Proven Coating Consistency — Laminated and hot-melt coating processes deliver uniform PVC adhesion across every roll, supporting reliable weld strength and predictable performance in specialist structures and ventilation ductwork.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Material | PVC + High-strength polyester mesh fabric |
| Coating Method | Laminated technology & Hot-melt Coating technology |
| Weight (GSM) | 350gsm / 420gsm / 500gsm / 550gsm / 600gsm / 750gsm |
| Total Thickness | 0.32mm / 0.35mm / 0.4mm / 0.45mm / 0.5mm / 0.65mm |
| Roll Width | 2m / 2.1m |
| Roll Length | 75m (2m width) / 50m (2.1m width) |
| Colour Options | Blue / Red / Yellow / Light blue / Grey (custom colours available) |
| Waterproof | Yes |
| Anti-Mildew | Yes |
| Cold Crack Resistance | Yes |
| Flame Retardant | Available — confirm the grade required for your market |
| Anti-Static | Available — confirm surface resistance standard for your application |
| UV Treatment | Available — confirm test basis for your exposure conditions |
| Colour Fastness | High colour fastness (test standard available on request) |
| Standards | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mining and tunnelling ventilation duct | Continuous airflow, abrasive dust, fire-retardant and anti-static compliance for underground safety audits |
| Inflatable and membrane structure fabric | Tensile load from internal pressure, UV and weather exposure, airtight weld seams |
| Aviation ground ventilation duct | Fuel-adjacent environment, anti-static requirement, frequent deployment and collapse cycles |
| Construction site temporary enclosure | Wind load, scaffolding abrasion, rain and dust containment over multi-month projects |
| Industrial equipment covers | Chemical splash, outdoor weathering, repeated removal and reinstallation stress |
What Certified Fire-Retardant and Anti-Static Really Means for Ventilation Fabric
Every roll ships with the test report and certificate referenced to its production batch — not a generic document.
Ventilation duct and specialist structure projects regularly stall when the fabric arrives without the compliance documentation the site safety officer demands. A PVC coated tarpaulin roll specified for underground mining or aviation maintenance must carry a fire-retardant grade and anti-static measurement that match the local regulation, not a supplier’s general claim. When test reports are missing or untraceable to the batch, the entire installation can fail inspection after fabrication is already complete. [NEED_CITE: fire classification standards for flexible ventilation duct materials in underground mining]
Matching GSM Grade to Duct Diameter and Structural Load
The correct weight selection depends on the duct diameter, internal pressure, and handling frequency. Lighter grades in the 350gsm to 420gsm range suit temporary ventilation runs where the duct is deployed and collapsed frequently. Heavier grades from 600gsm to 750gsm hold their shape under sustained airflow pressure and resist abrasion from rock dust in tunnelling applications. Selecting the PVC coated tarpaulin roll grade starts with the airflow requirement and the regulatory fire classification your site mandates, not with cost alone.
How Coating Technology Determines Weld Integrity in Fabricated Ducts
Laminated and hot-melt coating methods both produce a continuous PVC skin over the polyester mesh base, but they behave differently at the weld seam. Hot-melt coating penetrates the yarn structure more deeply, which can improve peel strength when high-frequency welding joins two panels. Laminated construction delivers a smoother surface that is easier to clean and inspect for pinholes. For inflatable structures and ventilation ducts where seam failure means total loss of pressure, the coating method must align with the welding equipment and parameters used on the fabrication floor. [NEED_CITE: peel strength test methods for welded PVC coated fabrics per ISO 1421]
Reading Weight and Thickness Together for Structural Predictability
GSM alone does not define how a fabric will perform under tension. A 550gsm roll at 0.45mm thickness has a different base fabric density and coating ratio than a 550gsm roll at 0.5mm thickness. The polyester mesh denier and weave count determine how much load the yarns carry before the PVC coating takes over. Thickness influences stiffness and cold crack behaviour — a thicker coating resists crease damage in low temperatures but adds roll weight that affects container loading. When specifying PVC coated tarpaulin roll for membrane structures, both values must be reviewed against the engineering load calculation.
