ZSYAN SY-WDJ5000DS Elongated Fruit & Vegetable Packaging System
1. Quick Answer & Overview
Overview & Quick Answer: The ZSYAN SY-WDJ5000DS strip
mesh bag packaging machine is a specialized automated packaging unit engineered for elongated fresh produce, sweet corn ears, garlic braids, and continuous cucumber netting. Operating at 18 to 32 bags per minute across an extended 200mm to 800mm package length range, the equipment combines an extended vertical forming mandrel with dual-pneumatic galvanized iron wire clipping jaws and longitudinal netting tensioners. Constructed from electropolished AISI 304 stainless steel with Omron PLC automation, the system ensures produce remains strictly aligned vertically within a skin-tight tubular mesh sleeve, eliminating loose product movement during transit. Operating under 0.6 MPa compressed air with 2.5 kW power consumption, it replaces 3 manual bagging operators and recovers full equipment capital expenditure within 2.8 to 4.1 operational months through direct labor and netting material savings.
2. System Architecture & Workflow
The engineering flow diagram below maps the continuous sequence of automated operations—from infeed metering to final hermetic discharge:
[Infeed Incline Belt with Alignment V-Guides]
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[Dual Optical Inspection Sensors for Length Verification]
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[Extended Vertical Forming Mandrel (200-800mm Length Capacity)]
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[Servo-Driven High-Torque Drawdown Timing Belts]
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[Pneumatic Bottom Galvanized Wire Crimp & Header Tag Feed]
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[Gravity Drop of Strip Produce & Elastic Sleeve Hugging]
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[Pneumatic Neck Gathering & Top Galvanized Wire Cutoff]
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[Drop-Retract Soft-Landing Cradle & Output Conveyor]
Long and slender items such as sweet corn with husks or garlic braids present unique packaging challenges: if the netting is too loose, the produce shifts and breaks; if too tight, the husks tear. The SY-WDJ5000DS features a specialized extended mandrel with adjustable circumference collars that create an elastic hugging effect, keeping corn ears tightly bound without bruising.
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3. Technical Specifications Matrix
Direct horizontal engineering benchmark comparing ZSYAN equipment against conventional machinery and manual packaging:
| Performance Parameters | ZSYAN SY-WDJ5000DS | Standard Vertical Mesh Bagger | Manual Net Sleeve Pliers Bench |
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| Forming Mandrel Length | 900 mm (supports up to 800mm bags) | Max 350 mm (standard bulb crop) | Variable manual stuffing |
| Packaging Rate | 18 – 32 bags/min (continuous cycle) | 12 – 16 bags/min (tail snagging) | 4 – 6 bags/min per operator |
| Package Length Range | 200 mm – 800 mm (continuously set) | 100 mm – 350 mm | Irregular / inconsistent |
| Produce Alignment Defect | < 0.2% (snug longitudinal fit) | 3.5% – 6.0% (bunching / folding) | 2.0% – 4.0% (manual distortion) |
| Closure Method | Pneumatic dual galvanized iron wire clip | Heat seal / single clip | Hand staple gun / twist tie |
| Pneumatic Requirements | 0.6 MPa, 0.32 m³/min | 0.6 MPa, 0.35 m³/min | Manual / shop air gun |
| Electrical Power | 2.5 kW, 1-Phase 220V 50/60Hz | 2.2 kW, 1-Phase 220V | 0.3 kW (exit table) |
| Machine Dimensions | 1,500 × 1,250 × 2,650 mm | 1,450 × 1,200 × 2,200 mm | 2,800 × 1,200 mm |
| FOB Investment Range | USD $12,000 – $16,500 | USD $11,500 – $15,000 | USD $2,200 (manual rigs) |
4. Mathematical ROI & Payback
Financial payback model quantifying direct labor reduction, material optimization, and overfill elimination:
Direct Annual Net Savings (S) = [Labor Elimination] + [Netting Waste Reduction] + [Productivity Gain]
Where:
- Labor Elimination: 3 manual stretching/clipping workers replaced × $13,500 = $40,500
- Netting Waste: Automated skin-tight tensioning saving 12% mesh sleeve length = $4,800
- Productivity Gain: Extra 300,000 corn ears packed during peak season = $8,500
Total Annual Net Economic Benefit (S) = $53,800 USD
Machine Purchase Capital Expenditure (Capex) = $15,200 USD
Payback Horizon = (Capex / S) × 12 Months
= ($15,200 / $53,800) × 12 = 3.39 Months
In sweet corn and garlic export operations, automated strip bagging eliminates the bottleneck of manual sleeve pulling, allowing single packhouses to process 15,000+ ears daily with single-shift capital payback achieved in 3.4 months.
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5. Engineering FAQs
Practical technical answers addressed to plant managers, automation engineers, and procurement directors (Click to expand technical response):
The mandrel is precision-machined from electropolished seamless AISI 304 tubing and fitted with four longitudinal low-friction polyoxymethylene (POM) guide ribs. These ribs support the netting sleeve, reducing surface friction by 60% and allowing the servo-driven polyurethane drawdown belts to advance extra-long bags without tearing delicate raschel mesh loops.
Yes. The PLC program includes a "Multi-Drop Tandem Mode" specifically designed for packing 2 to 4 sweet corn ears end-to-end or side-by-side. Dual optical reflection sensors detect the passing of each ear, triggering the clipping mechanism only after the complete programmed count has passed through the collar.
The clipping assembly features an active pneumatic air-blast nozzle coupled with mechanical stripping fingers. Immediately prior to the dual galvanized wire jaws closing, the air blast blows trailing corn silks and green leaves upwards into the bag body, while the gathering fingers neck the mesh tightly, ensuring a clean, leak-proof closure free of clamped vegetable debris.
The machine integrates an extended-arm thermal tag indexer. It delivers wine-glass punched tags or header banner labels directly into the throat of the upper clipping jaw, crimping the tag securely into the galvanized iron staple to create a convenient retail hang-tab or barcode identifier.
The galvanized wire feed assembly requires daily inspection to clear wire shavings and monthly lubrication of the eccentric drive bearings. The high-alloy tool steel cut-off blades are reversible, providing two cutting edges with an expected service life of 400,000 cycles per edge before requiring sharpening or replacement.
6. Technical Inquiries & Quotes
Ready to Automate Your Packaging Facility?
Consult directly with ZSYAN factory engineers for custom pouch specifications, line layouts, and direct FOB quotations within 24 hours.
