Duffle Top / Discharge Spout Bottom FIBC Bags
A hybrid bulk bag combining wide-access top filling with a controlled bottom discharge spout - for operations where fill flexibility and discharge precision are both required.
FIBC Bulk Bags
Spout Top / Spout Bottom FIBC Bags
Spout top spout bottom FIBC bags are engineered for operations where controlled filling and controlled discharge are both process requirements - not just preferences. The top spout guides material in cleanly. The bottom spout controls how and where it comes out. For fine powders, chemical compounds, food ingredients, and resin pellets, this configuration removes the containment risks that an open-base format would leave unresolved.
Quick Answer
The 30-second specification check.
- Use when chemical compounds, mineral fillers, and specialty additives where discharge rate and containment matter
- Safe working load 500 kg to 2,000 kg standard
- Fabric Woven polypropylene - coated or uncoated
- Test standard ISO 21898 (COC included)
What This Configuration Is
About this bag configuration.
The spout top / spout bottom FIBC has a fabric spout sewn into the top for guided, contained filling and a fabric discharge spout at the bottom for measured, controlled emptying. Both spouts are tied or cinched closed when not in use. This configuration is most commonly selected when the material is fine, sensitive to contamination, or part of a production process where discharge rate, containment, or process cleanliness matters. Available in coated or uncoated body, with optional liner configurations, anti-sift construction, and print options depending on application requirements.
Compare with: Duffle Top / Discharge Spout Bottom Duffle Top / Flat Bottom Full Open Top / Flat Bottom With Liner
Industries & Applications
Where this bag fits.
- Fine powders requiring controlled discharge - chemical compounds, mineral fillers, and specialty additives where discharge rate and containment matter
- Food ingredient production workflows - dry ingredients that need cleaner transfer between filling and processing stations
- Resin and pellet handling lines - where controlled emptying into downstream equipment is a plant requirement
- Dust-sensitive operations - environments where airborne material during filling or discharge creates a safety or quality concern
- Chemical blending and distribution - applications where the bag must interface cleanly with both the filling station and the customer's unloading equipment
Chemicals and Powders
Controlled filling and discharge for fine compounds and additives
View industry detail →
Food Ingredients
Cleaner transfer for dry ingredient production workflows
View industry detail →
Plastic Resin and Pellets
Resin and pellet handling with controlled emptying
View industry detail →
Industrial Manufacturing
Process-integrated filling and discharge systems
Specs at a Glance
Technical reference for quoting discussions.
Specifications below reflect common commercial ranges and standard options for this bag style.
Datasheet
XTRX-STSB · 2026
| 01 Configuration | Spout top / spout bottom |
|---|---|
| 02 Top inlet | Fabric fill spout - 14 in to 20 in diameter typical |
| 03 Bottom outlet | Fabric discharge spout - 14 in to 20 in diameter typical |
| 04 Typical capacity | 500 kg to 2,000 kg |
| 05 Safe working load (SWL) | 500 kg to 2,000 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 Anti-sift construction | Available on request |
| 10 Loop style | Cross-corner standard; alternatives available |
| 11 Print options | Single-colour or multi-panel |
* All FIBC bags are fully customizable for dimensions, fabric weight, loop style, liner setup, top and bottom construction, and print requirements.
Sizes & Pricing
Standard variants and published pricing.
Variants with published volume pricing appear first. Open any row for full specification, pricing tiers, and a quick inquiry form.
| Variant | Size | SWL | Build | Liner | Action |
|---|---|---|---|---|---|
| 35x35x45 standard spout | 35 x 35 x 45 in | 1000 kg | Coated woven polypropylene | No | Open |
| 35x35x45 anti-sift | 35 x 35 x 45 in | 1000 kg | Coated woven polypropylene with anti-sift seam construction | No | Open |
| 35x35x45 with PE liner | 35 x 35 x 45 in | 1000 kg | Coated woven polypropylene | PE liner | Open |
| 42x42x48 heavy-duty spout | 42 x 42 x 48 in | 1500 kg | Heavy-duty coated woven polypropylene | No | Open |
Standard Build
What this bag includes.
- Top fill spout - guided fabric inlet for controlled, contained filling
- Bottom discharge spout - fabric outlet for controlled, measured emptying
- Both spouts tie-closed - secured during transport and storage
- Woven polypropylene body - coated or uncoated depending on material requirements
- 1-ton class construction - SWL and safety factor confirmed at project review
- Optional liner - available for additional barrier or contamination control
- Optional anti-sift construction - seam and stitch configuration for fine powder applications
- Optional print - product identification, handling marks, or regulatory language
Customize Beyond Standard
Configure to your requirements.
- Spout diameter and length - top and bottom spouts sized to your fill and discharge equipment
- Spout tie and cinch systems - closure method confirmed at specification review
- Anti-sift construction - available for fine powder and chemical applications
- Coating and liner options - confirmed against material barrier and contamination requirements
- Food-grade configuration - requirements reviewed individually at project level
- Loop style and placement - cross-corner standard; alternatives available
- Print layout - branding, handling instructions, regulatory information
Specifications reviewed by
Roman Fainshtein, FIBC specification lead, XTRX (a Sackora brand)
Specification FAQ
Questions that come up during specification review.
What is a spout top spout bottom FIBC bag?
A spout top spout bottom FIBC has a fabric tube at the top for guided, controlled filling and a fabric tube at the bottom for controlled discharge. Both spouts are tied closed when not in use. This configuration is used when both the fill and discharge processes require containment - common in chemical, food ingredient, and resin applications.
How does the bottom discharge spout work?
The bottom discharge spout is a fabric tube sewn into the base of the bag. It is tied closed during filling, transport, and storage. When the bag is ready to be emptied, the tie is released and the material flows out through the spout. Spout diameter and length are confirmed at specification review based on downstream equipment requirements.
When is a spout top spout bottom bag the better choice over an open top?
The spout top spout bottom format makes sense when controlled discharge is a process requirement - not just a preference. If your material is fine, sensitive to contamination, or part of a production workflow where discharge rate or containment matters, the spout-based configuration removes variables that an open-base approach would leave unresolved.
What is anti-sift construction and when is it needed?
Anti-sift construction refers to seam and stitch configurations that reduce or prevent fine material from escaping through the fabric weave or seam intersections. It is typically specified for very fine powders, chemical compounds, or materials with small particle sizes where leakage through standard construction is a concern. Available on request - confirmed at specification review.
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.
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.
Duffle Top / Flat Bottom FIBC Bags
A 1-ton bulk bag with a closeable top opening for materials that benefit from covered transport or post-fill containment.
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.