← All Technical Specification Groups (Hub)
🔥 TS EN 13773 Class 1 • DIN 4102-B1 • NF P 92-503 M1 • BS 5867-2 Type B/C • NFPA 701 • IMO FTPC Part 7
7 Engineering Spec Groups:
🪵 1. Wood Venetian Stack Chart🔥 2. Flame Retardant (IFR/FR) Standards☀️ 3. Blackout, Dimout & Screen Optical🧪 4. Finishes, Fastness & Ecology🧵 5. Curtain Groups, Weaving & Sewing⚡ 6. Motors, Automation & Acoustics🔩 7. Tracks, Rods, Tubes & Hardware🎮 8. Motor Brands & User Manual🧼 9. Curtain Care, Washing & Maintenance
🔥 INTERNATIONAL ENGINEERING & TENDER SPECIFICATION
Inherently Flame Retardant (IFR / Trevira CS) vs. Topical FR Curtain Standards Specification
Complete international fire retardancy matrix for hospitality, healthcare, embassy, and marine tenders: EN 13773 Class 1, DIN 4102-B1, NF P 92-503 M1, BS 5867-2 Type B & Type C (50 washes), NFPA 701, and IMO FTP Code Part 7.
- ✓IFR (Trevira CS) molecular phosphorus copolymer: permanent fire safety across 50+ commercial washes
- ✓Critical technical distinction between permanent IFR yarns and topical FR chemical dips
- ✓Full test criteria for EN 13773 Class 1, DIN 4102-B1, BS 5867 Type C, M1, NFPA 701 & IMO Part 7
VERIFIED ENGINEERING DATA TABLE (ISO / EN / DIN / NFPA)
TS EN 13773 Class 1 • DIN 4102-B1 • NF P 92-503
Table 2 — International Flame Retardancy Standards & Inherently Flame Retardant (IFR) vs. Chemically Treated (FR) Fabric Engineering Matrix
| Standard Code & Region | Class & Test Method | Technical Performance Criterion | Inherently Flame Retardant (IFR / Phosphorus-Modified PES) | Topical Chemical Finish (FR Dip/Coating) | Mandatory Application & Tender Requirement |
|---|---|---|---|---|---|
| TS EN 13773 (European Union & Turkey) | Class 1 (Highest) – Class 5 (EN 1101 + EN 1102 / EN 13772) | Vertical curtain ignitability and flame spread speed; in Class 1 flame never reaches 1st or 3rd marker threads | Permanent Class 1; flame retardancy is locked inside the polymer molecule (100% retained after washing) | Achieves Class 1–3 initially, but water-soluble FR salts leach out after 5–10 wash cycles | Public buildings, ministries, city hospitals, hotels, and auditoriums across Turkey and the EU |
| DIN 4102-1 B1 (Germany / DACH Region) | B1 — Schwer entflammbar (Brandschacht 4-Burner Chimney Test) | Mean residual unburned length ≥ 15 cm across 4 specimens (19×100 cm), smoke temp ≤ 200°C, no flaming droplets | Lifetime B1 certified (Trevira CS / equivalent IFR yarn); never requires re-impregnation after laundering | Loses B1 compliance after wet washing unless chemically re-treated and re-certified | German, Austrian & Swiss export tenders, international hotel chains, and stage/exhibition drapery |
| NF P 92-503 M1 (France & Belgium) | M1 — Non-gouttant (Electric Radiator & Burner Test) | Afterflame time ≤ 5 sec, zero molten flaming droplets permitted | Directly achieves M1 rating; organophosphorus comonomer suppresses melting and flaming drips | Heavy coatings may downgrade to M2/M3 due to smoke or droplet release | French/Belgian hospitality, embassy, university, and high-rise office specifications |
| BS 5867-2 Type B & Type C (United Kingdom) | BS EN ISO 15025 Surface Ignition + BS EN ISO 10528 Industrial Wash | Type B: after 12 standard washes; Type C: after 50 commercial washes (75°C) with afterflame ≤ 2.5 sec | Passes both Type B and rigorous 50-wash healthcare Type C unconditionally | Can only pass Type B under Dry-Clean-Only restriction; fails 50-wash Type C hospital test | UK & GCC hotels (Type B) and NHS / International Hospital cubicle & ward curtains (Type C) |
| NFPA 701 (USA & Global Hospitality Chains) | Test Method 1 (<700 g/m² Drapery) & Method 2 (>700 g/m² Vinyl/Blackout) | Afterflame ≤ 2.0 sec, mass loss ≤ 40%, flaming residue on floor ≤ 2.0 sec | Permanent compliance under both Method 1 (Sheers, Dimout, Drapery) and Method 2 (Stage/Blackout) | Applied via FR-compounded acrylic/PU foam in 3-Pass blackout and roller shade fabrics | Marriott, Hilton, Hyatt, IHG brand standards and US Embassy / diplomatic facilities |
| IMO FTP Code Part 7 & EN 13501-1 (Marine & Building) | IMO Res. A.471(XII) & Euroclass B-s1,d0 / B-s2,d0 | Marine suspended textile flame/smoke test; EN 13501-1 s1=minimal smoke, d0=zero flaming droplets | IMO Wheelmark & Euroclass B-s1,d0 certified for cruise ships, superyachts, and high-rise facades | Restricted in enclosed marine cabins due to higher smoke density (s2/s3) | Superyachts, cruise liners, airport terminals, and high-rise commercial towers |
🔥 Inherently Flame Retardant (IFR) vs. Topical FR Engineering Rule
Molecular Permanence: IFR (Trevira CS) binds organophosphorus comonomers directly into the polyester polymer backbone, passing BS 5867-2 Type C (50 industrial washes at 75°C) for the lifetime of the curtain. Topical FR chemical finishes leach out after 5–10 wet washes.
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2. Flame Retardant (IFR/FR) Standards — #1
TS EN 13773 Class 1 • DIN 4102-B1 • NF P 92-503 M1 • BS 5867-2 Type B/C • NFPA 701 • IMO FTPC Part 7
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2. Flame Retardant (IFR/FR) Standards — #2
TS EN 13773 Class 1 • DIN 4102-B1 • NF P 92-503 M1 • BS 5867-2 Type B/C • NFPA 701 • IMO FTPC Part 7
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2. Flame Retardant (IFR/FR) Standards — #3
TS EN 13773 Class 1 • DIN 4102-B1 • NF P 92-503 M1 • BS 5867-2 Type B/C • NFPA 701 • IMO FTPC Part 7
❓ Frequently Asked Engineering & Tender Questions
❓ What is the difference between IFR (Inherently Flame Retardant) and FR treated curtains?
IFR (Trevira CS) integrates fire retardancy into the molecular structure of the yarn permanently, surviving 50+ commercial washes. Topical FR curtains are dipped in chemical salts after weaving, which wash out in water.
❓ Which fire standards are mandatory for 5-star hotels and hospitals?
Hospitality and government tenders require EN 13773 Class 1, DIN 4102-B1, NF P 92-503 M1, or NFPA 701. Healthcare cubicle and ward curtains require BS 5867-2 Type C tested after 50 commercial laundry cycles.