Specifications of Type B Bulk FIBC Bags
| Material | 100% Virgin Polypropylene — Low Breakdown Voltage |
| Breakdown Voltage | Less than 6 kV (prevents propagating brush discharges per IEC 61340-4-4) |
| Construction Types | U-Panel, Circular, 4-Panel, Baffle, Net Baffle |
| Safety Factor | Up to 8:1 (Standard 5:1 available) |
| Safe Working Load | 500 kg – 2,000 kg (Up to 5,000 lbs) |
| Liner Options | PE Liner / Up to 7-Layer Coextruded Barrier Film |
| Fabric Weight (GSM) | 90 GSM – 200 GSM (Custom GSM available) |
| Product Length | 12" – 56" (30 cm – 142 cm) |
| Product Width | 12" – 56" (30 cm – 142 cm) |
| Product Height | 12" – 56" (30 cm – 142 cm) |
| Compliance Standard | ISO 21898 / IEC 61340-4-4 |
| Electrostatic Type | Type B — Prevents propagating brush discharges |
| MIE Suitability | Flammable powders with MIE > 3 mJ only |
| Atmosphere Suitability | Non-flammable vapor/gas atmospheres only |
What Are Type B FIBC Bulk Bags?
Customized Type B FIBC Bulk Bags — Tailored to Your Exact Requirements
Type B FIBC Bulk Bag Construction Types — All Designs Available
- 4-Panel Design (4-Panel Type B FIBC Bags) – Four separate polypropylene fabric panels are precision-cut and stitched together to form the bag body, with a separate woven base panel completing the construction. The 4-panel design creates a structurally rigid, dimensionally consistent bag with clean, straight seams — ideal for applications where accurate dimensional tolerances are required for automated filling equipment or container loading optimization. Suitable for chemical powders, pharmaceutical ingredients, and fine industrial minerals handled in non-flammable vapor environments.
- U-Panel Design (U-Panel Type B FIBC Bags) – A single large U-shaped fabric panel forms two sides and the base of the bag in one continuous piece, eliminating the base-to-body seam that is present in 4-panel designs. Two additional side panels are stitched in to complete the rectangular body. The U-panel construction minimizes the number of critical seams, distributes load stresses more evenly across the bag structure, and maintains a consistent rectangular shape during filling — making it the preferred construction for Type B bags used in heavy-duty chemical and powder handling applications.
- Circular Design (Circular Type B FIBC Bags) – The bag body is woven as a seamless continuous tube — eliminating all vertical body seams — with separate woven panels stitched at the top and bottom to complete the bag. The seamless circular weave provides uniform circumferential strength distribution, making circular Type B FIBC bags exceptionally strong for their fabric weight and cost-efficient to produce in large quantities. Ideal for Type B applications involving fine powders and granular materials where consistent fill shape and competitive unit pricing are priorities.
- Baffle Design (Baffle Type B FIBC Bags) – Internal baffle panels are stitched into the four corner positions of the bag, creating an internal structure that maintains the bag’s square, rectangular shape during filling, storage, and transportation — even when partially filled. Baffle construction prevents the bag from bulging outward at the sides, which maximizes pallet and container utilization efficiency. Type B Baffle FIBC bags are ideal for fine flammable powders that require controlled, stable stacking across a supply chain with multiple handling points.
- Net Baffle Design (Net Baffle Type B FIBC Bags) – A variation of the standard baffle design where the internal corner baffles are constructed from open mesh or net polypropylene fabric rather than solid woven material. Net baffles maintain the bag’s square shape during handling while allowing air circulation through the bag walls — a critical feature for applications involving materials that require ventilation to prevent heat buildup, condensation, or anaerobic decomposition. Net Baffle Type B bags are suitable for specific powder and granular materials where both shape retention and airflow are required simultaneously.
- 30% Extra Capacity Design (High-Volume Type B FIBC Bags) – An engineered evolution of the standard baffle bag design that increases the internal bag volume by up to 30% without increasing the external base footprint. By optimizing the internal baffle geometry, this construction allows significantly more material to be filled per bag — directly reducing the number of bags, filling cycles, pallets, and container positions required per shipment. This delivers measurable cost savings in packaging, handling, and logistics for high-volume Type B FIBC applications in chemical processing and pharmaceutical manufacturing.
Loop Construction Options — Type B FIBC Bulk Bags
- Corner Loop – Lifting loops are individually stitched into each of the four corner seams of the bag structure, providing the most widely used and mechanically proven lift point configuration for industrial FIBC bags. Corner loops distribute the suspended load evenly across all four structural seams, offering excellent stability during crane lifting and forklift handling. Standard corner loops are compatible with all forklift tine widths and crane hook specifications used in Indian and international industrial facilities.
