Engineered Coated Textiles · OEM Roll Supply
Industrial Tank Liner Fabric for Reliable Liquid Containment
Reinforced PVC coated polyester fabric developed for custom tank liners, process-water containment, wastewater holding, industrial reservoirs and fabricated liquid-storage systems.
DERFLEX supports converters, tank builders, liner fabricators, distributors and project procurement teams with weldable roll goods, custom coating structures and application-based specification matching. The material should be selected around the stored liquid, tank geometry, seam method, temperature, cycling frequency and required documentation—not around GSM alone.
LIQUID + TANK
+ SEAM DESIGN
For most fabricated industrial tank liners, the practical starting point is a reinforced, double-side coated and heat-weldable fabric. Final selection should then be adjusted for hydrostatic load, chemical exposure, folding or fill-and-drain cycles, substrate condition, installation method and regulatory requirements.
Tank Liner Material Is a Containment System Component, Not Just a Waterproof Sheet
A strong liner specification balances membrane integrity, reinforcement, weld quality and the real service environment.
Liquid Compatibility
Process water, wastewater, brine, diluted chemicals, oils and cleaning agents can affect flexible polymers differently. The exact liquid and concentration should be reviewed before a material is approved.
Hydrostatic & Mechanical Load
Tank height, unsupported zones, wall transitions, fittings and installation details influence the tensile, tear and puncture performance required from the reinforced fabric.
Seam Reliability
A liner is only as reliable as its welded joints. Fabric coating, surface finish, weld window, overlap design and operator process should be validated together before production.
Why Reinforced PVC Coated Polyester Is Commonly Chosen for Fabricated Tank Liners
The woven polyester layer acts as the structural skeleton, helping control stretch and supporting tensile and tear strength. The PVC coating creates the flexible liquid barrier, protects the reinforcement and provides a heat-weldable surface for panel fabrication.
For larger liners, frequent filling and draining, transport handling or site installation, reinforced construction can provide better dimensional control than an unsupported film. The correct grade still depends on whether the liner is fully supported, suspended, drop-in, exposed to sunlight, folded during transport or contacted by aggressive liquids.
- Double-side coating options for balanced surface protection.
- Custom scrim denier and density for mechanical requirements.
- Low-wick / edge-protection direction can be discussed for fabricated seams.
- Matte, smooth, lacquered or project-specific surface options.
- UV, cold-flex, mildew, abrasion or selected chemical-resistance formulations by application.
Industrial Tank Liner Fabric Specification Options
The ranges below are procurement starting points, not a universal specification. Final values should be confirmed by sample, technical data sheet and application testing.
| Parameter | Typical / Custom Direction | Why It Matters for Tank Liners |
|---|---|---|
| Material Structure | PVC coated polyester; double-side coated construction preferred for many fabricated liners | Combines reinforcement with a flexible, weldable liquid barrier. |
| Weight | Approx. 600–1500 g/m² or project-developed construction | Higher mass may support heavier-duty service, but performance depends on scrim and coating—not weight alone. |
| Thickness | Approx. 0.5–1.5 mm; custom options subject to structure and process | Affects handling, welding window, abrasion protection and finished liner flexibility. |
| Base Fabric | Commonly 1000D polyester and other custom yarn / density structures | Controls tensile strength, tear propagation and dimensional stability. |
| Roll Width | Custom roll width; industrial production commonly supports wide-format options | Wider rolls may reduce the number of seams and fabrication time. |
| Welding | HF, hot-air or hot-wedge compatibility depending on formulation and equipment | Seam process should be trialed on the buyer’s actual equipment before bulk fabrication. |
| Temperature | Standard and cold-resistant formulations available by project | Cold folding, hot liquid, ambient exposure and installation temperature can affect flexibility. |
| Surface | Matte / smooth / glossy / lacquered / customized | Influences cleanability, abrasion, handling and weld preparation. |
| Functional Options | UV, anti-mildew, abrasion, anti-wicking, oil-contact or selected chemical resistance | Specify only the functions required by the real exposure to avoid unnecessary cost. |
| Documentation | TDS, batch inspection, selected test reports, compliance documents by requirement | Procurement approval should rely on the documents required for the final application and destination market. |
Compliance note: For potable-water, food-contact or regulated chemical containment, do not approve material only from a generic product description. Send the required standard, test method and destination market to DERFLEX before quotation so the applicable grade and documentation can be reviewed.
Choose the Fabric Around the Stored Liquid and Operating Pattern
“Industrial tank liner” covers very different duty cycles. One formulation should not be assumed suitable for every liquid.
Six Tank-Liner Risks Worth Solving Before the Purchase Order
Procurement quality improves when the discussion starts with failure modes instead of only price per square meter.
Chemical Swelling or Hardening
Generic “chemical resistant” wording is not enough. Confirm exact media, concentration, temperature and contact duration.
