Description
What is NY380 Knife-Coated PVC Tarpaulin?
The NY380 is a 380 g/m² knife-coated PVC tarpaulin engineered for fish farming pools, aquaculture ponds and on-farm water storage. It is the lightest pool fabric in GaiaTextile’s knife-coated range: a 500D × 840D polyester base with 30 × 18 thread density delivers 2100N/5cm warp tensile strength and 260N warp tear strength, while the fused PVC film keeps the membrane fully waterproof with UV aging rated ≥ 4 per ISO 4892-3. For pond builders and fish farmers, the practical takeaway is straightforward: a proven waterproof membrane for seasonal pools, hatcheries and storage tanks that stays flexible from −30°C to +70°C — without paying for heavy-duty liner grades the site does not need. It is the sheet you specify when the job calls for dependable, long-season water retention at the lowest entry cost in the range.
Knife-Coated vs. Other PVC Coating Methods
Knife coating — also called spread coating — spreads a PVC paste across the polyester scrim with a doctor blade and fuses it in an oven, creating a thin, uniform film that bonds directly into the yarn structure. The key difference from laminated tarpaulins is how the film is attached: instead of bonding a pre-made film to the fabric surface, knife coating builds the coating layer onto the yarn itself, so the two are far harder to separate. In pond service this matters at exactly the points where liners fail: folded corners, anchor points and the waterline where the membrane flexes continuously. A knife-coated sheet resists peeling under that repeated movement, and the fused film keeps water on one side and soil on the other rather than letting moisture creep along the yarn. Where heavyweight fully coated grades win on brute strength, the NY380’s thinner, uniform coating keeps the sheet light enough for one installation team to lay out, position and repair on site — a real advantage when a pool is being set up in a remote field.
NY380 Technical Specifications
| Property | Value | Test Standard |
|---|---|---|
| PRODUCT PARAMETERS | ||
| Technical properties | ||
| Product | NY380 Knife-Coated PVC Tarpaulin | – |
| Base Fabric | Polyester | DIN ISO 2076 |
| Yarn Count | 500D×840D | DIN EN ISO 2060 |
| Density | 30×18 | DIN EN 1049-2 |
| Total Weight | 380g/m2 | DIN EN ISO 2286-2 |
| Roll length | 50/100 m/roll | – |
| Physical properties | ||
| Tensile strength | Warp 2100N/5CMWeft 1900N/5CM | EN ISO 1421 |
| Tear strength | Warp 260NWeft 220N | DIN 53363 |
| Adhesion | ≥60N/5CM | EN ISO 2411 |
| Extreme working temperatures | -30~70℃ | DIN EN 1876-1 |
| Flame retardancy | B1 | DIN 4102 |
| Surface treatment | ||
| Surface treatment | Acrylic / PVDF | – |
| Solar optical values & aging resistance | ||
| Color fastness | ≥7 | ISO 105-B04 |
| UV Aging Test | ≥4 | ISO 4892-3 |
| Eco friendly | ||
| Environmental Friendly | Pass | REACH |
| Anti-mildew Test | 0 Grade | ASTM G21-15 |
| Heavy Metal Test (Cd/Pb/Hg) | Pass | GB/T 26125 |
| Odor Test | Pass | GB 18401 |
| PH Value Test | Pass | GB 18401 |
| Application | Modern Agriculture & Aquaculture |
| Base Fabric | 500D/840D 30/18 |
| Weight | Under 400gsm |
| Yarn Denier | 200D-500D (Light & Standard) |
How Does NY380 Compare to NY480?
