Coating Weight Verified — Every roll is checked at the coating stage against the specified 650 GSM, so fabricators and technical buyers receive a consistent material platform for welding and structural use.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Weight | 650 GSM |
| Base Fabric Denier Options | 200D×300D, 500D×500D, 840D×840D, 1000D×1000D |
| Finish Options | Glossy or matte |
| Colour Options | Blue, yellow, black, green, white, or custom |
| Temperature Range | -15ºC to 70ºC |
| Waterproof | Fully waterproof coated construction |
| UV Treatment | Customized (test basis not stated in source) |
| Flame Retardant | Treated (grade not stated in source — confirm the grade required for your market) |
| Anti-Fungal | Treated |
| Working Life | Suited to extended outdoor exposure depending on environment |
| OEM / ODM | Available on request |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Truck and trailer side curtains | Constant flexing at fold lines, road debris abrasion, prolonged UV exposure, weld seam integrity under load movement |
| Tent and awning panels | Heat-seamed or welded joint strength, wind load tensile stress, rainwater runoff and pooling, seasonal UV degradation |
| Roof and temporary structure membranes | Standing water exposure, thermal expansion cycles, wind uplift tension, fire compliance for enclosed public spaces |
| Industrial ventilation ducting | Continuous airflow flex, fire-retardant and anti-static compliance, seam adhesion under positive pressure |
Why a Stated GSM Can Still Leave Your Fabric Underperforming
Weight is only meaningful when the coating-to-base-fabric adhesion is controlled at the production stage.
Technical buyers often specify a PVC coated tarpaulin 650 gsm roll based on the quoted weight, only to find the material behaves lighter than expected once on the welding table. The issue is rarely the scale reading itself — it is the balance between coating mass and base fabric density. A roll can hit the target GSM by loading more plasticiser into the PVC compound, but the resulting fabric may show reduced tensile performance and weaker weld-line adhesion. When the specification focuses on weight alone without referencing the base denier or coating process, the material may pass incoming inspection yet fail during fabrication or in early field service. [NEED_CITE: tensile and tear test methods for coated fabrics per ISO 1421]
Base Fabric Denier Selection for Weld Integrity
The denier of the base fabric determines how the PVC coated tarpaulin 650 gsm responds to heat welding. A 500D×500D weave allows the heat to penetrate evenly through the coating into the yarn structure, producing a bond where the weld line matches or exceeds the fabric strength. Moving to an 840D×840D or 1000D×1000D construction increases tear resistance for heavier-duty side curtain and structural applications, but requires adjusted welding parameters to achieve t*ide the GSM gives fabricators a predictable material to set their hot-air or high-frequency welding equipment against.
Coating Adhesion and Seam Behaviour
What separates a durable weld from a premature delamination is the adhesion strength between the PVC coating layer and the polyester base fabric. When adhesion is weak, the coating separates from the yarns at the flex point — typically where a truck side curtain folds or where a duct bend concentrates stress. Our production process controls coating weight application and curing temperature so the PVC compound bonds into the base weave rather than sitting on the surface. This matters directly for fabricators building welded panels, because a seam that fails before the fabric body does represents a quality claim against the finished product. [NEED_CITE: coating adhesion test methods for PVC tarpaulin per ISO 2411]
Reading the Specification Beyond the Weight Number
The 650 GSM rating describes total fabric mass per square metre, combining the polyester base cloth and the PVC coating on both faces. Two rolls at the same weight can perform very differently depending on how that mass is distributed. A heavier base fabric with a thinner coating will show higher tear resistance but may compromise surface abrasion performance. Conversely, a lighter base with a thicker coating may weld easily but tear more readily at stress concentrations. The available denier range — from 200D×300D for lighter applications to 1000D×1000D for maximum mechanical strength — allows the PVC coated tarpaulin 650 gsm to be specified precisely for the end-use rather than treated as a single commodity grade. The glossy or matte finish option further influences how the surface handles dirt accumulation and whether printed branding adheres cleanly for visible applications.
