Duffle Top Bulk Bags

Duffle top bulk bags stand out as the most adaptable packaging solution for high-volume filling operations.

Overview

Material: 100% Virgin PP

Printing: 1 to 4 sides

Features: Breathable, Waterproof, Sift-proof

SWL: 1000kg – 2000kg (2000lbs -4400lbs)

Certificates: ISO 9001: 2015

Labels: EPP Vietnam’s label or customer’s label

Color

Size

80x80x100cm

100x100x120cm

Customer's request

1000 Pieces ( Min Order )

Description

Duffle top bulk bags stand out as the most adaptable packaging solution for high-volume filling operations. Engineered with a lightweight, wide-mouth fabric skirt sewn around the upper perimeter, these Flexible Intermediate Bulk Containers (FIBCs) bridge the gap between open-top dumping and narrow spout-top filling systems.

As a leading exporter of industrial packaging, EPP Vietnam supplies heavy-duty duffle top bulk bags engineered to strict Safe Working Loads (500kg – 2000kg), precise dimensional requirements, and tailored discharge configurations for processing plants worldwide.

1. What is a Duffle Top Bulk Bag?

To answer the core industry question—what is a duffle top bulk bag?—it is a heavy-duty industrial bulk container equipped with an extended fabric skirt (18″ to 30″ inches tall) sewn around the top seam of the main body. Often referred to as a skirt top jumbo bag this design opens to the full width and depth of the bag’s body.

During loading, the top filling skirt big bags flap folds outward, providing an unobstructed target for overhead chutes, conveyor belts, front loaders, or manual hoppers. Once full, operators draw the integrated tie-cord or web strap tight to cinch the skirt closed, sealing the payload against dust, rain, and environmental debris.

2. Technical Specifications of Duffle Top Bulk Bags

Selecting the optimal duffle top jumbo bag requires matching skirt lengths, fabric weights, base designs, and lifting configurations to your plant’s filling lines:

Technical Parameter	EPP Vietnam Manufacturing Standards	Operational Relevance
Main Body Fabric Weight	140 GSM to 220 GSM (Coated / Laminated or Uncoated PP)	Defines bursting strength, tear resistance, and overall payload stability.
Skirt Fabric Weight	70 GSM to 100 GSM (Lightweight, flexible woven PP or HDPE)	Allows easy gathering and cinching without adding unnecessary tare weight.
Skirt Height / Length	80-100cm (Custom options available)	Ensures complete fabric coverage across the full width when gathered and tied.
Base Configurations	Duffle top flat bottom or Discharge Spout Bottom	Choose a flat bottom big bag for single-trip use, or a discharge spout for metered unloading.
Safe Working Load (SWL)	1100 lbs – 4400lbs	Certified weight capacity rating under strict international testing standards.
Safety Factor (SF)	5:1 (Single-Trip) or 6:1 (Multi-Trip / Heavy-Duty)	Guarantees compliance with ISO 21898 safety margins.
Lifting Options	4-Point Cross Corner, Side-Seam, or Stevedore Straps	Compatible with standard forklifts, spreader bars, and overhead hoists.

3. Top Advantages of Using a Top Fill Skirt FIBC

When evaluating industrial containers, choosing a duffle bag fibc or top fill skirt FIBC offers clear operational advantages over narrow spouts or open-rim designs:

Maximum Loading Speed: Because a big bag with filling skirt opens across the entire surface area, filling chutes can discharge large material batches rapidly without neck clogs or backpressure.
Versatility Across Filling Equipment: Accommodates non-standard chutes, bucket loaders, inclined conveyors, and manual shoveling without requiring custom equipment adapters.
Complete Product Protection: Once cinched tight, the gathered top skirt jumbo bag acts as a protective barrier against moisture ingress, dust, and solar UV degradation.
Cost-Efficient Design: Offers full closure protection similar to a spout top, but at a lower manufacturing cost due to simpler sewing patterns.
Reduced Spillage & Floor Cleanup: The wide opening acts as a built-in funnel during high-volume dumping, keeping processing floors clean and safe.

