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The overall core flame-retardant conveyor belt (PVC-PVG) is mainly used in underground coal mines. Features of this belt: the belt body does not delaminate, small elongation, impact resistance, and tear resistance. According to different structures, it can be divided into PVC type (plastic surface) and PVG type (rubber surface added on the basis of PVC) full-core flame-retardant belts, implementing the MT914-2002 standard.
(1) PVC flame-retardant conveyor belts are suitable for material conveying under dry conditions with an inclination angle of less than 16 degrees.
(2) PVG flame-retardant conveyor belts are suitable for conveying wet materials with an inclination angle of less than 20 degrees.
1. Model N/mm (tensile strength):
| Level | Level 4 | Level 5 | Level 6 | Level 7 | Level 8 | Level 9 | Level 10 |
| Model | 680s | 800s | 1000s | 1250s | 1400s | 1600s | 1800s |
2. Flame-retardant performance:
(1) Roller abrasion: The surface temperature of the roller is not more than 325℃.
(2) Blowtorch burning: The average flameless time of the full-thickness specimen without a blowtorch is not more than 3.0S, and the average flameless time of the covering layer is not more than 5.0S.
(3) Propane burning: The undamaged length is greater than 250mm
3. Surface resistance value:
The average value of the upper and lower surfaces is not more than 3.0 × 108Ω
4. Performance:
This conveyor belt has passed flame-retardant tests and electrostatic tests and has obtained a qualified certificate, coal mine safety mark, and customer recognition.
5. Mechanical properties:
Excellent mechanical properties, providing users with a longer service life and economical installation and use.
Service life: The service life of the belt is determined by the following factors: the warp and weft long filaments and the densely woven covering cotton core; the specially formulated PVC material makes the core and cover rubber achieve high bonding strength; specially formulated cover rubber; thus making the belt impact-resistant, tear-resistant, and wear-resistant.
This product has excellent properties such as wear resistance, anti-static, waterproof, flame retardancy, and high strength of the full-core flame-retardant belt, and is more cost-effective and cheaper than other flame-retardant conveyor belts. It is one of the more common and popular flame-retardant conveyor belt varieties at home and abroad, especially suitable for underground conveying places with small slopes such as coal mines.
6. Product structure:
This product uses a whole core as the skeleton material, and is made by impregnation and coating with PVC materials with anti-static and flame-retardant properties.
7. Joint performance:
According to the belt strength and core structure, mechanical buckle connection is used, and its strength can reach 50%-100% of the belt strength; vulcanized joints are used, and their strength can reach 60%-100% of the belt strength. Various types of joints can meet the different needs of customers and ensure the safe and efficient operation of the system.
| Average surface resistance | ≤3×108Ω |
| Roller friction performance | Permissible higher temperature ≤325℃, and no flaming or flameless combustion is required. |
| Alcohol blowtorch burning test | Average value ≤3S (with covering layer), single value ≤10S (with covering layer) Average value ≤5S (without covering layer), single value ≤15S (without covering layer) |
| Propane roadway combustion performance | Unburned retained segment length >250mm |
| High-energy roadway propane combustion test | Full-width undamaged length segment >2250 |
| Product specifications | Tensile strength (N/mm) | Elongation at break (%) | Tear strength (N) ≥ | ||
| Longitudinal ≥ | Transverse ≥ | Longitudinal ≥ | Transverse ≥ | ||
| 680S | 680 | 265 | 15 | 18 | 1090 |
| 800S | 800 | 280 | 15 | 18 | 1180 |
| 1000S | 1000 | 300 | 15 | 18 | 1180 |
Production Capacity
FAQ
Can you accept small quantities?
Yes, small batches are accepted, and delivery is fast
Do you have a pre-shipment inspection procedure?
Yes, we always test the product before delivery.
Can I take a sample for testing?
Yes, samples can be sent for testing before bulk orders.
What is the delivery time?
Inventory orders take 7-15 days, while OEM and ODM orders depend on the specific circumstances.
Fire-resistant conveyor belt for power plants
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