Description
Verified GSM Per Roll — every roll ships with documented weight matching the quoted specification, confirmed by 100% pre-shipment inspection before dispatch.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Weight | 500 to 800 g/m² (confirm exact grade per order) |
| Base Fabric | Vinyl coated polyester |
| Waterproof Rating | Anti-permeable ≥20KPa |
| Flame Retardant | ≤10 seconds (grade not stated in source — confirm standard required for your market) |
| Low-Temperature Flexibility | -30°C (no fracture under plier bend test) |
| Seaming Method | High-frequency heat welding |
| Edge Reinforcement | Reinforced rip-stop edges |
| Anti-Mildew | Yes |
| Corrosion Resistance | Acid, alkali and brine |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Truck and trailer side curtains | Constant flexing at load points, road debris abrasion, rain and UV exposure during transit |
| Industrial equipment covers | Outdoor storage with chemical exposure from acid, alkali or brine environments |
| Open-air stockpile covers | Prolonged weathering, wind loading on large unsupported spans, mildew in humid climates |
| Container and pallet wrapping | Repeated handling friction, stacking pressure, moisture ingress risk at seams |
Why Quoted GSM Rarely Matches What Arrives on the Dock
The roll you receive should weigh what the specification sheet says — and it must be verified before it leaves the factory floor.
Procurement teams across the transport and industrial covering sector frequently report PVC coated tarpaulin rolls arriving lighter than the quoted weight. The discrepancy is not always obvious until fabrication begins or the cover is installed and fails under load. [NEED_CITE: industry reports on GSM deviation in imported coated fabrics]. When you source PVC coated tarpaulin roll wholesale, batch-to-batch consistency in weight and coating thickness matters as much as the stated grade itself. A roll that is even marginally underweight can compromise tensile performance at the exact stress points where truck covers and industrial wraps flex most.
Batch Weight Verification Before Dispatch
Each roll in a PVC coated tarpaulin roll wholesale order undergoes weight verification against the quoted GSM before leaving the production line. The documented specification sheet travels with the shipment so your receiving team can cross-check immediately on arrival. This eliminates the guesswork that typically follows container unloading and prevents costly rework when fabric weight does not match fabrication assumptions.
High-Frequency Heat Welding Integrity
The high-frequency heat welding process used for joining panels in this vinyl coated polyester fabric produces seams that match the base material in strength. Unlike adhesive bonding or mechanical stitching, the welded joint fuses coating layers at a molecular level. [NEED_CITE: high-frequency welding principles for PVC coated polyester]. This means the seam will not become the failure point when the cover flexes over a shifting load or when wind loads cycle across an open-air stockpile wrap.
Specifying the Right Grade for Your End Use
Understanding What GSM Actually Controls
Weight in grams per square metre reflects the combined mass of base polyester fabric and PVC coating layers, not strength in isolation. A 500 g/m² roll with a tightly woven high-denier base may outperform a 650 g/m² roll built on a looser, heavier-yarn weave. When evaluating PVC coated tarpaulin roll wholesale options, request the base fabric denier and thread count alongside the GSM figure. The coating weight and method — here achieved through high-frequency heat combination — determine surface adhesion and weldability, while the base fabric construction governs tear propagation resistance and long-term dimensional stability under tension.
Low-Temperature Flexibility and Chemical Resistance
The -30°C low-temperature flexibility rating means the PVC coating retains pliability without cracking when bent in cold-climate transport or winter storage applications. Combined with resistance to acid, alkali and brine corrosion, this grade range suits industrial environments where chemical splash or marine-adjacent storage conditions would degrade standard tarpaulin formulations. The anti-mildew treatment prevents biological degradation during prolonged outdoor exposure in humid regions, extending service intervals for covers that remain deployed across seasons. [NEED_CITE: PVC coating behaviour under chemical exposure and low-temperature cycling]
The Cost of Ignoring Roll-to-Roll Consistency
What Happens When Batch Colour or Weight Shifts Mid-Order
A container load of PVC coated tarpaulin rolls with inconsistent colour between batches forces fabricators to either reject partial stock or install visibly mismatched panels on the same truck or structure. Weight variation within a single order creates uneven tension during welding, producing seam lines that pucker or delaminate under stress. [NEED_CITE: coating weight variation and its effect on heat-weld parameters]. These failures typically surface after installation, when replacement cost and downtime far exceed the original material savings from choosing a lower-priced supplier.
Production Capacity and Process Control
The facility operates three full production lines with 36 sets of professional equipment dedicated to coated fabric output, supporting bulk container orders with consistent scheduling. A 10-person R&D team handles grade selection, custom width requests and sample development within days rather than weeks. Every roll passes through dedicated QA/QC checkpoints at each production stage, with 100% inspection before shipment — not a statistical sample but a full physical check on weight, coating adhesion and surface finish. This process control applies equally to standard stock grades and custom-specified rolls, which is critical when sourcing PVC coated tarpaulin roll wholesale for distributor inventory or fleet replacement programmes.
Documentation & Verification
- Material specification sheet stating exact GSM, base fabric denier and coating weight for each batch
- Pre-shipment inspection record confirming roll weight and coating integrity against quoted values
- Roll packing list with container loading details by roll count, lot reference and total weight
- Flame retardant test report supplied on request — confirm the standard required for your destination market
Fabrication, Handling & Storage
- Set high-frequency welder dwell time and pressure to match the 500–800 g/m² range — test on scrap first
- Store rolls upright on cores to prevent flat-spot creasing that weakens the PVC coating at fold lines
- Allow cold-stored rolls to acclimatise above 5°C before unrolling to avoid coating micro-cracking
- Use compatible PVC-based adhesives for field repairs on the vinyl coated polyester surface
- Cut panels with coated side up and support the rip-stop edge during welding to maintain seam alignment
- Plan cutting layout to maximise yield from standard roll widths and minimise offcut waste
Request a Quotation With Your Exact Requirements
Provide the target GSM grade, required roll width and total metreage so we can confirm stock availability or production lead time. Specify whether your end application requires flame retardant certification and which standard your market demands — this determines formulation and test documentation. Include delivery port and preferred container loading configuration so the quotation covers logistics accurately from the outset.
Frequently Asked Questions
Q: What GSM grades are available from stock for immediate dispatch?
A: Standard stock covers the 500 to 800 g/m² range in common widths. Exact grade availability varies by production cycle, so confirm your required weight and quantity for current lead times. Custom GSM grades outside this range can be produced subject to minimum order quantities.
Q: How do you guarantee the GSM matches what was quoted?
A: Every roll undergoes weight verification at the production line and again during 100% pre-shipment inspection. The documented specification sheet accompanies each roll batch, allowing your receiving team to cross-check immediately upon container arrival.
Q: Can I order custom widths or colours with reasonable minimums?
A: Custom widths and colours are available through the R&D team with sample development completed within days. Minimum order quantities depend on the specific colour formulation and width requested — provide your annual volume for tiered pricing.
Q: What documentation ships with each roll order?
A: Each shipment includes a material specification sheet, pre-shipment inspection record, roll packing list with lot traceability, and certificate of origin. Flame retardant test reports are supplied upon request against the applicable standard for your market.
Q: How many rolls fit in a standard shipping container?
A: Container loading depends on roll width, diameter and total weight. The roll packing list details exact roll count and weight per container. Provide your required roll dimensions for a loading plan before confirming your order.
