The all-plied flame-retardant conveyor belt (PVC-PVG) is primarily used in underground coal mines. Key features of this belt include: no delamination of the belt body, minimal elongation, excellent impact resistance, and superior tear resistance. Depending on the specific construction, it can be categorized into PVC-type (with a plastic surface) and PVG-type (featuring an additional rubber surface bonded onto the PVC base), both conforming to the MT914-2002 standard.
(1) PVC flame-retardant conveyor belts are suitable for material transportation under dry conditions with an inclination angle of 16 degrees or less.
(2) PVG flame-retardant conveyor belts are suitable for conveying moist, water-containing materials at inclinations of 20 degrees or less.

1. Model N/mm (Tensile Strength):

2. Flame-retardant Performance:
(1) Roller mill temperature: The roller surface temperature shall not exceed 325°C.
(2) Burner test: For full-thickness specimens, the average time without flame exposure to the burner should not exceed 3.0 seconds, while for specimens with a covering layer, the average time should not exceed 5.0 seconds.
(3) Propane combustion: Non-destructive length exceeds 250 mm

3. Surface Resistance Value:
The average values of the upper and lower surfaces shall not exceed 3.0 × 10⁸ Ω.

4. Performance:
The conveyor belt has successfully passed tests such as flame-retardant and anti-static assessments, earning both the Coal Safety Certification Mark and high praise from customers.

5. Mechanical Properties:
The mechanical performance is excellent, providing users with long service life and cost-effective installation and usage.
Service Life: The service life of the belt is determined by several key factors: a dense core woven tightly from warp and weft filaments along with covering cotton yarn; a specially formulated PVC compound that ensures high adhesion strength between the core and the cover rubber; and the unique formulation of the cover rubber itself. These features collectively make the belt highly resistant to impact, tear, and abrasion.
This product features an all-core design with excellent properties such as wear resistance, antistatic performance, water resistance, flame retardancy, and high tensile strength. Additionally, it boasts lower costs and more affordable pricing compared to other flame-retardant conveyor belts. As a result, it has become one of the most widely used and popular flame-retardant conveyor belt varieties both domestically and internationally—particularly well-suited for underground conveying applications in coal mines and other environments with relatively gentle inclines.

6. Product Structure:
This product uses an integral core as its skeletal material, which is then plasticized after being impregnated and coated with PVC material possessing antistatic and flame-retardant properties.

7. Joint Performance:
Based on the belt body strength and core structure, mechanical fasteners can achieve 50%-100% of the belt's tensile strength, while vulcanized joints can deliver 60%-100% of the belt's full strength. These versatile joint options cater to customers' diverse needs, ensuring the system operates safely and efficiently.