If you’re hunting for pvc strip bulk rolls that actually hold up, here’s what I’ve learned after too many site visits and a few chilly shifts in walk-in freezers. WANMAO’s “PVC Transparent blue Clear Smooth Plastic PVC Strip Door Curtains cold curtain” comes out of Houligezhuang Village, Langfang, Hebei, China—and, to be honest, the consistency has surprised maintenance teams I talk to.
Two trends keep popping up: energy savings and hygiene. Facilities want better temperature containment without clunky doors; food processors want quick pass-through plus fewer airborne contaminants. Transparent blue strips have become the go-to for cold rooms—color helps glare and contrast without killing visibility. Prices float in a realistic FOB band ($31.8–63.5 per roll), but logistics can tip the scales.
Materials: flexible PVC resin with phthalate-free plasticizers is becoming standard, plus UV stabilizers and sometimes anti-static additives. Process: calendering/extrusion, then annealing for flatness. WANMAO’s smooth/ribbed/flat options are typical; ribbed is popular near forklifts. Testing? You should be seeing ASTM D638 tensile pulls, D2240 Shore A hardness, light transmission checks, and low-temp brittleness tests (around -25°C for freezer use). Real-world service life is ≈3–5 years in heavy-traffic doors; longer in light-use aisles.
| Brand / Origin | WANMAO / Langfang, Hebei, China |
| Type | Smooth / Ribbed / Flat |
| Thickness | 1–6 mm |
| Width | 150–1400 mm |
| Length | 50 m standard / customized |
| Color | Blue / Transparent (others on request) |
| Tensile Strength | ≈12–18 MPa (ASTM D638; real-world use may vary) |
| Hardness | Shore A ≈70–80 (ASTM D2240) |
| Temp Range | -25°C to +50°C typical |
| Certifications | RoHS / REACH compliance statements available |
| MOQ / Samples | MOQ 20 rolls; samples freely provided |
- Cold rooms, blast freezers, and chiller docks (blue strips cut glare).
- Food processing and packaging lines aiming for ISO 14644-ish cleanliness targets.
- Warehouses with constant forklift traffic needing fast pass-through.
- Welding bays (switch to tinted grades), and light dust control zones.
Many customers say the ribbed profile survives pallet brushes better. I’ve seen fewer edge cracks after 9–12 months compared to smooth strips in the same aisle—small sample, but noteworthy.
| Criteria | WANMAO | Generic Importer |
|---|---|---|
| Clarity/Flatness | Consistently good; low wave | Varies by batch |
| Cold Flex Performance | Stable to ≈-25°C | Sometimes stiff below -15°C |
| Customization | OEM/ODM, widths to 1400 mm | Limited SKUs |
| Documentation | RoHS/REACH statements available | Often incomplete |
Custom widths (yes, up to 1400 mm), colored tints, and ribbed patterns are all on the table. With pvc strip bulk rolls, freight optimization matters—bundle 20+ rolls per pallet to shave cost per door. One beverage DC swapped to pvc strip bulk rolls at dock doors and logged a 7–10% reduction in compressor runtime over winter—small study, but the plant manager wouldn’t stop smiling.
Tip: specify thickness by doorway type—2–3 mm for pedestrian, 3–4 mm mixed, 4–6 mm for heavy forklifts. And yes, ask for batch test sheets. It seems obvious, but it’s often skipped.
- Request RoHS and REACH compliance statements for additives.
- Ask for ASTM D638/D2240 and, ideally, ISO 527 tensile reports.
- For food plants, confirm low odor and any local hygiene notes (there’s no universal “food-grade curtain” stamp, so documentation matters).
References:
[1] ASTM International — D638 / D2240 Plastics Testing Standards: https://www.astm.org/
[2] ISO 527 Plastics — Determination of tensile properties: https://www.iso.org/
[3] ECHA — REACH Regulation overview: https://echa.europa.eu/regulations/reach
[4] RoHS Directive 2011/65/EU: https://environment.ec.europa.eu/topics/waste-and-recycling/rohs-directive_en