4. Popular Top Combinations with Duffle Top Bulk Bags

While the classic fibc top skirt features a full-width perimeter skirt, manufacturers offer specialized top variations to accommodate different industrial filling systems and transport conditions:

Standard Full-Width Duffle Skirt Top

Design: The most common fibc duffle bag design, featuring a single, continuous woven skirt sewn directly along the upper body rim.
Operation: Opens wide to the exact dimensions of the bag base (35×35 inches or 40×40 inches), allowing direct dumping from front loaders and wide conveyor belts.

Duffle Skirt with Protective Rain Flap Cover

Design: A standard Top fill skirt FIBC paired with an extra rectangular fabric flap sewn along one edge of the top deck.
Operation: Once the duffle skirt is cinched and tied down, the outer protective flap folds over the gathered fabric knot and secures with tie tapes or velcro.

5. Primary Industry Applications of Duffle Top Bulk Bags

Because a duffle top bulk bag combines wide-aperture loading with sealed transit security, it serves diverse global sectors:

Agriculture & Grain Handling: Ideal for high-speed harvesting and bulk transport of corn, wheat, soybeans, raw coffee beans, oilseeds, and animal feed pellets. The wide-mouth skirt accommodates high-capacity combine discharge chutes and farm grain augers without spillage or neck constriction.

Mining & Heavy Minerals: Built with high-GSM woven polypropylene to transport heavy abrasive materials like crushed gravel, stone, silica sand, hydrated lime, bentonite clay, and raw ore concentrates. The full-width top entry prevents blockages during high-velocity conveyor feeding.

Chemicals & Fertilizers: Safely holds coarse chemical compounds, granular fertilizers, plastic polymer pellets, and synthetic resins. When equipped with custom PE inner liners or anti-static Type C/D fabrics, these empty super sacks prevent humidity degradation and static hazards during chemical loading.

Construction & Demolition Waste: Excellent for collecting, storing, and removing heavy jobsite rubble, demolition debris, topsoil, concrete scraps, and aggregate materials. The wide duffle opening allows skid-steers, front loaders, and manual crews to fill bags rapidly directly at the construction site.

Recycling & Waste Management: Extensively utilized for sorting and transporting bulk post-industrial plastic scrap, shredded rubber tires, metal turnings, and cardboard pulp prior to reprocessing.

6. People Also Ask About Duffle Top Bulk Bags

What is the difference between a duffle top and a spout top bulk bag?

A duffle top bulk bag opens to the full width of the bag body for versatile, high-volume filling from conveyors or bucket loaders. A spout top features a narrow, fixed cylindrical tube designed specifically for closed-loop, automated pipe systems handling fine powders.

What is the most common height for a duffle top?

The industry standard is typically 30 inches (approx. 70cm to 80cm). However, as a manufacturer, we can customize this from 15cm for shallow bags up to 100cm for very high-volume applications.

Can a duffle top bag be used for food-grade products?

Absolutely.EPP Vietnam produced food-grade duffle top bulk bags in “clean room” environments. When paired with a duffle top, it allows for easy bulk filling of ingredients like rice, sugar, or coffee beans.

Is a duffle top more expensive than a spout top?

Generally, duffle tops are slightly more affordable than complex spout tops because they require less precision sewing. They provide excellent value for companies looking to reduce packaging costs without losing protection.

Can duffle top bulk bags be made moisture-proof?

Yes. EPP Vietnam manufactures duffle top bulk bags using laminated (coated) polypropylene fabric or equips them with internal polyethylene (PE) liners for total moisture containment.

Request Pricing from EPP Vietnam

As a certified packaging manufacturer, EPP Vietnam delivers custom duffle top bulk bags manufactured to international quality standards (ISO 21898, UN hazardous goods certifications or Food grade standards).

Contact our technical sales team today to request technical specification sheets, order free sample swatches, or receive a competitive factory-direct wholesale quote!