| Property | NY380 | NY480 |
|---|---|---|
| Total weight | 380 g/m² | 480 g/m² |
| Yarn / density | 500D×840D / 30×18 | 840D×1000D / 24×18 |
| Tensile (warp/weft) | 2100 / 1900N | 2500 / 2100N |
| Tear (warp/weft) | 260 / 220N | 360 / 350N |
| Coating adhesion | ≥ 60N/5cm | ≥ 60N/5cm |
| Best for | Seasonal pools, hatcheries, storage tanks | Large ponds, high-density stocking, permanent liners |
When to choose NY380: specify NY380 when the project is weight- and budget-sensitive — seasonal fish pools, hatcheries, transport tanks and water storage where the liner sits on a smooth, prepared base and is not subject to heavy abrasion or constant water pressure. It is also the easier roll to handle on site: at 380 g/m² the sheet is lighter per square meter than NY480, which speeds up layout and welding on smaller ponds. If the pond is large, deep, or stocked at high density, step up to NY480 (480 g/m², 2500N tensile, 360N tear) — send your pond dimensions and GaiaTextile’s team will confirm the correct grade before you order.
Key Features and Benefits
- 2100N/5cm warp tensile strength (EN ISO 1421) — holds its shape under water pressure, wind lift on exposed tanks and handling stress during installation.
- 260N warp / 220N weft tear strength (DIN 53363) — a puncture or cut does not run easily across the panel, so small damage stays repairable in service.
- B1 flame retardant (DIN 4102) — a safer membrane around farm buildings, feed storage and electrical installations.
- −30°C to +70°C working range (DIN EN 1876-1) — remains pliable when pools are filled in early spring and through hot summer months.
- UV aging ≥ 4 (ISO 4892-3) and color fastness ≥ 7 (ISO 105-B04) — the surface resists sun damage, so the membrane keeps its strength and color over seasons of outdoor exposure.
- Coating adhesion ≥ 60N/5cm (EN ISO 2411) — the film stays bonded through repeated filling, emptying and folding cycles.
- 50 / 100 m roll lengths — order exactly what your pond program needs, from a single trial pool to a batch of tanks.
Ideal Applications
- Fish farming pools and hatchery tanks
- Aquaculture ponds for freshwater and low-salinity species
- On-farm water storage and irrigation reservoirs
- Temporary holding and grading tanks
- Pond covers and frost protection sheets
Certifications and Quality Assurance
Every NY380 roll is tested in GaiaTextile’s factory laboratory before dispatch: tensile per EN ISO 1421, tear per DIN 53363, adhesion per EN ISO 2411, weight per DIN EN ISO 2286-2, yarn count per DIN EN ISO 2060, thread density per DIN EN 1049-2, flame retardancy B1 per DIN 4102, UV aging per ISO 4892-3 and color fastness per ISO 105-B04. GaiaTextile is a Chinese manufacturer of PVC coated and laminated fabrics supplying tarpaulin, tent and aquaculture buyers worldwide — you source directly from the factory that controls the formulation, the coating line and the quality checks.
FAQ
What is NY380 used for?
It is a 380 g/m² waterproof knife-coated PVC tarpaulin for fish farming pools, aquaculture ponds and water storage — the lightest grade in GaiaTextile’s knife-coated range.
Is NY380 safe for fish and water contact?
The sheet is a sealed, waterproof PVC membrane with no exposed yarn. For drinking-water or food-contact service, confirm your local regulatory requirements with our team before specifying.
How long will NY380 last outdoors?
It passes the ISO 4892-3 UV aging test with a rating ≥ 4 and shows color fastness ≥ 7 (ISO 105-B04), with a working range of −30°C to +70°C. Actual service life depends on exposure and installation; tell us your climate and we will advise.
What is the difference between NY380 and NY480?
The weight and strength tier. NY380 is 380 g/m² with 2100N/5cm warp tensile and 260N tear; NY480 is 480 g/m² with 2500N/5cm warp tensile and 360N tear, for larger or higher-density ponds.
Is NY380 flame retardant?
Yes — it is classified B1 (flame retardant) under DIN 4102.
What roll lengths are available?
Standard rolls are 50 m or 100 m. Custom GSM, width and color are available on request.
Can I get a sample before ordering?
Yes. Send your required GSM, width and color and we will confirm sample availability and lead time.
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