Top Filling Bottom Discharge Chemical FIBC Bag 1000kg Load 5:1 Safety Factor

Problem

For 1000kg bulk packaging of urea, compound fertilizer and other fertilizer granules, the key requirement is often not only bag capacity but also how well the FIBC integrates with the packaging line.

Upstream filling equipment needs a defined inlet to transfer material into the bag, while downstream equipment may require the packed fertilizer to be released into a hopper, conveyor or blending system.

If the top is only open or the bottom is fully closed, additional handling may be required during filling or discharge.

For one-ton fertilizer packaging, interface design can therefore directly affect how smoothly the FIBC fits into the material-handling process.

Cause

Fertilizer packaging is usually part of a continuous production sequence.

Urea or fertilizer granules move from storage, weighing or filling equipment into the FIBC and may later be transferred into another process after transport or storage.

The top and bottom structures therefore serve different functions.

The top filling spout acts as the material inlet from upstream equipment, while the bottom discharge spout provides an outlet to downstream equipment.

Even if the bag can carry 1000kg, unsuitable interfaces may still create difficulties during actual operation.

Solution

This Chemical FIBC uses a top filling and bottom discharge configuration for 1000kg-level fertilizer packaging.

A φ45 × 50cm top filling spout provides the main material inlet from filling equipment.

A matching φ45 × 50cm bottom discharge spout allows the packed fertilizer to be released into hoppers, conveyors or downstream production systems.

Both spouts are equipped with 25cm ties for opening and closure control during different handling stages.

The bag is rated for a 1000kg working load with a 5:1 safety factor, making the design suitable for one-ton fertilizer bulk packaging rather than general open-top bag applications.

Specification

These specifications are best understood in relation to the actual fertilizer packaging process. The φ45 × 50cm top spout serves as the filling interface, while the φ45 × 50cm bottom outlet serves as the downstream discharge interface. The 1000kg rated working load and 5:1 safety factor define the one-ton packaging range, while minimum ≥1700N warp and weft strength provides measurable mechanical data for the base fabric.

Packaging Process

This FIBC is intended for fertilizer packaging lines with clearly defined upstream and downstream equipment.

During filling, urea or fertilizer granules enter the bag through the top spout.

After the target weight is reached, the inlet is closed and the bag moves into handling, transportation or storage.

At the receiving point, the FIBC can be positioned at the discharge station and the fertilizer can be released through the bottom outlet.

The complete material route can be summarized as:

Filling Equipment → Top Filling → 1000kg Packaging → Transport/Storage → Bottom Discharge → Downstream Equipment.

Material

The bag body, top and bottom use 160g/m² white coated fabric.

For urea and fertilizer granule packaging, the coated structure helps reduce direct exposure of the packed material to the external environment.

Minimum warp and weft fabric strength are both specified at ≥1700N, providing measurable mechanical data for the bag material.

The available specification does not include a dedicated waterproof or moisture-barrier rating, so the product should be described as coated rather than completely waterproof.

Application

This top-filling and bottom-discharge Chemical FIBC is mainly intended for 1000kg bulk packaging of urea, compound fertilizer and similar fertilizer granules, especially in fertilizer production and packaging lines where material needs to enter through an upstream filling interface and later discharge directly into hoppers, conveyors, blending systems or downstream production equipment.

FAQ

1. What is the top filling spout used for?

The top filling spout provides a defined inlet for fertilizer filling equipment.

This product uses a φ45 × 50cm filling spout for urea, compound fertilizer and similar fertilizer granules.

2. Where can the bottom discharge spout be used?

The bottom outlet can be used to discharge fertilizer into hoppers, conveyors, blending equipment or other downstream production systems.

3. Is the φ45 × 50cm interface suitable for every machine?

Not necessarily.

Actual compatibility depends on filling pipe dimensions, clamping method, receiving equipment and material flow characteristics.