Colored custom PP woven bags, packaging bags for grain, feed, chemicals, and construction materials.

This product is a polypropylene (PP) woven bag, manufactured from high‑quality polypropylene resin through extrusion‑drawing, circular weaving, cutting, and sewing processes. The bag features a tightly woven structure with a clear texture and excellent physical strength, making it widely suitable for packaging solid materials in industries such as manufacturing, agriculture, chemical processing, and construction. Available in a variety of colors—including red, green, and purple—as shown in the illustrations—this product can also be customized with additional finishing options such as lamination, inner lining, or printing to meet specific customer requirements. 
Applicable Materials

Agricultural products: grains (rice, wheat, corn), animal feed, seeds, and fertilizers. 
Chemical industry: chemical raw materials, plastic pellets, resin powders, dyes 
Building materials: putty powder, grout, mortar, cement admixtures 
Mineral products: ore powder, quartz sand, bentonite 
Food products: sugar, salt, flour, etc. (must comply with food-contact standards)

Core Advantages

High strength: The warp-and-weft woven structure imparts excellent tensile and tear resistance to the bag body. 
Wear-resistant and durable: Made from PP, it is resistant to abrasion and bending, making it ideal for long-distance transportation and repeated handling.

Moisture‑proof options: can be coated with a PE film or fitted with a PE liner, effectively blocking moisture and protecting the contents. 
Lightweight: With the same capacity, it weighs less, reducing per-unit transportation costs. 
Printable: Supports printing from monochrome to multi-color, facilitating brand promotion and product identification. 
Economical and environmentally friendly: recyclable and reusable, with low unit packaging costs.

Customization Scope

Dimensions: Width 30 cm–80 cm, Length 40 cm–120 cm, custom-made upon request. 
Grammage: 40 g/m²–100 g/m² (per square meter), selected according to load-bearing requirements. 
Colors: red, green, blue, yellow, white, translucent, etc.; custom options available based on Pantone color codes. 
Printing: Offset and flexographic printing, from monochrome to multi-color; capable of printing logos, text, and graphics. 
Lamination: Single-sided or double-sided PE lamination available to enhance moisture resistance. 
Liner: Optional PE liner bag, suitable for powdered materials with high moisture‑proof requirements. 
Bag types: standard open-top bags, valve bags, zip-lock bags, etc.

Moisture-proof performance

Standard PP woven bags offer a degree of breathability and are suitable for materials with modest moisture‑proofing requirements. 
After applying a PE film, moisture‑proof performance is significantly enhanced, and the water vapor transmission rate is greatly reduced. 
Adding a PE-lined inner bag provides better sealing and is suitable for powdery, moisture‑sensitive materials. 
The specific moisture‑proof rating is determined by the lamination thickness and the liner material, and test data can be provided.

Tensile strength

Longitudinal tensile strength: ≥400 N/5 cm (reference value for standard specifications; actual value depends on basis weight) 
Weft tensile strength: ≥350 N/5 cm (reference value for standard specifications; actual value depends on basis weight) 
Bottom seam tensile strength: ≥200 N (reference value for standard specifications) 
Drop Test: A fully loaded bag dropped freely from a height of 1.2 m remains intact (standard 50 kg specification). 
The above are typical reference values; actual specifications may vary depending on basis weight, dimensions, and manufacturing processes. Test reports can be provided upon customer request.

Filling method

Manual filling: Suitable for small-batch, multi-variety production. 
Semi-automatic filling: Used in conjunction with a filling machine, offering moderate efficiency. 
Fully automatic filling: Suitable for valve bags, compatible with automated filling lines, offering high efficiency and minimal dust. 
When filling, it is recommended to use a funnel or a filling nozzle to prevent product spillage and contamination of the bag opening.

Sealing method

Sewing machine stitching: A common method that uses cotton or polyester thread, providing a strong and reliable seam.

Heat-seal closure: Suitable for laminated bags or lined bags, offering excellent sealing performance. 
Twine or wire ties: Suitable for temporary sealing or scenarios requiring repeated opening. 
Self-sealing closure: Suitable for small‑size retail packaging; can be opened and resealed repeatedly. 
Customers can select the appropriate sealing method based on material characteristics and application scenarios.

Packaging Specifications

Standard load capacities: 5 kg, 10 kg, 15 kg, 20 kg, 25 kg, 40 kg, 50 kg 
Standard dimensions (width × length): For 25 kg, 45×75 cm or 50×80 cm; for 50 kg, 55×95 cm or 60×100 cm. 
Square gram weight: 50 g–90 g (commonly 60 g–70 g) 
Packaging method: 500 or 1,000 pieces per bundle, secured with woven fabric or strapping. 
Customizable to any specification according to customer requirements.

Price and Minimum Order Quantity

Bulk discounts apply—higher order volumes qualify for lower unit prices. 
Supports mixed‑batch orders (for the same specification, different colors can be combined to meet the minimum order quantity). 
We welcome your inquiries with specific specifications and quantities, and we will provide a quotation within 24 hours.