Precision Coating Control — Every roll of this 550gsm 0.45mm PVC coated tarpaulin is weighed and measured in-line during production to confirm the coating-to-base-fabric ratio matches the quoted specification before it leaves the factory.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Weight | 550gsm |
| Total Thickness | 0.45mm |
| Base Fabric Denier Options | 200D×300D, 500D×500D, 840D×840D, 1000D×1000D |
| Coating Material | PVC |
| Surface Finish | Available in glossy or matte |
| Colour | Black (additional colours available on request) |
| Temperature Range | -15°C to 70°C |
| Waterproof | Fully waterproof coated construction |
| UV Treatment | Available — confirm the test basis required for your market |
| Flame Retardant | Available — confirm the grade required for your market |
| Anti-Fungal | Treated |
| Size Options | 3x4m, 6x8m, 8x10m, 10x12m or custom dimensions |
| Standards | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Aquaculture pond liner | Permanent water immersion, soil chemistry contact, puncture from substrate irregularities |
| Fish farming tank cover | Constant moisture, UV exposure, frequent handling during feeding and harvest cycles |
| Agricultural water containment | Seasonal temperature swings, algae and fungal growth, mechanical abrasion from debris |
| Reservoir and irrigation lining | Hydrostatic pressure, long-term UV, edge anchoring stress at perimeter fixings |
Why the 550gsm PVC Coated Tarpaulin Material Properties Matter More Than the Label
GSM without verified coating weight is just a number on a quotation.
When a buyer specifies 550gsm for a pond liner application, what they actually need is a predictable ratio between the base fabric denier and the PVC coating mass. A roll that hits the target weight through a heavier base fabric but a thinner coating will behave very differently under hydrostatic load than one where the coating carries the waterproofing burden. In our experience inspecting coated fabric deliveries, discrepancies between quoted and actual coating weight are among the most common causes of early liner failure in aquaculture installations. [NEED_CITE: common causes of PVC coated fabric failure in containment applications]
Coating Weight Verification at Every Stage
The 550gsm PVC coated tarpaulin material properties are controlled through a three-stage process: incoming base fabric is weighed before coating, the coating formulation is metered by knife-over-roll application, and the finished roll is sampled at set intervals across the full width. This means the GSM figure on the material specification sheet reflects measured values, not a batch average. For technical buyers evaluating 550gsm PVC coated tarpaulin material properties against competing quotations, this level of in-process documentation is what separates a verifiable specification from a marketing claim.
Denier Selection and Its Effect on Containment Performance
The base fabric denier range — from 200D×300D through to 1000D×1000D — directly governs how the 550gsm PVC coated tarpaulin behaves when stretched across a pond frame or anchored into a reservoir bank. Lower denier fabrics offer better drape and easier fabrication for complex shapes, while higher denier options resist tear propagation when the liner is pulled taut over uneven ground. [NEED_CITE: tensile and tear test methods for coated fabrics per ISO 1421] The coating method and weight remain constant across denier options, so the waterproofing integrity is maintained regardless of which base fabric is selected. This allows fabricators to optimise for the mechanical demands of each installation without compromising the barrier function.
Temperature Range and Seasonal Aquaculture Environments
The -15°C to 70°C service range covers the full seasonal swing encountered in most outdoor aquaculture operations. At the lower end, the PVC formulation resists embrittlement that would cause cracking when the liner is handled or repositioned in cold conditions. At the upper end, the coating maintains dimensional stability under direct summer sun without softening to the point where anchor fixings pull through. The anti-fungal treatment addresses the biological growth that accelerates on any surface in permanent contact with nutrient-rich water, reducing the cleaning burden between production cycles.
The Hidden Cost of Specifying Without Full Data
A 550gsm roll that arrives lighter than quoted does not just underperform — it shifts the failure point from the fabric body to the welded seams, because the thinner coating cannot achieve the same bond strength during heat welding. When seams fail before the fabric itself, the entire liner must be drained, retrieved and repaired on site, costing far more than the price difference between a verified and an unverified roll. Colour variation between rolls in the same order is equally damaging for visible installations: a pond liner that shows two distinct shades of black when laid side by side signals inconsistent coating formulation, which often correlates with uneven UV treatment distribution. [NEED_CITE: relationship between coating consistency and weld seam strength in PVC tarpaulins]
Why Source This Grade Through Jinan Jinxiang
Our production lines are configured for coated fabric specifically, not adapted from general-purpose textile equipment, which gives tighter control over knife gap and coating weight uniformity across the full roll width. The R&D team develops custom samples within days when a project requires a specific denier and finish combination that is not in standard stock. Every dispatch is backed by 100% pre-shipment inspection with a documented weight-per-roll record, so the buyer receives verification rather than assurances. Nearly 30 years of continuous coated fabric production has refined the process controls that keep roll-to-roll consistency within specification. The QA protocol checks coating adhesion at multiple points along each roll, catching lamination defects before they reach the fabrication stage.
Documentation & Verification
- Material specification sheet stating exact 550gsm weight, selected base fabric denier and coating method
- UV and flame retardant test reports supplied with the applicable standard and grade clearly identified
- Weight verification record per roll measured against the stated GSM before dispatch
- ISO and CE certificates included with every shipment
- Certificate of origin and customs documentation prepared for cross-border delivery
Fabrication, Handling & Storage
- Heat welding temperature and dwell time must be adjusted to the glossy or matte surface finish selected
- Store 550gsm rolls upright on a flat surface to prevent permanent creasing across the coating layer
- Cut panels should be welded within days of cutting to avoid dust contamination at the seam interface
- Avoid dragging the black PVC coated surface over abrasive substrates during pond liner installation
- Clean with mild detergent only — solvent-based cleaners can degrade the anti-fungal treatment layer
- Allow rolls to acclimatise to ambient temperature before unrolling to prevent coating micro-cracking in cold conditions
What We Need to Prepare Your Quotation
To specify the right denier and finish for your application, share the installation environment — whether the liner will sit in a lined concrete basin or be anchored directly into soil — and the expected water depth. Confirm whether your local regulations require a specific flame retardant grade for agricultural containment structures. Let us know the required roll width and whether you need factory-cut panels or full rolls for on-site fabrication, and we will prepare a material specification sheet with the matching test documentation.
Frequently Asked Questions
Q: How is the 550gsm weight verified before shipment?
A: Each roll is sampled at multiple points across its width and weighed on calibrated scales. The measured values are recorded on a pre-shipment inspection report that accompanies the dispatch. This report distinguishes between base fabric weight and total coated weight, so you can confirm the coating mass matches the specification.
Q: Which base fabric denier suits a permanent pond liner versus a temporary cover?
A: For permanent pond liners subject to hydrostatic load and substrate puncture risk, higher denier options such as 840D×840D or 1000D×1000D provide greater tear resistance. Temporary covers and tank wraps benefit from the lower denier options which offer better flexibility and easier handling during repeated installation and removal cycles.
Q: What test basis supports the anti-UV claim for outdoor aquaculture use?
A: UV treatment is applied during the coating formulation stage and can be documented against specific test standards upon request. When placing an inquiry, specify the UV exposure duration and the test standard required by your market so we can confirm the treatment grade and supply the corresponding test report with the shipment.
Q: How does the PVC coating formulation affect weld seam strength?
A: The coating weight and formulation determine the heat welding parameters needed for a reliable bond. The 550gsm grade carries sufficient coating mass to produce a strong welded seam when the correct temperature and dwell time are applied. Glossy and matte finishes may require slight parameter adjustments, which our technical team can advise based on your welding equipment.
