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Detailed introduction
Nylon conveyor belt national standard
Release time:
2020-09-17
Purpose: Suitable for conveying materials under medium and long distance, high load capacity and high speed conditions. Features: 1. The belt has good elasticity, impact resistance and abrasion resistance.
Nylon conveyor belt national standard
|
Purpose: Suitable for conveying materials under medium and long distance, high load capacity and high speed conditions.
Features: 1. The belt has good elasticity, impact resistance and abrasion resistance.
2. Good flexibility and easy to groove.
3. No mildew occurs.
4. Meet the national standard GB7984-95
Variety: According to the performance of the covering rubber, it can be divided into ordinary type, heat-resistant type, flame-retardant type, cold-resistant type, acid-base-resistant type, and oil-resistant type.
|
| General purpose cover layer performance level | Codename |
Tensile Strength
not less than
|
Elongation at break % ≥ |
Abrasion mm 3 ≤ |
After 70℃×7h aging,
Tensile strength and elongation at break
Rate of change % |
| MPa | |||||
| Strong scratch type | H | 24.0 | 450 | 120 | -25~+25 |
| Strong wear type | D | 18.0 | 400 | 100 | -25~+25 |
| General type | L | 15.0 | 350 | 200 | -25~+25 |
| ·2. Bonding strength between layers: |
| Index item | Between layers | Between cover layer and cloth layer | |
| Cover thickness≤1.5mm | Cover thickness＞1.5mm | ||
| Average value of longitudinal sample is not less than | 4.50 | 3.2 | 3.50 |
| Average value of transverse sample is not less than | 4.50 | 3.2 | 3.50 |
| The highest peak of all samples is not greater than | 20 | 20 | 20 |
| The lowest peak value of all samples is not less than | 3.9 | 2.40 | 2.9 |
| ·3. Specifications: |
| bandwidth（mm） | Number of layers | Covering rubber thickness（mm） | |
| Working face | Non-working surface | ||
| 400 | 3~4 | 4.5 3.0 | 3.0 1.5 |
| 500 | 3~5 | 4.5 3.0 | 3.0 1.5 |
| 600 | 3~5 | 6.0 4.5 3.0 | 3.0 1.5 |
| 650 | 3~5 | 6.0 4.5 3.0 | 3.0 1.5 |
| 800 | 3~6 | 6.0 4.5 3.0 | 4.5 3.0 1.5 |
| 1000 | 3~7 | 6.0 4.5 3.0 | 4.5 3.0 1.5 |
| 1200 | 4~7 | 6.0 4.5 | 4.5 3.0 1.5 |
| 1400 | 4~7 | 6.0 4.5 | 4.5 3.0 |
| 1600 | 4~7 | 6.0 4.5 | 4.5 3.0 |
| 1800 | 4~7 | 6.0 4.5 | 4.5 3.0 |
| 2000 | 4~7 | 6.0 4.5 | 4.5 3.0 |
| 2200 | 4~7 | 6.0 4.5 | 4.5 3.0 |
|
·Flame-resistant type meets GB10822-89 standard requirements
·1. Physical properties of cover layer:
|
|
Tensile strength of covering layer MPa not less than |
10 |
| Elongation at break of cover layer% not less than | 350 |
| Note: The physical performance requirements of the general flame-retardant belt with the covering layer thickness less than 2.0mm without covering layer |
|
·2. Bonding strength between layers: |
| Index item | Between layers | Between cover layer and cloth layer | |
| Cover thickness≤1.5mm | Cover thickness＞1.5mm | ||
| The average value of all samples is not less than | 5.0 | 3.50 | 3.90 |
| The lowest peak value of all samples is not less than | 3.9 | 2.40 | 2.90 |
| ·3. Safety performance: |
| Flame resistance J | Non-flammable and conductive properties K |
| The average flame duration of the three full-thickness (longitudinal) samples is not more than 60S and there is no re-ignition in any single result | The flame-retardant performance is the same as that of J. Electrostatic conductivity: The surface resistance requirement is not more than 3×10 8 Ω |
Original author: Hangzhou efforts Rubber Products Co., Ltd.
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