Description
Coating Weight Control — Every roll is weighed against the stated GSM before dispatch, giving wholesale buyers a verifiable record rather than a label claim.
Technical Specifications
| Parameter | Value |
|---|---|
| Product Type | PVC Coated Tarpaulin Roll |
| Base Fabric | Rip-stop polyester |
| Weight (GSM) | 500 to 800 g/m² (confirm specific grade per order) |
| Coating Material | PVC (vinyl coated) |
| Waterproof Rating | Anti-permeable ≥20KPa |
| Flame Retardant Grade | ≤10 seconds (grade not stated in source — confirm the grade required for your market) |
| Low-Temperature Flexibility | Not fractured by pliers at -30℃ |
| Coating Method | Heat combined with high-frequency welding |
| Anti-Mildew | Mildew proofing properties stated (test basis not stated in source) |
| Anticorrosion | Acid, alkali and brine corrosion resistance stated (test basis not stated in source) |
| Water Absorption | Almost no absorbable water, drying quickly after rain |
| Edge Reinforcement | Reinforced edges with rip-stop construction |
| Finish | Rubberized vinyl coated surface |
Application Suitability
| Application | Exposure & Requirement |
|---|---|
| Truck and trailer load covering | Road vibration, flexing at tie-down points, rain and wind-driven moisture, UV exposure during transit |
| Construction site and equipment protection | Dust, debris, standing water, chemical splash, frequent repositioning over uneven surfaces |
| Logistics fleet weather shielding | Daily loading dock abrasion, repeated folding and unfolding, long-term outdoor storage exposure |
| Agricultural and aquaculture stock covering | Continuous water contact, soil chemistry, organic acids, puncture risk from sharp stock edges |
Why GSM on the Label Is Not Enough for Wholesale Buyers
Buying PVC Coated Tarpaulin Roll wholesale means you need proof that every roll in the container matches what was quoted — not just one sample sent before the deal closed.
When you import twenty rolls and five of them come in lighter than the agreed weight, your downstream customers will notice the difference the moment they try to weld a seam or hang the fabric on a frame. A 500 to 800 g/m² family covers a wide range, and without per-roll verification, you cannot guarantee consistency to the fabricators and distributors depending on your supply [NEED_CITE: pre-shipment inspection standards for coated fabric rolls per ISO 1421]. Batch colour shifts compound the problem: two rolls from the same order laid side by side reveal a visible tone difference that forces your customer to reject the entire batch.
Batch-to-Batch Colour Consistency Across Roll Stock
Distributors importing full-container loads need confidence that roll number one and roll number twenty share the same colour reference. PVC coated tarpaulin rolls produced across different coating runs can drift in shade if pigment ratios and oven temperatures are not locked between batches. We record the colour reference for each production run and inspect rolls against that standard before packing, so your inventory stays uniform across multiple shipments.
Container Loading and Roll Packing for Volume Buyers
Roll stock destined for ocean freight must survive weeks inside a steel container where temperature swings and humidity can crease or stick poorly packed material. Each PVC Coated Tarpaulin Roll wholesale order is packed with a container loading plan that accounts for roll count, gross weight and stacking orientation [NEED_CITE: coating adhesion failure caused by improper roll stacking during ocean transit]. This prevents edge crushing and surface transfer that would render rolls unsellable on arrival.
How GSM and Base Fabric Denier Work Together
The weight of a coated fabric is the sum of the base polyester and the PVC coating applied to both sides. A heavier GSM does not automatically mean a stronger roll — a 500 g/m² fabric woven from high-denier rip-stop polyester can outperform a 700 g/m² fabric built on a lighter base cloth with more coating to reach the target weight. The rip-stop weave in this PVC Coated Tarpaulin Roll stops small tears from propagating across the panel, which matters when fabricators cut and weld the material into fitted covers that flex under load. The heat combined with high-frequency welding method bonds the coating layers without delaminating at the seam, a critical factor when welded joints must hold as long as the fabric itself.
