Sewn open-mouth (SOM)
Two to three layers of kraft paper, with or without a PE liner, closed with a sewn seam and easy-open tape. The workhorse for feed, seed and minerals.
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Multiwall paper bags, built to your line.
Two- and three-ply kraft paper sacks in sewn open-mouth, pinch-bottom and block-bottom builds, with or without a PE liner, printed, converted and delivered to your U.S. facility.
What we source
Multiwall paper bags are the standard sack for products that need to breathe or carry a natural-paper look: flour, sugar, salt, seed, feed, charcoal, cement and building materials. Our partner plants laminate, print, cut, gusset and bottom the bags on dedicated paper lines, and test tear strength, breathability and tensile strength in their own lab.
Three closures cover most filling lines. A sewn open-mouth bag (SOM) uses two to three layers of kraft with an easy-open tape and an optional PE liner bag. A pinch-bottom open-mouth bag (PBOM) is heat-sealed for a clean, square finish and comes with two gusset types. A block-bottom open-mouth bag (BBOM) stands square for retail display and pallet stacking.
Send a sample of the bag you fill today, with the weight and your closing method, and we match the ply, paper grade and closure.
Multiwall paper bags
Typical specification. Every line is confirmed on your quote.
- Plies
- 2 or 3 layers kraft
- Builds
- SOM, PBOM, BBOM
- Liner
- PE liner optional
- Closure
- Sewn, pinch-bottom, block-bottom
- Flexo, multi-colour
- Lab tests
- Tear, breathability, tensile
Three builds
Pick the bottom construction your filling and closing equipment runs; the ply count, liner and print are set per order.
Pinch-bottom open-mouth (PBOM)
A folded, glued pinch bottom with a clean square end and two gusset options. Suits automated filling and gives a retail-grade finish for flour, sugar and pet food.
Block-bottom open-mouth (BBOM)
A square block bottom that stands on the shelf and stacks flat on pallets. Also the base for paper valve bags.
Built for
Tell us the product, the fill weight and how it is handled, and we recommend a build. Samples are produced, inspected and shipped for your approval before production.
- Flour, sugar and salt
Food-grade kraft with a PE liner where moisture matters; printed 25 lb and 50 lb sacks like the salt bag in our catalog.
- Seed, feed and pet food
Breathable multiwall sacks that protect product and print well for the farm-store shelf.
- Cement, lime and chemicals
Heavy-duty plies for powders; see our valve bags page for high-speed filling.
- Charcoal and consumer goods
Printed block-bottom bags that stand up in retail.
Four steps to reliable sourcing
- 1
Discovery call
We learn your packaging specs, volume targets, budget, and timeline.
- 2
Supplier matching
Our network is filtered to a shortlist of pre-vetted manufacturers that fit.
- 3
Sample and approve
Samples produced, inspected, and shipped for your approval before production.
- 4
Production and delivery
Full production with QA checkpoints and coordinated logistics to your U.S. facility.
Questions buyers ask
Short answers. For anything else, the quote form on our homepage takes attachments and we reply within one business day.
What is the difference between SOM, PBOM and BBOM bags?
All three are multiwall kraft bags; the difference is how the bottom is closed. SOM is sewn, the simplest and most common. PBOM has a folded, glued pinch bottom for a square, sealed finish. BBOM has a block bottom that lets the bag stand upright. Your filling and closing equipment usually decides which one you need.
Can you add a moisture barrier?
Yes. A PE liner bag inside the kraft plies, or a PE-laminated inner ply, keeps moisture out for flour, sugar, salt and chemicals. Tell us the product and we recommend the construction.
Do you also make paper-poly laminated woven bags?
Yes. PP woven fabric laminated with natural kraft paper gives the paper look with woven strength. It is covered on our PP woven bags page.
What do you need to quote?
The product and fill weight, bag dimensions or a sample, ply count or paper grade if you know it, closure type, liner yes or no, print artwork and annual volume. Use the quote form on our homepage; we reply within one business day.
Send a sample of the bag you fill today and we match the ply, closure and print within one business day.
Request a quote