06
PROCEDURE FOR USED PRODUCTS
Recovery of used products through e.g. combustion or bulk storage in the yard with non-hazard or neutral wastes shall
be applied.
LUFH VENEZUELA
Email: nsaado@lufh-cbs.com
Address: Calle Neverí, Hotel Mara Inn, Nivel
Galería, Local #14, Puerto Ordaz,
Estado Bolívar, Venezuela.
Phone: +58(426)590-7012
+58(286)951-2467
+1 (786) 420-9934
LUFH UNITED STATES OF AMERICA
Email: sales@lufh-cbs.com
Address: 3508 NW 114 Ave, Doral,
FL 33178, USA.
Phone: +1 (786) 439-2905
+1 (786) 543-4204
Fax: +1 (305) 393-8421
LUFH UNITED ARAB EMIRATES
Email: lparedes@lufh-cbs.com
Address: Po box 16686, Ras Al Khaimah, UAE.
Phone: +1 (786) 543-4204
+971 (55) 157-3826
FABRIC-RUBBER CONVEYOR BELTS, GENERAL PURPOSE
p. 5/5