Auto Liquid Filter Bag Welding Line

— From Manual Labor to Precision Automation —

Our Auto Liquid Filter Bag Welding Line is a high-efficiency, fully automated solution designed for the demanding needs of the liquid filtration industry. By replacing labor-intensive manual cutting and welding methods, this system significantly reduces labor requirements, boosts output, and ensures stable, high-quality results — all while adapting to various bag designs, materials, and production layouts.

🔧 Traditional Process: Fragmented and Labor-Intensive

Traditional manufacturing of liquid filter bags involves three separate welding stations, each heavily dependent on manual operation:

• Station 1: Bag Body Welding

• Manual or semi-auto material feeding

• Hot air welding performed manually

• Weld quality depends on operator skill

• Station 2: Bottom Disc Welding

• Manual placement and ultrasonic welding

• One machine per operator

• High-volume output requires 8+ machines and workers

• Station 3: Cuff + Ring Welding

• Manual loading of PP or PE ring, alignment, and welding

• Requires 8+ operators to maintain production

• Prone to inconsistencies and ergonomic fatigue

🔺 Total Labor Required: Typically 15 full-time workers, and for high-output demands, 25+ workers are often needed just for welding operations

🔺 Cutting is also manual — using templates and electric scissors, time-consuming and error-prone.

🚀 Our Solution: Smart Automation in Two Core Modules

We transform this multi-step, labor-heavy process into two streamlined, high-efficiency modules, with only 1 operator per module.

✅ Module 1: Automated Hot Air Welding + Precision Cutting

• Uses the most stable hot air welding method, eliminating cold welds, de-bonding, or plasticization issues.

• Fully automates unwinding, welding, and servo-controlled cut-to-length.

• Ensures consistent weld strength and seam accuracy across all batches.

• Designed for long-term durability and minimal adjustment.

• ✅ Output: 10–12 bags/minute = 2,000–2,200 bags/shift

• ✅ Operator Requirement: 1 person

✅ Module 2: Three-Station Cuff + Ring Ultrasonic Welding

• Fully automates PP/PE ring loading, cuff positioning, and dual ultrasonic welding.

• Uses a high-performance ultrasonic welding system with dual-mode control:

  • Energy Mode: Measures energy delivered in each weld

  • Time Mode: Ensures consistent welding duration

• Built-in energy output monitoring detects over/under-welding in real-time.

• Achieves strong, consistent welds — regardless of material or operator experience.

• ✅ Operator Requirement: 1 person

🛠️ Technology Highlights at a Glance

Traditional vs. Automated Comparison

🌍 Industries We Serve

• Industrial Liquid Filtration – Cement, steel, chemical, and mining

• Food & Beverage – Dairy, wine, edible oils

• Pharmaceuticals & Biotech – Sterile liquid filtration

• Water Treatment & Environmental – Wastewater, sludge, clean water systems

✅ Why Choose Our Automated Line?

• Cut labor by 60–80%

• Double or triple your output

• Ensure consistent weld quality

• Reduce scrap, rework, and operator fatigue

• Adapt quickly to different bag specs and order sizes

• Shorten ROI cycle through improved efficiency

📩 Ready to Upgrade Your Production?

With our Auto Liquid Filter Bag Welding Line, you’re not just adopting automation — you’re unlocking a competitive edge in filtration manufacturing.

👉 Contact us today for a custom quote, demo video, or production line layout consultation.