FIBC Filling Options and Top Designs

The FIBC top must match the filling equipment, product flow, required containment and closure method. Chute size alone is not sufficient: filling rate, entrained air, dust extraction, liner arrangement and the available connection method also affect the design.

Common FIBC Top Options

• Open top: unrestricted access for suitable products and filling methods where closure and contamination protection are not required.
• Duffle or skirt top: a full-width flexible extension that can be gathered and tied after filling.
• Filling spout: a defined inlet designed around the filling chute and closure arrangement.
• Filling spout with cover: an additional flap or cover can protect the closed spout during handling.
• Conical top: a shaped top may support the filling behaviour of selected low-bulk-density or difficult-flowing products.

Specification Inputs

We review chute diameter and shape, target filling rate, aeration or de-aeration needs, dust collection, required headroom, bag support during filling, closure access, liner connection and contamination-control requirements. Product trials may be advisable when the powder bridges, generates significant dust or traps air.

Liners and Electrostatic Conditions

A liner inlet can be loose, secured or form-fit according to the required filling connection. For electrostatic-sensitive applications, the complete combination of FIBC, liner, labels and document pockets must be assessed; one component must not be selected independently from the tested system.

Reference Framework

For non-dangerous goods, ISO 21898:2024 covers FIBC materials, construction, design, type testing, marking, selection and safe use. Electrostatic classification for FIBCs used in hazardous explosive atmospheres is addressed separately by IEC 61340-4-4:2018. Dangerous-goods applications require the applicable transport rules and an approved UN design type. The final approved specification and handling label govern the supplied FIBC.

Define Your FIBC Requirements

Complete the specification form and send it to info@elayplastic.com.