The Cost of Specification Gaps at the Receiving Dock
When a ventilation duct arrives on a mining site without documented fire-retardant certification, the entire installation can be halted pending compliance review. Similarly, rolls that show colour variation when unrolled side by side force the fabricator to either reject the batch or accept a visible mismatch in the finished structure. Weld seams that separate under normal flex loading — before the fabric body itself shows wear — point to a coating adhesion problem that incoming weight checks alone would never catch. These are not theoretical failures; they are the consequences of specifying by weight without tying the requirement to verifiable coating process controls. [NEED_CITE: fire classification standards for textile materials in mining ventilation]
Why Technical Buyers Source This Grade From Jinxiang
Nearly three decades of coated fabric production underpin the process control applied to every roll of PVC coated tarpaulin 650 gsm leaving our facility. Three full production lines and 36 sets of professional equipment support the bulk capacity needed for container-load orders while maintaining batch-to-batch consistency in weight and colour. A dedicated 10-person R&D team handles denier selection guidance, custom colour matching, and sample development so that fabricators can validate welding parameters before committing to a production run. Every roll passes 100% pre-shipment inspection covering weight verification, dimensional accuracy, and visual surface quality — not a sampling protocol, but a full roll-by-roll check. ISO and CE certification supports compliance documentation for export markets across North America, Europe, and Asia.
Documentation & Verification
- Material specification sheet stating exact 650 GSM, base denier, and coating type per roll
- UV and flame-retardant test reports referencing the applicable standard on request
- Pre-shipment inspection record confirming weight and dimensional compliance per roll
- ISO and CE certificates included with each shipment for regulatory compliance
- Roll packing list with gross and net weight for customs and freight planning
- Certificate of origin available for preferential tariff treatment where applicable
Fabrication, Handling & Storage
- Set hot-air welding temperature to match the 650 GSM coating thickness and selected base denier
- Allow matte finish rolls to reach ambient temperature before unrolling to avoid surface creasing
- Store rolls horizontally on pallets in shaded conditions to prevent UV exposure before fabrication
- Use sharp rotary blades when cutting 840D×840D or 1000D×1000D base variants to avoid yarn fraying
- Clean glossy finish surfaces with mild detergent only — solvent-based cleaners may soften the PVC coating
- Support the full roll width during transport to prevent edge compression marks on the coating
What to Include With Your Enquiry
To provide a material recommendation that matches your fabrication process, we need to understand the end-use environment and any compliance requirements your market demands. Share the application type, required fire-retardant or anti-static grade if applicable, preferred base denier, and whether you need roll stock or finished cut-to-size panels. Colour references or Pantone codes help us prepare accurate samples, and your estimated annual volume allows us to structure pricing tiers accordingly.
Frequently Asked Questions
Q: How is the 650 GSM weight verified before dispatch?
A: Every roll is weighed and checked against the stated 650 GSM specification during our 100% pre-shipment inspection. The inspection record accompanies the shipment, showing the actual weight measured per roll. This is total fabric weight including both PVC coating faces and the polyester base fabric, not coating weight alone.
Q: Which base denier should I choose for welded seams versus sewn construction?
A: For welded panels such as truck side curtains, a 500D×500D base allows consistent heat penetration and strong seam bonds. For sewn construction with mechanical fasteners, 840D×840D or 1000D×1000D provides the yarn density needed to resist tear propagation around stitch holes and eyelet points.
Q: What test basis supports the UV treatment claim?
A: UV treatment is customised to order and the applicable test standard depends on the target market and exposure duration. Request a test report referencing the specific UV ageing standard required for your region when placing your enquiry, and we will confirm the available testing basis for this grade.
Q: Is a certified flame-retardant grade available at this weight?
A: Flame-retardant treatment is available for the 650 GSM PVC coated tarpaulin. The specific grade — such as M2, B1, or NFPA 701 — must be confirmed based on your market requirements. State the standard you need in your enquiry so we can provide the matching test documentation with the shipment.
Q: How is batch colour consistency controlled across multiple rolls?
A: Colour matching is managed through controlled pigment dosing at the coating stage, and each production batch is compared against the approved reference sample. For orders spanning multiple production runs, we retain a master colour standard to minimise roll-to-roll variation and ensure visual consistency when panels are installed side by side.
