Deep Process Control on Coating Weight — Every roll of PVC coated tarpaulin is verified against its specification sheet before leaving our facility, ensuring the GSM and coating adhesion match your project requirements for industrial ventilation and specialist structures.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin |
| Base Fabric Denier | 200DX300D / 500DX500D / 840DX840D / 1000DX1000D |
| Weight (GSM) | 250gsm-1500gsm (confirm grade for specific application) |
| Coating Material | PVC |
| Surface Finish | Glossy or Matte |
| Temperature Range | -15°C to 70°C |
| Flame Retardant | FR treated (grade not stated in source — confirm the grade required for your market) |
| Anti-Fungal | Treated |
| Waterproof | Yes |
| Color Options | Blue, Yellow, Black, Green, White, Custom |
| UV Treatment | Customized (test basis not stated) |
| OEM/ODM | Accepted |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Mining & Tunnelling Ventilation Duct | Underground environment, strict fire-retardant and anti-static compliance, high airflow pressure, mechanical abrasion from rock dust. |
| Aviation Maintenance Hangar Structures | Large span membrane or inflatable structures, UV exposure, requirement for specific fire safety grades for indoor public/industrial spaces. |
| Construction Temporary Enclosures | Weather protection, wind load, frequent installation and removal, site safety visibility. |
| Industrial Air Duct Fabrication | Heat-welded seams for airtightness, flexing during operation, resistance to internal condensation and fungal growth. |
What "Certified" Means When the Audit Inspector Asks for the Paperwork
We supply the test report that matches the standard your site safety manager is checking against, not a generic claim.
Ventilation duct installed in a regulated underground mine or aviation facility fails the compliance check because the fabric supplier provided a certificate for the wrong regional standard or no test report at all. The downtime to rip out non-compliant duct and replace it far exceeds the original material cost. Our process starts by confirming the specific fire-retardant and anti-static standard your project mandates before we quote, so the PVC coated tarpaulin arrives with documentation that satisfies the auditor first time. [NEED_CITE: regional variations in mining ventilation duct fire safety standards]
Material Construction for Technical Ductwork
The performance of a ventilation duct under positive or negative pressure depends on the base fabric denier and the coating adhesion. We offer denier options from 200DX300D through 1000DX1000D, allowing technical buyers to match the tensile and tear demand of their specific duct diameter and operating pressure. The PVC coating is applied to achieve the stated GSM and is available in glossy or matte finish, which influences how the fabric behaves during heat-welded seam fabrication.
Thermal Welding and Seam Integrity
Duct seams carry the full internal pressure load, and a seam that fails before the fabric body does is a common failure mode in poorly specified material. Our coating formulation is designed for consistent heat-weld behaviour across the roll, and our 10-person R&D team can adjust the formulation or provide welding parameter guidance for your fabrication equipment. This ensures the welded joint reaches the required peel strength for your duct construction method. [NEED_CITE: influence of PVC plasticiser migration on long-term weld peel strength]
Reading the Specification Sheet Beyond the GSM Number
A single GSM figure does not tell you whether the fabric will resist tearing at a stress concentration or hold a welded seam under cyclic pressure. The base fabric denier and weave density determine the mechanical skeleton — a 1000DX1000D base provides substantially higher tear resistance than a 200DX300D base, even if the total GSM is similar due to different coating weights. The coating method (knife coated) and the adhesion between the PVC layer and the base yarn dictate the peel strength, which is critical for any fabricated duct where seams are thermally welded. The stated temperature range of -15°C to 70°C defines the operational boundary; below this, the PVC becomes brittle and susceptible to impact damage, while above it the coating softens and tensile strength drops. Surface finish choice between glossy and matte affects not only the visual appearance but also the surface energy, which influences how well printed branding or additional adhesive tapes bond during fabrication.
