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Rubber Promotion Belt

Rubber promotion belt is multi-layer silica gel fabric folded with cover rubber outside the belt core. It can be classified in heat-resistant lifting belt and common lifting belt as per application temperature while can be classified in full-cotton, Dacron and cotton, nylon and EP lifting belt as per core material.
1.Physical properties and level of cover rubber.
It can be divided as type D for heavy-wear, type L for middle-wear and type T for high-temperature material conveyance as per wear and load of material.
2.Wide specification of lifting belt: 150 200 250 300 350 400 500 600mm etc
3.Technical requirement of lifting belt.









1. Physical property of cover rubber is as below:

Item

Index

 

Type D

Type L

Tensile strength   Mpa≥

18.0

15.0

Tensile yield  %≥

400

350

Hot-air aging

Tensile strength variation%

-25-25

70℃x7d

Tensile yield variation%

Abrasion value cm3

0.7

0.8

Remarks:Physical property of cover rubber will depend on if lift special material or acute wear material.
1.Cover rubber property of heat-resistant belt (T type) should accord with HG/T2297 (heat-resistant belt) standard.
2.Longitudinal tensile strength of belt should not lower than nominal value below: 100/ 125 /160/ 200 /250/ 315/ 400 /500N/mm .
3.Tensile yield of belt longitudinal thickness should not lower than 10% and reference elongation should not more than 4%.
4.Bond strength between layers of lifting belt with fabric core is listed as below: N/mm.

Fabric class and item

Between layers

Between cover and cloth layer

Thickness of cover

Thickness of cover

100% Nylon fabric

Average of longitudinal test≥

5.25

3.15

4.50

Minimum of longitudinal test≥

3.85

2.40

2.85

100% other synthetic fabrics

Average of longitudinal test≥

4.50

3.15

3.50

Minimum of longitudinal test≥

3.85

2.40

2.85

Cotton canvas

Average of longitudinal test≥

3.00

2.20

2.60

Minimum of longitudinal test≥

1.95

1.60

1.95

Other natural fabric

Average of longitudinal test≥

3.15

2.35

2.80

Minimum of longitudinal test≥

2.70

1.60

2.20


Remarks:
Bond strength between layers of heat-resistant conveyer belt with fabric core should accord with HG/T2297 standard.

 

 
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