Proven coating adhesion control — Our 500D×500D polyester base undergoes double-sided PVC coating with strict GSM verification, ensuring the material you receive matches the specification sheet exactly.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin |
| Base Fabric Yarn Count | 500D × 500D Polyester |
| Coating Material | PVC (Polyvinyl Chloride) |
| Key Features | Water Resistant, Flame Retardant (grade not stated), Waterproof, Anti-UV (test basis not stated) |
| Surface Finish | Smooth and soft texture with leather-like feel |
| Repair Method | Hot air weldable |
| Packaging Options | Roll packing, bale packing, carton |
| Certification | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Truck and Trailer Side Curtains | Constant flexing at hinges, road debris impact, UV exposure, wind flap abrasion |
| Industrial Machine Covers | Outdoor weathering, dust ingress prevention, chemical splash resistance |
| Construction Site Equipment Protection | Prolonged sun exposure, heavy rain, site dust and mud accumulation |
| Awning and Tent Structures | Tension stress at anchor points, seasonal UV intensity, wind load |
| Wood and Lumber Covers | Moisture ingress prevention, fungal growth resistance, stack weight compression |
Why Material Data Sheets Matter More Than Quoted GSM
Every roll ships with a verified material specification sheet stating exact GSM, base fabric denier, and coating weight for independent verification upon arrival.
Buyers frequently report that the GSM stated on the quotation does not match the material that arrives on site. Lightweight variance of even a small percentage across a large roll order can compromise tensile behaviour and reduce service life under load. This PVC coated tarpaulin base fabric denier coating weight specification is locked in at production and documented before dispatch. [NEED_CITE: material variance impact on coated fabric tensile performance]
The Role of Base Fabric in Coated Performance
The 500D-500D polyester yarn count forms the structural backbone of this PVC coated tarpaulin. Denier directly influences how the fabric distributes tensile load across the warp and weft directions. A balanced 500D-500D construction means the warp and weft yarns carry equal load capacity, which is critical when the fabric is tensioned unevenly — such as on a truck side curtain where the drop weight and wind pressure create multi-directional stress.
Coating Adhesion and Long-Term Delamination Risk
Double-sided PVC coating must bond securely to the polyester base to prevent delamination under thermal cycling. When a truck cover moves from cold morning temperatures to midday heat, the coating and base fabric expand at different rates. Process control over coating weight and adhesion determines whether the layers stay integrated or begin to separate at the edges and weld lines over repeated cycles. [NEED_CITE: coating adhesion test methods for PVC polyester laminates]
How Yarn Count, Coating Method and GSM Interact
The 500D×500D base fabric provides a defined tensile floor, but the final tear resistance depends on how tightly the PVC coating locks the yarn intersections in place. Coating weight — measured as GSM — adds mass but does not automatically add strength if the base fabric weave is too open for the coating to penetrate fully. Conversely, a dense weave with insufficient coating weight leaves yarns exposed to abrasion. The relationship between base denier, weave density, and coating mass must be balanced for the intended application, and this balance is confirmed through the material specification sheet that accompanies each shipment.
What Happens When Coating Weight Varies Between Rolls
When rolls in the same shipment carry different coating weights, the problem becomes visible only during fabrication. Panels cut from lighter rolls will flex differently under tension, and weld seams joining mismatched panels create weak points that fail before the fabric itself does. Fabricators producing truck covers or awnings from multiple rolls need batch-to-batch GSM consistency to maintain weld parameter settings and seam integrity across the entire production run. Colour variation between rolls compounds this issue, as panels with different coating thicknesses may absorb dye differently, creating visible banding once installed side by side. [NEED_CITE: batch consistency requirements for coated fabric fabrication]
Why Source PVC Coated Fabric From Jinan Jinxiang
Nearly 30 years of focused coated fabric production provides deep process control over PVC coating weight and adhesion on polyester base materials. Three full production lines and 36 sets of professional equipment support consistent output volume with on-time delivery schedules. A 10-person R&D team handles material selection, custom sizing, and sample development within days for specific application requirements. Dedicated QA/QC operates at every production stage with 100% pre-shipment inspection, catching coating weight deviations before rolls leave the facility. ISO and CE certified production processes provide documented traceability for compliance-sensitive buyers.
Documentation & Verification
- Material specification sheet stating GSM, 500D×500D base fabric denier, and PVC coating type per order
- Test reports for flame retardant grades issued where applicable to the specified grade
- Test reports for anti-UV treatment issued where applicable with the test basis stated
- Pre-shipment inspection record confirming coating weight and colour reference against order
- Certificate of origin and customs documentation for international shipment clearance
Fabrication, Handling & Storage
- Hot air welding temperature and speed must be calibrated to the specific PVC coating weight for seam integrity
- Store rolls upright on pallets to prevent permanent creasing of the smooth leather-like surface texture
- Avoid dragging 500D polyester base fabric across abrasive surfaces during unloading to prevent coating scuffs
- Clean with mild detergent only — solvent-based cleaners may degrade the PVC coating surface finish
- Field repairs are achievable using standard hot air welding equipment matching the coating material
What We Need To Quote Accurately
Provide the specific application — whether truck side curtain, equipment cover, awning, or tent — along with the exposure conditions the fabric will face. Confirm whether your market requires a specific flame retardant grade or anti-UV test basis so we can supply the correct documentation. Specify the required roll width, colour reference, and estimated annual volume to determine production scheduling and sampling requirements.
Frequently Asked Questions
Q: How is the GSM of each roll verified before shipment?
A: Every roll undergoes 100% pre-shipment inspection with dedicated QA/QC at each production stage. A material specification sheet ships with each order stating the exact GSM, 500D×500D base fabric denier, and PVC coating type for your independent verification upon arrival.
Q: What flame retardant documentation can you provide for site inspection?
A: Flame retardant treatment is available in multiple grades. Confirm the specific grade required for your market and application, and we will supply the corresponding test report. The exact grade and test basis are stated on the documentation accompanying your shipment.
Q: How do you ensure colour consistency across multiple rolls in one order?
A: Process control over coating weight and pigment mixing maintains batch-to-batch colour consistency. Rolls within the same order are produced under the same coating parameters and undergo pre-shipment colour reference verification to prevent visible variation once panels are installed side by side.
Q: What is the recommended welding method for this PVC coated polyester fabric?
A: Hot air welding is the standard fabrication and repair method for this material. Welding temperature and travel speed should be calibrated to the specific coating weight. We recommend running test welds on sample material to dial in parameters before full production.
Q: Can I order custom widths and colours before committing to bulk?
A: Yes. Our 10-person R&D team develops samples within days for custom width, colour, and treatment requirements. Approve the sample before bulk production proceeds to confirm the material meets your fabrication and performance expectations.
