Deep Process Control Over Coating Weight — Every roll of our 620gsm technical PVC fabric undergoes coating adhesion verification before leaving the production floor, ensuring the GSM on the certificate matches what arrives at your ventilation duct fabrication facility.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Base Fabric | PVC + High-strength polyester mesh fabric |
| Weight | 350gsm / 420gsm / 500gsm / 550gsm / 600gsm / 750gsm (confirm the grade for this item) |
| Total Thickness | 0.32mm / 0.35mm / 0.40mm / 0.45mm / 0.50mm / 0.65mm |
| Coating Method | Laminated technology & Hot-melt Coating technology |
| Roll Width | 2m / 2.1m |
| Roll Length | 75m (for 2m width) / 50m (for 2.1m width) |
| Color Options | Blue / Red / Yellow / Light blue / Grey (Customized) |
| Surface Finish | Glossy Surface or Matt Surface |
| Key Features | Cold Crack Resistance, Anti-Mildew, Waterproof, Anti-Static treatment (grade not stated), Fire-retardant treatment (grade not stated) |
| Service Life | 3–7 years under normal conditions (source value — verify against manufacturer catalog) |
| Certifications | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mining and tunnelling ventilation ducts | Continuous airflow pressure, fire-retardant compliance mandatory, potential anti-static requirement in explosive atmospheres |
| Inflatable and membrane structure fabric | Structural tension under wind load, UV and weather exposure, weld seam integrity at flex zones |
| Aviation hangar ventilation duct outer covers | Fire safety regulations, chemical and fuel vapour exposure, dimensional stability under variable temperature |
| Industrial extraction and dust collection ducts | Abrasive particulate contact, anti-static surface resistance for combustible dust environments |
| Temporary semi-permanent structure enclosures | Tensile load on membrane panels, thermal cycling, weather and water resistance |
Why "Fire Retardant" Without a Grade Is a Compliance Risk for Ventilation Fabric
Fire-retardant and anti-static claims on PVC coated tarpaulin rolls mean nothing on site without a test certificate that names the standard and the grade achieved.
Purchasing teams for mining and tunnelling projects frequently specify fire-retardant duct fabric on paper, only to find the rolls arrive with a generic datasheet that makes no reference to the test method or classification. Site safety inspectors then reject the installation, work halts, and the contractor faces re-procurement delays. The PVC coated tarpaulin fire retardant / anti-static / certified specification must match the exact standard your jurisdiction enforces — whether that is a national mining code, an aviation facility standard, or a construction fire safety regulation. [NEED_CITE: fire classification standards for flexible ventilation duct materials in mining environments]
Without verified documentation, the entire duct run becomes a liability the moment an incident investigation traces back to material compliance.
How Coating Method Determines Weld Integrity in Duct Fabrication
Ventilation ducts are only as reliable as their seams. Laminated and hot-melt coating technologies both bond the PVC layer to the polyester mesh, but they behave differently when you apply heat at the weld line. Hot-melt coating fuses the PVC into the mesh structure at the molecular level, creating a bond that survives repeated flex cycles without delaminating. Laminated technology, while effective for many applications, can separate at the weld zone under sustained airflow pressure if the heat settings are not matched to the coating weight. Specifying the right coating method for your PVC Coated Tarpaulin Roll depends on your welding equipment, the duct diameter, and the internal pressure the finished duct must sustain.
Cold Crack Resistance and Temperature-Variable Duct Performance
Mining ventilation ducts routinely experience temperature swings between the portal entrance and the working face. A PVC coated tarpaulin that becomes brittle at low temperatures will crack at the fold points where the duct is stored and redeployed between blast cycles. Cold crack resistance in this PVC coated tarpaulin means the plasticiser system in the coating formulation remains flexible below ambient freezing, maintaining the seal at welded seams and preventing air leakage that reduces ventilation efficiency. For high-altitude tunnelling or winter construction projects, this property directly affects whether the duct performs reliably from the first shift to the last. [NEED_CITE: cold crack test methods for PVC coated fabrics in sub-zero environments]
Reading GSM, Thickness and Base Fabric Together
A 620gsm PVC coated tarpaulin tells you the total weight of base fabric plus coating per square metre, but it does not tell you how that weight is distributed. Two rolls at the same GSM can have very different tensile and tear behaviour depending on the polyester mesh denier and weave density underneath. A heavier coating on a lighter base fabric will resist puncture well but may tear more easily once a rip starts. Conversely, a dense mesh with a thinner coating layer delivers higher tear propagation resistance but may be more vulnerable to surface abrasion over extended service. The coating method — laminated versus hot-melt — also changes the relationship between total GSM and seam weld strength, because hot-melt penetration into the mesh creates a different peel resistance profile than surface-applied lamination. Roll width at 2m or 2.1m determines how many longitudinal welds your duct fabrication will require: narrower ducts can be made from a single wrap with one seam, while larger diameters need panel joining, which introduces additional failure points. Surface finish — glossy or matte — affects how dust and particulate adhere to the duct exterior and how easily the fabric cleans between deployments.
