U Panel FIBC Bag with Liner Supplier India | India Pack
U Panel Bag with Liner — Sourced From Audited Indian Factories
Two-panel construction that keeps side seams to a minimum, combined with an independent PE or woven liner that protects moisture-sensitive and contamination-sensitive contents.
Overview
The U Panel Bag with Liner is an FIBC sewn from two U-shaped fabric panels — body and base formed as a single piece on each panel — with an internal liner fitted inside the outer woven shell before filling. Also specified as a U-panel FIBC with liner or two-panel bag with liner, the design is used across food ingredients, agriculture, bulk chemicals, and pharmaceutical raw materials. The reduced side-seam count of U-panel construction matters where seam integrity under sustained dynamic load is a procurement specification — fewer seam lines means fewer potential failure points compared to a standard four-panel bag at the same SWL. The liner provides a second, independent barrier: it physically separates the contents from the PP weave and from ambient moisture, without relying on coating of the outer fabric.
Procurement managers evaluating this bag typically audit two specification areas where errors are costly. First, liner compatibility: the liner material — PE film, food-grade PE, woven PP inner liner, or a specialist moisture-barrier film — must be chemically compatible with the specific fill material. Incompatible liner material can contaminate the product or degrade under contact; this is confirmed between buyer, India Pack, and the supplying factory before production, not assumed. Second, liner integration at discharge: a loose-insert liner tied at the top behaves differently at unloading than a form-fit liner with a discharge pass-through — specifying the unloading process determines which arrangement is correct. Buyers sourcing food ingredients additionally need to confirm whether the supplying factory holds ISO 22000 or equivalent, since the food-grade liner claim attaches to the factory's certification, not to the liner specification alone.
India Pack acts as a buyer's level-one procurement office in India, sourcing from 10+ audited FIBC manufacturers, running specification verification against the buyer's brief, and handling export documentation. Over ten years and 25M+ bags supplied, the process is structured to close the gap between a buyer's spec sheet and what arrives in container. India Pack sources; it does not manufacture. Its margin is inside an all-inclusive, benchmarkable price, with no separate procurement fee to the buyer.
Which FIBC Type Do You Need?
Liner-fitted FIBCs address moisture barrier and contamination isolation. The table below maps common requirements to the correct variant.
| Your requirement | Recommended |
|---|---|
| U-panel body, independent liner, moisture or contamination barrier required | U Panel Bag with Liner (this page) |
| Open-top fill with discharge spout; liner for hygroscopic contents | Open Top Discharge Spout Bag (with liner option) |
| Full spout top and discharge spout; liner for food or chemical powders | Spout Top Discharge Spout Bag (with liner option) |
| Electrostatic dissipation required alongside contamination barrier | Type C Bag with Label |
| Standard FIBC, no liner required, no seam-count preference | Builders Bag |
| UN-certified hazardous goods requiring a lined, spout-discharge container | UN Bag with Spout |
Standard Variants
PE Film Liner — Open Top
U-panel body with a PE film loose-insert or form-fit liner, open top closure. Liner is tied at the neck after filling; outer top closed by tie cord or drawstring.
Best for: Hygroscopic powders, fertiliser grades, mineral compounds requiring moisture exclusion but not direct food-grade contact certification.
Key spec: SWL [FILL]; liner film micron [FILL]; body fabric GSM [FILL]
Food-Grade PE Liner — Spout Top / Spout Discharge
U-panel body with a food-grade PE liner, spout top fill, and spout discharge bottom. Liner sealed to both spouts for full product isolation.
Best for: Food ingredients, starch, sugar, grain, seed — applications where both the liner material and the supplying factory's food certification are specified. [VERIFY per factory]
Key spec: SWL [FILL]; liner micron [FILL]; body fabric GSM [FILL]
Woven PP Inner Liner
Secondary woven polypropylene liner sewn inside the outer U-panel body. Provides a fabric-on-fabric barrier that can carry its own print or labelling; lighter moisture protection than PE film but superior abrasion resistance at the liner surface.
Best for: Agricultural seeds and granular chemicals where product contact with the primary weave must be prevented but PE film barrier is not required.
Key spec: SWL [FILL]; inner liner GSM [FILL]; outer body GSM [FILL]
Moisture-Barrier Liner — Skirt Top
U-panel body with a specialist moisture-barrier film liner (typically laminated or multi-layer PE) and a skirt top for dust containment at fill. For contents where standard PE film micron is insufficient for the filling-environment humidity or the product's hygroscopic sensitivity.
