Cover Rubber Grade for Conveyor Belt
| Standards | Cover Rubber | Adhesion | ||||
| Tensile Strength | Elongation at break | Abrasion | Cover to Ply N/mm | Cover to Ply N/mm | Ply to Ply | |
| DIN 22102 | Mpa | % | mm3 | (≤1.5mm) | (>1.5mm) | N/mm |
| DIN 22102-Z | 15 | 350 | 250 | 3.5 | 4.5 | 5 |
| DIN 22102-W | 18 | 400 | 90 | 3.5 | 4.5 | 5 |
| DIN 22102-Y | 20 | 400 | 150 | 3.5 | 4.5 | 5 |
| DIN 22102-X | 25 | 450 | 120 | 3.5 | 4.5 | 5 |
| Standards | Cover Rubber | Adhesion | ||||
| Tensile Strength | Elongation at break | Abrasion | Cover to Ply N/mm | Cover to Ply N/mm | Ply to Ply | |
| AS 1332 | Mpa | % | mm3 | (≤1.9mm) | (>1.9mm) | N/mm |
| AS 1332-N | 17 | 400 | 200 | 4 | 4.8 | 6 |
| AS 1332-M | 24 | 450 | 125 | 4 | 4.8 | 6 |
| AS 1332-E | 14 | 300 | 250 | 4 | 4.8 | 6 |
| AS 1332-A | 17 | 400 | 70 | 4 | 4.8 | 6 |
| Standards | Cover Rubber | Adhesion | ||||
| Tensile Strength | Elongation at break | Abrasion | Cover to Ply N/mm | Cover to Ply N/mm | Ply to Ply | |
| SANS 1173 | Mpa | % | mm3 | N/mm | N/mm | |
| A | 18 | 400 | 70 | 5 | 7 | |
| C | 20 | 400 | 150 | 5 | 7 | |
| M | 25 | 450 | 120 | 5 | 7 | |
| N | 17 | 400 | 150 | 5 | 7 | |
| Standards | Cover Rubber | Adhesion | ||||
| Tensile Strength | Elongation at break | Abrasion | Cover to Ply N/mm | Cover to Ply N/mm | Ply to Ply | |
| RMA | Mpa | % | mm3 | (≤1.6mm) | (>1.6mm) | N/mm |
| RMA-I | 17 | 400 | 3 | 4.4 | 4 | |
| RMA-II | 14 | 400 | 3 | 4.4 | 4 | |
EP/Polyester Rubber Conveyor Belt
EP conveyor belts,whose tension resistant body is canvas woven by polyester in warp and nylon-66 in weft.
The belts have the characteristics of low elongation in warp and good troughability in weft,good water resistance,good wet strength,no mould, suitable for medium,long-distance and heavy-load transportation of materials. Because of the high initial modulus of polyester,the belts can choose a relative low safety factor.
Specification and technical data of multi-ply polyester conveyor belt
| Fabric type | Fabric structure | Fabric | Ply thickness (mm/P) | Strength series(N/mm) | Cover thickness (mm) | Width | Length | ||||||
| Warp | Weft | Specs | 2ply | 3ply | 4ply | 5ply | 6ply | Upper | Lower | mm | m | ||
| EP | Polyester | Polyamide | EP-80 | 0.8 | 160 | 240 | 320 | 400 | 480 | 2.0~8 | 0~4.5 | 400~500 | <=500 |
| EP-100 | 0.8 | 200 | 300 | 400 | 500 | 600 | |||||||
| EP-125 | 0.85 | 250 | 375 | 500 | 625 | 750 | |||||||
| EP-150 | 0.9 | 300 | 450 | 600 | 750 | 900 | |||||||
| EP-160 | 0.9 | 320 | 480 | 640 | 800 | 960 | 500~2500 | ||||||
| EP-200 | 1.05 | 400 | 600 | 800 | 1000 | 1200 | |||||||
| EP-250 | 1.25 | 500 | 750 | 1000 | 1250 | 1500 | |||||||
| EP-300 | 1.35 | 600 | 900 | 1200 | 1500 | 1800 | |||||||
| EP-350 | 1.5 | 700 | 1050 | 1400 | 1750 | 2100 | 600~2500 | ||||||
| EP-400 | 1.8 | – | – | 1600 | 2000 | 2400 | 600~2500 | ||||||
| EP-500 | 2 | – | – | 2000 | 2500 | 3000 | |||||||
Adhesion and elongation of the belt
