Liner thickness
Thicker liner film resists punctures from sharp sugar crystals during filling and stacking. Too thin, and the barrier is compromised exactly where the bag flexes most.
Application · Food
PE-lined paper bags for sugar and fine food powders
Multi-wall kraft sacks with a food-grade inner liner for 25–30 kg fills — built to stop caking through humid storage and long container transit.
What We Supply
Sugar punishes any weakness in the barrier
Refined sugar draws moisture from the air, then sets into hard lumps that customers return. The bag therefore has to do two jobs: hold 25–30 kg without seam failure, and keep humidity away from the product for weeks.
- 3-ply kraft structure, 80 gsm per ply
- Food-grade PE inner liner, 0.04–0.07 mm
- Sewn bottom with reinforced seam and extra thread
- Standing square-bottom option for pallet presentation
- Print for brand, net weight, origin and barcodes
Specifications
Common sugar bag structures
Configurations we build for refined sugar, icing sugar and other fine food powders.
| Structure | Typical size | Fill weight | Best for |
|---|---|---|---|
| 3-ply kraft + PE liner, sewn bottom | 76 × 50 cm | 30 kg | Refined white sugar for export packing |
| 3-ply kraft + PE liner, sewn bottom | Built to your fill weight | 25 kg | Standard retail and wholesale sugar packs |
| 3-ply kraft + thinner liner | Built to your fill weight | 25–30 kg | Short-haul distribution in dry climates |
| 3-ply kraft, pasted square bottom | Built to your fill weight | 25 kg | Standing bags for better pallet appearance |
Design Choices
Three decisions that keep sugar free-flowing
Seam construction
The sewn bottom carries the entire load. We use reinforced seams with stronger thread so the bag survives the drop from the filling spout and repeated pallet handling.
Food-contact materials
Paper, liner film and printing ink are selected for food-contact compliance, and food-grade materials are stored separately from industrial stock.
FAQ
Sugar bag questions
Why does sugar need a PE liner?
Sugar is hygroscopic — it takes moisture from the air and then cakes. A food-grade PE liner of 0.04–0.07 mm keeps it free-flowing through storage and a long sea voyage.
What size and weight is standard?
A common configuration is a 3-ply kraft bag around 76 × 50 cm filled with 30 kg, with a reinforced sewn bottom. Final size follows your filling machine and product grain.
Can you provide food-contact documents?
Yes. Food-contact packaging is produced under ISO 22000 and HACCP-based process control, and related documents are supplied with quotations on request. See certifications.
Can you print our brand and weight marks?
Yes — brand artwork, net weight, country of origin, barcodes and multi-language text, in one to eight flexographic colours.
Related: flour paper bags · all paper bag structures · MOQ and sampling
Send your sugar packing requirements
Tell us the product, fill weight, liner requirement, printing and destination. We will confirm the structure and quote within one working day.