Precision-coated technical fabric — every roll verified at the coating head for GSM and adhesion before winding, ensuring compliance documentation matches the material you receive.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin |
| Material | PVC coated on high-strength polyester mesh fabric |
| Weight | 620 gsm |
| Total Thickness | 0.45 mm |
| Roll Width | 2 m / 2.1 m |
| Roll Length | 75 m (2 m width) / 50 m (2.1 m width) |
| Color Options | Blue, Red, Yellow, Light Blue, Grey (customized options available) |
| Surface Finish | Glossy surface or matt surface |
| Coating Technology | Laminated technology & hot-melt coating technology |
| Waterproof | Double-sided fully waterproof |
| Cold Crack Resistance | Yes |
| Anti-Mildew | Yes |
| Anti-Static | Yes (grade not stated — confirm the rating required for your site) |
| Flame Retardant | Available in flame retardant grades — confirm the grade required for your market |
| Anti-UV | Available with UV treatment — confirm test basis for your application |
| Color Fastness | Best color fastness (test standard not stated) |
| Custom Printing | Available |
| Custom Size | Available per customer requirements |
| Standards | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mining & tunnelling ventilation duct | Constant flex under positive pressure, abrasive dust, mandatory fire-retardant and anti-static compliance |
| Aviation ground support ducting | Fuel fume proximity, repeated deployment and packing, flame-retardant certification required |
| Inflatable & membrane structure fabric | Sustained inflation pressure, UV and weather cycling, welded seam integrity at stress points |
| Temporary industrial enclosure | Wind load, chemical splash, rapid deploy and dismantle |
| Scaffolding & building enclosure | Weather barrier, scaffold tie-in abrasion, wind uplift |
| Marine & offshore maintenance cover | Salt spray, UV, mechanical handling |
What "Fire Retardant" Really Means When No Grade Is Quoted
A test certificate without a stated classification standard is just a piece of paper.
Ventilation duct supplied without the fire-retardant or anti-static certification the site requires shuts down operations and triggers rework [NEED_CITE: mining authority fire safety compliance for underground ventilation ducting]. Procurement teams often receive PVC coated tarpaulin roll fire retardant / anti-static / certified material only to discover the accompanying report references an unspecified internal test rather than a recognised classification such as M2, B1, NFPA 701 or DIN 4102. The material passes the supplier’s lab but fails the site inspector’s checklist. For mining and tunnelling contractors, this gap between quotation language and compliance documentation can halt an entire ventilation installation until replacement fabric arrives.
Coating Adhesion Determines Duct Seam Life
Hot-melt coating technology bonds the PVC compound into the polyester mesh rather than sitting on the surface as a separate film. This penetration matters when the fabric is cut into duct panels and the seams are heat-welded: the weld line must match or exceed the parent fabric strength. Laminated technology provides an alternative construction where coating weight and base fabric are independently controlled. Both methods are available across this PVC coated tarpaulin roll fire retardant / anti-static / certified range, and the choice depends on the seam performance your duct design demands.
Anti-Static Compliance for Underground and Confined-Space Environments
Static charge accumulation on duct surfaces in dry, dusty mine atmospheres is a documented ignition pathway [NEED_CITE: anti-static surface resistance requirements for underground ventilation fabric]. This product family includes anti-static treatment options, but the surface resistance rating and test method must be confirmed against your local mining authority’s threshold before committing to roll quantities. Request the measurement certificate alongside the fire-retardant report so both arrive with the same shipment.
Reading the Specification Sheet Beyond the GSM Number
A 620 gsm fabric sits in the mid-to-heavy range of the product family, but weight alone does not define performance. The high-strength polyester mesh base fabric provides the tensile and tear backbone; the PVC coating adds waterproofing, chemical resistance, and the surface characteristics needed for welding. A thicker coating does not automatically mean higher tear strength — if the base fabric denier and weave density are low, the coating carries load it was never designed to bear. When specifying PVC coated tarpaulin roll fire retardant / anti-static / certified fabric for duct or membrane work, request the base fabric denier, weave count, and coating weight breakdown rather than accepting a single GSM figure. Hot-melt coating typically delivers higher peel strength at the weld than simple lamination, which matters for inflatable structures that cycle between inflation and storage. The glossy or matt surface choice affects more than appearance: glossy surfaces shed dust and wash clean more readily in offshore or processing plant environments, while matt surfaces reduce glare on membrane structures exposed to direct sunlight.
