Specification Integrity — Every roll undergoes dedicated QA/QC with verified GSM and coating weight records, ensuring the technical fabric you specify for industrial ventilation or membrane structures is exactly what arrives on site.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin |
| Base Fabric | High-strength polyester mesh fabric |
| Coating Material | PVC |
| Coating Method | Laminated technology & Hot-melt Coating technology |
| Weight (GSM) | 350gsm / 420g / 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 (for 2m width) / 50m (for 2.1m width) |
| Color Options | Blue / Red / Yellow / Light blue / Grey (Customized) |
| Waterproof | Yes |
| Anti-Mildew | Yes |
| Cold Crack Resistance | Yes |
| Flame Retardant | Available as special treatment — confirm the grade required for your market |
| Anti-Static | Available as special treatment — confirm the standard required for your site |
| Standards | ISO 9001, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mining and tunnelling ventilation ducts | Continuous airflow, underground particulate exposure, mandatory fire-retardant and anti-static compliance |
| Aviation facility ducting and enclosures | Strict fire classification standards, anti-static surface requirements, fuel-adjacent environments |
| Inflatable and membrane structures | Repeated inflation cycles, structural seam stress, UV and weather exposure |
| Construction site temporary enclosures | Wind loading, scaffolding abrasion, dust containment, site safety colour coding |
| Industrial air handling plenums | Positive and negative pressure cycling, thermal fluctuation, long-run dimensional stability |
What Happens When Ventilation Duct Fabric Lacks Documented Certification
Fabric that cannot prove its fire-retardant or anti-static grade on paper is a liability on any regulated site, regardless of how it performs in a supplier’s in-house test.
Mining inspectors and aviation safety auditors do not accept verbal assurances about PVC coated tarpaulin roll fire retardant or anti-static performance. They require a test report that names the standard, identifies the laboratory, and references the batch. When ventilation duct is fabricated from material lacking this documentation, the entire installation can be shut down and the contractor forced to replace it at their own cost. We have seen projects delayed because the duct fabric arrived without the fire classification paperwork the site demanded [NEED_CITE: fire classification test methods for ventilation duct materials in underground mining]. Specifying the exact grade and requiring the matching certificate before production begins is the only reliable way to avoid this exposure.
Matching GSM to Airflow Pressure and Structural Load
The range of available weight options — from 350gsm through to 750gsm — exists because ventilation and membrane applications impose very different mechanical demands. Low-pressure auxiliary ducting in a construction enclosure may perform well with a lighter grade, while a main intake duct in a deep mining shaft must withstand sustained negative pressure without collapsing or fluttering at the seams. The PVC coated tarpaulin roll fire retardant grade you specify should be matched to both the operating pressure and the span between support rings, not selected on cost alone. Our R&D team reviews your airflow data and duct geometry to recommend the appropriate weight and thickness before sample development begins.
Coating Adhesion and Weld Integrity for Duct Fabrication
Ventilation ducts are fabricated by heat-welding overlapping panels into cylindrical or rectangular sections, and the weld line is typically the first point of failure under flexing and pressure cycling. Laminated technology and hot-melt coating produce a strong bond between the PVC layer and the high-strength polyester mesh base fabric, which directly influences how much energy the seam can absorb before delamination begins. When the coating adhesion is weak, the weld peels apart under the repeated expansion and contraction that every duct experiences during fan start-up and shut-down [NEED_CITE: coated fabric weld strength and peel resistance test methods]. Hot-melt coating technology addresses this by embedding the PVC into the mesh structure rather than simply laying it on the surface, giving the welder a more consistent material to work with across the full width of the roll.
Decoding Thickness, Base Fabric and Coating Weight
Total thickness in coated fabrics is the combined result of base fabric denier, weave density, and coating mass on each side. A 0.65mm fabric at 750gsm achieves that mass differently from a 0.32mm fabric at 350gsm — the heavier grade typically uses a denser polyester mesh with more PVC fill, yielding higher tensile and tear values as well as greater resistance to puncture during installation. Laminated and hot-melt coating methods differ in how the PVC penetrates the mesh: hot-melt drives the coating deeper into the weave, which improves peel strength and makes the heat-welded seams more tolerant of fabrication variability. For anti-static applications, the surface resistivity depends on additives within the PVC compound itself, so the coating method must be compatible with the treatment chemistry to maintain consistent readings across the roll width [NEED_CITE: surface resistivity measurement standards for anti-static industrial fabrics]. Roll width and length — 2m at 75m or 2.1m at 50m — influence how many longitudinal welds a duct fabricator must make; wider rolls reduce seam count on large-diameter ducts.