- Cross Corner Loop – Each cross-corner loop is stitched diagonally across one corner of the bag body, positioning the loop attachment point across the corner seam rather than along it. When the bag is lifted, the cross-corner geometry keeps the bag body square and prevents the top opening from closing inward — maintaining full access to the fill spout or open top during suspended filling operations. This configuration is particularly valuable for Type B FIBC bags used in automated filling lines where the fill opening must remain fully open while the bag is suspended under the fill chute.
- Double Stevedore Loop – Two horizontal polypropylene webbing straps are threaded through all four corner lifting loops, creating two parallel horizontal handles that span the full width of the bag top. The double stevedore configuration allows forklift tines to approach the bag from either the length or width direction — providing maximum operational flexibility in warehouse and loading dock environments where forklift approach direction may be restricted. Widely specified for Type B bulk bags used in chemical distribution and industrial warehousing.
- Single Stevedore Loop – A single continuous polypropylene webbing strap is threaded through all four lifting loops, creating one horizontal handle that encircles the entire top perimeter of the bag. The single stevedore design allows the bag to be lifted safely from any position around its perimeter without requiring the forklift operator to reposition — reducing handling time and improving throughput at high-volume filling and dispatch operations.
- Sleeve Lift Loop – Lifting sleeves are manufactured from the same woven polypropylene fabric as the bag body, rather than from webbing tape. The sleeve loop provides a wider, more distributed contact area for forklift tines, reducing point stress on the bag fabric during repeated lifting cycles. Sleeve lift loops are specifically engineered for Type B FIBC bags that will be subjected to frequent, repeated handling — such as reusable Type B bags in closed-loop chemical or pharmaceutical powder supply chains.
Top Construction Options — Type B FIBC Bulk Bags
- Open Top – The open top is the standard and most widely used top configuration for Type B FIBC bags. The entire top of the bag is open — there is no fill spout, closure mechanism, or top panel pre-stitched. The bag is filled directly through the open top via chute, belt conveyor, or pneumatic fill system, and the top fabric is gathered and tied or strapped closed after filling. Open top Type B FIBC bags are ideal for high-speed bulk filling operations where filling rate is the primary priority and dust emissions during filling are controlled by dedicated filling equipment.
- Baffle Top (Flap Top) – A lightweight fabric flap panel is stitched around the perimeter of the bag’s top opening and folds down after filling to cover and protect the bag contents. The baffle top provides basic dust and contamination protection without requiring tying or additional closure hardware. It is a cost-effective top configuration for Type B bags used in applications where a full spout seal is not required but basic top coverage is needed during storage and transit.
- Spout Top – A cylindrical polypropylene fabric spout is stitched onto the center of the top panel, providing a controlled, directional filling point for dry flammable powders. The spout connects directly to the fill chute or pneumatic filling nozzle, creating a contained fill path that minimizes airborne dust generation — a critical safety benefit when handling flammable powder materials in Type B FIBC bags. After filling, the spout is tied closed to provide a secure, hygienic seal. Spout top Type B bags are the most commonly specified top configuration for pharmaceutical powder and chemical powder applications.
- Spout Top with Flap – The spout top with flap configuration adds a protective fabric flap cover over the tied fill spout, providing a secondary closure layer that shields the tied spout from external contamination, accidental opening during transit, and tampering. This dual-closure design is specified for Type B FIBC bags carrying high-value pharmaceutical powders, regulated chemical ingredients, and export shipments where fill integrity must be maintained and evidenced throughout the logistics chain.
- Conical Spout Top (High-Fill Cone) – A conical funnel-shaped filling cone is integrated at the base of the fill spout, creating a guide that directs bulk powder flow smoothly and efficiently into the bag fill spout during high-speed automated filling. The conical geometry reduces the risk of powder bridging at the fill spout entry — a common issue with fine flammable powders — and minimizes dust generation and product loss during filling. Specified for Type B FIBC bags used in fully automated chemical and pharmaceutical powder packaging lines.
Need a Trusted Type B FIBC Bulk Bags Manufacturer in India? Get a Free Quote
Palmetto Bags has been manufacturing and exporting Type B FIBC bulk bags since 1994 — ISO certified, fully customizable, 500 kg to 2,000 kg SWL, shipped to 30+ countries.
Bottom Construction Options — Type B FIBC Bulk Bags
- Plain Bottom (Flat Bottom) – A flat, plain-woven polypropylene base panel with no discharge mechanism. Contents are discharged by cutting through the bag base or by tipping the bag. The plain bottom is the most economical bottom configuration and is suitable for Type B FIBC applications where the bag is emptied in a single operation at the point of use — such as delivery of flammable powder materials to a mixing vessel, where the entire bag contents are added in one step.
- Discharge Spout – A tubular polypropylene fabric spout is stitched into the center of the bag base, providing controlled, directional discharge of the bag’s dry powder contents by untying and opening the spout. The discharge spout is the most commonly specified bottom configuration for Type B FIBC bulk bags, offering clean material flow, minimal product residue, and easy connection to pneumatic conveying lines, mixers, and hoppers used in pharmaceutical and chemical processing facilities.
