Custom PP Woven Grain Packaging Bags

Product Description

Product Details

One Nominal Weight, Different Grain Volumes

Corn kernels, wheat, soybeans and lentils do not occupy the same volume at an equal net weight. Grain shape also changes how the contents settle during conveying and stacking. A 25 kg corn bag may therefore need different dimensions from a 25 kg soybean bag, even when both use a similar woven fabric.

Choose Breathability or a More Closed Structure

Small gaps remain between the tapes of an uncoated woven bag, allowing limited airflow. This is often practical for properly dried grain when breathability is part of the warehouse plan. Packaging cannot correct high grain moisture, unsuitable temperature or poor warehouse ventilation, so the condition of the crop must be controlled before filling.
Coating closes the woven surface and can reduce passage of fine particles or dust. An inserted PE liner forms a separate inner layer where the distribution route calls for additional protection from ambient moisture. A more closed structure changes how air leaves during filling, so the opening, liner fit and closing process should be checked together.
For a retail or branded agricultural product, a printed laminated surface can carry more detailed artwork than basic flexographic printing. The lamination, print method and required barrier should be confirmed for the individual crop and market rather than treated as one standard construction for every grain.

Filling, Closing and Warehouse Handling

Heat-cut and cold-cut mouths offer straightforward filling. A hemmed mouth provides a neater edge and better resistance to fraying, while a drawstring can suit applications that require convenient closing or reopening. The bottom may be single- or double-stitched, with sealing tape considered when small particles pass through the sewing line.
The opening and overall dimensions can be developed for manual, semi-automatic or automatic filling.

Food-Related Material and Printing Review

For food-related grain packaging, 100% virgin PP is available and commonly recommended. Product-contact, migration, ink and labeling requirements vary by crop and destination, so the applicable order requirements should be confirmed before production.
Flexographic printing works well for logos, grain names, grade, net weight, origin and handling marks. A laminated printed surface supports photographs and finer graphics. Barcode placement should avoid folds, seams and high curvature, and a printed sample should be scanned under the buyer's normal conditions.
Order checks may include fabric weight, weave consistency, tensile performance, print color and registration, lamination bond, liner fit, stitching and packed quantity. Requirements should be recorded against the approved sample.

Item	Reference Options
Product	PP woven grain packaging bags
Applications	Corn, wheat, soybeans, barley, sorghum, millet, pulses, lentils and agricultural seeds
Material	Woven PP; 100% virgin PP available and commonly recommended for food-related packs
Structure	Plain uncoated, coated, printed laminated or PE-lined
Common capacities	10 kg, 20 kg, 25 kg, 40 kg and 50 kg
Fabric weight	Commonly 55–100 gsm
Weaving density	Commonly 10 × 10, 11 × 11 or 12 × 12; other constructions by review
Bag width	Commonly 35–75 cm
Bag length	Commonly 55–110 cm
Fabric colors	White, natural/translucent, yellow, green, red or another production color
Top	Heat-cut, cold-cut, hemmed or drawstring
Bottom	Single- or double-stitched; sealing tape optional
Printing	Flexographic on plain/coated fabric; laminated printing after artwork review
Other options	Inserted or sewn-in PE liner, anti-slip treatment and UV stabilization
MOQ, plate cost and lead time	Confirmed after size, structure, artwork and quantity are reviewed

Typical Size Reference

These dimensions are starting points in width × length format. Grain density, headspace, liner and closing method can change the final size.

Fill weight	Reference bag size	Reference fabric weight
10 kg	About 35 × 55 cm	55–65 gsm
20 kg	About 45 × 70 cm	60–70 gsm
25 kg	About 45 × 75 cm	60–75 gsm
40 kg	About 55 × 90 cm	65–85 gsm
50 kg	About 55 × 95 cm	70–90 gsm

Information Needed Before Quotation

Grain or agricultural product and its condition at packing
Target net weight and bulk density, if available
Current bag size, filled sample or required dimensions
Manual, semi-automatic or automatic filling method
Preferred breathable, coated, laminated or PE-lined structure
Top, bottom, anti-slip and temporary UV requirements
Artwork, barcode and required printing method
Storage route, order quantity and destination

Start with the Crop and Prove the Size

Tell XH Packaging what grain you pack, the target weight and how the filled bags move through storage and distribution. We can compare breathable and more closed constructions, prepare a sample and confirm capacity, closing and stack behavior with the actual crop.

Grain Packaging Bags FAQ

1. Which crops are covered by this grain bag range?

The range covers corn, wheat, soybeans, barley, sorghum, millet, pulses, lentils and agricultural seeds. Bag size and structure depend on crop density, condition at packing and the handling route. Send the crop type, target weight and current bag details.

2. Should corn or wheat use a breathable woven bag?

Use an uncoated woven bag when properly dried grain and the storage plan call for limited airflow. It cannot correct high moisture, unsuitable temperature or poor warehouse ventilation. Provide the grain condition and storage route before selecting the structure.

3. When is a coated, laminated or PE-lined structure useful?

Coating helps control passage through the weave, a laminated surface supports detailed branding, and a PE liner adds a separate inner layer. Humidity, particle size, filling behavior and presentation needs determine the best option. Test the structure with the actual crop and packing line.

4. Can one bag size hold 25 kg of any grain?

Not reliably, because crops have different bulk densities and settling behavior. Corn, wheat and soybeans may need different dimensions at the same net weight. Confirm the size through trial filling or a proven bag sample.

5. Can a barcode be printed on a grain bag?

Yes, if the artwork and bag surface provide suitable contrast, a compliant quiet zone and flat placement. The code should avoid folds, seams and high curvature. Send the barcode file, required size and scanner conditions for a printed-sample test.