Process-Controlled Laminated Fabric — three full production lines maintain consistent coating adhesion across every roll, with in-process QA verifying weight and thickness at each stage for industrial ventilation and specialist structure applications.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | Laminated PVC Pool Cover Tarpaulin |
| Material | PVC + High-strength polyester mesh fabric |
| Coating Method | Laminated technology & Hot-melt coating technology |
| Weight Options | 350gsm / 420gsm / 500gsm / 550gsm / 600gsm / 750gsm (range covers product family — confirm the grade for this item) |
| Total Thickness | 0.32mm / 0.35mm / 0.4mm / 0.45mm / 0.5mm / 0.65mm |
| Roll Width | 2m / 2.1m |
| Roll Length | 75m / 50m |
| Finish Product Size | Custom items as per customer’s needs, or sold by inventory |
| Color Options | Blue / Red / Yellow / Light blue / Grey (Customized) |
| UV Treatment | Anti-UV (test basis not stated — confirm grade required for your market) |
| Fire Retardant | Available in fire retardant grades — confirm the grade required for your site compliance |
| Anti-Static | Anti-static treatment (standard not stated — confirm certification required) |
| Anti-Mildew | Yes |
| Waterproof | Yes |
| Cold Crack Resistance | Yes |
| Key Features | High-tenacity polyester yarns, good flexibility, outstanding tearing strength for welding, colour fastness |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mining and tunnelling ventilation duct | Continuous airflow abrasion, fire-retardant and anti-static compliance mandatory, duct flexing at joints |
| Aviation ground support ducting | Certified material documentation required, temperature fluctuation, ground handling contact |
| Membrane and inflatable structures | Sustained air pressure tension, UV and weather exposure, welded seam integrity at stress points |
| Temporary specialist enclosures | Rapid deployment, wind loading, repeated fold-unfold cycles requiring cold crack resistance |
What "Fire Retardant" Means When No Grade Is Cited on the Datasheet
Specify the fire classification your site requires before comparing quotations — a generic "fire retardant" claim without a grade carries no compliance weight.
Ventilation duct fabric arrives on a mining or tunnelling site with a fire retardant label on the packing list but no corresponding test report in the documentation package. The site safety officer rejects the installation because the specification called for a particular classification — DIN 4102, NFPA 701, or another local standard — and the supplied PVC laminated tarpaulin fire retardant documentation does not reference it. This scenario repeats across aviation ground support and temporary structure projects where fire safety audits are routine. [NEED_CITE: fire classification standards applicable to coated fabrics in industrial ventilation]
Coating Adhesion and Weld Integrity in Duct Fabrication
The hot-melt coating technology used in this PVC laminated tarpaulin fire retardant range produces a bond between the PVC layer and the polyester mesh that directly affects how the material behaves at welded seams. When fabricators heat-weld duct sections or inflatable structure panels, the coating must soften uniformly and fuse without delaminating from the base fabric. Inconsistent adhesion causes the weld to peel under flexing, which is the most common failure point in ventilation duct construction. Our laminated process maintains coating-to-fabric adhesion across the full GSM range available.
Anti-Static Compliance for Mining and Tunnelling Environments
Underground ventilation environments require fabric surfaces that dissipate static charge rather than accumulate it. The anti-static treatment applied to this PVC laminated tarpaulin fire retardant product line addresses that requirement, though the specific surface resistance standard must be confirmed against your site’s regulatory framework. Mining safety standards in different jurisdictions reference different test methods, and supplying duct fabric without the correct certification documentation delays installation and triggers costly re-inspection. [NEED_CITE: anti-static surface resistance standards for underground ventilation materials]
Reading GSM, Thickness, and Base Fabric Together
GSM alone does not determine whether a duct section will resist tearing at a flex point or hold a welded seam under sustained air pressure. A 550gsm fabric with a tightly woven high-tenacity polyester base may outperform a 750gsm fabric with a looser weave and heavier coating fill, because tensile and tear strength derive from the yarn structure as much as from total weight. The thickness options in this range correlate to the combined coating weight applied during the laminated and hot-melt process. Thicker coatings add puncture resistance and improve weld pool depth during fabrication, but also increase roll weight and handling difficulty on site. The 2m and 2.1m roll widths affect how many longitudinal welds are needed to construct a duct of a given diameter, and fewer welds means fewer potential failure points under flexing loads.
