Multi-Wall Open-Mouth Bags
2–5 ply kraft or white paper with sewn or pasted bottom. The workhorse for flour, feed ingredients, starch and other 5–50 kg dry products.
Paper Bags
Multi-wall paper sacks, engineered for the powder you pack
Open-mouth, valve, PE-lined and building-material bags — printed and produced in our own factory from 5 kg to 50 kg loads.
Product Range
Choose the structure first, then customise everything
Paper type, number of plies, gsm, liner, valve, bottom style and print can all be specified on your RFQ.
Valve Paper Bags
Fast valve filling, clean and tidy stacking. Choose paper valve, inner/outer valve or ultrasonic valve that can be heat-sealed after filling.
PE-Lined & Sewn-Bottom Bags
Kraft paper construction with a food-grade PE inner bag, ideal for sugar, oatmeal, starch and additives that need strong moisture protection.
Building-Material Bags
Valve sacks for putty powder, tile adhesive, fillers and spray mortar. Reinforced bottom strips carry 20–50 kg without leaking or tearing.
Options
Structures and choices we commonly build
| Option | What it means | Typical use |
|---|---|---|
| Paper plies | 2–5 plies of kraft or white paper, 70–110 gsm per ply | Lighter bags for 10–25 kg; more plies for 40–50 kg |
| PE inner liner | Food-grade or thickened PE bag inside the paper tube | Sugar, starch, oatmeal, moisture-sensitive powders |
| Valve type | Paper valve, inner/outer patch valve or ultrasonic valve | Valve filling lines in food, chemical and building plants |
| Bottom style | Sewn bottom, pasted/square bottom, with reinforcement strips | Standing bags, heavy loads, high stacking |
| Printing | Flexo, 1–8 colours, full print or spot print | Branding, barcode, multi-language instructions |
| Bag size & load | Custom dimensions, commonly 10 kg to 50 kg net weight | Match your filling machine and shipping pallet |
In-House Printing
Your artwork becomes a production-ready print
Our printing team reviews artwork for bag structure and colour, then prints with flexographic presses in our own workshop — no middleman between design approval and production.
- Artwork check before sampling
- Colour matching with customer standards
- First-piece inspection on every order
- Print on paper, film and laminated substrates
Applications
Start from what you pack
The same paper bag line is built differently for flour than for dry mortar. These pages show the structures we use most often in each industry.
Flour & food ingredients
3-ply 80 gsm kraft bags for 22.7 kg and 25 kg fills, with sewn or pasted bottoms and optional food-grade PE liner.
Flour Paper BagsPutty powder & dry mortar
Valve sacks in 2-paper-1-film or 3-paper-1-film for 20–50 kg, with perforated plies and reinforced bottoms.
Putty Powder Valve Bags
FAQ
Paper bag questions buyers ask us
What kinds of paper bags can you produce?
Open-mouth bags with sewn or pasted bottoms, standing square-bottom sacks, PE-lined sacks and valve bags — from 2 to 5 plies of kraft or white paper at 70–110 gsm, for fills of roughly 5 kg to 50 kg.
Do you print our own artwork?
Yes. Flexographic printing runs from 1 to 8 colours on paper, film and laminated substrates. Artwork is checked against the bag structure before sampling, and the first piece of every order is inspected.
Can you supply food-contact paper bags?
Yes. Food-contact packaging is produced under ISO 22000 and HACCP-based process control with food-grade raw material storage. See certifications.
What do you need to quote?
What you pack, fill weight, bag size or filling machine type, plies and liner, printing requirement, quantity and destination port. We reply within one working day.
Also see valve bag vs open-mouth bag and laminated woven bags.
Need a paper bag with a valve, a liner, or a tricky size?
Send us length × width × gusset, fill weight, material and quantity. We will advise the structure and quote.