The engineering excellence of LEAPKA's L2-506 Dark Grey fabric represents a significant advancement in heavy-duty solar protection materials. As part of the L2 Thick Plain Weave series, this specialized sunscreen fabric combines robust physical properties with precise optical performance characteristics, making it suitable for demanding architectural applications where both durability and solar control are paramount.

Material Composition and Structural Properties

The L2-506 is engineered through an advanced manufacturing process that creates a durable composite material optimized for superior performance:

Material Architecture: 30% high-tenacity polyester/70% PVC coating matrix. This specific formulation ensures optimal balance between structural integrity provided by the polyester fibers and environmental resistance afforded by the polymer coating system

Surface Density: 540 g/m² ± 5%. This substantial weight classification positions the fabric in the heavy-duty category, providing exceptional wind resistance and durability for large-scale applications

Physical Dimensions: Standard widths of 200 cm (78 inches), 250 cm (98 inches), and 300 cm (118 inches) with 35-meter roll lengths. These dimensions accommodate commercial-scale projects while minimizing material waste

Optical and Performance Characteristics

The fabric's technical excellence is demonstrated through its precisely calibrated properties:

Openness Factor: 5% ± 0.5%. This carefully engineered permeability rating represents the optimal balance between solar protection and visibility retention

Yarn Configuration: 36 × 34 thread count utilizing 0.42 mm diameter yarns. This robust weave pattern ensures consistent performance and enhanced resistance to mechanical stress

Thickness: 0.70 mm ± 5%. The substantial thickness contributes to the fabric's durability and flat weave appearance

Performance Certification and Compliance

The material meets rigorous international standards for architectural textiles:

Wind Resistance: Certified for 70 km/h wind loads (EN 1932)

Fire Safety: Class B fire rating (EN 13501-1 certification)

Durability: 4,000 hours accelerated weathering testing with <2% performance degradation

Color Fastness: Grade 7 color stability (ISO 105-B02)

Fabrication Compatibility

The material supports various professional fabrication methods:

Cutting Methods: Compatible with cold knife cutting and specialized crush cutting systems

Seaming Technology: Suitable for thermal bonding and high-frequency welding techniques

Hemming Options: Compatible with industrial sewing methods using heavy-duty UV-resistant thread

Environmental Performance

The fabric demonstrates exceptional environmental resistance:

UV Resistance: >95% UV radiation blockage

Thermal Regulation: 72% solar heat gain reduction

Moisture Resistance: Excellent performance in high-humidity environments

Temperature Tolerance: Stable performance from -30°C to +70°C

This technical profile establishes LEAPKA L2-506 as a premium roller blinds fabric solution that combines robust engineering with proven performance characteristics, making it particularly suitable for demanding architectural applications where both durability and solar control are critical requirements.