We offer a full suite of FIBC liner solutions for liquid and dry products. Our custom form fit and flat tube liners are manufactured using various film types including EVOH, Foil, HDPE, LDPE, and PP. Liner thicknesses range from 1.0 – 8.0 mil.
Liners can be factory inserted into your FIBC or purchased separately. They can be loosely inserted, attached at 8 points using tabs, or glued into the body of the bag. In addition, the liner openings can be cuffed and sewn to the filling and discharge spouts of your bag.
FIBC liners are available in 3 basic constructions: Form Fit, Lay Flat, and Baffled. Each construction provides enhanced protection against leakage, contamination, and moisture intrusion.
Form fit liners take the exact form of the body of the FIBC including the filling and discharge spouts. This ensures efficient filling and discharging of the FIBC. In addition, liner filling and discharge spouts can be tailor-made to the exact size specifications of the customer.
A lay flat tube is a common, cost-effective style of FIBC liner. The liner has no spouts or contours. Generally, the liner is open on one end and heat sealed on the other. Lay flat liners can be inserted and attached into a bulk bag in the same manner as a form fit liner.
Prior to filling the bag, it is recommended that the liner is pre-filled with air to remove possible twists or wrinkles in the liner.
Oftentimes a standard baffled FIBC is insufficient for ultra-clean applications. When the functionality of a baffled bag and film liner is required, a baffled liner is appropriate.
Baffled liners allow a standard bulk bag to maintain a square shape. The liner is form fitted to the bag and utilizes internal baffles to prevent bulging that could result in a rounded footprint. The square shape promotes greater bag stability and stackability. Furthermore, the square shape greatly improves storage capacity.
Aluminum Foil, High-Barrier, Anti-Static, Conductive, and Food Grade liners offer superior protection for highly sensitive products. We offer these unique custom liner solutions for customers requiring the highest degree of product security.
Foil liners, made of aluminum-laminated films, offer superior protection against oxygen, moisture, and UV light. In addition, they greatly reduce or eliminate product odor. Foil liners are form fit to the FIBC enhancing filling, discharging, and handling of the bag.
For dry flowable products where oxygen, moisture, or contamination exposure isn’t an acceptable risk, our high-barrier liners are built with foil and EVOH films that completely block gas and moisture transmission during storage and transit. High-barrier construction is available across form fit, lay flat, and baffled liner styles, so barrier performance doesn’t come at the cost of fill, discharge, or stacking efficiency.
Anti-Static and conductive liners are specially formulated with film additives that dissipate static charges away from potentially flammable products and environments. In addition, they can eliminate dry chemical static cling.
| Liner Type | Anti-Stat Properties | Surface Resistivity | FIBC Type |
|---|---|---|---|
| L1 | Conductive | ≤ 107 Ω | C |
| L2 | Anti-Static | 109 Ω to 1012 Ω | B, C & D |
| L3 | Resistive with low breakdown voltage (<4kV) | greater than 1012 Ω | B |
Polyethylene and polypropylene are approved by the FDA for food contact. Our food and pharmaceutical grade liners are produced in BRCGS and AIB certified clean rooms that adhere to the highest quality and hygiene standards.
Standards which are present in our manufacturers’ BRCGS and AIB certified clean rooms:
An FIBC liner is a protective inner layer placed inside a bulk bag to prevent contamination, leakage, and moisture intrusion. Liners are commonly used for sensitive or fine dry products and liquids.
Southern Packaging offers form fit, lay flat, and baffled liners. Each is engineered for different applications—form fit liners match the bag shape, lay flat liners are cost-effective tubes, and baffled liners provide enhanced stackability and stability.
Yes. Our polyethylene and polypropylene liners are FDA GRAS approved for food contact. Food-grade and pharma-grade liners are manufactured in BRCGS and AIB-certified clean rooms for maximum hygiene.
Yes. Liners can be loosely inserted or secured using sewn-in tabs, glue, or sewn cuffed spouts. Attachment type depends on your application, fill method, and discharge needs.
These liners are used to safely package flammable powders or materials prone to static build-up. They help dissipate static electricity and comply with Type B, C, or D FIBC requirements.
Both provide a high level of oxygen and moisture protection. Foil liners form a fully impermeable barrier and also block light and odor transfer. EVOH liners offer strong oxygen barrier performance with more flexibility and puncture resistance than foil, making them a good fit for applications where film durability during handling is a priority.
High-barrier liners are recommended for dry flowable products that degrade from exposure to oxygen or moisture - such as moisture-reactive chemical materials or oxygen-sensitive powders - where standard PE or PP liners don’t provide sufficient protection.
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