Paper and paper-poly
Multiwall kraft, or kraft laminated to PP woven for strength. Breathable, printable and the standard for cement and dry mortar.
Valve bags, sized to your packer.
Block-bottom valve sacks in paper, paper-poly, PP woven and BOPP woven, with the valve sized to your filling spout, for cement, lime, plaster, minerals and powdered chemicals.
What we source
A valve bag is filled through a small valve in one corner of a block bottom; the weight of the product closes the valve, so there is no sewing or sealing after filling. That makes it the standard sack for cement, lime, plaster, tile adhesive, gypsum, minerals and powdered chemicals on high-speed packing lines.
Our partner plants paste valves into four constructions: multiwall paper, paper-poly laminated woven, PP woven and BOPP laminated woven. The woven builds add tear strength and moisture resistance for products that sit outdoors or travel far; paper gives breathability and a natural finish.
Sizing follows your packer. We need three numbers, bag length, bag width and bottom (valve) width, which our catalog's size guide shows. Send them with the fill weight and we quote the construction.
Valve bags
Typical specification. Every line is confirmed on your quote.
- Materials
- Paper, paper-poly, PP woven, BOPP woven
- Bottom
- Block (flat) bottom
- Valve
- Pasted, self-closing
- Filling
- Air-packer and impeller lines
- Sizing
- Length × width × valve width
- Flexo or gravure
Builds
The same block-bottom valve construction in four materials. Pick by product, filling speed and how the bag is stored and shipped.
PP woven and BOPP woven
Woven polypropylene, plain or BOPP laminated for full-colour print. Moisture resistant and tear resistant for product stored outdoors.
Sizing guide
Three measurements set the bag: length, width and the bottom (valve) width that matches your filling spout. We confirm them against your packer before sampling.
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.
- Cement, mortar and tile adhesive
Paper or paper-poly valve bags for 20–50 kg fills on rotary packers.
- Lime, plaster and gypsum
Multiwall paper with a moisture-resistant ply where needed.
- Minerals and powdered chemicals
PP woven and BOPP woven valve bags for tear strength and outdoor storage.
- Feed additives and food powders
Food-grade kraft with liner options from BRCGS-certified plants.
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.
Will your valve bags run on my packer?
Yes, if the valve width and bag dimensions match. Send the bag length, width and valve width from our size guide, or a sample bag, plus the packer model if you have it. Samples are produced and tested on your line before production.
Paper or woven valve bags: which should I choose?
Paper breathes, prints well and is the norm for cement and mortar. PP woven and BOPP woven bags resist moisture and tearing, so they suit product that is stored outdoors, shipped long distances or handled roughly. Paper-poly gives a paper look with woven strength.
Can the valve be sealed after filling?
Standard pasted valves are self-closing under the product's weight. If your line has an ultrasonic sealer, tell us and we specify the matching valve.
What do you need to quote?
Product, fill weight, bag length, width and valve width (or a sample), material, print artwork and annual volume. Use the quote form on our homepage; we reply within one business day.
Send the bag length, width and valve width with your fill weight. We quote the matching build within one business day.
Request a quote