The Hidden Cost of Specification Shortfalls in Duct and Structure Fabric
When flame-retardant grade is assumed rather than verified, the duct passes factory inspection but fails on-site the moment the safety officer requests documentation [NEED_CITE: fire classification standards for flexible ventilation duct in construction and mining]. Anti-static fabric that lacks a measured surface resistance value leaves the contractor unable to demonstrate compliance to the mine ventilation engineer. Colour variation between rolls in a membrane structure order becomes visible once panels are installed side by side — a problem that forces selective re-cutting and wastes material. Welded seams that fail before the fabric does point to a coating-to-base mismatch rather than a welding machine fault; the flex point on a duct bend is where this weakness surfaces first.
Why Technical Buyers Source This Range Here
Deep process control over coating weight and adhesion means the GSM stated on the quotation is the GSM on the roll — verified at every coating stage, not sampled after the fact. Three full production lines and 36 sets of equipment support the bulk capacity that duct fabricators and membrane structure builders need for project-scale orders with reliable on-time delivery. A 10-person R&D team handles material selection, custom width slitting, and sample development within days rather than weeks, so you can test weld parameters on actual roll stock before committing to production quantities. Dedicated QA/QC at every production stage with full pre-shipment inspection catches coating weight drift, colour shift, and surface defects before the rolls are packed. The documentation package — specification sheet, test reports, certificate of origin — ships with the order rather than arriving weeks later by email.
Documentation & Verification
- Material specification sheet stating 620 gsm, base fabric denier, coating method and weight breakdown
- Fire-retardant test report with stated grade — request the classification standard before dispatch
- Anti-static surface resistance measurement certificate matched to mining authority threshold
- Pre-shipment inspection record confirming weight, colour and surface quality per roll
- Certificate of origin and customs documentation for export shipment
- Roll packing list with individual roll dimensions and net weight
Fabrication, Handling & Storage
- Hot-melt coated fabric tolerates standard hot-air and wedge welding — validate temperature on a sample offcut of the 0.45 mm construction first.
- Store rolls horizontally on racking to avoid flat spots on the 2 m or 2.1 m width that transfer into the duct panel cutting layout.
- Allow cold-stored rolls to reach workshop temperature before unrolling to prevent coating micro-cracking on the polyester base.
- Cut duct panels with allowance for weld overlap; the 75 m roll length at 2 m width supports efficient nesting with minimal cross-seams.
- Clean glossy surface variants with mild detergent only — solvent-based cleaners can soften the PVC coating and reduce weld integrity.
Before You Request a Quote
Provide the ventilation duct diameter range and operating pressure so we can confirm the 620 gsm grade matches your tensile and flex requirements. State the fire-retardant classification your site authority mandates — M2, B1, NFPA 701 or DIN 4102 — along with any anti-static surface resistance threshold. Specify roll width preference, colour requirement, and whether you need printed branding or panel numbering on the outer surface.
Frequently Asked Questions
Q: What fire-retardant grades are available and which test certificates accompany each?
A: Flame-retardant treatment is available across this PVC coated tarpaulin roll fire retardant / anti-static / certified range in multiple classification grades. Before placing your order, confirm whether your project requires M2, B1, NFPA 701 or DIN 4102 certification. We provide the corresponding test report with the stated grade and test method alongside your shipment documentation.
Q: What is the anti-static surface resistance rating and does it meet mining authority requirements?
A: Anti-static treatment is available as an option, but the surface resistance value depends on the specific grade selected. Mining and tunnelling contractors should provide their authority’s threshold requirement so we can match the treatment and supply the measurement certificate with your documentation package.
Q: How is coating adhesion validated to ensure welded seams survive duct flex and pressure cycles?
A: Hot-melt coating technology penetrates the polyester mesh base, creating a mechanical bond that supports consistent heat-weld performance. Adhesion is verified during in-process QA at the coating stage. We recommend testing weld parameters on a sample piece of the 0.45 mm material before cutting full production panels.
Q: Can roll width and length be customised to match duct panel or structure pattern layouts?
A: Standard roll widths are 2 m by 75 m and 2.1 m by 50 m, but custom widths and lengths are available to reduce offcut waste in your duct panel nesting or membrane structure pattern. Provide your cutting layout so we can confirm the most efficient roll configuration for your production run.
Q: What compliance documentation ships with each order?
A: Every order includes a material specification sheet, pre-shipment inspection record, roll packing list, and certificate of origin. Fire-retardant and anti-static test reports are supplied when the corresponding treatment grade is specified. ISO and CE certificates are available as part of the documentation package.