Seam Peel or Incomplete Fusion
Validate welding temperature, speed, pressure, electrode design and overlap on production-equivalent material.
Puncture at Tank Defects
Rust scale, sharp concrete, bolts and fittings can damage the liner. Substrate preparation and underlay may be required.
Crease Fatigue from Cycling
Repeated fill-and-drain movement creates folding zones. Flexibility and reinforcement should match the duty cycle.
Stress Around Penetrations
Outlets, inlets, flanges and corners need reinforcement and a fabrication plan; they should not be treated as afterthoughts.
UV Exposure During Installation
If the liner is open to sunlight before filling or during service, specify the expected exposure and protective surface requirements.
From Roll Specification to Repeatable Tank Liner Production
DERFLEX can support material supply as part of the buyer’s fabrication workflow rather than treating the roll as an isolated commodity.
Define the Liquid
Identify chemistry, concentration, temperature, cleaning agents and contact duration.
Define the Tank
Provide material, height, diameter, geometry, support condition and penetrations.
Match the Fabric
Select scrim, coating mass, thickness, surface and functional formulation.
Trial the Seam
Confirm welding behavior and seam strength using representative fabrication equipment.
Control Bulk Supply
Confirm approved sample, roll marking, QC items, packing and repeat-order specification.
What to Send When Requesting a Quote
- Stored liquid / chemical name and concentration.
- Operating and cleaning temperature range.
- Tank material, height, diameter and approximate capacity.
- Fully supported, drop-in, suspended or other liner configuration.
- Required fabric weight / thickness if already specified.
- Preferred welding method and fabrication equipment.
- Outdoor UV exposure and expected installation environment.
- Required color, surface, roll width and roll length.
- Destination market and required standards / certificates.
- Estimated annual quantity, sample requirement and target delivery schedule.
Manufacturer-Direct Coated Textile Development
DERFLEX manufactures PVC coated fabric and supplies industrial roll materials for converters and OEM programs. This allows tank-liner buyers to discuss the base textile, coating, width, surface, functional additives, welding behavior, roll packing and repeat-production requirements within one sourcing process.
For a new industrial liner program, DERFLEX can review a buyer’s existing TDS, physical sample or target performance list and recommend a practical sampling path before bulk production.
Send Your SpecificationContinue Your Material Selection
Six related pages for buyers comparing coated textile structures, water-tank materials and flexible liquid-containment options.
Industrial Tank Liner Fabric FAQs
Practical answers for engineers, liner fabricators, distributors and industrial procurement teams.
What is industrial tank liner fabric?
Industrial tank liner fabric is a flexible barrier material used to isolate stored liquid from a steel, concrete, fiberglass or other tank structure. Reinforced PVC coated polyester is commonly used when the project needs fabric strength, dimensional stability and heat-weldable seams.
What GSM is suitable for an industrial tank liner?
There is no single GSM that fits every tank. Lighter grades may work for fully supported water containment, while larger tanks, more aggressive handling or higher mechanical stress may require heavier reinforced structures. Tank height, liquid density, support condition, welding design and puncture risk should be considered together.
Can PVC tank liner fabric be used for chemicals?
Potentially, but compatibility must be evaluated against the exact chemical, concentration, temperature and contact time. “Chemical resistant” should not be interpreted as universal resistance to all acids, alkalis, solvents, oils or treatment chemicals.
Can DERFLEX customize tank liner fabric for welding?
DERFLEX can develop coated fabric around common fabrication methods such as high-frequency, hot-air or hot-wedge welding. Buyers should run a seam trial with their own equipment and intended overlap design before mass production.
Does reinforced tank liner fabric reduce stretching?
The woven reinforcement helps provide tensile strength and dimensional stability compared with unsupported flexible films. Actual movement still depends on the fabric construction, tank support, temperature, hydrostatic pressure and installation geometry.
What information is needed for a chemical-resistant tank liner quote?
Send the chemical name, concentration, temperature, expected contact duration, tank dimensions, liner configuration, current material if known, welding process, required standards and estimated quantity. A physical sample or existing TDS can also help with matching.
Can tank liner fabric be supplied in custom width and color?
Yes, custom roll width, weight, thickness, color, surface treatment and packing can be discussed according to production feasibility and order quantity. Wider rolls may help reduce the number of fabricated seams.
What should be checked before installing a tank liner?
Inspect the tank for sharp edges, rust scale, exposed fasteners, rough concrete, damaged fittings and unsupported voids. Confirm the need for protective underlay, reinforcement around penetrations, seam orientation, anchoring and installation access before the liner is placed.
Build the Tank Liner Specification Around Your Real Liquid and Tank
Send DERFLEX your stored medium, tank dimensions, welding method, target fabric structure and documentation requirements. The team can review a material direction, sample route and quotation for your industrial tank liner fabric program.