The Hidden Cost of Undocumented Fire-Retardant and Anti-Static Grades
When a ventilation duct fabric fails a site fire safety audit, the consequences extend far beyond replacing the material. The entire duct run may need to be removed and reinstalled, halting production in the tunnel or mine. Anti-static surface resistance that is claimed but not tested to a recognised standard leaves combustible dust environments exposed to ignition risk, and the contractor bears liability for any incident that follows. Batch-to-batch inconsistency in coating weight or fire-retardant chemical loading can mean that the first roll passes inspection while the fifth roll in the same shipment does not. This is why pre-shipment verification of every roll — not just a sample from the first production run — is non-negotiable for compliance-critical projects. [NEED_CITE: anti-static surface resistance measurement standards for flexible duct materials]
Why Technical Buyers Source PVC Tarpaulin Rolls Through This Facility
The 10-person R&D team handles material selection for ventilation duct and membrane structure applications, matching coating chemistry and base fabric denier to your project’s pressure, temperature and compliance requirements. Three full production lines and 36 sets of professional equipment support bulk roll output with consistent coating weight across the production run, reducing the risk of batch variation that causes compliance failures on site. Dedicated QA/QC inspection at every production stage means coating adhesion, GSM, colour consistency and surface defects are checked before rolls are packed — not after a container has shipped. Sample development within days allows you to test weld parameters and confirm fire-retardant or anti-static grades before committing to a full production order. Nearly 30 years of focused experience in coated fabric production provides the process knowledge to specify the right coating method and treatment combination for aviation, mining and tunnelling ventilation applications. [NEED_CITE: ISO and CE certified coated fabric production for industrial ventilation applications]
Documentation & Verification
- Material specification sheet stating confirmed GSM, base fabric type and coating method for each roll
- Fire-retardant and anti-static test reports matching the grade required by your project specification
- ISO and CE certificates available on request for compliance documentation packages
- Pre-shipment inspection record covering coating adhesion, dimensional accuracy and surface quality
- Roll packing list with individual roll weights and dimensions for receiving verification
Fabrication, Handling & Storage
- Hot-melt coated rolls require matched heat and dwell time settings at the weld line to prevent delamination under duct pressure
- Glossy surface finish sheds dust more readily during duct redeployment; matte finish provides better adhesion for printed safety markings
- Store rolls horizontally on pallets to prevent permanent creasing that weakens the polyester mesh at fold lines
- Unroll cold-stored PVC coated tarpaulin gradually at ambient temperature to avoid coating crack at the roll edge
- Cut panels using the 2m or 2.1m roll width as your base layout dimension to minimise offcuts and longitudinal weld seams
What to Include in Your PVC Tarpaulin Roll Enquiry
To specify the right technical fabric for your ventilation duct or membrane structure project, we need to understand the application environment and compliance framework you are working within. Please provide the duct diameter and operating pressure, or the membrane panel dimensions and structural tension loads, along with the fire-retardant standard and anti-static grade your project specification mandates. Indicate whether you require rolls only or fabricated panels with welded seams, and confirm your target roll width and annual volume so we can plan production allocation accordingly. If colour consistency across multiple rolls is critical for a visible membrane installation, note your colour reference and request a pre-production sample for approval.
Frequently Asked Questions
Q: What fire-retardant grades and test standards are available for your PVC tarpaulin rolls?
A: Fire-retardant treatment options are available across our PVC coated tarpaulin range, but the specific grade and test standard must be confirmed against your project requirement. Different markets enforce different classifications — mining ventilation codes, aviation facility standards, and construction fire safety regulations each reference distinct test methods. State the standard your site inspector requires when you enquire, and we will match the treatment grade and provide the supporting test report with your shipment.
Q: How do you verify anti-static surface resistance and provide certification for mining or aviation duct applications?
A: Anti-static treatment is available as an option on our PVC coated tarpaulin rolls. Verification involves measuring surface resistance and comparing the result against the threshold specified by your project’s safety code. We provide test documentation with each treated roll shipment so your compliance team has the evidence needed for site audit. Confirm the resistance range your project mandates at enquiry stage so we can validate the treatment formulation before production.
Q: What GSM grades are available and how is coating weight verified on arrival?
A: Our PVC coated tarpaulin rolls are produced in a range of GSM grades from 350gsm to 750gsm with corresponding thickness values. Each roll undergoes GSM verification during our pre-shipment inspection process, and the result is documented on the packing list. For ventilation duct applications where specific coating weight affects weld performance and fire-retardant chemical loading, we recommend requesting the material specification sheet before production to confirm the exact grade for your application.
Q: How do you ensure batch-to-batch colour and coating consistency across multiple rolls?
A: Colour consistency is critical when multiple PVC coated tarpaulin rolls are installed side by side in a membrane structure or duct run. Our QA/QC process checks colour reference at every production stage, and the 100% pre-shipment inspection covers coating weight uniformity across the roll. For large orders requiring multiple production runs, we recommend ordering the full quantity in a single batch to eliminate run-to-run variation and requesting a sample from the production line for your approval before dispatch.
Q: What documentation ships with each roll for site compliance audits?
A: Each PVC coated tarpaulin roll shipment includes a material specification sheet, pre-shipment inspection record, roll packing list and certificate of origin. Where fire-retardant or anti-static treatment has been specified, the corresponding test report accompanies the documentation package. ISO and CE certificates are available on request. This documentation set is designed to satisfy the compliance audit requirements typical in mining, tunnelling and aviation ventilation projects.
