Dry Mix Mortar Packaging: A Practical Guide for 20kg-40kg Bags
Picking the right bag for dry mix products—whether it’s Tile Adhesive, Wall Putty, Plaster, or specialized Grout—isn’t just about price. Each material, from Gypsum Powder to Floor Leveling Compounds, has different density and moisture requirements. It affects how fast you fill, what equipment you need, and how your brand looks on the shelf. We’ve been making these bags for over 20 years, and we’ve seen customers make every mistake in the book. Here’s what actually matters.
The Six Bag Types
| Bag Type |
Price |
Equipment Required |
Best For |
| Open-mouth PP sewn bag with liner |
Lowest |
None / Sewing Machine |
Tight budgets, basic operations |
| PP sewn valve bag with lamination |
Low |
Valve filler |
Dust control on a budget |
| PP block bottom valve bag(AD star Bag) |
Medium |
Valve filler |
Most industrial applications |
| Paper bag with film(Paper+film+Paper) |
Med-High |
Valve filler |
Moisture-sensitive products |
| 3-4 Layer kraft paper bag |
High |
Valve filler |
Sustainability-focused brands |
| PP block bottom valve bag with inner PE&Paper liner |
High |
Valve filler |
Premium branding & marketing |
What You Need to Know About Each Type
1. Open-Mouth Sewn Bag with liner
The cheapest option out there. You fill it, then sew the top shut. No special equipment needed—just a sewing machine or even manual stitching. More dust during the filling process compared to valve bags.
Pick this if: You have limited budget for equipment, or you're okay with handling the dust during filling.
2. PP Sewn Bottom Valve Bag with lamination
You fill through the valve at the top—when the powder inside pushes against the valve after filling, it seals automatically.. It keeps dust down better than open-mouth, but you still need a valve filling machine.
Pick this if: You want cleaner operations but can’t afford the step up to block bottom valve bags.
3. PP Block Bottom Valve Bag (AD Star Bag)
This is what most of our customers end up choosing. The woven polypropylene material is strong—It can perfectly withstand a weight of 50 kg without breaking.
- An inner paper liner for moisture protection
- A PE film layer for extra barrier
Pick this if: You want the standard, reliable workhorse. This is what 70% of our orders end up being.
4. Paper Bag (2-Layer Kraft + 1 PE Film)
Two layers of kraft paper with a thin PE film sandwiched in between. The outside looks like paper; the inside keeps moisture out. It’s a middle ground—you get the paper aesthetic without sacrificing moisture protection.
Pick this if: Your product needs to stay dry, but your customers associate plastic with “cheap.”
5. 3-4 Layer Kraft Paper Bag
Pure paper. No plastic at all. 3-4 layers of kraft paper, fully biodegradable. Popular in Europe and North America where sustainability claims get scrutinized.
Pick this if: Green credentials are central to your brand, or your target market requires biodegradable packaging.
6. Woven Valve Bag with Premium Printing
Same durable woven material, but with high-quality color printing on the outside. This is for when you want your bag to do marketing work on the shelf.
Pick this if: You’re selling a premium product or need your brand to stand out.
Environmental Notes
- 3-4 Layer kraft paper: Fully biodegradable, but costs more.
- Woven (PP/PE): Recyclable in most areas, very durable.
- Paper + PE composite: Check local recycling rules—the PE layer complications things.
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