Flat-mouth color-printed non-woven agricultural and fertilizer/feed woven packaging bags
Applicable materials: fertilizers, feed, and other compatible materials
Key advantages: cost-effective, economical design; leak‑proof and dust‑proof to minimize material loss; square bottom for more stable stacking and space efficiency; robust, durable construction resistant to impacts; compatible with mainstream filling methods; customizable options to meet brand requirements.
Packaging specifications: customizable (weight, dimensions, sealing)
Pricing and minimum order quantity: negotiable—please inquire for details.
Category:
Description:
I. Product Overview
This flat‑bottom, color‑printed nonwoven woven bag is specially designed for granular and powdered materials such as agricultural inputs and livestock feed. It features a polypropylene (PP) woven base combined with a nonwoven composite process, complemented by a green‑themed color print. Balancing durability, environmental sustainability, and brand visibility, it offers a highly cost‑effective, versatile packaging solution.
II. Scope of Application
- Applicable Materials : Organic fertilizers, compound fertilizers, chemical fertilizers, urea, livestock and poultry feed, aquaculture feed, premixes, granular additives, and other agricultural and feed products.
- Applicable Scenarios : Factory automation for filling, warehousing and palletizing, long-distance transportation, and end‑point retail—particularly well suited to the distribution of agricultural inputs.
- Filling method : Supports automatic, semi-automatic, and manual filling at the bottom-valve opening, and is compatible with mainstream filling equipment used in the agricultural inputs and feed industries.
III. Core Advantages
- Automatic filling with a square-bottom valve opening—efficiency at its peak.
- The square-bottom design, combined with a valve‑type opening, enables direct connection to automated filling lines. During the filling process, no manual sealing is required; once the product is loaded, the internal pressure automatically seals the valve, significantly boosting production efficiency and reducing labor costs.
- Leak-proof and dustproof, with excellent sealing performance.
- The bottom is sealed using heat‑sealing or adhesive bonding, replacing traditional stitched sealing to completely eliminate pinhole‑induced material leakage. The bag body is laminated with nonwoven fabric, effectively preventing dust from escaping, minimizing material loss, and reducing airborne dust pollution during transportation.
- Square-bottom pallets ensure stable stacking, making warehousing and transportation hassle-free.
- After filling, the bag assumes a neat brick‑like shape, making it less likely to tip or roll during stacking. It can be stacked to heights exceeding 5 meters, and compared with conventional round‑bottom flat bags, it boosts warehouse space utilization by 20%–30%, while also being better suited for palletized transport and automated warehousing systems.
- Monochrome printing, economy model, with controllable costs.
- Employing monochrome or basic color printing, this solution ensures clear brand‑logo presentation while significantly reducing printing costs, making it a cost‑effective option for high‑volume packaging. It is well suited to agribusinesses that prioritize cost control and have modest requirements for print complexity.
- Durable material, tough and shatter-resistant.
- Employing a novel composite process that combines PP woven fabric with nonwoven material, this solution balances tensile strength and toughness, effectively accommodating the bumps and drops encountered during the transportation of agricultural inputs and minimizing the risk of bag rupture.
IV. Comparison Table: Square-Bottom Valve Bags vs. Standard Flat Bags
- Filling efficiency : Square-bottom valve bags can be directly connected to automated filling lines, eliminating the need for manual sealing during the filling process. Once filled, the internal material pressure automatically seals the valve opening, boosting overall filling efficiency by more than 50% compared to conventional flat bags. In contrast, most standard flat bags require manual filling and, after filling, necessitate additional sewing or tying of the bag opening—resulting in a cumbersome, time‑consuming process and higher labor costs.
- Leak-proof and dustproof performance : Square-bottom valve bags utilize a heat-sealed bottom‑sealing process and feature a self‑sealing valve opening. With no needle holes caused by traditional stitching, they effectively prevent leakage and dust generation of powdered and granular materials at the source. By contrast, standard flat bags typically rely on sewn bottoms, which can develop powder or material leaks at the stitch points, leading to higher losses due to dust spillage.
- Palletizing stability : After filling, square-bottom valve bags form a neat brick‑like structure that resists tipping and rolling during palletizing, allowing stacking heights of 5 meters or more; by contrast, ordinary flat bags assume an irregular circular shape when filled, are prone to deformation and collapse, have limited stacking heights, and pose a risk of toppling during storage.
- Warehouse utilization rate : After filling, square-bottom valve bags maintain a neat, stable shape and can be stacked tightly and neatly, increasing warehouse space utilization by 20%–30% compared to conventional flat bags, making them better suited for palletized transport and automated warehousing systems. In contrast, conventional flat bags tend to deform, wasting significant storage space when stacked and complicating batch management.
