20–25 kg self-standing format — the workhorse block bottom bag for premium flour, branded animal feed, and large retail consumer products.
The 40 × 60 cm block bottom bag is the largest standard block bottom format, designed for 20–25 kg loads where shelf presentation and brand impact matter as much as performance. This is the primary format for premium branded flour, specialty animal feed, and large-format consumer products sold through grocery, farm supply, and wholesale club channels. The self-standing block bottom creates a stable, rectangular footprint that maximizes shelf facings and pallet density.
At 20–25 kg, this bag operates at the upper end of the consumer-handling range, and fabric weight is specified between 70 and 100 GSM to match the density and abrasiveness of the fill material. Flour and powdered products run at the lower end; dense granular products like sugar and feed pellets require heavier fabric for puncture resistance. BOPP outer lamination transforms the bag into a premium retail package with photographic-quality graphics, while PE inner lamination adds a moisture barrier for hygroscopic products. The block bottom closure uses hot-melt adhesive or sewn construction, both compatible with automated block bottom forming and filling equipment.
All specifications are fully customizable. Contact us to discuss your exact requirements.
| Dimensions (W × H) | 40 × 60 cm |
|---|---|
| Fill Weight | 20–25 kg |
| Fabric Weight | 70–100 GSM |
| Material | Woven Polypropylene (PP) |
| Base Dimensions | 12 × 25 cm (flat rectangular block bottom) |
| Bottom Closure | Hot-melt adhesive or sewn |
| Top Closure | Fold-over sewn, heat-sealed, or pinch-top |
| Lamination | BOPP outer and/or PE inner lamination available |
| Printing | Up to 6-colour rotogravure or flexographic |
| Order Minimums | Flexible — contact us to discuss |
All specifications are customizable. Contact us with your product details.
Applications
Canadian flour mills use the 40 × 60 cm block bottom as their flagship retail and food service format. The self-standing presentation is critical for grocery shelf merchandising, where bags must hold their shape next to competing brands. BOPP lamination supports full-colour brand artwork, nutritional panels, and bilingual labelling required for Canadian retail distribution. PE inner lamination protects flour from moisture absorption during warehouse storage and retail shelf life.
Feed manufacturers package their premium branded lines in block bottom bags for farm supply retailers and pet specialty stores. The 40 × 60 cm format provides enough surface area for detailed feeding guides, ingredient declarations, and high-impact brand graphics. The block bottom base prevents bags from tipping on retail floors and pallet displays, reducing in-store damage and improving the shopping experience.
Wholesale club stores and bulk retail channels sell consumer staples in 20–25 kg packs that demand both structural integrity and premium shelf presentation. Products such as rice, sugar, birdseed, and ice melt are packed in this block bottom format for club store distribution. The self-standing shape enables floor-stacking merchandising without shelving, and the large print surface area accommodates the detailed product information and promotional graphics these channels require.
Yes. This size is compatible with automated block bottom bag forming, filling, and closing equipment used in flour mills, feed plants, and consumer product packing lines. The bag feeds from pre-made stacks or inline forming systems, and the top can be closed by sewing, heat-sealing, or ultrasonic methods. Sackora provides dimensional tolerances matched to your specific equipment.
The 40 × 60 cm block bottom bag is rated for 20–25 kg in standard 70–100 GSM fabric. For loads approaching 25 kg with dense or abrasive products, we recommend the higher end of the fabric weight range (90–100 GSM) and reinforced bottom construction. Bags can be engineered for specific loads up to 30 kg with appropriate fabric and closure specifications.
Block bottom bags form a true flat rectangular base that stands upright without support, making them ideal for retail shelf display and self-stacking. Gusseted bags expand when filled but have a rounded bottom that requires support or leaning. If your application prioritizes retail shelf presentation and self-standing capability, the block bottom is the better choice. If maximum fill volume and lower cost are priorities, a gusseted bag may be more suitable.
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