| Belt carcass | Adhesive strength | Elongation | |||
| Between plies N/mm | N/mm Between ruber and carcass | Longitudinal elongation at break %>= | Longitudinal elongationa at reference load %<= | ||
| Rubber thickness <= 1.5mm | Rubber thickness > 1.5mm | ||||
| EP canvas | >=4.5 | >=3.2 | >=3.5 | 10 | 4 |
Cover properties of the belts
| Cover grade | Tensile strength >= | Elongation >= | Abrasion <= | Change Rate of tensile strength and elongation after aging | |
| Mpa | kgf/cm2 | % | mm3 | % | |
| Heavy(H) | 24 | 240 | 450 | 120 | -25~+25 |
| Medium(M) | 18 | 180 | 400 | 100 | -25~+25 |
| Light(L) | 15 | 150 | 350 | 200 | -30~+30 |
NN/Nylon Rubber Conveyor Belt
Nylon is one of the best quality synthetic fibers the rubber industry use nowadays. The nylon canvas is woven by nylon fibers both in warp and in weft, it is the most widely used fabric in rubber industry,and its outstanding merits are its high abrasion resistance,high tensile strength and good fatigue resistance.Conveyor belts with nylon canvas inside have the characteristics of thin belt body,high tensile strength,good shock resistance,good troughability,high adhesion between plies,splendid flexibility and long working life. Nylon conveyor belts are suitable for medium,long-distance and heavy-load transportation of materials,widely used in mining ,metallurgical industry and architectural industry,ports and etc.
Cover properties of the belts
| Fabric type | Fabric structure | Fabric | Ply thickness (mm/P) | Strength series(N/mm) | Cover thickness (mm) | Width | Length | ||||||
| Warp | Weft | Specs | 2ply | 3ply | 4ply | 5ply | 6ply | Upper | Lower | mm | m | ||
| Nylon (NN) | Nylon (N) | Nylon (N) | NN-100 | 0.7 | 200 | 300 | 400 | 500 | 600 | 1.5-8 | 0-4.5 | 400-2500 | <=300 |
| NN-125 | 0.75 | 250 | 375 | 500 | 625 | 750 | |||||||
| NN-150 | 0.8 | 300 | 450 | 600 | 750 | 900 | |||||||
| NN-200 | 0.9 | 400 | 600 | 800 | 1000 | 1200 | 500-2500 | ||||||
| NN-250 | 1.1 | 500 | 750 | 1000 | 1250 | 1500 | |||||||
| NN-300 | 1.25 | – | 900 | 1200 | 1500 | 1800 | |||||||
| NN-350 | 1.35 | – | 1050 | 1400 | 1750 | 2100 | 800-2500 | ||||||
| NN-400 | 1.7 | – | – | 1600 | 2000 | 2400 | |||||||
| NN-500 | 1.8 | – | – | 2000 | 2500 | 3000 | |||||||
Adhesion and elongation of the belt
| Belt carcass | Adhesive strength | Elongation | |||
| Between plies N/mm | N/mm Between ruber and carcass | Longitudinal elongation at break %>= | Longitudinal elongationa at reference load %<= | ||
| Rubber thickness <= 1.5mm | Rubber thickness > 1.5mm | ||||
| Nylon canvas | >=4.5 | >=3.2 | >=3.5 | 10 | 4 |
Cover properties of the belts
| Cover grade | Tensile strength >= | Elongation >= | Abrasion <= | Change Rate of tensile strength and elongation after aging | |
| Mpa | kgf/cm2 | % | mm3 | % | |
| Heavy(H) | 24 | 240 | 450 | 120 | -25~+25 |
| Medium(M) | 18 | 180 | 400 | 100 | -25~+25 |
| Light(L) | 15 | 150 | 350 | 200 | -30~+30 |