The strength of PVC tarpaulin is mainly determined by its coating and base fabric.
Base Fabric Material: Mainstream products use 100% polyester fiber weaving with a density of 20×20 to 30×30 threads/square inch, providing basic tensile strength. For example, a 550D base fabric can have a tensile strength of 1800-3000 N/5cm.
PVC Coating Thickness: The coating thickness is typically between 0.35-0.9 mm, with a weight of 450-1050 g/m². The thicker the coating, the stronger the waterproofness and abrasion resistance. For example, a 700 g/m² coating can withstand 5000 mm of water column pressure, far exceeding the standard for ordinary tarpaulins.
Tear Resistance: Through heat welding or high-density stitching, the tear strength of PVC tarpaulins can reach 200-450N, suitable for frequent folding or heavy-duty applications.
PVC coated fabrics combine polyvinyl chloride (PVC) with a base fabric through a special process, forming a multi-functional protective layer:
Waterproof and Mildew-proof: The PVC coating completely blocks moisture penetration, and the addition of mildew inhibitors suppresses mold growth, making it suitable for humid environments.
Strong Weather Resistance: UV-resistant treatment ensures stability in environments ranging from -30℃ to 70℃, and it is not prone to aging with long-term exposure.
Fire Resistance: Some products have passed B1 and B2 fire-retardant certifications. The addition of flame retardants can delay combustion, making them suitable for warehouses, construction sites, and other similar applications.
Customizable Design: Supports logo printing, color and thickness adjustments to meet brand identity or special functional requirements.
Construction Engineering: Used for construction site fencing, building material covering, and rain and dust protection. For example, a 450gsm tarpaulin provided by a manufacturer in Guangzhou can cover a 500㎡ construction area.
Agricultural Protection: As a shade net for greenhouses or a rainproof tarpaulin for grain storage, it combines breathability and sealing.
Transportation: Truck tarpaulins need to meet wind and tear resistance requirements; a combination of 1000D base fabric and double-sided coating can withstand friction during high-speed driving.
Outdoor Equipment: Tents, awnings, and other products use lightweight PVC coatings (such as 300gsm), balancing portability and durability.
Conclusion: The strength of PVC tarpaulins is closely related to the coating process and base fabric material; proper selection can significantly improve the user experience. PVC coated fabrics can replace traditional materials and have become the preferred choice for protective products.