Description
Consistent Roll Weight — Every roll is weighed against the specification sheet before dispatch, ensuring the GSM you paid for is the GSM you receive.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Material | PVC + High-strength polyester mesh fabric |
| Weight (GSM) | 350gsm / 420gsm / 500gsm / 550gsm / 600gsm / 750gsm |
| Total Thickness | 0.32mm / 0.35mm / 0.4mm / 0.45mm / 0.5mm / 0.65mm |
| Coating Method | Laminated technology & Hot-melt Coating technology |
| Roll Size | 2m × 75m / 2.1m × 50m |
| Color | Blue, Red, Yellow, Light blue, Grey (customized) |
| Key Features | Waterproof, cold crack resistance, anti-mildew, anti-static treatment (standard not stated in source), flame retardant available as special treatment (grade not stated in source) |
| Service Life | 3–7 years under normal circumstances (source value — verify against manufacturer catalog) |
| Certification | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Fish pond liner | Permanent water contact, soil chemistry, puncture risk from substrate, long-term submersion stability |
| Fish tank and pool | Constant water pressure, welded seam integrity, resistance to algae and biological growth |
| Agricultural water containment | UV exposure on surface, freeze-thaw cycles, abrasion from earthen banks |
| Tent cover | Wind load, repeated assembly stress, weather exposure across seasons |
| Truck awning and lorry tarpaulin | Road vibration, flexing at load points, abrasion against cargo edges |
Why GSM Alone Does Not Tell You How Strong the Pond Liner Will Be
Coating adhesion and base fabric density matter as much as the stated weight.
When a PVC coated tarpaulin roll arrives lighter than the quotation specified, the immediate concern is cost. But the deeper problem shows up months later at the weld seam, where the liner flexes against the pond floor. A roll that hits the target GSM but uses a thinner base yarn will still tear when the substrate shifts [NEED_CITE: tensile and tear test methods for coated fabrics per ISO 1421]. Wholesale buyers stocking multiple grades need to verify not just weight but the construction behind it — the polyester mesh denier, the weave density, and how the coating bonds to the yarn.
Stocking Multiple GSM Grades for Aquaculture Projects
Commercial fish pond operations rarely use a single liner weight across every installation. A nursery pond with shallow water and soft substrate calls for a lighter grade, while a grow-out pond with deeper water and rocky ground demands a heavier construction. This PVC coated tarpaulin roll range covers 350gsm through 750gsm, letting wholesale buyers build a tiered inventory that matches project specifications without sourcing from multiple mills. Each grade pairs with a corresponding thickness from 0.32mm to 0.65mm, so the material handling characteristics stay predictable across the product family.
Roll Dimensions Engineered for Container-Load Dispatch
Standard roll sizes of 2m × 75m and 2.1m × 50m are dimensioned to maximize container utilization. For wholesale buyers consolidating a container load, the roll count and gross weight per container become the basis for landed-cost calculation. Consistent roll dimensions mean predictable loading plans — no partial rolls filling gaps, no wasted cubic space. Custom widths are available with sample development before production runs begin [NEED_CITE: standard container dimensions for coated fabric roll shipping].
How Coating Method Affects Pond Liner Seam Integrity
Laminated and hot-melt coating technologies produce different adhesion profiles. Laminated coating bonds a PVC film layer to the polyester mesh under heat and pressure, delivering a smooth surface that resists water penetration. Hot-melt coating penetrates deeper into the mesh structure, creating a mechanical bond that performs well under repeated flexing — the exact condition a fish pond liner experiences as water levels rise and fall. The choice between the two affects how the material responds to heat welding at the seams, which is where most liner failures originate in the field.
What the Thickness Range Means for Substrate Contact
A 0.32mm liner handles gentle substrates — smooth concrete tanks, sand-lined ponds, or above-ground pool frames. A 0.65mm liner protects against angular rock, compacted clay with embedded gravel, and earthen banks that shift seasonally. Thickness alone does not guarantee puncture resistance; the base fabric weave density determines how a puncture spreads once initiated. Specifying both GSM and thickness together gives a clearer picture of how the PVC coated tarpaulin roll will perform once installed against the actual pond floor.
The Cost of Batch Inconsistency Across a Pond Installation
Colour variation between rolls in the same shipment becomes visible the moment two panels are welded side by side along a pond bank. For wholesale buyers supplying to aquaculture contractors, a colour mismatch on arrival means the installer either accepts an uneven appearance or rejects part of the shipment — both outcomes erode margin and delay the project [NEED_CITE: colour fastness and batch consistency standards for PVC coated fabrics]. Consistent colour across rolls in a single order is a function of coating batch control at the production stage, not a sorting exercise at the warehouse.
Why Fabrication Knowledge Matters Before You Order
Three full production lines with 36 sets of professional equipment support bulk roll output with stable coating weight across the run. A 10-person R&D team handles custom colour matching and sample development within days, so buyers can confirm material appearance and weld behaviour before committing to a container load. Dedicated QA/QC inspection at every production stage means each roll is checked against the material specification sheet before packing. The same team that develops the sample oversees the production run, reducing the gap between approval and delivery.
Documentation & Verification
- Material specification sheet stating exact GSM, base fabric and coating type for each roll grade
- Pre-shipment inspection record with weight verification per roll before dispatch
- Roll packing list with container loading plan by roll count and gross weight
- ISO and CE certificates accompanying each export shipment
- Certificate of origin and customs documentation for destination clearance
Fabrication, Handling & Storage
- Hot-melt coated rolls weld cleanly at standard RF or hot-air temperatures — test seam peel strength before full production
- Laminated rolls require controlled heat input to avoid delamination at the weld line
- Store rolls upright on pallets to prevent flat-spot deformation along the PVC surface
- Unroll in ambient temperatures above 5°C to avoid cold crack stress on the coating
- Cut with sharp blades to prevent fraying the polyester mesh at panel edges
What to Include in Your Inquiry
Provide the target GSM and the intended pond or tank application so the correct coating method can be recommended. Specify required roll widths, whether standard 2m or 2.1m stock works for your fabrication process, or if custom dimensions are needed. Confirm the colour reference and whether branding or pattern printing is required on the roll surface. Indicate the annual volume and preferred shipment consolidation so container loading can be planned accordingly.
Frequently Asked Questions
Q: How is GSM verified on each roll before shipment?
A: Every roll is weighed individually and compared against the material specification sheet stated for that grade. The pre-shipment inspection record documents the actual weight, and rolls that fall outside the tolerance are held back before dispatch. This eliminates the common problem of receiving material lighter than the quotation promised.
Q: What roll widths and lengths are stocked versus made to order?
A: Standard stock rolls are 2m × 75m and 2.1m × 50m, dimensioned for efficient container loading. Custom widths and lengths are produced to order with sample development beforehand. Lead times for custom dimensions depend on the specification complexity and the volume required for your container consolidation.
Q: How is colour consistency maintained across multiple rolls in the same order?
A: Rolls in a single order are coated from the same batch compound, and colour is checked at each production stage against the approved reference. This prevents the visible mismatch that occurs when panels from different production runs are welded side by side during pond liner installation.
Q: What are the container loading options by roll count and weight?
A: Roll count per container depends on the selected GSM grade and roll dimensions. A packing list with roll count, gross weight, and cubic volume is provided before dispatch so buyers can plan container consolidation and calculate landed cost per roll accurately.
Q: What is the MOQ for custom colour or printed rolls?
A: Minimum order quantities for custom colour or brand printing depend on the specific grade and the complexity of the print requirement. Samples are developed within days so buyers can confirm colour, print clarity, and coating adhesion before approving the full production run.