The Hidden Cost of Specifying Without Documentation
When a ventilation duct order is placed based on a quotation that states "fire retardant and anti-static" without citing grades or test methods, the fabric may pass visual inspection on arrival but fail the site compliance audit. The contractor then faces a choice: install uncertified material and assume liability, or reject the shipment and wait for replacement stock while the project schedule slips. Colour variation between rolls in the same order compounds the problem for membrane structures, where panels installed side by side show visible differences once inflated and lit by sunlight. Weld seam failures that originate from coating adhesion inconsistencies are not visible until the duct pressurises and the flex point cycles repeatedly under operational conditions. [NEED_CITE: weld seam failure modes in laminated PVC duct fabrication]
Why Source This Fabric Through Our Process
Nearly three decades of coating process control means the adhesion between PVC and polyester mesh is monitored at the coating head, not just checked at final inspection. Three full production lines and 36 sets of professional equipment provide the capacity to deliver bulk roll orders within typical multi-week lead times for custom grades. A dedicated 10-person R&D team handles material selection for fire retardant and anti-static requirements, developing samples within days so you can verify compliance before committing to a production run. Every roll undergoes 100% inspection before dispatch, with GSM and thickness verified against the specification sheet that accompanies your shipment.
Documentation & Verification
- Material specification sheet stating GSM, base fabric denier, coating method and weight for each roll
- Fire retardant test report citing the applicable standard and grade — confirm your site requirement before ordering
- Anti-static test report with surface resistance values per the standard referenced in your project specification
- ISO and CE certificates with pre-shipment inspection record covering every roll in the consignment
- Roll packing list matching roll numbers to GSM, colour, width and length for traceability
Fabrication, Handling & Storage
- Set hot-melt welding temperature to match the 0.32mm to 0.65mm thickness range; thicker grades need longer dwell times
- Allow 2m and 2.1m rolls to acclimatise before unrolling in cold conditions to preserve cold crack resistance
- Store rolls horizontally on pallets to prevent creasing that weakens the polyester mesh at fold lines
- Test weld seam strength on a sample cut from each roll batch before fabricating full duct sections
- Use compatible PVC-based repair patches matching the laminated coating chemistry for on-site duct repairs
Request a Specification Match for Your Application
Tell us the ventilation duct diameter, operating pressure range, and the fire retardant or anti-static classification your site requires. We will recommend the appropriate GSM grade and coating thickness, then develop a sample for your fabricator to weld-test before you commit to a bulk order. Include your required roll width preference and annual volume so we can confirm lead time and production scheduling.
Frequently Asked Questions
Q: Which fire retardant grade should I specify for underground mining ventilation duct?
A: The grade depends on your jurisdiction’s mining safety regulations — common references include DIN 4102 B1, M2, or NFPA 701. Send us the standard cited in your project specification and we will supply the corresponding test report with your PVC laminated tarpaulin fire retardant shipment. If the standard is not yet determined, our R&D team can outline which grades are available for sampling.
Q: How do I verify GSM and thickness on arrival match the quotation?
A: Each roll ships with a pre-shipment inspection record documenting measured GSM and thickness. We recommend cutting a sample from the first roll and weighing it against the stated specification. Our 100% inspection process before dispatch means every roll is measured, and the packing list cross-references roll numbers to verified values.
Q: Can the fabric be heat-welded without delamination at flex points?
A: The hot-melt coating technology produces consistent adhesion between the PVC coating and the polyester base, which supports reliable heat-welding. Weld parameters should be adjusted to the thickness grade selected. We recommend fabricating test welds from sample material and performing peel tests before committing to full production runs on duct sections.
Q: What is the minimum order for custom width or fire retardant certification?
A: Minimum order quantities vary by the specific GSM grade, width, and fire retardant grade requested. Custom widths within the 2m and 2.1m range and cut-to-size finished products are available. Share your required specification and volume with our team to receive a quotation confirming lead time and minimum order for your particular configuration.
