The industry-standard woven polypropylene bag — sewn shut after filling for secure, tamper-evident closure across every application.
Constructed from flat-woven or circular-woven polypropylene tape fabric, open mouth bags deliver excellent tear and puncture resistance at low per-unit cost. Standard fabric weights range from 55 to 120 GSM depending on load and product density. UV stabilization is available for bags stored outdoors prior to shipment. Inner PE liners or lamination can be added for moisture protection, and the outer surface accepts up to 4-colour flexographic printing for product identification, regulatory markings, and brand graphics.
Open mouth bags are the default specification for agricultural commodities, building materials, minerals, chemicals, and animal feed operations across Canada. Their universal compatibility with existing bag closing equipment — including Fischbein, Newlong, and Union Special stitchers — means they integrate directly into your current packing line without modification.
Available Sizes
Click any size below for full specifications, or request a custom size.
All specifications are fully customizable. Contact us to discuss your exact requirements.
| Material | Woven Polypropylene (PP) |
|---|---|
| Fabric Weight | 55 – 120 GSM |
| Dimensions (W × L) | 35 × 60 cm to 60 × 105 cm |
| Load Capacity | 10 – 50 kg |
| Closure Method | Sewn top — fold-over, crepe tape, or plain stitch |
| Weave Type | Flat woven or circular woven |
| Liner Options | PE inner liner (0.04 – 0.08 mm) |
| UV Stabilization | Available — 6 to 18 months outdoor rated |
| Printing | Up to 4-colour flexographic |
| Regulatory | CFIA food-grade available on request |
Open mouth bags are the standard packaging for wheat, barley, corn, canola seed, and animal feed across the Canadian Prairies. The open top accommodates high-speed net weigh filling systems, and the sewn closure provides tamper evidence and secure containment during truck and rail transport.
Sand, gravel, dry morite, concrete patch, and landscaping products move in open mouth PP woven bags rated for 25–50 kg. The tough woven fabric resists puncture from sharp aggregate particles, and UV stabilization protects bags stored in outdoor retail yards and job sites.
Calcium carbonate, silica, soda ash, fertilizer, and industrial salt are packed in lined open mouth bags to prevent moisture ingress and product contamination. PE liners provide the vapour barrier required for hygroscopic products while the woven PP outer handles palletizing, stacking, and forklift handling.
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Learn More →Bespoke dimensions, specialty printing, and unique configurations engineered to your exact specification.
Learn More →Open mouth bags are compatible with all standard industrial bag sewing machines, including Fischbein, Newlong, Union Special, and Yao Han portable and stationary stitchers. Both single-thread chain stitch and double-thread lock stitch closures are supported. Crepe tape can be fed through the sewing head simultaneously for a folded tape finish that improves dust containment.
Yes. Sackora supplies food-grade open mouth bags manufactured from 100% virgin polypropylene in facilities certified to ISO 22000. These bags meet CFIA requirements for direct contact with dry food products such as flour, rice, sugar, and animal feed ingredients. Specify food-grade when requesting your quote.
Flat woven bags are made from a flat fabric sheet that is folded and sewn along one side and the bottom, producing two side seams. Circular woven bags are produced on a circular loom as a continuous tube, eliminating side seams entirely. Circular woven construction offers better burst strength and a cleaner appearance since there is no side seam to fail under load.
Bag sizing depends on your product's bulk density, target fill weight, and packing line clearances. As a guideline, a standard 50 × 85 cm bag holds approximately 25 kg of product with a bulk density of 0.6–0.8 g/cm³. Sackora can run fill trials or size calculations based on your product specifications — contact us with your fill weight and product type for a recommendation.
Standard woven polypropylene bags stored indoors out of direct sunlight maintain full structural integrity for at least 3–5 years. UV-stabilized bags rated for outdoor exposure maintain performance for 6–18 months depending on UV additive loading and regional UV index. We recommend rotating outdoor stock within the rated exposure window.
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