I’ve spent the past few months hopping between factories and design reviews, and one request keeps popping up: can we get a PP fire retardant sheet that’s halogen‑free, easy to fabricate, and properly tested? The short answer is yes—and, to be honest, demand is rising fast as teams move away from PVC in favor of lighter, cleaner polypropylene systems.
Lightweighting, halogen-free formulations, and tighter compliance (UL 94, FMVSS 302, ISO 3795) are shaping specs in HVAC plenums, battery plants, cleanrooms, and electrical enclosures. PP brings chemical resistance and weldability; the FR package adds the safety layer. Many customers say it’s easier to machine than expected—and surprisingly durable in corrosive air handling.
| Thickness | 2–30 mm |
| Standard sizes | 1220×2440 mm; 1000×2000 mm; 1500×3000 mm; cut-to-size available |
| Density | ≈0.98–1.05 g/cm³ (depends on FR loading) |
| Flammability | UL 94 V-0 at ≥3.0 mm; V-2 around 2.0 mm |
| Oxygen Index (LOI) | ≈28–32% |
| HDT @0.45 MPa | ≈95–105°C |
| Tensile strength (ASTM D638) | ≈28–35 MPa |
| Surface / Colors | Glossy or embossed; Natural, Grey (RAL7032), Black; custom colors on request |
Thickness-dependent; verify for your design and certification plan.
HVAC plenums and fume ducts, battery module lines, chemical cabinets, cleanroom partitions, machine guards, electrical panel covers, and light‑duty tank cladding. Fabricators like that PP fire retardant sheet can be CNC‑cut, thermoformed, hot‑air welded, and solvent‑free bonded.
| Vendor | FR system | UL 94 @3 mm | MOQ | Lead time | Custom color |
|---|---|---|---|---|---|
| Lida Plastic | Halogen‑free (intumescent) | V‑0 | Flexible | ≈10–15 days | Yes (RAL/Pantone) |
| Regional Brand X | Mineral‑filled | V‑0/V‑2 | Moderate | ≈3–4 weeks | Limited |
| Importer Y | Mixed FR | V‑2 | High | ≈5–6 weeks | Case‑by‑case |
Surfaces: glossy or embossed. Colors: natural, grey RAL7032, black, plus project colors. Cut‑to‑size? Yes, routinely. Origin: No.316 Pingan West Street, Shunping County, Baoding City, Hebei, China 072250. It seems that for many project managers, the quick cut plan is the make‑or‑break.
UL 94 for vertical burn (target V‑0 at 3 mm), ISO 3795 / FMVSS 302 for automotive interiors where relevant, IEC 60695 glow‑wire if used near energized parts, plus RoHS and REACH declarations. And yes, ask for tensile/flexural data (ASTM D638/D790) and HDT (ASTM D648) tied to the exact thickness you’ll use.
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