Description
Volume Consistency — every roll verified against stated GSM before dispatch, with pre-shipment inspection records provided for aquaculture and water containment projects.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin for Fish Pond |
| Material | PVC + High-strength polyester mesh fabric |
| Coating Method | Laminated technology & Hot-melt Coating technology |
| Weight (GSM) | 350gsm / 420gsm / 500gsm / 550gsm / 600gsm / 750gsm (confirm grade for your application) |
| Total Thickness | 0.32mm / 0.35mm / 0.4mm / 0.45mm / 0.5mm / 0.65mm (confirm grade for your application) |
| Roll Width | 2m / 2.1m |
| Roll Length | 75m / 50m |
| Finish Product Size | Custom items as per customer’s needs, or sold by inventory |
| Color Options | Blue / Red / Yellow / Light blue / Grey (Customized) |
| Key Features | Waterproof, cold crack resistance, anti-mildew, outstanding tearing strength for welding, best color fastness |
| Special Treatments | Flame retardant, anti-static, anti-cold, anti-mildew, 3P (confirm grade required for your market) |
| Service Life | 3-7 years under normal circumstances |
| Certification | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Aquaculture fish ponds | Permanent water immersion, soil chemistry contact, puncture risk from substrate |
| Shrimp and prawn farming | Saline water exposure, frequent cleaning cycles, biofouling resistance |
| Agricultural water reservoirs | UV exposure, seasonal temperature cycling, large surface area containment |
| Ornamental landscape ponds | Aesthetic color consistency, long-term water retention, root penetration resistance |
| Irrigation storage tanks | Hydrostatic pressure at depth, mechanical abrasion from inlet and outlet fittings |
Why Roll Weight Variations Undermine Pond Liner Projects
Weight verification on every roll eliminates the gap between quotation and delivered material.
Sourcing PVC coated tarpaulin for fish pond construction by the roll often reveals a familiar pattern: the GSM stated on the commercial invoice does not match what arrives on site. Material arrives lighter than agreed, and the pond liner ends up thinner at the seams where hydrostatic pressure concentrates. Operators discover the shortfall only after welding panels together and filling the pond, when leaks appear at flex points. [NEED_CITE: tensile and tear test methods for coated fabrics per ISO 1421]
Roll-to-Roll Color Control Across Bulk Shipments
When multiple PVC pond liner roll units are installed side by side in a single aquaculture facility, visible color variation between rolls creates an uneven appearance across the water surface. Batch consistency in pigmentation requires controlled coating temperatures and standardized dye lot management during production. Our process maintains color reference standards across an entire order, so adjacent panels match once deployed in the pond.
Hot-Melt Coating Adhesion for Welded Seam Integrity
The hot-melt coating technology used in this PVC coated tarpaulin for fish pond applications creates a mechanical bond between the PVC layer and the polyester mesh base fabric. This adhesion directly affects how well welded seams hold under continuous water pressure. When the coating delaminates from the base fabric, the weld line separates before the fabric itself reaches its tearing limit. [NEED_CITE: coating adhesion and peel strength testing for laminated fabrics]
How GSM and Base Fabric Density Define Liner Performance
GSM alone does not predict how a pond liner will perform under load. The weight combines the base polyester fabric density and the PVC coating mass, and each component contributes differently to the final behavior. A higher coating weight improves waterproofing and abrasion resistance at the pond floor, while the base fabric denier and weave density determine how the material resists tearing when a puncture starts. Hot-melt coating and laminated technology influence how well the two layers work together — poor adhesion means the coating cracks independently of the mesh when the liner flexes under water weight. Roll widths of 2m and 2.1m affect how many welded seams are needed to cover a given pond surface area, and fewer seams mean fewer potential failure points in the finished installation.
What Happens When Seam Welding Parameters Miss the Mark
Welded seams in pond liners carry the full hydrostatic load at the joints, yet the welding temperature and dwell time must match the specific coating formulation of the material. Too much heat burns through the PVC and weakens the polyester mesh below. Too little heat leaves a surface bond that peels apart when the pond is filled and the substrate shifts. Operators who use generic welding settings across different PVC coated tarpaulin for fish pond batches often see seams fail within the first filling cycle. [NEED_CITE: hot air welding parameters for PVC coated polyester fabrics]
Why Procurement Volume Matters for Roll Stock Orders
Buying PVC pond liner roll stock at container volume gives leverage on batch consistency and delivery scheduling. Our three full production lines and 36 sets of professional equipment support bulk roll output without sacrificing the weight verification and color control that individual rolls receive. A 10-person R&D team handles custom width and color development, with samples produced within days for approval before the main run begins. Dedicated QA/QC operates at every production stage, and every roll undergoes inspection before it leaves the facility. The 9,180 m² production space at Jinan Jinxiang supports simultaneous runs across multiple GSM grades for aquaculture buyers managing diverse pond depths.
Documentation & Verification
- Material specification sheet stating GSM, base fabric denier, and PVC coating weight per roll
- Pre-shipment inspection record with verified weight per roll against the quoted GSM
- Roll packing list showing roll count, net weight, and batch reference for container loading
- Certificate of origin and customs documentation for international shipment clearance
- Test reports for flame retardant and anti-static grades where applicable to the order
Fabrication, Handling & Storage
- Hot air welding temperature must match the laminated or hot-melt coating formulation to prevent delamination at seams
- Store rolls upright on end caps to avoid flat-spot deformation on the 2m or 2.1m width
- Unroll cold-weather stock gradually to prevent cracking, as anti-cold treatment extends the flexibility range
- Clean pond liner surfaces with neutral pH agents to preserve anti-mildew treatment and color fastness
- Plan panel cutting layout around the 75m or 50m roll length to minimize off-cuts and welded seam count
What We Need to Quote Your Pond Liner Project
Provide the pond dimensions, water depth, and substrate type so we can recommend the correct GSM grade from the 350gsm to 750gsm range. Specify your target roll width, color reference, and whether you need inventory rolls or custom production with a confirmed lead time. Confirm any fire-retardant or anti-static compliance required by your local aquaculture regulations. Let us know if you need samples for weld testing before committing to the full roll order.
Frequently Asked Questions
Q: How is GSM verified per roll and what documentation accompanies shipment?
A: Every roll is weighed and measured before dispatch to confirm it meets the stated GSM on the material specification sheet. A pre-shipment inspection record accompanies the shipment, showing verified weight per roll alongside the roll packing list with batch references and net weights for container loading calculations.
Q: What roll widths and lengths are available, and how are they packed for container loading?
A: Stock roll widths are 2m and 2.1m, with lengths of 75m and 50m. Rolls are packed vertically on pallets or horizontal on end caps depending on container dimensions, with a roll packing list detailing count and weight for loading optimization.
Q: How is batch-to-batch color consistency controlled across multiple roll orders?
A: Pigment formulation and coating temperature are standardized per color reference, with batch samples retained for comparison against subsequent production runs. This ensures adjacent panels match when installed in the same pond facility.
Q: What welding and seam methods are recommended for on-site pond assembly?
A: Hot air welding is the standard method for joining PVC coated tarpaulin panels, with temperature and speed adjusted to the specific coating formulation. Overlap width and weld bead pressure must account for the hydrostatic load at the seam location.
Q: What is the MOQ for custom width or color, and how does lead time scale with volume?
A: Custom widths and colors carry minimums that vary by specification, with samples developed for approval before full production begins. Lead times depend on order volume and treatment requirements, confirmed at quotation stage.
