Spout Top / Spout Bottom FIBC Bags
A controlled-fill and controlled-discharge bulk bag format for operations where material containment and measured emptying are process requirements.
FIBC Bulk Bags
Spout Top / Flat Bottom FIBC Bags
Spout top flat bottom FIBC bags give buyers a guided fill point at the top while keeping the simplest possible pallet base at the bottom. This format is used when the loading side needs better containment or better alignment with filling equipment, but the bag will still be discharged by tipping, cutting, or one-time release rather than through a sewn bottom spout.
Quick Answer
The 30-second specification check.
- Use when open emptying
- Safe working load 500 kg to 1,500 kg standard
- Fabric Woven polypropylene - coated or uncoated
- Sizes 35 x 35 x 40 in to 42 x 42 x 60 in common range
- Discharge Tip, cut, or open-base emptying
- Test standard ISO 21898 (COC included)
What This Configuration Is
About this bag configuration.
The spout top / flat bottom configuration combines a top fill spout with a flat sewn base. The top spout supports cleaner, more controlled filling into the bag body, while the flat bottom keeps the bag stable on a pallet and easy to handle in storage and transport. This format is a practical choice for powders, ingredients, resins, and industrial materials that benefit from guided filling but do not require a controlled discharge outlet.
Compare with: Spout Top / Spout Bottom Open Top / Flat Bottom Full Open Top / Flat Bottom With Liner
Industries & Applications
Where this bag fits.
- Food ingredients loaded through guided filling equipment but discharged by cut-open emptying
- Plastic pellets and specialty resin where top containment matters more than bottom metered flow
- Fine powders that benefit from controlled filling into the bag body
- Industrial additives and dry compounds with a cleaner top-loading requirement
- Chemical powders where loading containment matters but a bottom spout is not required
Food Ingredients
Controlled top loading with simple downstream emptying
View industry detail →
Chemicals and Powders
Cleaner filling for powders and dry compounds
View industry detail →
Plastic Resin and Pellets
Guided loading for pellets and resin
View industry detail →
Industrial Manufacturing
Process-driven filling with straightforward discharge
View industry detail →Specs at a Glance
Technical reference for quoting discussions.
Specifications below reflect common commercial ranges and standard options for this bag style.
Datasheet
XTRX-STFB · 2026
| 01 Configuration | Spout top / flat bottom |
|---|---|
| 02 Top inlet | Fabric fill spout - 14 in to 20 in diameter typical |
| 03 Bottom construction | Flat sewn base |
| 04 Typical capacity | 500 kg to 1,500 kg |
| 05 Safe working load (SWL) | 500 kg to 1,500 kg standard |
| 06 Safety factor | 5:1 standard; 6:1 available on request |
| 07 Body fabric | Woven polypropylene - coated or uncoated |
| 08 Liner option | Available on request |
| 09 Loop style | Cross-corner standard; alternatives available |
| 10 Bag dimensions | 35 x 35 x 40 in to 42 x 42 x 60 in common range |
| 11 Discharge method | Tip, cut, or open-base emptying |
* All FIBC bags are fully customizable for dimensions, fabric weight, loop style, liner setup, top and bottom construction, and print requirements.
Standard Build
What this bag includes.
- Top fill spout for guided, contained loading
- Flat sewn bottom for stable pallet handling
- Four-loop lift design for forklift or crane handling
- Woven polypropylene body in coated or uncoated construction
- Optional liner compatibility for barrier support
- Optional anti-sift construction for finer materials
- Print options for identification and handling instructions
Customize Beyond Standard
Configure to your requirements.
- Top spout diameter and length to match fill equipment
- Coated vs. uncoated fabric depending on containment requirements
- Loose or form-fit liner options
- Food-grade and clean-fill review on request
- Loop style and placement based on handling method
- Print, labeling, and lot identification options
Specifications reviewed by
Roman Fainshtein, FIBC specification lead, XTRX (a Sackora brand)
Specification FAQ
Questions that come up during specification review.
When should I choose a spout top flat bottom FIBC bag?
Use a spout top flat bottom bag when your filling process benefits from a guided inlet or cleaner top loading, but your discharge process does not require a sewn bottom spout. It is a practical middle ground between open-top simplicity and full spout-top/spout-bottom control.
How are spout top flat bottom bags typically emptied?
They are usually emptied by tipping, cutting, or opening the bag body rather than through a bottom discharge spout. This makes them useful where the loading side is process-sensitive but the unloading side is simpler.
Do you offer liner options?
Liner options can be discussed during the RFQ process when the application, material characteristics, and handling requirements call for additional containment or barrier support.
Can XTRX support custom bag sizing and specifications?
Yes. XTRX is positioned to support project-specific requests for dimensions, loop styles, coating, liner needs, print requirements, and target load parameters. Final specifications should be confirmed through the quote process.
How do I request a quote?
Use the RFQ form to provide company details, product interest, estimated quantity, bag dimensions, fill material, delivery destination, and timeline. That structure helps qualify requests and speeds up next-step conversations.
Do you supply customers across Canada?
XTRX is positioned as a Canada-wide supply partner for qualified buyers. Coverage messaging is national, with support for quote discussions involving Ontario, Quebec, Alberta, British Columbia, and other provinces.
Compare Nearby Formats
Adjacent configurations worth reviewing.
These formats are worth comparing if your application has requirements this configuration does not fully address.
Open Top / Flat Bottom FIBC Bags
A straightforward 1-ton bulk bag for dry flowable materials that need efficient filling and stable pallet handling.
Full Open Top / Flat Bottom FIBC Bags with Liner
Maximum top fill access with built-in liner compatibility - for materials that need a barrier layer and a wide-mouth loading format.
Ready for a Quote?
Share your dimensions, material, and estimated volume.
The RFQ form is designed to capture the details procurement and operations teams usually want to align on early. The faster you provide them, the faster the quote conversation moves.