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SOM — Sewn Open Mouth Bags
SOM (Sewn Open Mouth) bags are multiwall kraft paper bags with a sewn-closed bottom and an open top for filling. One of the most economical and widely used industrial paper bag formats globally, SOM bags deliver reliable strength and filling line compatibility for cement, chemicals, animal feed, and a wide range of powdered or granular products.
Why Choose SOM — Sewn Open Mouth Bags?
Engineered to industry standards and built for reliability in Canadian industrial conditions.
Everything You Need to Know
The SOM bag is one of the most enduring formats in industrial packaging — valued for its simplicity, strength, and low cost. The sewn bottom provides exceptional resistance to tearing and bursting under load, while the open top accepts a wide variety of filling methods including gravity, auger, and pneumatic systems.
After filling, the open top is typically closed by sewing, heat-sealing, or gluing depending on the specific application and downstream handling requirements. This flexibility makes SOM bags compatible with a vast range of production lines without specialist equipment.
Multiple kraft paper plies are available in 2-ply to 5-ply constructions. Inner plies of polyethylene or bitumen can be added for products requiring protection from moisture or improved resistance to aggressive chemical contents.
Wholesale Packaging supplies SOM bags across Canada in a comprehensive range of sizes, ply counts, and print specifications. We work with cement producers, fertilizer packers, chemical manufacturers, and animal feed companies.
📋 Quick Reference
Standard Specifications
All specs are standard ranges. Contact us for custom sizes, materials, and certifications.
| Specification | Details |
|---|---|
| Bag Type | Sewn open mouth (SOM) |
| Bottom | Sewn closed bottom |
| Top | Open mouth — closed by sewing, heat seal, or glue after fill |
| Construction | Multi-wall natural kraft paper |
| Number of Plies | 2-ply to 5-ply |
| Capacity | 10 kg – 50 kg |
| Moisture Protection | Optional PE or bitumen inner ply |
| Printing | Up to 6-colour flexographic |
| Custom Dimensions | Available on request |
Industries & Use Cases
Trusted across a wide range of industries throughout Canada and internationally.