Best for: High-hygroscopic-sensitivity chemicals, pharmaceutical excipients, fine powders filled in high-humidity environments. [VERIFY per factory]
Key spec: SWL [FILL]; liner specification [FILL — confirm film grade with factory]; body GSM [FILL]
Technical Specifications
| Parameter | Specification |
|---|---|
| Safe Working Load (SWL) | [FILL] |
| Safety Factor | [FILL] |
| Body fabric | Virgin PP woven |
| Body fabric GSM | [FILL] |
| Dimensions (L × W × H) | Custom to order |
| Bottom type | Flat base (standard) or discharge spout (on request) |
| Top closure | Open top, spout top, or skirt top — customer-specified |
| Construction | U-panel (two-panel body) |
| Lift loops | Four-loop standard |
| Loop length | [FILL] |
| Liner type | PE film liner, food-grade PE liner, woven PP inner liner, or moisture-barrier liner — customer-specified |
| Liner micron / weight | [FILL — confirm with factory per liner type] |
| Liner attachment | Loose-insert, form-fit, or spout-sealed — customer-specified [VERIFY per factory] |
| Coating | Uncoated standard; coated available on request |
| Printing | Up to 4-colour flexo print [VERIFY per factory] |
| Fabric colour | Natural (undyed) standard; custom on request |
| Relevant standard | ISO 21898 (held at factory level) [VERIFY per factory]; ISO 22000 / food-grade liner [VERIFY per factory — food configurations only] |
Industries and Applications
Food and Food Ingredients
What's packed: Starch, sugar, flour, dried food powders, grain, seed.
Why this bag: Food-grade PE liner prevents the product from contacting the PP weave and provides a sealed hygiene barrier. U-panel construction avoids the additional seam lines of a four-panel body — a factor some food auditors note in production-hygiene assessments. Suppliers with ISO 22000 or equivalent food certification are available in the India Pack network [VERIFY per factory].
Agriculture
What's packed: Seeds, grain, agricultural powders, plant-nutrition granules.
Why this bag: Seed lots and grain destined for controlled-atmosphere storage need moisture exclusion from the moment the bag is sealed. A U-panel body with a tied PE liner provides this from fill through to delivery. Woven inner liner is specified where seed lot separation from the outer weave matters for traceability or contamination-prevention protocols.
Bulk Chemicals
What's packed: Hygroscopic inorganic compounds, polymer powder, chemical granules.
Why this bag: Many industrial chemicals absorb moisture and clump or degrade in transit. A PE or moisture-barrier liner arrests this without requiring coated outer fabric. Liner chemical compatibility with the specific compound is the critical pre-order check — confirmed between the buyer, India Pack, and the factory before production begins. For electrostatic-dissipative requirements, the Type C configuration should be evaluated separately: see Type C Bag with Label.
Pharmaceuticals and Excipients
What's packed: Pharmaceutical excipients, active ingredient intermediates, fine chemical powders.
Why this bag: Pharmaceutical supply chains often specify both a moisture-barrier liner and a cleanroom-compatible filling environment. The U-panel body provides a structurally cleaner internal seam profile. Factories with the relevant pharmaceutical-grade or GMP-equivalent certification should be confirmed before ordering [VERIFY per factory].
Customisation Options
Structural
- U-panel (two-panel) body — standard for this configuration
- Four-loop lift configuration (standard); loop length custom to order
- Flat base or discharge spout discharge
- Open top, spout top, or skirt top fill closure
- Dimensions (L × W × H) custom to order
Functional
- PE film liner: loose-insert or form-fit; micron to be confirmed with factory [FILL]
- Food-grade PE liner for food-contact applications [VERIFY per factory]
- Woven PP inner liner for fabric-on-fabric barrier
- Moisture-barrier liner (laminated or multi-layer film) for high-hygroscopic-sensitivity contents [VERIFY per factory]
- Liner spout integration for spout-top or spout-discharge configurations [VERIFY per factory]
- Liner tie cord or heat-seal closure at neck
- Coated outer fabric for additional weather resistance during outdoor transit
Compliance
- ISO 21898 compliance — held at factory level; not an India Pack certification [VERIFY per factory]
- ISO 22000 / food-grade production — held at factory level; not an India Pack certification [VERIFY per factory — food configurations only]
- Pharmaceutical-grade or GMP-equivalent production environment [VERIFY per factory]
- For electrostatic-dissipative requirements, see Type C Bag with Label
Branding
- Up to 4-colour flexo print on body panels [VERIFY per factory]
- Pantone colour matching available on request [VERIFY per factory]
- Natural (undyed) fabric standard; coloured fabric available
- Print on inner woven liner available on some configurations [VERIFY per factory]
Tell Us What You're Packing
Send us your SWL, bag dimensions, liner type, product name, and approximate annual volume — we'll come back with sourced pricing from our audited factory network.
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