With the increasing adoption of air domes and air-supported structures in sports facilities, industrial warehouses, exhibition halls, and temporary buildings, the performance requirements for membrane materials continue to rise. As a core component of air-supported structures, the membrane not only serves as an enclosure but also directly contributes to structural load-bearing and stability.
Among various membrane solutions, PVC coated fabric has become one of the most mature and widely used materials in the air-supported structure industry due to its stable performance, cost efficiency, and flexibility in installation and maintenance.
This article provides a comprehensive overview of PVC coated fabric for air domes, covering material definition, key performance requirements, common specifications and customization options, and the importance of selecting a reliable supplier.
I.What Is PVC Coated Fabric for Air Domes?
PVC coated fabric for air domes is a composite membrane material specifically engineered for long-term load-bearing and airtight operating environments in air-supported structures. It typically consists of a high-strength industrial polyester base fabric as the structural reinforcement, coated on one or both sides with polyvinyl chloride (PVC) through knife coating or coating processes, forming a multi-layer composite with both structural and functional properties.
In air dome applications, this fabric is not merely a covering or enclosure material; it acts as the primary load-bearing membrane. The overall shape and stability of the dome depend on a continuous tension system created by internal air pressure, requiring the membrane to maintain stable mechanical performance and dimensional integrity under long-term tensile stress.
From a structural perspective, the polyester base fabric provides tensile strength, tear resistance, and dimensional stability, while the PVC coating delivers airtightness, waterproofing, weather resistance, flame retardancy, and surface protection. By optimizing base fabric specifications, coating thickness, and formulation design, it is possible to balance structural safety, material weight, flexibility, and service life.
Compared with general-purpose PVC tarpaulins, PVC coated fabrics for air domes feature significantly higher base fabric strength, superior airtightness, enhanced aging resistance, and greater long-term reliability. They can also be customized with specific functionalities such as UV resistance, flame retardancy, low-temperature flexibility, or high-reflectivity surfaces to meet project-specific requirements. These characteristics make them suitable for large-span, long-term, and safety-critical air-supported architectural structures.
Such materials are widely used in sports domes, industrial storage domes, temporary or semi-permanent exhibition halls, logistics covering systems, and emergency or seasonal structures, offering a proven and reliable membrane solution for air-supported applications.
II.Key Performance Requirements for Air-Supported Structure Fabrics
Air-supported structures maintain their form through continuous internal air pressure, making the membrane not only an enclosure system but a critical load-bearing component. As a result, PVC coated fabrics used for air-supported structures must meet significantly higher standards in mechanical performance, physical properties, and long-term durability than conventional tarpaulin materials.
High tensile strength and structural stability
During service, air-supported membranes remain under continuous biaxial tension. Adequate tensile strength in both warp and weft directions, along with controlled elongation, is essential to prevent excessive deformation under sustained internal pressure, wind loads, and snow loads. High-tenacity polyester base fabrics, combined with optimized weaving structures and coating penetration, are commonly used to ensure long-term structural stability.
Excellent tear resistance and damage tolerance
During installation, operation, or extreme weather events, localized stress concentrations or external impacts may cause minor damage to the membrane. High tear resistance helps prevent small cuts or punctures from propagating, significantly reducing the risk of structural failure—particularly critical for large-span and long-term installations.
Reliable airtightness and low air permeability
Stable internal pressure is fundamental to air-supported structures. The membrane must exhibit very low air permeability. High-quality PVC coatings form a continuous and dense barrier on the base fabric, minimizing air leakage, reducing energy consumption of air supply systems, and maintaining pressure stability under variable environmental conditions.
Weather resistance and UV aging performance
Air-supported structures are typically exposed to outdoor environments for extended periods. The membrane must withstand prolonged UV radiation, temperature fluctuations, rain, snow, and humidity. Incorporating effective UV stabilizers and anti-aging additives into the PVC formulation helps slow material degradation and preserve mechanical properties over time.
Flame retardancy and safety compliance
As part of public or semi-public building systems, air-supported membranes often need to comply with specific fire performance standards. Flame-retardant PVC coatings can slow flame spread and reduce fire risks, providing valuable time for evacuation and emergency response while meeting regional regulatory requirements.
Low-temperature flexibility and environmental adaptability
In cold climates or regions with large temperature variations, the membrane must retain flexibility and impact resistance at low temperatures to prevent cracking or coating delamination, ensuring reliable year-round operation.
Long-term fatigue resistance and dimensional stability
Throughout their service life, air-supported structures experience continuous pressure fluctuations, wind-induced vibration, and thermal movement. High-quality PVC coated fabrics are designed to maintain structural integrity and dimensional stability under repeated stress, minimizing risks of coating cracks, delamination, or base fabric damage.
III.Common Specifications and Customization Options
PVC coated fabrics for air-supported structures are available in a wide range of specifications to meet different project requirements. Typical fabric weights range from 650 g/m² to over 1100 g/m², with thicknesses generally between 0.6 mm and 1.0 mm or more, depending on span and structural design criteria.
Common customization options include:
- Single-side or double-side PVC coating
- Matte, semi-gloss, or glossy surface finishes
- A wide range of colors, including high-reflectivity white for improved interior lighting
- Enhanced UV-resistant, anti-fungal, and anti-aging formulations
- Flame-retardant grades tailored to different market regulations
IV.Why Choose Our PVC Coated Fabrics?
Our PVC coated fabrics are specifically designed for long-term air dome and air-supported structure applications, rather than general-purpose tarpaulin use. Through strict raw material selection, advanced coating technology, and consistent quality management systems, we ensure reliable performance under demanding environmental conditions.
Our advantages include:
- Stable mechanical properties suitable for continuous air-pressure operation
- Excellent weather and UV resistance for long-term outdoor use
- Flexible customization options to match project-specific requirements
- Compliance with multiple international fire safety and material standards
Whether for sports domes, industrial storage facilities, or large-scale temporary and semi-permanent structures, our PVC coated fabrics provide a safe, durable, and cost-effective membrane solution for air-supported architecture.
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Felicia Qi
I am Felicia. I have been working in the PVC tarpaulin industry at Haining Lona Coated Material Co., Ltd. for nearly 10 years.With nearly 20 years of experience in the textile foreign trade industry. I am confident that my professional expertise and high-quality products will win your trust.
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