Proven Coating Adhesion — double-sided PVC coating on 500D×500D polyester base fabric, controlled for consistent GSM weight and reliable hot-air weld performance across every roll.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Fabric |
| Base Fabric | Polyester, 500D-500D Yarn Count |
| Coating Material | PVC, Double-Sided |
| Thickness Measurement | 450-900 g/m² |
| Surface Characteristics | Smooth, soft surface with leather-like texture |
| Key Features | Water Resistant, Waterproof, Flame Retardant (grade not stated in source), Anti-UV (test basis not stated in source) |
| Repairability | Repairable by hot air welding |
| Service Life | 3-5 years |
| Standards | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Truck and trailer load covering | Constant flexing at tie-down points, road debris abrasion, prolonged UV exposure, rain and snow load |
| Vehicle and machinery protective covers | Outdoor storage, dust ingress, condensation, repeated fitting and removal stress |
| Awning and tent fabrication | Tensioned frame loading, wind uplift, solar degradation, welded seam integrity at corners |
| Wood and equipment outdoor storage | Moisture penetration risk, ground contact abrasion, long-term weathering without shelter |
What Quoted GSM Does Not Reveal About Coated Fabric Strength
Coating weight and base fabric denier together determine real-world performance — GSM alone is only part of the specification.
Buyers frequently discover that the PVC coated polyester fabric arriving on-site feels noticeably lighter than what the quotation promised. The stated figure often reflects total weight, but without a breakdown of base fabric contribution versus coating load, the number becomes unreliable for comparing tensile capacity across suppliers. Technical buyers specifying PVC Coated Tarpaulin fabric for welded covers need documented GSM data paired with denier information to predict how the material behaves under tension and at flex points [NEED_CITE: tensile and tear test methods for coated fabrics per ISO 1421].
Base Fabric Construction and Dimensional Stability
The 500D×500D polyester yarn count provides a stable grid structure that resists elongation when the fabric is tensioned over frames or loads. This denier specification is critical for fabricators who hot-air weld seams, because a base fabric that stretches unevenly will cause weld lines to distort during assembly. PVC Coated Tarpaulin fabric built on this construction maintains flat, predictable behaviour through cutting and joining stages.
Double-Sided Coating and Seam Weld Integrity
Double-sided PVC coating ensures that both faces of the base fabric are fully encapsulated, which directly supports hot-air welding performance. When only one side carries adequate coating weight, the uncoated fibres at the weld interface create a weak boundary that fails before the surrounding fabric does. Consistent coating on both faces means the weld fuses PVC to PVC rather than PVC to exposed yarn [NEED_CITE: coating adhesion and peel strength testing for laminated fabrics].
Interpreting GSM, Denier and Coating Weight Together
A 450-900 g/m² range covers multiple product grades, and the total GSM number tells you little without knowing how that weight is distributed. A fabric achieving its GSM primarily through heavy coating on a light base fabric will tear more easily than one with a denser yarn structure and proportionate coating. The 500D-500D base fabric denier here sets a floor for tensile contribution, while the double-sided PVC coating adds surface protection and weld-ability. Bright or matte surface finish options affect how the material handles dirt accumulation and whether printed branding adheres predictably. Flame retardant and anti-UV treatments are available in grades that must be confirmed per your market requirements before production begins.
The Hidden Cost of Specifying on Price Per Kilogram
When purchasing decisions focus exclusively on cost per kilogram rather than documented material properties, the consequences surface during fabrication and installation. Rolls that arrive underweight relative to the quoted GSM produce covers that tear at eyelets and fail at welded seams within months of deployment. Flame retardant grades claimed without supporting test reports lead to rejected shipments at sites requiring DIN 4102 or NFPA 701 compliance. Batch-to-batch colour variation becomes visible only after multiple rolls are installed side by side on a single structure, forcing costly rework [NEED_CITE: common failure modes in coated technical fabrics under field conditions].
Why Source This Coated Fabric Here
Three full production lines and 36 sets of professional equipment support bulk roll output with consistent coating weight control across the entire order. A dedicated 10-person R&D team handles material selection, custom colour matching and sample development within days rather than weeks. Every production stage includes QA oversight, with 100% pre-shipment inspection verifying GSM, colour and surface quality before dispatch. Deep process control over coating adhesion has been refined across nearly 30 years of focused coated fabric manufacturing. Sample rolls can be developed to your exact GSM, colour and treatment specification before you commit to full production.
Documentation & Verification
- Material specification sheet stating exact GSM, 500D-500D base fabric denier and PVC coating weight per side
- Test reports for flame retardant grade and UV resistance matched to the production batch where specified
- Pre-shipment inspection record confirming roll-to-roll GSM and colour consistency across the full order
- ISO and CE certificates included in the documentation package with each export shipment
- Certificate of origin and customs documentation prepared for destination-country import requirements
Fabrication, Handling & Storage
- Hot-air weld temperature must match the PVC coating formulation to achieve full seam fusion on this double-sided coated fabric
- Store rolls horizontally on pallets to prevent permanent creasing of the smooth leather-like surface finish
- Allow cold-stored rolls to reach ambient temperature before unrolling to avoid coating micro-cracking on the 500D base fabric
- Use compatible PVC-based repair patches and hot-air welding for field repairs rather than adhesive tapes
- Plan cutting layouts around available roll widths to minimise offcuts and welded seam count on large covers
Requesting a Specification Match
Provide the end-use application, expected environmental exposure and any fire safety or UV stability requirements specific to your market. Specify the target GSM, colour reference and whether you require roll stock or finished cut-to-size panels. Share your annual volume estimate and preferred roll dimensions so we can confirm production scheduling and batch consistency for repeat orders.
Frequently Asked Questions
Q: How is GSM verified before shipment and what documentation supports the quoted weight?
A: A material specification sheet is issued before production, stating the exact GSM, base fabric denier and coating weight. During pre-shipment inspection, GSM is spot-checked on sampled rolls and recorded in the inspection report. This documentation accompanies the shipment so you can cross-reference quoted values against verified measurements on arrival.
Q: What flame retardant grades are available and which test reports accompany the fabric?
A: Flame retardant treatment is available in multiple grades suited to different regional standards. The specific grade required for your market must be confirmed at inquiry stage. Where a grade is specified and produced, a matching test report is included in the documentation package shipped with your order.
Q: How is colour consistency controlled when ordering multiple rolls of the same specification?
A: Colour reference documentation is established at sample approval stage and used as the production benchmark. The QA team verifies colour matching across all rolls in the order during pre-shipment inspection. Rolls showing visible variation against the approved reference are held and reworked before dispatch.
Q: How does PVC coated polyester compare to PE tarpaulin in strength and repairability?
A: PVC coated polyester fabric offers substantially higher tensile and tear resistance than PE woven tarpaulin, particularly at welded seams. Hot-air welding creates a fused PVC-to-PVC joint on this material, while PE tarpaulin typically relies on heat-sealed or stitched seams that are less durable under repeated flexing and load stress.
Q: Can I get a sample developed to my exact specification before committing to bulk?
A: Yes. Provide your target GSM, colour, treatment requirements and any specific width or finish preference. A sample roll is developed within days using the same coating process and base fabric as production material, allowing you to verify weight, weld performance and appearance before confirming the full order.