- Conical Discharge Spout – The conical discharge spout features a tapered, funnel-shaped bottom construction that narrows progressively toward the discharge spout outlet, promoting smooth, complete, gravity-assisted discharge of fine powder contents with minimal residual material remaining in the bag. The conical taper is particularly effective for preventing powder bridging and hang-up at the discharge point — a common problem with cohesive or electrostatically charged fine powders handled in Type B FIBC bag environments. Preferred by pharmaceutical manufacturers, specialty chemical producers, and food ingredient processors.
- Discharge Spout with Flap (Spout with Security Flap) – A standard tubular discharge spout with an additional security flap — a fabric panel that folds over and ties or velcros shut over the closed discharge spout. The security flap provides a secondary closure that prevents accidental discharge spout opening during transport and storage, provides tamper evidence for regulated or high-value materials, and protects the discharge spout from external contamination during handling. Specified for Type B FIBC bags containing pharmaceutical active ingredients, regulated chemical intermediates, and materials requiring documented chain-of-custody integrity.
- Duffle Bottom – A fabric panel with a central discharge opening and a sewn-in gathering ring that allows the entire bottom panel to be opened rapidly for fast, gravity-assisted complete discharge. The duffle bottom configuration is designed for maximum discharge speed and efficiency — the bag contents empty rapidly and completely without the flow restriction of a discharge spout. Suitable for Type B FIBC applications in high-throughput chemical blending and processing facilities where rapid bag discharge is a key operational requirement.
FIBC Bag Type Selection Chart — Is Type B the Right Choice for You?
| Minimum Ignition Energy (MIE) of Dust | NonFlammable Atmosphere | Explosive Dust Atmosphere | Explosive Gas and Vapor Atmosphere |
| MIE > 1000 mJ | A, B, C, D | B, C, D | C, D |
| 1000 mJ > MIE 3 mj | B, C, D | B, C, D | C, D |
| MIE < 3 mJ | C, D | B, C, D | C, D |
Why Choose Palmetto Bags as Your Type B FIBC Bulk Bags Supplier in India?
30+ Years of Specialized FIBC Manufacturing Experience Body
Palmetto Industries (India) Pvt. Ltd. has been manufacturing Type B FIBC bulk bags and the full range of FIBC classifications since 1994 — over 30 years of continuous production experience. Our deep technical understanding of electrostatic safety requirements, fabric specification, and international FIBC standards means you receive not just a bag, but a verified, safety-compliant packaging solution for your flammable powder handling requirements.
Fabric Breakdown Voltage Tested — Every Batch Body
Compliance with Type B FIBC standards requires that the bag fabric maintains a breakdown voltage below 6 kV. Palmetto Bags conducts mandatory breakdown voltage testing on every production batch of Type B FIBC bags, maintaining complete test records for each order. Certificates of conformity and fabric test reports are available for all Type B bag orders on request — giving your procurement, HSE, and compliance teams documented evidence of standard compliance.
ISO 22000 & HACCP Certified Manufacturer Body
Palmetto Bags holds ISO 22000:2018 and HACCP certifications covering our full FIBC production operation. Our Type B FIBC bags are manufactured under rigorous quality management systems that include incoming raw material inspection, in-process quality checks at every production stage, finished goods inspection, and pre-dispatch SWL testing. Every bag is traceable from raw material batch to finished product dispatch — a documentation standard required by pharmaceutical, chemical, and food ingredient buyers globally.
Fully Customized Type B Bags — Engineer-to-Order Body
No two Type B FIBC bag applications are identical. Palmetto Bags' experienced packaging engineers work directly with your procurement and HSE teams to specify the exact bag construction, dimensions, SWL, liner type, and configuration that matches your material's bulk density, flow characteristics, MIE value, filling equipment, and unloading process. We design Type B bags around your operation — not the other way around.
Manufacturer-Direct Pricing — No Trading Markup Body
As a vertically integrated Type B bulk bags manufacturer in India, Palmetto Bags controls the entire production chain from polypropylene yarn procurement to finished bag dispatch. We supply directly to end users, removing distributor and trading company margins from the cost chain. This manufacturer-direct pricing model consistently delivers 15–25% cost savings compared to sourcing Type B FIBC bags through intermediaries — without any compromise on quality, testing, or delivery performance.
Reliable Export to 30+ Countries — One Star Export House Body
Palmetto Bags is a recognized One Star Export House by India's DGFT, with established logistics partnerships for reliable container-load delivery to the USA, UK, UAE, Germany, Netherlands, Australia, and 25+ other countries. We manage all export documentation, FIBC compliance certification, and freight coordination — providing international buyers with a seamless, fully managed procurement experience from India's leading Type B industrial bulk bags supplier.
