Essential Guide to Valve Bags: Key Features and Benefits

2025-11-07

1. Production Efficiency Innovation: Full-process Cost Reduction Logic from Filling to Warehousing

Automation Adaptation Advantage: The valve design is compatible with gravity/screw-type filling machines, with a single Bag filling time of ≤ 3 seconds, which is 60% shorter than that ofopen-mouth bags. One production line can reduce 2-3 manual workers. Heat sealing/ultrasonic sealing technology replaces traditional glue sealing, which not only reduces costs but also improves sealing performance.

Warehouse Space Optimization: The square-bottom structure increases stacking stability by 40%. A 50kg PP valve bag can be stacked up to 8 layers. Combined with the anti-slip pattern design of PE bags, the warehouse utilization rate is increased by 25%.

Industry Data Support: The annual production capacity of automated production lines in leading enterprises reaches 426,000 tons, which is 11.3% higher than that of manual lines. The packaging efficiency of export-oriented enterprises has been significantly improved after adoption.

Sealing and Anti-damage Performance: The self-closing valve combined with a multi-layer material structure results in a powder material leakage rate of < 0.1%, which is 90% lower than that of traditional bags. The moisture resistance of PE Valve Bags is increased by 3 times, extending the shelf life of chemical raw materials by 6 months. Paper-plastic composite bags are resistant to chemical corrosion and suitable for hazardous chemical packaging.

Cleanliness and Compliance Guarantee: The fully enclosed valve reduces dust pollution, meets food-grade packaging standards, and is suitable for sensitive materials such as flour and coffee. The proportion of products that have passed ISO 9001 certification exceeds 70%.

Structural Strength Support: The load-bearing test of PP valve bags reaches 120kg. Multi-wall kraft paper bags are suitable for heavy powders such as cement, with a breakage rate controlled below 0.3%.

Multi-material Advantage Matrix: PP bags are anti-static and breathable, suitable for chemical fertilizers and plastic raw materials; PE bags have excellent printability and are recyclable, making them suitable for cross-border logistics; paper-plastic composite bags balance strength and environmental protection, and have become the first choice in the construction material industry.

Customized Solutions: It supports size customization of 180-750mm, provides 8-color printing and handle design. The special structure of Top-valve bags enables rain-proof outdoor storage, meeting the needs of export enterprises.

Green Transformation Value: The blending ratio of recycled materials reaches 27.4%, reducing costs by 18%, which is in line with the 2025 policy of 65% recycling rate. The closed-loop recycling system case has been implemented in enterprises in Jiangsu Province.