Multi-layer color-printed kraft paper fertilizer packaging woven bags

Applicable materials:
Compound fertilizers, organic fertilizers, bio-organic fertilizers, controlled-release and slow-release fertilizers, water-soluble fertilizers, blended (BB) fertilizers, urea, potash fertilizers, phosphate fertilizers, nitrate-based fertilizers, humic acid fertilizers, amino acid fertilizers, micronutrient and mesoelement fertilizers, and other granular or powdered fertilizer products.

Key features:
The outer kraft paper layer delivers a natural, rustic texture that enhances the added value of fertilizer products, making it ideal for premium fertilizer brands and export orders. The multi-layer composite structure offers high strength and excellent stiffness, ensuring the bag maintains a full, well-shaped profile after filling and remains stable and upright during palletizing. The bag opening is smooth and even, facilitating easy opening and filling, and is compatible with both high-speed automated filling lines and manual filling stations. Sealing options are flexible: customers can choose seam sealing, heat sealing, or ultrasonic sealing, with ultrasonic sealing providing needle-free seals and superior leak-proof performance. The multi-layer construction—kraft paper plus woven fabric plus a high-barrier film—ensures outstanding resistance to leakage, moisture absorption, and caking, effectively preserving the stability of active fertilizer ingredients. Optional additives such as anti-aging agents and UV stabilizers further enhance durability, preventing brittleness and color fading when stored outdoors or in warehouses. The printing is exquisite, with clear and prominent nutrient labeling that complies with regulatory requirements. Overall, the cost is moderate: compared with pure aluminum foil bags, this solution is more economical yet offers higher strength, making it well-suited for large-volume procurement and export orders.

Core Advantages:
Moisture-proof and anti-caking; high tensile strength and tear resistance; natural kraft paper appearance; multi-layer composite structure with high strength; resistant to fertilizer corrosion; compatible with high-speed filling lines; leak-proof; compliant with fertilizer packaging regulations.

Material and Craftsmanship:
The base material consists of a woven fabric made from PP (polypropylene) or HDPE (high-density polyethylene), laminated on the exterior with high-grammage kraft paper (available in white, yellow, or natural colors), and internally paired with a PE barrier film or an aluminum foil barrier layer (either laminated or co-extruded as an inner liner), thereby forming a three- or four-layer composite structure of “kraft paper + woven fabric + high-barrier film.” Bag styles include flat-bottom bags or M-seam bags (optional), with bottom configurations that can be sewn-bottom (requiring sealing strips or liner paper), heat-sealed, or ultrasonically sealed. Printing is carried out using 2- to 7-color gravure color printing with lamination, producing exquisite patterns and vibrant colors; the natural, rustic texture of the kraft paper base enhances the visual appeal, making it ideal for showcasing fertilizer brand image and nutrient labeling.

Sealing method:
After filling, sealing can be performed according to customer requirements using either stitch-sealing (with an additional sealing strip or liner), heat-sealing (requiring a high-barrier inner pouch), ultrasonic sealing (which leaves no needle holes and offers excellent leak-proof performance), or tie-sealing (suitable for small packages).

Applicable filling method:
Compatible with screw fillers, impeller fillers, pneumatic fillers, gravity fillers, trough-belt fillers, and manual filling (for semi-automatic or small-batch production lines).

Tensile strength:
Testing has confirmed that the tensile strength reaches ≥700 N/50 mm, fully meeting the requirements for stacking loads of 10 to 50 kg and for long-distance transportation.

Moisture resistance:
The water vapor transmission rate is reduced by more than 95% in a multilayer structure consisting of kraft paper, woven fabric, and a high-barrier inner pouch, effectively preventing fertilizer from becoming damp and caked, losing nutrients, or molding and deteriorating, with a shelf life of over 12 months. An aluminum foil layer can be optionally added to reduce the water vapor transmission rate by more than 98%, making this packaging suitable for high-end fertilizer varieties—such as water-soluble fertilizers and bio-organic fertilizers—that have extremely stringent moisture-proof requirements.

Corrosion resistance grade:
Meeting five-star standards, this packaging exhibits exceptional resistance to acidic and alkaline components, salts, urea, sulfides, chlorides, and various additives in fertilizers, ensuring that it remains intact—without softening, becoming brittle and cracking, or leaking—even after prolonged contact with fertilizer.

Packaging drop test:
Under a 50 kg load condition, following a 1.2-meter free-fall test, the product remained intact and showed no leakage on all six drop faces.

Printing standards:
Solvent-resistant inks are used, providing excellent chemical resistance. Barcode and QR code scanning achieves a 100% recognition rate, supporting product traceability, fertilizer application guidance inquiries, and anti-counterfeiting verification. Nutrient content tables (N-P-K ratios) can be printed in compliance with regulatory requirements.

Customization Scope:
Supports multi-color overprinting, enabling the printing of brand logos, product names, nutrient content tables (N-P-K ratios), organic matter content, net content, implementation standard numbers, fertilizer registration certificate numbers, production license numbers, production dates and batch numbers (with designated areas for inkjet coding), shelf lives, application instructions, fertilization recommendations, precautions, names and addresses of manufacturing enterprises, and other relevant information. It also allows for the addition of warning labels (such as “Moisture-Proof,” “Sunlight-Resistant,” “Do Not Store with Seeds,” “Keep Out of Reach of Children,” and “Not for Chlorine-Sensitive Crops”), as well as barcode and QR code areas,预留 areas for anti-counterfeiting labels, measurement markings (e.g., 25 kg, 40 kg, and 50 kg scale lines), environmental recycling symbols, and SKULL hazard symbols (for nitrate-based fertilizers or flammable formulations).

Environmental Compliance:
The product is manufactured using virgin materials; the kraft paper layer is partially biodegradable, while the woven fabric and barrier layer are recyclable. We can provide hazardous-materials packaging export certification (UN certification, applicable to hazardous goods such as nitrate fertilizers) to ensure compliance with the relevant packaging regulations of the destination port.

Packaging specifications:
All specifications can be customized to meet customer requirements, including bag fill weight (common range: 10 kg to 50 kg; typical sizes: 10 kg, 15 kg, 20 kg, 25 kg, 40 kg, and 50 kg), bag dimensions (length × width), bag style (flat-bottom bag or M-seal bag), sealing method (sewn bottom, heat-sealed bottom, or ultrasonic sealing), inner-bag material (PE barrier film or aluminum foil), number of inner-bag layers (single-layer or double-layer), kraft paper basis weight (commonly 80 g/m² to 120 g/m²), and printing area (single-sided, double-sided, or full-color), among others.

Applicable to:
This product is suitable for manufacturers of compound fertilizers, organic fertilizers, bio-organic fertilizers, controlled- and slow-release fertilizers, water-soluble fertilizers, blended (BB) fertilizers, urea, potash, and phosphate fertilizers, nitro-fertilizers, humic acid and amino acid fertilizers, micronutrient and mesoelement fertilizers, as well as fertilizer exporters.

Price and Minimum Order Quantity:
Specific pricing and minimum order quantities are negotiable. Please feel free to call or write for a quotation.