- Labor costs : Square-bottom valve bags are compatible with automated filling and self-sealing processes, eliminating the need for manual sealing and sorting and significantly reducing labor costs. By contrast, conventional flat bags require dedicated personnel to handle sealing, bag‑body alignment, palletizing adjustments, and other tasks, resulting in higher labor‑cost expenditures.
V. Leak-Proof and Dust-Proof Design Details
- Self-sealing valve port structure : After filling is complete, the internal pressure of the material automatically seals the valve opening, eliminating the need for additional sealing and preventing dust leakage.
- Pinhole-free bottom-sealing process : Heat-sealing or adhesive bonding is used in place of traditional sewing, eliminating needle holes at the bag bottom and completely resolving the issue of powder leakage.
- Bag body composite nonwoven fabric The non-woven fabric is densely woven, effectively blocking fine particulate matter while enhancing the bag’s moisture resistance and reducing the risk of materials absorbing moisture and caking.
- Edge reinforcement treatment : Reinforced edges at the bag opening and bottom to prevent tearing and material leakage caused by friction during filling and transportation.
VI. Material, Manufacturing Process, and Performance Parameters
Material and Craftsmanship
- Base material: New food-grade / industrial-grade PP polypropylene woven fabric (grammage can be adjusted upon request)
- Composite Layer: Nonwoven Fabric Lamination (enhances moisture resistance and dust protection)
- Printing: Monochrome / Basic color printing; customizable with logos, brand information, and product descriptions.
- Process: Square-bottom heat-sealed closure + valve mouth forming, with edge reinforcement.
Core Performance Indicators (refer to GB/T 8946-2013 standard)
- Tensile strength : Standard‑grade fabric: warp ≥ 450 N/50 mm, weft ≥ 400 N/50 mm; high‑strength version customizable to warp ≥ 650 N/50 mm, suitable for heavy‑load transportation.
- Moisture-proof rating : Medium moisture resistance (can be upgraded to a high‑moisture‑resistance grade by adding a PE liner bag upon request, suitable for moisture‑sensitive fertilizers and feeds).
- Drop test : After being loaded with the nominal weight of material, the bag is dropped freely from a height of 1.2 meters in three different orientations; the bag remains intact and no material is lost, thereby meeting the requirements of agricultural‑input transportation scenarios.
- Weather resistance It can operate reliably in temperatures ranging from -20°C to 60°C, making it suitable for warehousing and transportation conditions across various regions.
VII. Packaging Specifications and Customization Scope
Basic Specifications
- Standard compatible weights: 20 kg / 25 kg / 40 kg / 50 kg (customizable to 5–60 kg upon request)
- Bag dimensions: Length, width, and bottom width can be customized according to material density and filling equipment.
- Valve port size: Compatible with standard bores used in mainstream automatic filling equipment; custom non‑standard sizes available.
Customized Services
- Custom Printing: Allows you to add your brand logo, product information, specification details, anti-counterfeiting marks, and more; supports both single-color and multi-color printing.
- Material customization: upgradeable thickened woven fabric, optional PE inner liner, enhanced moisture‑proof rating.
- Customization: Adjustable valve‑port design, bottom‑seal process, and bag‑body strength, tailored to accommodate specialized filling equipment.
- Other customization options: Available in various colors and bag styles, tailored to align with your company’s brand identity.
VIII. Environmental Compliance Statement
- The material is made from recyclable PP polypropylene, which can be reused and recycled, meeting environmental standards.
- The production process strictly adheres to industry‑wide environmental standards, contains no harmful additives, and meets the relevant national limits for heavy metal migration, thereby satisfying the packaging safety requirements for agricultural inputs and feed products.
- Customizable biodegradable options are available, catering to the needs of green agriculture and eco-friendly packaging.
9. Price and Minimum Order Quantity
Negotiable
Keywords:
Flat-mouth color-printed non-woven agricultural and fertilizer/feed woven packaging bags
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CERTIFICATE
20 years of production experience in the packaging woven bag industry
Advantages
We possess large-scale production capabilities, enabling us to handle substantial orders and ensure timely delivery.
Premium Quality
Adhering to strict global benchmarks for unparalleled durability and reliability
Competitive Pricing
World-class products at cost-effective rates for businesses of all sizes
Expert Team
Skilled professionals delivering top-quality results
Custom Solutions
Bespoke products designed to meet your specific needs
Process of Production
Pursuing development through technological innovation, Prioritizing quality in service
1
Making yarn PP
2
Weaving
3
Laminate
4
Printing/Membrane
5
Cutting/Sewing
6
Blown PE
7
Insert PE, Packing
8
Product
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