DERFLEX – Professional Manufacturer of PVC Ventilation Fabrics

As a globally recognized manufacturer of industrial PVC coated fabrics, DERFLEX has built long-term partnerships with ventilation duct producers, mining contractors, and infrastructure engineering companies worldwide. Our expertise lies not only in fabric manufacturing, but also in understanding real underground ventilation challenges.

DERFLEX PVC fabrics for tunnel ventilation ducts are engineered with a deep focus on airflow efficiency, safety standards, mechanical performance, and cost-effective lifecycle value.

Understanding PVC Fabric for Tunnel Ventilation Systems

PVC fabric is the core material used in flexible tunnel ventilation ducts. It must withstand constant air pressure, friction, humidity, dust, and sometimes explosive gases. Ordinary coated fabrics fail quickly in such conditions. DERFLEX develops ventilation-specific PVC fabrics that deliver consistent performance throughout long project cycles.

Our ventilation fabrics are produced by coating high-tenacity polyester base cloth with specially formulated PVC compounds, creating a composite material that balances flexibility, strength, and airtightness.

Key Performance Requirements for Tunnel Ventilation Fabric

• High Tensile Strength: Prevents tearing under airflow pressure and installation stress.
• Excellent Airtightness: Minimizes air leakage to improve ventilation efficiency.
• Flame Retardancy: Critical for underground fire safety compliance.
• Anti-Static Properties: Reduces ignition risk in explosive environments.
• Abrasion Resistance: Withstands contact with tunnel walls, equipment, and debris.
• Flexibility: Allows easy folding, welding, and duct fabrication.

DERFLEX PVC Fabric Structure & Composition

Our tunnel ventilation PVC fabric is constructed using a multi-layer engineering approach:

• High-strength polyester woven base fabric
• PVC coating with flame-retardant additives
• Optional anti-static and anti-abrasion surface treatment
• Smooth inner surface for optimized airflow

This structure ensures a balance between mechanical durability and long-term ventilation performance.

Technical Specifications Overview

Applications in Tunnel, Mining & Underground Engineering

DERFLEX PVC fabric is specifically developed for manufacturing flexible ventilation ducts used in:

• Road and railway tunnel excavation
• Subway and metro construction projects
• Coal and metal mining ventilation systems
• Hydropower and water diversion tunnels
• Large underground caverns and chambers
• Temporary and permanent engineering ventilation
  
  

Why PVC Fabric Is Preferred Over Rubber or Metal

Compared to traditional rubber-coated fabrics or rigid metal ducts, PVC coated fabrics offer superior balance between cost, flexibility, and performance. PVC fabric ducts are lighter, easier to install, and more adaptable to changing tunnel lengths.

DERFLEX PVC fabrics also provide more consistent quality control and customizable formulations to meet different project standards.

Flame Retardant & Safety Compliance

Fire safety is non-negotiable in underground environments. DERFLEX PVC ventilation fabrics are engineered to meet stringent flame-retardant requirements, including self-extinguishing properties and low flame spread.

Each production batch undergoes internal quality verification to ensure stable flame-retardant performance suitable for mining and tunneling regulations worldwide.

Anti-Static & Airtight Engineering Design

Static electricity and air leakage are two major risks in underground ventilation. DERFLEX incorporates conductive additives and surface treatments to reduce static buildup, while advanced coating uniformity ensures high air tightness.

This combination improves both operational safety and ventilation efficiency.

Fabric Processing Compatibility

DERFLEX PVC ventilation fabrics are optimized for industrial processing, including:

• High-frequency welding (HF welding)
• Hot air welding
• Sewing and reinforced hemming
• Steel ring and zipper integration

This ensures smooth conversion into finished ventilation ducts.

OEM & Custom PVC Fabric Solutions

DERFLEX offers full OEM and ODM services for ventilation duct manufacturers. Fabric parameters such as weight, thickness, tensile strength, color, surface finish, and roll width can be customized according to project needs.

We support long-term supply programs for infrastructure projects requiring stable material performance over multiple production phases.

Quality Control & Manufacturing Excellence

Every roll of DERFLEX PVC fabric is produced under strict quality control systems. From raw material selection to coating consistency and final inspection, each step is monitored to ensure reliability and repeatability.

This manufacturing discipline allows DERFLEX to supply ventilation fabrics trusted by professional duct producers worldwide.

Global Supply for Infrastructure & Mining Projects

DERFLEX PVC fabrics are exported to Europe, North America, the Middle East, South America, and Asia-Pacific regions. Our materials support major tunnel excavation, mining, and infrastructure development projects globally.

Why Choose DERFLEX PVC Fabric for Ventilation Ducts?

• Dedicated ventilation fabric formulations
• Proven performance in underground environments
• Stable quality for large-scale projects
• OEM-friendly processing compatibility
• Direct manufacturer pricing and support

Contact DERFLEX – Your Reliable PVC Ventilation Fabric Partner

If you are sourcing PVC fabric for tunnel ventilation ducts, DERFLEX provides the technical expertise, manufacturing capacity, and global supply reliability required for professional engineering projects.

Company: DERFLEX
Website: https://www.derflex.com