Coating Weight Verification — Every roll of 900GSM PVC coated tarpaulin is checked against its material specification sheet before dispatch, ensuring the quoted weight matches what arrives at your dock.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin |
| Weight | 900GSM |
| Base Fabric Denier Options | 200Dx300D, 500Dx500D, 840Dx840D, 1000Dx1000D |
| Coating Material | PVC |
| Coating Method | Knife Coated |
| Surface Finish | Glossy or Matte |
| Colour Options | Blue, Yellow, Black, Green, White, custom |
| Temperature Range | -15°C to 70°C |
| Waterproof | Yes |
| UV Treatment | Available — confirm test basis for your market |
| Flame Retardant | Available in FR grades — confirm the grade required for your market |
| Anti-Fungal | Treated |
| Working Life | 3–10 years depending on usage environment |
| Standards | ISO, CE |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Lorry side curtains | Repeated flexing at load points, road spray, abrasion against trailer frame, UV exposure across long-haul routes |
| Heavy-duty transport covers | Tensile stress from tie-downs, wind flutter, puncture risk from sharp-edged cargo |
| Panama tarpaulin curtains | Constant sun exposure, salt-air environment, frequent roll-up and deployment |
| Industrial outdoor covers | Prolonged weather contact, dust and debris loading, thermal cycling across seasons |
Why GSM Alone Does Not Tell You How Strong the Fabric Is
A 900GSM PVC coated tarpaulin with a 200Dx300D base will tear far more easily than the same weight built on a 1000Dx1000D base fabric.
Many buyers specify PVC coated tarpaulin by weight alone, then discover on arrival that the material lacks the tensile and tear performance their application demands. The base fabric denier and weave density determine how the fabric handles stress at fold lines and attachment points — the places where lorry curtains and transport covers most often fail. Weight without context is an incomplete specification. [NEED_CITE: tensile and tear test methods for coated fabrics per ISO 1421]
Coating Adhesion and the Knife Coating Process
This 900GSM PVC coated tarpaulin is produced using a knife coating process, where PVC compound is applied directly onto the base fabric under controlled blade pressure. Knife coating forces the PVC into the weave interstices, creating a mechanical bond that resists delamination when the fabric is folded, welded, or subjected to wind load. For lorry curtain applications where the material flexes hundreds of times per trip, coating adhesion is as critical as coating weight.
Surface Finish Selection for Operational Conditions
The glossy finish sheds water and road grime more readily, making it practical for fleet operators who need tarps that clean quickly between loads. The matte finish reduces glare and provides better surface grip for printed branding or applied markings. Both finishes are available across the full colour range, and the choice should match how the PVC coated tarpaulin fabric will be handled, cleaned, and identified in the field. [NEED_CITE: surface finish impact on dirt retention for PVC coated fabrics]
How Base Fabric Denier Interacts with Coating Weight
The 900GSM grade sits in the heavy-duty range, but its real-world strength depends entirely on which base fabric denier is selected. A 1000Dx1000D base provides maximum tensile and tear resistance for long-haul side curtains that face constant mechanical stress. A lighter denier such as 500Dx500D reduces cost and remains adequate for covers that see less dynamic loading. The coating weight and denier must be specified together — neither tells the full story in isolation. Temperature performance from -15°C to 70°C applies across denier options, meaning the fabric remains flexible in winter loading and stable in summer heat.
The Hidden Cost of Specifying Weight Without Denier
When a buyer orders 900GSM without specifying base fabric denier, the supplier may ship the lightest denier that achieves the target weight through heavier coating. The result is a material that meets the GSM check but tears at weld lines and flex points under operational load. For transport cover fabricators, this means seam failures in the field and warranty claims. For fleet operators, it means curtain replacements mid-contract. Specifying both denier and weight together, with a material spec sheet confirming both values, eliminates this mismatch before production begins. [NEED_CITE: weld line failure modes in heavy-duty PVC coated tarpaulin]
Why Source This Grade From Jinxiang
Three full production lines and 36 sets of professional equipment support consistent output across bulk roll orders, with coating weight held within tolerance from first roll to last. A dedicated 10-person R&D team develops custom width, colour, and cut-size samples within days, allowing buyers to confirm fit before committing to production volume. Every roll undergoes 100% pre-shipment inspection with GSM verification, so the material arriving at your facility matches the specification you approved. Fire-retardant and anti-static grades are available for markets requiring certified ventilation or transport compliance — request the test report specific to your target standard.
Documentation & Verification
- Material specification sheet confirming 900GSM weight and selected base fabric denier for each roll
- UV and flame-retardant test reports supplied per batch when treatment is specified
- ISO and CE certificates included with every shipment
- Pre-shipment inspection record with roll-by-roll GSM check
- Certificate of origin and customs documentation for international dispatch
Fabrication, Handling & Storage
- Heat welding parameters must match the knife coated PVC layer thickness to avoid seam delamination at flex points
- Reinforced hems at tie-down points distribute load across the 900GSM fabric and prevent eyelet pull-through
- Store rolls upright on pallets to prevent flat-spot deformation of the glossy or matte surface
- Allow cold-stored rolls to reach ambient temperature before unrolling to avoid coating crack at -15°C threshold
- Use PVC-compatible cleaners only — solvents degrade the knife coated bond between PVC and base fabric
- Plan cutting layout around standard roll widths to minimise off-cuts and welded seams on finished covers
What to Include in Your Enquiry
To specify this PVC coated tarpaulin accurately, share the base fabric denier you require, the target market’s fire safety or UV test standard, and whether you need rolls at standard width or custom-cut panels for specific trailer dimensions. If colour consistency across multiple rolls is critical for your installation, note this in the enquiry so batch matching is controlled from production. Sample development is available for approval before bulk commitment.
Frequently Asked Questions
Q: How do I verify 900GSM weight when the rolls arrive?
A: Each roll ships with a pre-shipment inspection record documenting GSM per roll. You can conduct an incoming check by cutting a measured sample, weighing it, and comparing against the stated 900GSM on the material specification sheet. Any discrepancy should be reported before the rolls enter production.
Q: Which base fabric denier suits lorry side curtains?
A: For lorry curtains facing daily flexing and road abrasion, an 840Dx840D or 1000Dx1000D base fabric is typically specified with the 900GSM coating weight. Lighter deniers may suffice for static covers. Request a sample in your preferred denier to test weld strength and drape before ordering.
Q: Can you supply test reports for flame-retardant treatment?
A: Flame-retardant grades are available, and test reports can be provided for the specific batch. Confirm the fire classification standard required in your target market — such as DIN 4102, NFPA 701, or a local building code — so the correct grade is produced and documented.
Q: How do you maintain colour consistency across multiple rolls?
A: Batch colour matching is controlled at the coating stage with reference to a confirmed colour sample. All rolls in a single order are produced in one coating run where possible. A pre-shipment inspection compares rolls side by side, and any visible variation is flagged before dispatch.
Q: What welding method works best for this knife coated fabric?
A: Hot-air welding and high-frequency welding both produce strong seams on knife coated PVC tarpaulin. The weld temperature and speed must suit the 900GSM coating thickness. We recommend running test welds on a sample piece to dial in parameters before welding full production panels.
