3.1 Fiber Structure Optimization
- Material composition: HDPE/PA blend with plant-based modified component ≥28%
- Fiber linear density: 13,000 dtex
- Three-dimensional helical profile with diamond-like cross-section
- Pile height: 40–45 mm (optimized for 7-a-side dynamics)
- Fiber density: approx. 17,000 tufts/m²
- UV stabilizer content: 0.8%–1.0%
- Antioxidant content: 0.5%–0.7%
This configuration aims to maintain upright fiber structure without granular support while distributing localized load more evenly.
3.2 Multi-Layer Eco-Locking Backing System
Three-layer composite design:
- PP reinforcement layer (1.9 mm)
- Elastic PU cushioning layer (6.5 mm)
- Permeable PE drainage layer (2.6 mm)
Thermal bonding replaces solvent-based adhesives, supporting:
- Bonding strength ≥2.4 MPa
- Improved hydrolysis resistance
- Reduced delamination risk under repeated loading
3.3 Installation and Lifecycle Management
- Modular panel dimensions customizable (e.g., 3 m × 5 m, 4 m × 5 m)
- Seam tolerance ≤2 mm
- Base compaction ≥95%
- Surface flatness tolerance ≤2 mm / 3 m
Routine maintenance is limited to surface cleaning and periodic washing, with lifecycle maintenance costs typically referenced at about one-third of conventional infilled systems under comparable usage conditions.
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