Description
Consistent Roll Weight — every roll verified against the quoted GSM specification before dispatch, preventing short-weight material from reaching your warehouse.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Base Fabric | High-strength polyester mesh fabric |
| Coating Material | PVC |
| Coating Technology | Laminated technology & hot-melt coating technology |
| Weight Options | 350gsm / 420gsm / 500gsm / 550gsm / 600gsm / 750gsm |
| Thickness Options | 0.32mm / 0.35mm / 0.4mm / 0.45mm / 0.5mm / 0.65mm |
| Roll Width | 2m / 2.1m |
| Roll Length | 75m / 50m |
| Color Options | Blue, Red, Yellow, Light blue, Grey (custom colors available) |
| Key Features | Cold crack resistance, anti-mildew treatment, anti-static treatment, waterproof, UV resistant — confirm the specific grade required for your market |
| Flame Retardant | Available as special treatment — confirm the grade required for your market |
| Custom Sizing | Available per customer requirements |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Fish pond and aquaculture liner | Permanent water immersion, soil chemistry contact, puncture risk from substrate, UV exposure at waterline |
| Agricultural reservoir liner | Standing water retention, algae and mildew environment, thermal expansion and contraction |
| Tarpaulin distributor roll stock | Batch colour consistency across rolls, container-load volume efficiency, regional climate range |
| Inground pool winter safety cover | Seasonal UV and moisture exposure, debris load, repeated fold-and-store cycles |
Why Colour Drift Between Rolls Costs More Than You Think
Batch-to-batch colour control is the difference between a liner that looks engineered and one that looks patched together.
When two panels from different rolls are heat-welded side by side on a pond site, even a slight hue shift becomes visible across the seam line. The problem compounds when a distributor pulls stock from different production runs to fill a single order. Buyers who specify PVC coated tarpaulin roll wholesale quantities expect visual uniformity, yet colour variance remains one of the most common complaints once the material is unrolled and laid out [NEED_CITE: colour consistency standards for coated fabric per ISO 105 series].
Roll Stock Grading for Pond and Reservoir Depth
The weight range from 350gsm through 750gsm covers shallow nursery ponds through to deeper reservoirs where hydrostatic pressure and substrate irregularity demand heavier construction. Thinner grades suit temporary or seasonal aquaculture setups, while the heavier end of the range provides the puncture margin needed over rocky or uneven ground. Selecting the correct GSM grade at the enquiry stage avoids both over-specification and premature field failure.
Hot-Melt Coating and Weld Seam Integrity
Hot-melt coating technology bonds the PVC layer to the polyester mesh at elevated temperature, producing adhesion strength that holds through repeated thermal cycling. For pond liner fabrication, this matters most at the weld seams where panels join. Laminated construction adds a secondary bond layer that resists delamination when the liner flexes under water load or settling ground movement.
How Coating Method and Base Fabric Define Liner Performance
The polyester mesh base fabric provides the dimensional stability that keeps a pond liner flat against the substrate without excessive stretching during installation. Coating weight and method together determine how the material behaves at the weld line: hot-melt coated fabric typically achieves stronger peel adhesion at seams compared to simple knife-over-roll application, which directly affects whether the weld or the fabric fails first under stress. Roll widths of 2m and 2.1m with lengths up to 75m allow fabricators to cover larger pond footprints with fewer transverse seams, reducing both labour and potential leak points. The anti-mildew treatment addresses the biological environment of standing water, while cold crack resistance ensures the material remains pliable during installation in cooler climates [NEED_CITE: coated fabric cold crack test methodology].
The Hidden Cost of Under-Specified Roll Stock
A liner that looks adequate on the quotation can fail at the weld within a single season if the GSM grade is too light for the pond depth and substrate. Buyers focused solely on roll price often discover that seam separation, colour inconsistency between panels, or inadequate UV treatment leads to full replacement far sooner than expected. When an aquaculture operator loses stock due to liner failure mid-cycle, the cost of the fabric becomes the smallest line item in the loss calculation [NEED_CITE: common failure modes in flexible pond liners].
Why Procurement Teams Source Roll Stock Here
Three full production lines and 36 sets of professional equipment support bulk roll output with stable lead times across GSM grades. A dedicated 10-person R&D team handles colour matching against Pantone or physical samples before production begins, reducing the risk of batch drift. Every roll undergoes inspection against the specification sheet before packing, with weight and thickness verified per the quoted grade. Custom widths and colours are produced on the same lines as stock grades, meaning batch consistency does not depend on order size. ISO and CE certified production provides the documentation trail that importers need for customs and compliance.
Documentation & Verification
- Material specification sheet stating GSM, base fabric denier, coating weight and colour reference per roll
- Weight verification per roll against the stated GSM before dispatch
- UV and anti-mildew test report where treatment has been specified on the purchase order
- Pre-shipment inspection record with roll numbers traceable to production batch
- Certificate of origin and customs documentation for container shipment
Fabrication, Handling & Storage
- Heat-weld parameters should be adjusted to the specific GSM grade and coating thickness of the roll being joined
- Store rolls horizontally on pallets to prevent flat-spot deformation on the polyester mesh core
- Unroll and allow material to relax at ambient temperature before welding in cold conditions to preserve cold crack resistance
- Cut panels with allowance for thermal expansion across the 2m or 2.1m width in outdoor pond installations
- Use compatible PVC solvent or hot-air welding for seam joins — adhesive bonding alone is insufficient on hot-melt coated surfaces
What to Include in Your Enquiry
Specify the intended application — whether pond liner, reservoir cover, or distributor stock — along with the target GSM grade and any required treatments such as flame retardant or anti-static. Confirm the roll width, colour reference or Pantone code, and estimated annual volume so we can advise on production scheduling and container loading plans. If you require custom sizing or brand printing on the roll, include those details at the enquiry stage for accurate lead time quotation.
Frequently Asked Questions
Q: What GSM grade is recommended for fish pond versus reservoir use?
A: Shallow aquaculture ponds typically use lighter grades in the 350gsm to 500gsm range, while deeper reservoirs and lined dams benefit from 600gsm or 750gsm to resist puncture from substrate irregularity and hydrostatic pressure. The correct grade depends on pond depth, soil condition and expected service environment. Request a specification recommendation based on your project dimensions.
Q: How is colour consistency maintained across multiple rolls in one order?
A: All rolls within a single order are produced from the same coating batch using a matched colour formula verified against the approved reference. Pre-shipment inspection includes visual comparison under standard lighting. For repeat orders, the original colour formula is retained to maintain consistency across production runs.
Q: Can custom widths or colours be ordered, and what are the minimums?
A: Custom colours matched to Pantone or physical samples and non-standard widths are available. Minimum order quantities depend on the colour and width requested. Custom production runs on the same coating lines as stock grades, so material properties remain consistent. Submit your colour reference and required dimensions for a production assessment.
Q: What documentation ships with the roll?
A: Each shipment includes a material specification sheet stating GSM and coating details, pre-shipment inspection records with roll traceability, test reports for specified treatments, certificate of origin, and packing list with roll count and weight. Additional documentation can be arranged based on destination country requirements.
Q: How are rolls packed and loaded for container shipment?
A: Rolls are packed on pallets in horizontal orientation to prevent deformation. Container loading plans are prepared by roll count and total weight to maximise utilisation. The packing list details roll numbers, dimensions and weights for receiving verification at destination.