When the Wrong Specification Reaches the Fabrication Floor
A ventilation duct fabricated from a roll that lacks the required anti-static surface resistance will pass visual inspection but fail the site safety audit before commissioning. Colour variation between rolls in the same membrane structure becomes visible only after panels are welded and inflated side by side. A coating weight lighter than the specified grade may weld successfully at standard parameters yet peel apart under the cyclic pressure of a running ventilation fan. These failures are not caught in the supplier’s warehouse — they surface on site, after freight and fabrication costs are already sunk. [NEED_CITE: anti-static surface resistance measurement standards for flexible duct materials]
Why Procurement Teams Return for Repeat Specialist Orders
Three full production lines with 36 sets of professional equipment support consistent output across large-volume roll orders, reducing batch-to-batch variation that disrupts fabrication settings. A dedicated 10-person R&D team develops custom specifications combining flame retardant, anti-static, and anti-mildew treatments in a single fabric, with samples produced within days for approval before production. QA and QC checkpoints at every production stage with full pre-shipment inspection ensure that the roll leaving the factory matches the material specification sheet you signed off. The hot-melt and laminated coating processes are controlled in-house, so coating weight and adhesion strength remain traceable from raw material to finished roll.
Documentation & Verification
- Material specification sheet stating GSM, base fabric denier, coating method, and colour reference per roll
- Test report for flame retardant grade issued against the specific production batch
- Anti-static surface resistance measurement report referenced to the order batch number
- ISO and CE certificates with pre-shipment inspection record
- Roll packing list with individual roll weight for container loading verification
- Certificate of origin and customs documentation support
Fabrication, Handling & Storage
- High-frequency welding parameters should be adjusted to match the selected GSM and coating method for consistent seam peel strength
- Store rolls upright on pallets to prevent flat-spotting and permanent crease marks on the PVC surface
- Allow cold-stored rolls to reach ambient temperature before unrolling to avoid coating crack in low GSM grades
- Use compatible PVC-based adhesive for field repairs on laminated coating surfaces to maintain bond integrity
- Plan panel layout to minimise cross-direction welds, which carry higher peel stress in membrane and duct applications
- Clean with mild detergent only — solvent-based cleaners can degrade the anti-mildew treatment layer
Preparing Your Specification Request
Provide the duct diameter or structure dimensions, the fire-retardant grade and anti-static standard required by your local regulation, and the annual volume to confirm roll availability and batch consistency. Specify whether you need raw rolls in stock widths or pre-cut panels with welded hems. If colour matching or custom treatment combinations are required, request a sample for fabrication trial before committing to full production.
Frequently Asked Questions
Q: What fire-retardant grade can you certify, and does it meet my country’s mining or tunnelling regulation?
A: Flame retardant treatment is available in grades that can be confirmed against your local mining or construction code. Share the specific standard or classification your site safety officer requires, and the applicable test report will be issued against your production batch. Our R&D team can advise on grade selection based on your application and regulatory environment.
Q: How is anti-static performance measured, and what surface resistance value will appear on the test report?
A: Anti-static treatment is measured by surface resistance, and the value is recorded on the batch test report. The acceptable range depends on your application — aviation and mining environments typically specify different thresholds. Provide your required standard or surface resistance range, and we will confirm achievability before production begins.
Q: How do I verify the GSM on arrival matches the quotation for my specified grade?
A: Each roll is inspected and weighed before dispatch, with the individual roll weight recorded on the packing list. The material specification sheet states the agreed GSM, base fabric denier, and coating weight. You can cross-reference the packing list against your purchase order to confirm that the delivered material matches the specified grade.
Q: Can you develop a custom specification combining flame retardant, anti-static, and anti-mildew in one fabric?
A: Yes, the R&D team can formulate a single PVC coated tarpaulin roll with multiple treatments applied during coating. Samples are developed within days for your fabrication trial and weld testing. Once the sample is approved, production runs follow the same specification with batch-referenced test documentation for each treatment.
Q: What roll widths and lengths are available, and how are rolls packed for container loading?
A: Standard roll widths are 2m at 75m length and 2.1m at 50m length. Custom widths and lengths are available subject to production line capability. Rolls are packed upright on pallets with a detailed packing list showing roll count and weight per pallet to support your container loading plan and customs documentation.