The Hidden Cost of Specifying the Wrong Grade
Supplying a ventilation duct in a grade lighter than the operating pressure demands leads to visible collapse and flutter within weeks of installation, and the contractor bears the cost of removal and replacement. When flame-retardant or anti-static treatment is claimed but no test report accompanies the shipment, the site safety officer can reject the entire duct run, halting production until compliant material arrives [NEED_CITE: compliance documentation requirements for underground ventilation materials]. Colour inconsistency between rolls becomes a secondary problem on membrane structures where adjacent panels are welded together and viewed in direct sunlight — a visible shade mismatch forces the contractor to reorder or accept a compromised appearance. All of these failures are preventable when the specification, the test report, and the pre-shipment inspection are aligned before production starts.
Why Technical Buyers Source Ventilation Fabric Here
Three full production lines and 36 sets of professional equipment support the volume and consistency that large-scale duct and membrane projects require, with capacity to run dedicated batches for single specifications. The 10-person R&D team handles material selection, sample development, and fabrication parameter guidance so that your workshop receives roll stock matched to its welding equipment and duct geometry. Dedicated QA/QC at every production stage means coating weight, colour reference, and treatment performance are checked in process — not only at final inspection — reducing the risk of a late-stage batch rejection [NEED_CITE: in-process quality control for coated technical fabrics]. Samples for custom widths, colours, or treated grades are developed within days, allowing your engineering team to validate weld parameters and seam strength before committing to a full production run. ISO 9001 and CE documentation, along with certificates of origin and customs support, ship with every dispatch so that site compliance paperwork is complete on arrival.
Documentation & Verification
- Material specification sheet stating GSM, base fabric, coating method, and colour reference per roll
- Test report for flame-retardant and anti-static grades where applicable, matched to site compliance standard
- Pre-shipment inspection record verifying weight, thickness, and visual consistency before dispatch
- Roll packing list with net weight, roll count, and dimensions for freight and customs planning
- ISO 9001 and CE certificates plus certificate of origin included with each shipment
Fabrication, Handling & Storage
- Heat-weld seams at temperatures and dwell times matched to the specific GSM and coating method of your roll
- Store rolls horizontally on pallets to prevent creasing that can affect weld quality on the creased section
- Unroll and allow the PVC coated tarpaulin roll to relax in ambient temperature before cutting to avoid dimensional drift
- Clean surfaces with mild detergent only; solvent-based cleaners can degrade the PVC coating and affect anti-static treatment
- Plan cut patterns to maximise material yield from the 2m or 2.1m roll width and minimise longitudinal seam count
Specifying Your Ventilation or Membrane Fabric
Provide your duct diameter or membrane panel dimensions, operating pressure range, and the fire-retardant or anti-static standard required by your site authority so that we can recommend the appropriate GSM and treatment. Let us know the target roll width, annual volume, and colour or surface finish preference, along with whether you need raw roll stock or pre-cut panels. If fabrication validation is critical, request a sample roll for your workshop to confirm weld parameters before full production is scheduled.
Frequently Asked Questions
Q: What fire-retardant grade do you supply and which test standard does it meet?
A: Flame-retardant treatment is available as a special option on our PVC coated tarpaulin roll range. The specific grade and test standard depend on your market and site requirements. We provide a test report referencing the applicable standard once the required grade is confirmed during the specification stage, ensuring your documentation matches what the site inspector demands.
Q: How is anti-static performance measured and what surface resistance can be documented?
A: Anti-static treatment is applied within the PVC compound during coating. Surface resistivity is measured according to the relevant standard for your application sector, and the test result is documented on the batch report. Confirm the target resistance range with your site safety team so that we match the treatment chemistry to the required reading before production.
Q: How do I verify the GSM on arrival matches the quotation?
A: Every shipment includes a material specification sheet stating the GSM, base fabric, and coating method for each roll. Our dedicated QA/QC team inspects weight at multiple production stages, and the pre-shipment inspection record accompanies the dispatch documents so you can cross-check the physical rolls against the stated values immediately on receipt.
Q: What is the weld and seam behaviour of the fabric for duct or inflatable fabrication?
A: The laminated and hot-melt coating technology produces strong adhesion between the PVC coating and the polyester mesh base, which gives the heat-welded seam good peel resistance under flexing. We recommend fabricating test seams from a sample roll to confirm optimal temperature and dwell time settings for your specific welding equipment and the chosen GSM grade.
Q: Can you supply custom width and roll length for specialist structure projects, and what are the lead times?
A: Standard roll widths are 2m and 2.1m, with lengths of 75m and 50m respectively. Custom widths and lengths can be produced for specialist structure projects, subject to minimum quantity requirements. Samples are developed within days of specification confirmation, and production lead times depend on the order volume and any special treatment requirements.
