📦 FIBC Products
Liner (Inner Lining)
Big bag liners made from LDPE, MDPE, HDPE, EVOH, PA, conductive, and aluminum materials provide moisture barrier, gas impermeability, and product protection for food, pharmaceutical, and chemical industries.
Technical Specifications
Liner (Inner Lining) Specs
Material Types
LDPE, MDPE, HDPE, EVOH, PA
Special Types
Conductive, Aluminum
Thickness
50 - 200 micron
Transparency
Clear or opaque
Gas Barrier
EVOH layered
Moisture Barrier
HDPE or aluminum
Form
Tubular, form-fit, tabbed
Production
Coextrusion technology
Liner (Inner Lining): Product Protection and Isolation
Big bag liner is a plastic film lining placed inside the FIBC.
Protects stored products from moisture, air, light, and contamination.
Essential for applications requiring food safety, pharmaceutical purity, and chemical stability.
Liner Material Types
LDPE (Low-Density Polyethylene)
Economical and flexible general-purpose liner.
- Basic moisture barrier
- Easy to form
- Cost-effective
HDPE (High-Density Polyethylene)
Superior moisture barrier properties.
- Ideal for hygroscopic (moisture-absorbing) products
- High strength
- Chemical resistance
EVOH (Ethylene Vinyl Alcohol)
Excellent oxygen and aroma barrier.
- Critical for food freshness
- Ensures pharmaceutical stability
- Coextrusion layer
PA (Nylon)
High mechanical strength and puncture resistance.
- Suitable for sharp-edged granules
- For crystal forms
- High strength
Aluminum Foil
Complete light, moisture, and gas isolation.
- For light-sensitive pharmaceutical materials
- Products requiring extended shelf life
- Maximum barrier
Conductive Liner
Carbon-filled antistatic liner.
- Use with Type C conductive big bags
- Static electricity control
- For explosive atmospheres
Coextrusion Advantage
Coextrusion technology combines different polymer layers into a single film.
Common Combinations
| Layer Structure | Property | Application |
|---|---|---|
| LDPE/EVOH/LDPE | Economical oxygen barrier | Food raw materials |
| PA/PE | Mechanical strength + easy sealing | Sharp products |
| HDPE/ALU/PE | Maximum barrier | Sensitive pharmaceuticals |
Each layer provides a different protection function.
Achieves multiple protection properties that single material cannot provide.
Form Options
| Form | Feature | Application |
|---|---|---|
| Tubular | Flat tube shape | Manual filling |
| Form-Fit | Custom to big bag shape | Automation |
| Tabbed | Fixing tabs | Non-slip mounting |
| Conical | Bottom tapering | Complete discharge |
Customization Options
Configure to Your Needs
LDPE Liner
Standard economical liner, general purpose use
HDPE Liner
High moisture barrier, for hygroscopic products
EVOH Liner
Oxygen barrier, aroma preservation (food/pharma)
PA (Nylon) Liner
Mechanical strength, puncture resistance
Aluminum Foil
Complete light and gas barrier, sensitive products
Conductive Liner
Antistatic properties, for Type C big bags
Conical Liner
Conical form for complete discharge
Product Gallery
Liner (Inner Lining)
Application Areas
Where is Liner (Inner Lining) Used?
Frequently Asked Questions
About Liner (Inner Lining)
A big bag liner is a plastic film lining placed inside the FIBC. It isolates the product from the external environment, prevents moisture and gas transmission, and prevents leakage. Critical for product integrity and hygiene in food, pharmaceutical, and chemical industries.
Material selection depends on product characteristics: LDPE for economical general purpose, HDPE for moisture barrier, EVOH for oxygen/aroma barrier, PA for mechanical strength, aluminum for complete protection. HDPE for hygroscopic products, EVOH for food aromas, aluminum liner for sensitive pharmaceutical materials.
Coextrusion is the technique of combining different plastic layers into a single film. For example, LDPE/EVOH/LDPE three-layer liner provides both economy (LDPE) and oxygen barrier (EVOH). This achieves multiple protection properties that a single material cannot provide.
Liner can be mounted in three ways: 1) Loose liner - placed inside the big bag, 2) Form-fit liner - custom sewn to big bag shape, 3) Tabbed/glued liner - fixed to the big bag. Mount type depends on usage scenario and automation.
Yes, UN 13H4 code refers to liner-integrated big bags. In this case, the liner must be fixed to the big bag and pass UN tests together. UN lined big bags are mandatory for hazardous materials requiring liquid impermeability.
Related Products
Standard Big Bag (FIBC)
Woven polypropylene (PP) standard FIBC bulk bags with load capacities from 500 kg to 2000 kg provide safe bulk material handling across food, agriculture, chemical, and construction sectors.
Valve Big Bag
FIBC bulk bags with special valve (spout) systems at filling and discharge openings provide operational efficiency in automatic filling lines and applications requiring controlled discharge.
Q-Bag (Baffled Big Bag)
Q-bags with internal baffle system maintain cubic form, occupy 25% less storage space than standard FIBCs, and provide better stability on forklifts.
Phone
+90 216 479 94 78E-posta
info@karacabigbag.comAddress
Cengeldere 107, 34830
Istanbul, Türkiye