Product Overview
FIBC Lining Bag Film is an engineered polyethylene tubular or flat film designed for insertion into Flexible Intermediate Bulk Containers (Big Bags). It functions as a primary protective barrier between bulk contents and the woven polypropylene (PP) outer bag, preventing moisture ingress, product contamination, gas transmission, and fine powder sifting.
Manufactured via multi-layer blown film extrusion lines in a dust-controlled environment, our films are supplied as continuous rolls for automatic conversion or as pre-fabricated form-fit and bottle-shaped liners. Engineered for automated filling and discharge lines, the film balances high puncture resistance with controlled elongation to withstand shifting loads during intermodal transit.
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Co-Extruded Barrier Structure: Available in 3-layer to 5-layer configurations combining LDPE, LLDPE, and optional EVOH or PA layers to control moisture vapor transmission rate (MVTR) and oxygen transmission rate (OTR).
Controlled Slip & Friction (COF): Formulated with tailored slip additives to ensure smooth mandrel placement and prevent film blocking during high-speed automated insertion.
High Tear & Puncture Resistance: High dart drop impact strength (> 300 g per ASTM D1709) prevents rupture from sharp crystalline edges or aggressive industrial minerals.
Anti-Static & Conductive Options: Incorporates anti-static masterbatch or conductive carbon black grids to prevent electrostatic discharge when handling combustible powders in hazardous zones.
Strict Cleanroom Extrusion: Processed in dust-controlled environments to eliminate foreign particulate contamination for food and pharmaceutical packaging applications.
Technical Specifications
|
Parameter |
Test Method |
Typical Value (Standard Duty) |
Typical Value (Heavy Duty / Barrier) |
|
Material Composition |
FTIR / DSC |
100% Virgin LDPE / LLDPE Blend |
PE / EVOH / PE Co-extruded Structure |
|
Thickness Range |
ISO 4593 |
50 um - 150 um |
80 um - 250 um |
|
Film Width (Tubular / Gusseted) |
ISO 4591 |
600 mm - 2400 mm |
800 mm - 3000 mm |
|
Tensile Strength (MD/TD) |
ASTM D882 |
>= 22 MPa / >= 20 MPa |
>= 28 MPa / >= 26 MPa |
|
Elongation at Break (MD/TD) |
ASTM D882 |
>= 600% / >= 700% |
>= 650% / >= 750% |
|
Dart Drop Impact |
ASTM D1709 |
>= 250 g (70 um) |
>= 450 g (120 um) |
|
Coefficient of Friction (COF) |
ASTM D1894 |
0.15 - 0.25 (Film to Film) |
0.15 - 0.25 (Film to Film) |
|
Regulatory Compliance |
FDA / EC |
FDA 21 CFR 177.1520, EU 10/2011 |
FDA 21 CFR 177.1520, EU 10/2011 |
Applications
Chemical Industry
Packaging for high-purity resins, masterbatches, titanium dioxide, rubber additives, and moisture-sensitive catalysts requiring low MVTR.
Food & Agriculture
Bulk handling of refined sugar, flour, starch, milk powder, coffee beans, and edible oils requiring food-contact certification and odor barrier properties.
Minerals & Mining
Transporting fine-ground calcium carbonate, silica sand, graphite, and metal powders where sifting prevention is critical.
Pharmaceuticals
Raw active pharmaceutical ingredients (APIs) and excipients requiring cleanroom manufacturing standards and traceable resin batches.
We configure extrusion parameters, roll dimensions, and conversion configurations to match specific filling equipment and containment requirements.
Dimensional Customization: Layflat widths from 600 mm to 3000 mm, side gussets up to 800 mm, and custom film thickness tolerances within +/- 5%.
Conversion Formats: Supplied as continuous rolls with perforation, center-folded sheeting, or pre-converted liners (bottle-shaped, form-fit, pin-punched, or glued/tied to the outer FIBC body).
Color & Additives: Natural transparent, pigmented opaque (UV-stabilized black/white), anti-block, slip-modified, or ESD/conductive formulations.
Core & Packaging: 3-inch or 6-inch heavy-duty paper or plastic cores, suspended horizontal roll packaging, or palletized shrink-wrapped bundles for automated decoiling.
Quality Control & Testing
Consistent gauge control and mechanical integrity are verified across every extrusion batch in our in-house laboratory.
Online Gauge Profiling: Automated radioactive and infrared scanning systems monitor cross-web thickness profiles in real time to eliminate thin spots.
Mechanical Testing: Routine verification of tensile strength, elongation, and tear resistance using universal testing machines per ASTM standards.
Impact & Seal Testing: Dart drop impact testing and peel strength analysis for heat-sealed bottom spouts and liner seams.
Migration Testing: Third-party certified overall and specific migration testing conducted periodically for food-contact compliance validation.
Traceability: Each master roll carries a lot number label linked to raw material resin certificates, extrusion line operator logs, and QC test reports.
Visual Suggestion: Display thumbnails of actual lab testing equipment—such as the Dart Drop Impact Tester and Universal Tensile Testing Machine—alongside third-party compliance badges (FDA/SGS).
Packaging & Shipping
Roll Protection
Rolls are wrapped in moisture-barrier PE film, capped with protective edge boards, and secured on fumigation-free wooden or plastic pallets.
Container Loading
Optimized pallet stacking configurations for 20GP and 40HQ containers to maximize volume utilization and prevent transit shifting.
Documentation
Complete shipping documentation provided, including Certificate of Analysis (COA), FDA/EU food contact declarations, packing lists, and bill of lading.
RFQ
To receive an accurate technical proposal and quotation, please provide the following parameters:
Application: (E.g., Food-grade sugar, hazardous chemical powder, general mineral)
Film Structure & Type: (E.g., Monolayer LDPE, 3-layer co-extruded, anti-static, flat tubing, or pre-converted form-fit liner)
Dimensions: Layflat Width (mm), Gusset Width (mm), Thickness (um or mil), and Length per roll or bag.
Estimated Order Volume: (Quantity per shipment / Annual volume)
Destination Port / Delivery Terms: (FOB, CIF, or DDP)
With abundant experience, we are one of the most reliable fibc lining bag film manufacturers and suppliers in China. Welcome to wholesale advanced fibc lining bag film made in China here from our factory. If you have any enquiry about cooperation, please feel free to email us.
FIBC Dustproof Liner Film, FIBC Liner Packaging Film, FIBC PE Liner Film