What Happens When Roll Stock Specifications Are Wrong
A distributor who stocks the wrong GSM grade for their regional market ends up with dead inventory that neither fabricators nor end users will buy. When flame retardant grades are specified without a supporting test report, the fabric can fail a site inspection and the entire project stalls until replacement material arrives [NEED_CITE: fire-retardant compliance requirements for temporary structures and site covers]. Welded seams that fail before the fabric body often trace back to incorrect heat settings for the specific coating thickness, leaving fabricators with warranty claims they cannot resolve without changing their welding parameters for each roll grade they buy.
Why Wholesale Buyers Source Roll Stock Here
Three full production lines run dedicated batch runs for PVC Coated Tarpaulin Roll wholesale orders, meaning your rolls are not squeezed between unrelated production jobs that risk cross-contamination of colour or coating weight. A ten-person R&D team develops custom width and colour samples within days, shortening the approval cycle before your bulk order enters production. Every roll passes a dedicated QA checkpoint where GSM is verified by weight and recorded before packing — not sampled from a single roll and assumed for the whole batch. Pre-shipment inspection covers one hundred percent of the rolls in your order, not a random subset, so the packing list you receive matches the physical cargo in the container.
Documentation & Verification
- Material specification sheet stating GSM, base fabric denier and coating weight per roll batch
- Pre-shipment inspection record with roll-by-roll weight verification against quoted grade
- Roll packing list detailing roll count, net weight and container loading plan per shipment
- Certificate of origin and customs documentation support for cross-border import clearance
- Colour reference record tied to each production run for batch traceability
Fabrication, Handling & Storage
- High-frequency welding parameters must be adjusted for the specific 500 to 800 g/m² grade to avoid seam delamination
- Reinforced edges with rip-stop construction require heavier needle or welder pressure at hem lines
- Store rolls upright on pallets to prevent edge crushing and permanent creasing across the PVC coating
- Allow cold-stored rolls to acclimatise before unrolling to avoid coating crack at -30℃ threshold
- Use mild detergent only — harsh solvents degrade the rubberized vinyl coated surface finish
What to Include in Your Roll Stock Inquiry
Tell us the GSM grade you standardise on, the roll widths your market requires and your annual volume so we can allocate production capacity and confirm colour consistency across your order schedule. Specify whether you need flame retardant or anti-UV grades and which test standard your market demands, so we include the correct test report with your shipment. If you require custom widths or printed branding on the roll, provide the artwork and target dimensions for sample development before bulk commitment.
Frequently Asked Questions
Q: How is GSM verified per roll and what does the pre-shipment inspection cover?
A: Every roll in your order is individually weighed and the result recorded against the quoted GSM before packing. The pre-shipment inspection covers one hundred percent of rolls — weight, colour reference, coating surface quality and edge condition — not a random sample. You receive the inspection record alongside the roll packing list so you can reconcile the physical cargo on arrival.
Q: What roll widths and lengths are stocked, and how is batch colour consistency controlled?
A: Standard and custom widths are produced on dedicated runs to prevent colour drift between batches. Each production run is tied to a specific colour reference, and rolls from the same order are inspected side by side before packing. If you order across multiple shipments, we match the colour reference from your first approved batch to subsequent runs.
Q: What is the MOQ per colour and per GSM grade for roll-stock orders?
A: Minimums depend on the specific width, GSM grade and colour you require. Standard stock grades and widths carry lower minimums than custom colours or non-standard widths. Provide your target specification and volume so we can confirm the applicable minimum and production lead time for your roll-stock order.
Q: How are rolls packed for container loading to prevent transit damage and creasing?
A: Rolls are packed upright or horizontally depending on the container type and roll dimensions, with edge protectors and wrapping to prevent surface transfer and crushing during ocean freight. A container loading plan is prepared before dispatch showing roll count, weight distribution and stacking sequence so you can verify the load on arrival.
Q: Can custom widths or colours be produced, and what are the lead times?
A: Custom widths and colours are developed as samples first, with the R&D team producing a sample roll for your approval before bulk production enters the queue. Lead times for custom specifications are confirmed at quotation stage and depend on the coating run schedule and your order volume.
