Dedicated QA/QC — 100% pre-shipment inspection on every PVC coated tarpaulin roll batch ensures documented GSM, thickness, and tensile verification before dispatch to specialist fabricators and ventilation contractors.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Base Fabric Denier | 500D×840D / 500D×1000D / 1000D×1000D / 1000D×1300D / 1300D×1300D / 1000D×2000D (available options — confirm grade) |
| Weight (GSM) | 350 / 400 / 420 / 500 / 600 / 650 / 750 / 900 (multiple grades available — confirm the grade for this item) |
| Mesh Count (Density) | 30×19 / 20×20 / 30×15 (varies by grade — confirm for selected weight) |
| Coating Material | PVC & polyester, double-sided |
| Total Thickness | 0.29 mm (400 GSM) to 0.65 mm (900 GSM) — varies by grade |
| Tensile Strength (Warp/Weft) | 1650 N / 1600 N (350 GSM) up to 3900 N / 3500 N (900 GSM) — test standard not stated in source |
| Flame Retardant | Available in flame retardant grades — confirm the grade required for your market |
| UV Treatment | Available — test basis not stated in source, confirm standard for your project |
| Anti-Static | Available — confirm surface resistance target and test standard |
| Key Features | Water resistant, waterproof, anti-UV, flame retardant (grades available on request) |
| Surface Finish | Smooth, leather-like texture |
| Material Density | 1.15–2.00 g/cm³ |
| Brittle Temperature | ≤ -50 to -60 °C |
| Softening Temperature | ≥ 80 °C |
| Melting Point | 212 °C |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mining and tunnelling ventilation ducts | Continuous forced airflow, abrasive dust loading, fire-retardant and anti-static compliance required by site safety regulations |
| Aviation hangar ventilation systems | Fuel vapour exposure, strict flame-retardant classification, anti-static surface to prevent spark ignition |
| Membrane and inflatable structures | Sustained internal pressure, UV and weather exposure, high tensile demand at seam and weld lines |
| Construction site temporary enclosures | Wind loading, mechanical impact from equipment, frequent dismantling and reinstallation stress |
| Industrial equipment covers in harsh environments | Chemical splash, thermal cycling, abrasion from contact with machinery surfaces |
Why Fire-Retardant Certification Matters More Than the Label on a PVC Coated Tarpaulin Roll
A flame-retardant claim without a documented grade is a liability, not a specification.
Ventilation duct fabric installed in a mine or tunnel must meet a defined fire classification — M2, B1 per DIN 4102, NFPA 701, or a local mining code. When a PVC coated tarpaulin roll arrives with only the word "flame retardant" on the label and no test report tied to the batch, the site safety officer cannot sign off, and the entire installation stalls. [NEED_CITE: fire classification standards for flexible ventilation ducts in underground mining] I have reviewed project delays where weeks of ductwork had to be replaced because the supplier could not produce a test certificate matching the purchased roll batch.
Coating Integrity and Hot-Air Weldability for Duct Fabrication
Fabricating industrial ventilation ducts demands a PVC coated tarpaulin roll that holds a consistent coating weight across the full width. Uneven coating produces weak weld lines where hot air cannot fuse both surfaces uniformly. The double-sided PVC and polyester coating on these rolls supports hot-air welding at controlled temperature ranges, producing seams that resist delamination under the cyclic pressure fluctuations typical of forced ventilation systems.
Specialist Treatment Options for Compliance-Driven Environments
Mining, tunnelling and aviation projects each impose different surface and material requirements. Anti-static treatment is essential where combustible dust or fuel vapour is present, while specific flame-retardant grades are mandated by regional safety codes. These PVC coated tarpaulin roll grades are available with custom treatment packages — the exact grade and test standard should be confirmed during specification so the material arrives with the documentation your site requires. [NEED_CITE: anti-static surface resistance requirements for industrial ventilation fabrics]
Reading the Specification Sheet Beyond the GSM Number
Weight per square metre alone does not define how a coated fabric performs under load. The base fabric denier and mesh count work together to determine tensile and tear behaviour — a 650 GSM roll built on 1000D×1300D yarn at 20×20 density distributes stress differently than one on a lighter weave. Thickness correlates with puncture resistance and weld penetration depth, while brittle temperature defines the lower operating boundary for cold-climate or refrigerated-environment installations. Coating adhesion, not just coating weight, governs whether the PVC layer stays bonded to the polyester base during flexing and thermal cycling.