The Cost of a Specification Mismatch on Site
When the flame-retardant grade on the certificate does not match the local mining or building code, the entire duct installation is rejected at the final inspection, and the contractor faces replacement costs and project delay penalties. A batch of duct fabric where the colour or the coating weight varies roll-to-roll creates visible inconsistency once installed in a high-visibility environment like an aviation hangar. Specifying a GSM that is too light for the duct diameter and operating pressure leads to excessive flexing and eventual fatigue failure at the welded seams. [NEED_CITE: relationship between duct diameter, internal pressure and required fabric tensile strength]
Why Source This PVC Coated Tarpaulin From Jinxiang
Our 30 years of focus on coated fabric means we understand the difference between a generic tarpaulin and a technical duct fabric. The three full production lines and 36 sets of equipment give us the capacity to deliver large project volumes on time, while the dedicated QA/QC at every production stage with 100% inspection before shipment catches coating weight deviations before they reach your site. Our 10-person R&D team handles the material selection and sample development for your specific fire-retardant and anti-static requirement, not just an off-the-shelf product. We provide the full documentation package your cross-border project demands, from the material specification sheet to the certificate of origin.
Documentation & Verification
- Material specification sheet stating the exact GSM, base fabric denier and PVC coating weight for your order.
- Test report for the specific flame-retardant grade applicable to your target market’s mining or building standard.
- Pre-shipment inspection record with roll-by-roll GSM and visual verification before dispatch.
- Certificate of origin and full customs documentation for cross-border project site delivery.
Fabrication, Handling & Storage
- Heat-weld parameters should be established with our R&D team based on your specific PVC coated tarpaulin GSM and finish.
- Store rolls horizontally on a clean, dry surface to prevent permanent creasing of the coated surface.
- Avoid dragging rolls on unprotected ground to prevent abrasion of the outer coating layer.
- Use compatible PVC-based repair tape or liquid PVC for on-site duct seam repairs.
- Plan cutting layouts to maximise roll utilisation and minimise the number of transverse welded seams in the finished duct.
Specifying Your Ventilation Duct Fabric Requirement
To provide an accurate specification and sample, we need to know the target market’s specific fire-retardant and anti-static standard, the duct diameter and operating pressure, and whether you require fabric by the roll or pre-cut panels. Please also confirm the required colour, surface finish (glossy or matte) and your annual volume. This allows us to recommend the correct base fabric denier and coating weight for your application.
Frequently Asked Questions
Q: What fire-retardant test reports can you provide for mining and tunnelling duct applications?
A: We supply test reports for the specific flame-retardant grade you require, such as those mandated by local mining regulations. Please confirm the exact standard for your project at the inquiry stage so we can verify compliance and include the correct documentation with your PVC coated tarpaulin sample and shipment.
Q: How do you ensure the GSM on the roll matches the specification I approved?
A: Every roll undergoes a weight check as part of our 100% pre-shipment inspection. The result is recorded against the material specification sheet for your order. This verification step ensures the PVC coated tarpaulin you receive matches the quoted GSM before it leaves our facility.
Q: What is the relationship between base fabric denier and the tear strength of the finished duct?
A: The base fabric denier (from 200DX300D to 1000DX1000D) is the primary structural element that resists tearing. A higher denier base fabric provides greater resistance to tear propagation, which is critical for ducts under internal pressure or subject to mechanical damage during installation and operation.
Q: Can you develop a sample to my exact GSM, colour and treatment requirement?
A: Yes, our 10-person R&D team develops custom samples within days. Provide your required GSM, base fabric denier, colour reference, and the specific fire-retardant or anti-static grade, and we will produce a sample for your approval before full production commences.
Q: What information do you need to quote for a custom-width roll for duct fabrication?
A: We require the finished duct diameter, the required fabric width and roll length, the target GSM and denier, the surface finish (glossy or matte), and the specific treatment certifications needed. This allows us to confirm the production lead time and minimum order quantity for your PVC coated tarpaulin specification.
