The following values reflect the test-referenced averages provided in your draft, expressed in common EU/NA technical terms and units. These should be confirmed via project-specific third-party testing as part of venue commissioning.
3.1 Athlete protection and comfort (indoor-critical on hard sub-bases)
Shock absorption / Force Reduction (FR)
- Referenced indoor guidance window: 52%–68%
- Referenced domestic indoor safety window: 48%–70%
- Indoor “most suitable” range stated: 55%–65%
- Vivaturf reference: 58%–64%
- Reported stability note: variation ≤ 2.5%
Vertical deformation
- Referenced indoor guidance: 2.2–4.2 mm
- Indoor fit range stated: 2.5–3.8 mm
- Vivaturf reference: 2.6–3.6 mm
Why this matters indoors: these ranges aim to deliver a comfortable landing response without losing the support needed for rapid acceleration and tight turning.
3.2 Ball interaction (short-passing accuracy in tight spaces)
Ball rebound ratio
- Referenced indoor guidance: 0.70–0.88
- Vivaturf reference: 0.72–0.85
- Natural-grass deviation approach stated: ≤ 4%
- Short-pass and lofted-pass line deviation noted in your text: ≤ 3.2% (field-use indicator)
Rolling friction coefficient
- Referenced indoor guidance: 0.42–0.60
- Vivaturf reference: 0.45–0.57
- Roll distance deviation: ≤ 3%
Why it matters indoors: players need the ball to feel predictable and controllable for tight combination play, wall passes, and quick finishing sequences.
3.3 Traction/slide balance (slip control + abrasion risk management)
Sliding resistance
- Referenced indoor guidance: 0.40–0.65
- Vivaturf reference: 0.43–0.55
- Skin-friction reduction vs. infilled systems mentioned in your text: > 30% (presented as comparative intent; results are installation- and testing-method dependent)
Why it matters indoors: stable traction helps reduce unexpected slips in stop–start play, while overly aggressive grip can raise abrasion and joint stress—so balance is key.
3.4 Acoustic comfort (a differentiator for indoor venues)
Your draft includes noise-reduction performance linked to fiber additives and an elastic backing layer:
- Impact noise reduction: > 28%
- Running/footfall noise reduction: > 32%
Why it matters indoors: reducing sharp impact peaks can improve user comfort and perceived quality, especially for commercial venues with adjacent uses.
3.5 Durability for high daily utilization (indoor business reality)
Fiber and surface structure
- Linear density (dtex): 13,000–14,000
- Tuft density: 18,000–19,000 tufts/m²
- Single-yarn tensile breaking force: ≥ 140 N
- Elongation at break: 45%–60%
- Tear resistance: ≥ 30 N/mm
Wear testing (Lisport XL)
- ≤ 3.5% fiber breakage after 15,000 cycles
Backing and seams
- Backing bonding strength: ≥ 2.5 MPa
- Seam strength: ≥ 1,800 N / 50 mm
Why it matters indoors: these values focus on maintaining play feel despite high session density, small-sided pivoting, and repeated toe/sole actions.
3.6 Hygiene, stain control, and indoor air indicators (experience + compliance)
Your draft references:
- Stain adhesion rate: ≤ 5% (easy cleanability intent)
- Antibacterial efficacy: ≥ 99%
- TVOC emission rate: ≤ 0.20 mg/(m²·h)
- Formaldehyde: not detected
- Heavy metal migration: ≤ 0.25 mg/kg
Why it matters indoors: lower emissions and easier cleaning help operators maintain a consistently “fresh” facility experience without heavy chemical usage.
3.7 Indoor climate compatibility (for stable appearance and feel)
- Service temperature range (referenced): −20°C to +65°C
- UV aging reference: 1,000 h, colour fastness ≥ Grade 7
Even indoors, UV/heat exposure can occur via skylights and lighting systems; stability supports consistent aesthetics and feel.
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