Deep Process Control on Coating Weight — Three full production lines and 36 sets of professional equipment ensure batch-to-batch GSM consistency and coating adhesion uniformity across every roll of 550gsm PVC coated tarpaulin.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Weight | 550gsm |
| Total Thickness | 0.45mm |
| Color | Black |
| Coating Material | PVC |
| Surface Finish | Glossy or matte |
| Denier Options | 200Dx300D / 500Dx500D / 840Dx840D / 1000Dx1000D |
| Temperature Range | -15°C to 70°C |
| Working Life | Suited to extended outdoor and submerged exposure depending on environment |
| Treatment | Waterproof, UV resistant (test basis not stated in source), Flame retardant (grade not stated), Anti-fungal |
| Key Features | Water-proof, rain-resistant, tear-resistant, abrasion resistant, flexible, strong coating adhesion |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Fish pond and shrimp pond lining | Permanent water immersion, soil chemistry, puncture risk from substrate |
| Fish tank and hatchery construction | Constant water contact, non-leaching coating requirement, structural integrity |
| Agricultural water reservoirs | UV exposure, standing water, mechanical damage during installation |
| Aquaculture facility covers | Humid environment, anti-fungal requirement, frequent handling |
Why Verified GSM Matters More Than the Number on the Quotation for PVC Coated Tarpaulin Roll for Pond Liner
Actual weight per square metre must be confirmed roll-by-roll before the material leaves the factory, not assumed from the label.
Buyers specifying a PVC Coated Tarpaulin Roll for pond liner often discover on arrival that the material is lighter than quoted — a shortfall that shows up as reduced puncture resistance and thinner coating layers at the point of highest stress. [NEED_CITE: GSM verification methods for coated industrial fabrics] A 550gsm specification means little if the base fabric accounts for more of that weight than the PVC coating, leaving the surface vulnerable to abrasion during installation and prolonged submersion. The gap between stated and delivered GSM is where liner failures begin, often not visible until the pond is filled and the fabric stretches under hydrostatic load.
Coating Adhesion and Submersion Performance
A PVC Coated Tarpaulin Roll for pond liner must maintain coating-to-fabric bond integrity under continuous water exposure. At 550gsm with 0.45mm total thickness, this material provides a PVC coating layer that adheres to the woven polyester base through controlled coating processes. When adhesion is strong, the coating resists delamination even as the fabric flexes against uneven pond substrates and expands under water pressure. Weak adhesion leads to blistering and separation — defects that compromise waterproofing and introduce leaching risk into the aquaculture environment.
Batch Consistency Across Multi-Roll Orders
Aquaculture operators lining large ponds or multiple facilities require colour and coating uniformity across every roll in the shipment. Visible colour variation between adjacent panels becomes apparent once the liner is installed and exposed to sunlight. More critically, inconsistent coating weight between rolls means some sections of the pond floor receive thinner protection than others, creating weak points that fail first under sediment load or stock movement. [NEED_CITE: batch-to-batch colour and coating consistency standards in industrial textiles] Roll-to-roll QA at every production stage addresses this directly, with inspection records generated before dispatch rather than sampled after arrival.
How Base Fabric Denier and Coating Weight Interact
The denier options — 200Dx300D through 1000Dx1000D — determine the tensile strength of the woven base, while the PVC coating contributes abrasion resistance and waterproofing. A heavier denier base does not automatically mean a better pond liner if the coating weight is reduced to maintain the 550gsm total. For pond applications, a balanced construction where the coating is thick enough to resist puncture from sharp substrate while the base fabric provides dimensional stability under hydrostatic pressure is essential. The -15°C to 70°C temperature range ensures the PVC remains flexible during cold-water installation and does not soften excessively under summer UV exposure at the pond edges. The anti-fungal treatment addresses biological growth in the permanently humid conditions of aquaculture environments.
What Happens When the Wrong Specification Reaches the Pond
When a liner specification is selected on price rather than verified GSM and coating weight, the consequences appear during the first filling cycle. Thinner-than-specified coating layers crack at fold lines created during transport and installation. Inconsistent tension across the woven base causes the fabric to stretch unevenly under water weight, pulling away from anchor trenches. [NEED_CITE: common failure modes in geomembrane and coated fabric pond liners] Anti-fungal treatment that was claimed but not applied allows algae and biofilm to colonize the surface, degrading the PVC over successive seasons. These are not defects that can be repaired in situ — they require partial or complete liner replacement, costing far more than the original specification decision.
Why Procurement Verification Protects the Installation
Every roll of 550gsm black PVC coated tarpaulin destined for aquaculture use undergoes pre-shipment inspection covering coating weight, colour consistency, and surface finish. The 10-person R&D team handles custom width and length requirements, developing samples within days so buyers can verify fit and performance before committing to bulk production. In-process QA at each of the three production lines catches coating weight deviations before the roll is wound, not after it arrives at the port. This is process control applied to coated fabric, not a generic quality promise.
Documentation & Verification
- Material specification sheet stating 550gsm weight, 0.45mm thickness, and base fabric denier
- Pre-shipment inspection record with roll-by-roll GSM and coating weight confirmation
- Batch colour consistency report across all rolls in the order
- UV and flame retardant test reports available on request — confirm grade required
- Roll packing list with batch numbers for full traceability
- ISO and CE certification documentation accompanying shipment
Fabrication, Handling & Storage
- Heat welding parameters should be tested on 550gsm samples before full fabrication to avoid seam failure
- Store rolls flat or suspended to prevent permanent creasing in the 0.45mm PVC coating
- Use sharp blades for cutting to avoid fraying the woven base fabric at panel edges
- Avoid dragging unrolled sheets across abrasive ground during pond installation
- Clean with mild detergent only — harsh solvents degrade the PVC coating surface
- Allow material to acclimate to site temperature before welding in cold conditions
What to Specify When Requesting a Quotation
Provide the pond dimensions, substrate type, and whether the liner will be anchored in trenches or mechanically fastened at the perimeter. State the target market so that any required UV or environmental compliance can be confirmed against available test reports. Indicate whether rolls are needed at standard widths or if custom-cut panels with specific lengths will reduce on-site waste and welding. Specify if glossy or matte surface finish is preferred, and whether sample approval is required before bulk production begins.
Frequently Asked Questions
Q: How is the 550gsm weight verified before the rolls are shipped?
A: Each roll is individually inspected during pre-shipment QA, with coating weight and total GSM measured and recorded. The inspection report accompanies the shipment so you can cross-reference stated values against what was delivered. This eliminates the common problem of receiving material lighter than the quotation specified.
Q: Is the PVC coating safe for direct contact with aquaculture water?
A: The material is described as eco-friendly and is used for fish tank and pond lining applications. If your operation requires specific environmental or food-contact certification, request the relevant test documentation during the sample stage to confirm compliance with your local regulatory requirements.
Q: What roll widths and lengths can I order?
A: Standard size options include 3x4m through 10x12m, with custom widths and lengths available subject to reasonable minimums. The R&D team develops cut-to-size samples within days so you can verify dimensions before placing a bulk order for pond liner panels.
Q: How do you ensure colour consistency when I order multiple rolls?
A: In-process quality checks at each production stage monitor coating weight and colour across the batch. Pre-shipment inspection covers roll-to-roll comparison, and a batch consistency report is included with dispatch documentation so you know what to expect when the material arrives.
Q: What UV treatment is applied, and is there a test report available?
A: UV treatment is available as a customized option, but the specific test basis is not stated in standard documentation. If your market or installation environment requires a defined UV resistance level, request the test report and confirm the grade during the quotation stage before production begins.