What Happens When Duct Fabric Specifications Are Wrong
Supplying ventilation duct fabric without the required fire-retardant or anti-static certification does not just delay a project — it can invalidate the site safety audit and expose the contractor to regulatory penalties. Batch-to-batch colour variation across rolls installed side by side in a visible membrane structure forces costly panel replacement. Welds that fail before the fabric does typically trace back to inconsistent coating thickness or incorrect welding temperature for the specific GSM grade. [NEED_CITE: common failure modes in welded seams of PVC coated technical fabrics]
Why Technical Buyers Source These Rolls Here
Three full production lines and 36 sets of professional equipment maintain consistent coating weight and output volume across bulk roll orders. A 10-person R&D team handles material selection, treatment formulation and sample development, producing samples within days so buyers can verify weld compatibility and treatment performance before committing to production. Dedicated QA/QC inspects every roll before shipment, recording GSM, thickness and visual consistency. Documentation ships with each dispatch, including material specification sheets and test reports where applicable.
Documentation & Verification
- Material specification sheet stating exact GSM, base fabric denier and coating weight per roll grade
- Test report for flame-retardant and anti-static grades with standard and classification documented
- Pre-shipment inspection record confirming weight and thickness against quoted values
- ISO and CE certificates included in dispatch documentation package
- Colour reference and batch number recorded for traceability across multi-roll orders
Fabrication, Handling & Storage
- Hot-air welding temperature must match the specific coating weight and GSM grade of the roll
- Store rolls upright on pallets to prevent flat-spot deformation of the PVC coating surface
- Allow rolls to acclimatise before unrolling in cold conditions below the softening threshold
- Use compatible PVC-based repair patches for field repairs on duct seams and membrane panels
- Plan cutting layouts to minimise transverse welds in high-stress membrane zones
What to Include in Your Enquiry
Specify the ventilation duct diameter, airflow pressure range, and the fire-retardant or anti-static standard your project requires. Indicate the membrane structure type and expected wind or snow load if sourcing for inflatable or architectural applications. Provide target roll width, annual volume, and whether you need raw rolls or pre-cut panels with edge finishing.
Frequently Asked Questions
Q: What fire-retardant grades can you certify for mining and tunnelling ventilation duct fabric?
A: We supply PVC coated tarpaulin roll grades with flame-retardant treatment and provide test reports against recognised standards. The specific grade — such as M2, B1, NFPA 701 or DIN 4102 — must be confirmed at enquiry stage so we formulate the coating to match your site compliance requirement and ship the corresponding certificate.
Q: How do you verify anti-static surface resistance on industrial duct fabric before shipment?
A: Anti-static treatment is applied during the coating process and surface resistance is measured as part of pre-shipment inspection. We document the measured value and test method on the inspection record included with your dispatch, allowing your safety team to verify compliance against the site specification.
Q: Which GSM and base fabric denier is recommended for inflatable and membrane structure applications?
A: Inflatable and membrane structures typically require heavier grades with high tensile base fabrics to sustain internal pressure and wind load. The appropriate grade depends on structure size and design stress. Our R&D team reviews your engineering requirements and recommends a denier and GSM combination, then produces a sample for weld and stress testing.
Q: Can you supply test reports for flame-retardant and anti-UV treatments specific to my roll batch?
A: Yes. Each production batch is assigned a traceable batch number, and test reports for flame-retardant classification and UV treatment are generated for that specific batch. These reports ship with the roll documentation so you have full traceability from material to installed product.
Q: What is the minimum order and lead time for custom width or specialist treatment on PVC coated tarpaulin rolls?
A: Minimum order and lead time depend on the selected GSM grade, treatment package, and custom width required. We provide exact figures at the quotation stage after confirming your specification. Sample development for custom treatments is typically completed within days to allow buyer-side verification before bulk production begins.
