Process-Controlled Coating — 450gsm PVC coated tarpaulin produced on dedicated lines with batch-level GSM tracking and full documentation for fire-retardant and anti-static compliance.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin |
| Weight | 450gsm |
| Color | Green |
| Coating Material | PVC |
| Construction | Double-faced |
| Waterproof | Yes |
| Flame Retardant | Available — confirm grade required for your market |
| Anti-UV | Available — request test basis for your specification |
| Anti-Mildew | Yes |
| Key Features | Waterproof, mildew resistant, double-faced PVC coating |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mine and tunnelling ventilation duct | Continuous airflow, dust loading, mandatory fire-retardant and anti-static certification for underground use |
| Aviation ground support ducting | Fuel-adjacent environment, documented compliance required before site acceptance |
| Membrane and inflatable structure fabric | Sustained tension, wind load, UV exposure, weld seam integrity critical |
| Industrial equipment covers | Water and weather exposure, abrasion from handling, long-term outdoor storage |
| Construction site ground sheets | Soil contact, moisture ingress, puncture from aggregate and tools |
Why Compliance Documentation Matters More Than the GSM Label on the Roll
A 450gsm PVC coated fabric without a verifiable fire-retardant grade is a liability on any regulated site.
Ventilation duct installed underground or in aviation-adjacent zones must carry documented proof of flame retardancy and, where specified, anti-static behaviour. We have seen contractors receive rolls labelled "FR" only to discover at site inspection that no test report accompanied the shipment, delaying commissioning and forcing replacement orders. [NEED_CITE: fire classification standards for coated fabrics used in mining ventilation]
The 450gsm PVC coated tarpaulin described here is available in flame retardant grades — confirm the grade required for your market before placing the order. Anti-UV treatment is also available on request with the applicable test standard stated on the report. This approach ensures that every roll leaving the factory matches the compliance package your site auditor will review.
Coating Weight and Its Relationship to Tensile Performance
At 450gsm, this PVC coated tarpaulin sits in a weight class where base fabric denier and weave density must carry the tensile load, while the coating provides waterproofing and chemical resistance. A higher GSM does not automatically translate to higher tear strength if the base fabric is loosely woven. Specifying the fabric requires reviewing the GSM alongside the denier and thread count to understand how the material will behave under sustained tension in duct or membrane applications.
Heat-Welded Seam Behaviour in Duct and Structure Fabrication
Double-faced PVC coating supports heat-welded seam construction, which is the preferred joining method for ventilation duct and inflatable structures. The coating on both sides must reach a consistent melt temperature for the weld to achieve peel strength comparable to the parent fabric. Uneven coating weight across the roll width can cause one edge of the weld to bond at a different rate, creating a failure point that appears only after the duct is pressurised. [NEED_CITE: peel strength test methods for PVC coated fabric welds]
Reading the 450gsm Specification Beyond the Label
The 450gsm figure represents the total weight of base fabric plus coating per square metre. For this green PVC coated tarpaulin, the double-faced construction distributes coating mass on both sides, contributing to balanced performance when the fabric is flexed or folded. The anti-mildew treatment protects against biological degradation in humid or below-ground environments where ventilation ducts operate continuously. Waterproofing is inherent to the PVC coating itself, so the fabric does not rely on added surface treatments to resist moisture ingress. Where flame retardancy is specified, the treatment must be compatible with the PVC compound to avoid reducing coating adhesion at the weld zone.
The Cost of Specifying on Weight Alone
Ordering PVC coated fabric by GSM without confirming base fabric construction, coating adhesion, or fire-retardant grade leads to predictable failures. A roll that meets the 450gsm target but uses a lighter base fabric with heavier coating may pass the scale check yet tear under the flex loads of a ventilation duct. Flame retardant claimed without a test report means the site safety officer will reject the installation. [NEED_CITE: common causes of coated fabric failure in ventilation duct applications]
Batch-to-batch colour variation is another consequence of insufficient process control — green rolls from different production runs arriving visibly different once hung side by side in a structure or along a duct run. These are not defects in the coating chemistry; they are failures in specification and verification discipline.
Why Procurement Teams Specify This Fabric With Us
Three full production lines and 36 sets of professional equipment support bulk volume with consistent output, so your 450gsm PVC coated tarpaulin order maintains roll-to-roll uniformity across container loads. A 10-person R&D team develops samples within days for custom width, colour, or treatment requirements, reducing the gap between inquiry and production approval. Dedicated QA and QC at every production stage with full pre-shipment inspection means the roll you receive matches the specification sheet you approved. Nearly 30 years of focused coated fabric production provides the process knowledge to control coating weight, adhesion, and surface finish across large production runs.
Documentation & Verification
- Material specification sheet stating 450gsm, base fabric denier, and coating compound for this green PVC tarpaulin
- Fire-retardant test report issued to the grade specified in your purchase order
- Anti-UV test report confirming the treatment basis and exposure standard applied
- ISO and CE certificates included in the shipment documentation package
- Pre-shipment inspection record with per-roll weight verification before dispatch
- Certificate of origin and customs support documentation for international freight
Fabrication, Handling & Storage
- Heat-weld this 450gsm double-faced PVC fabric at temperatures matched to the coating compound for full peel strength
- Store rolls horizontally on pallets to prevent edge deformation that affects unwinding and weld alignment
- Clean the green PVC surface with mild detergent only; solvent-based cleaners can soften the coating
- Allow cold-stored rolls to reach ambient temperature before unrolling to avoid coating crease damage
- Plan cutting layout to minimise offcuts and reduce the number of welded seams in finished duct sections
- Repair minor punctures with PVC-compatible adhesive patches applied to clean, dry coating surfaces
Requesting a Specification Match
Provide the ventilation duct diameter, run length, and operating pressure so we can confirm whether 450gsm is the correct weight for your application. State the fire-retardant grade or anti-static standard your site requires, along with the target market jurisdiction. Indicate whether you need rolls at standard width or custom cut panels with specific edge finishing.
Frequently Asked Questions
Q: Which fire-retardant grade applies to this 450gsm PVC coated tarpaulin?
A: The fabric is available in flame retardant grades — the specific grade depends on your market jurisdiction and site requirement. Confirm whether you need certification to a mining standard, building material classification, or aviation ground support specification, and we will provide the matching test report with your order documentation.
Q: How is the 450gsm weight verified before the rolls ship?
A: Every roll undergoes weight verification as part of the pre-shipment inspection process. The inspection record confirms the measured GSM against the stated 450gsm specification and is included with your dispatch documentation so you can cross-reference on arrival.
Q: Is anti-static treatment available for mine ventilation duct use?
A: Anti-static treatment can be applied to this PVC coated fabric for underground mining and tunnelling applications where static discharge is a compliance requirement. Specify the anti-static standard your site mandates so we can confirm treatment compatibility and provide the relevant test documentation.
Q: Can this fabric be heat-welded for duct fabrication?
A: The double-faced PVC coating construction supports heat-welded seam joining, which is standard practice for ventilation duct and inflatable structure fabrication. Request a sample to validate weld parameters with your equipment before committing to a full production order.
Q: What is the lead time for custom width or colour orders?
A: Custom width and colour orders for this 450gsm PVC coated tarpaulin involve sample development and approval before production begins. Typical multi-week lead times apply depending on order volume and specification complexity. Submit your requirements early to allow time for sample confirmation.
