ZSYAN SY-WDJ2500 Inclined Mesh Bag Machine with Anti-Bruising Slide
1. Quick Answer & Overview
Overview & Quick Answer: The ZSYAN SY-WDJ2500 inclined
mesh bag packaging machine is a specialized gentle-handling bagging system built to eliminate impact bruising on tender fruits such as navel oranges, lemons, mandarins, and apples during automated net packaging. Featuring a proprietary 45-degree angled gravity slide paired with food-grade silicone cushioning baffles, the machine packages at 20 to 38 bags per minute across a 250g to 2500g capacity range. Integrated with automated mesh indexing, continuous electronic scale communication, thermal wine-glass tag insertion, and pneumatic dual galvanized iron wire clip closures, the system maintains product skin bruising below 0.1% while holding bag length tolerances to ±12mm. Fabricated in complete AISI 304 stainless steel with 2.2 kW power draw and 0.6 MPa air demand, it recovers total capital investment within 2.5 to 3.8 operating months by preventing fruit downgrades.
2. System Architecture & Workflow
The engineering flow diagram below maps the continuous sequence of automated operations—from infeed metering to final hermetic discharge:
[Electronic Fruit Sorting & Sizing Line]
│
▼
[Multi-Head Fruit Weigher with Padded Buckets]
│
▼
[45-Degree Inclined Low-Velocity Deceleration Chute]
│
▼
[Silicone-Lined Tubular Mesh Forming Sleeve]
│
▼
[Pneumatic Bottom Wire Clip Swaging & Label Feed]
│
▼
[Synchronized Incline Gravity Roll-In Fruit Loading]
│
▼
[Top Mesh Necking & Dual Clip Swaging Cutoff]
│
▼
[Curved Soft-Catch Exit Roller Conveyor]
Unlike traditional vertical free-fall systems that drop fruit from heights over 800mm, the 45-degree inclined architecture causes round fruits to roll gently under controlled kinetic friction. The silicone-damped deceleration path reduces fruit landing shock by 85%, ensuring delicate rinds remain pristine for export markets where surface blemishes result in severe price discounting.
---
3. Technical Specifications Matrix
Direct horizontal engineering benchmark comparing ZSYAN equipment against conventional machinery and manual packaging:
| Performance Parameters | ZSYAN SY-WDJ2500 (45° Incline) | Traditional Vertical Drop Bagger | Manual Net Bagging Table |
|---|
| Fruit Infeed Mechanism | 45° cushioned continuous roll slide | 90° vertical free-fall drop | Manual hand placement |
| Packaging Rate | 20 – 38 bags/min (continuous servo) | 18 – 30 bags/min | 6 – 10 bags/min per operator |
| Dosing Range | 250g – 2,500g (1 to 10 fruits/bag) | 500g – 5,000g | Irregular / visually checked |
| Skin Bruising / Defect Rate | < 0.1% (export grade preserved) | 1.8% – 3.5% (micro-bruising) | 1.2% – 2.0% (compression shock) |
| Bag Closure Technology | Continuous galvanized iron wire clip (SMC) | Pre-tied clipping / heat-stitch | Manual wire twister / plastic ring |
| Pneumatic Requirements | 0.6 MPa, 0.28 m³/min | 0.65 MPa, 0.40 m³/min | N/A (manual) |
| Power Consumption | 2.2 kW, 220V 50/60Hz 1-Phase | 3.0 kW, 380V 3-Phase | 0.4 kW (take-away belt) |
| Machine Footprint | 1,850 × 1,300 × 1,950 mm | 1,450 × 1,200 × 2,350 mm | 3,000 × 1,500 mm |
| FOB Investment Range | USD $12,800 – $17,500 | USD $11,000 – $15,000 | USD $3,000 (manual stands) |
4. Mathematical ROI & Payback
Financial payback model quantifying direct labor reduction, material optimization, and overfill elimination:
Direct Annual Net Savings (S) = [Fruit Bruise Prevention] + [Labor Reduction] + [Material Efficiency]
Where:
- Bruise Prevention: 2.5% bruising eliminated on 1,500 metric tons of export oranges ($1.20/kg wholesale value) = $45,000
- Labor Reduction: 2 manual packers replaced × $15,000 annual labor cost = $30,000
- Material Efficiency: Automated mesh tension control saving 10% netting = $4,200
Total Annual Net Economic Benefit (S) = $79,200 USD
Machine Purchase Capital Expenditure (Capex) = $16,500 USD
Payback Horizon = (Capex / S) × 12 Months
= ($16,500 / $79,200) × 12 = 2.50 Months
In commercial citrus packing facilities, eliminating post-harvest transit rot and bruising claims represents a major revenue safeguard. The machine amortizes fully in exactly 2.5 operational months, or roughly 75 days of citrus harvest processing.
---
5. Engineering FAQs
Practical technical answers addressed to plant managers, automation engineers, and procurement directors (Click to expand technical response):
Vertical baggers create vertical kinetic energy drops that cause essential oil cell rupture in citrus peels and subcutaneous bruising in apples. The ZSYAN 45-degree angle transforms free fall into rolling friction. The fruits roll smoothly along the food-grade silicone slide at a controlled velocity of less than 0.4 m/s, landing against an elastomeric buffer that prevents internal bruising and subsequent post-pack rot.
The forming tube is manufactured with an oblong flared mouth and an adjustable lateral spring collar. When paired with multi-head fruit combinational weighers, the software dynamically adjusts the bag pull length based on real-time fruit batch volume calculations, ensuring tight, aesthetically pleasing bags whether packing 60mm lemons or 95mm large navel oranges.
The unit features an integrated label indexer accommodating standard punched thermal wine-glass labels, clipped banner tags, or continuous custom-printed ribbon tape. The label is clamped automatically into the top galvanized wire closure, presenting clear barcode readability, origin branding, and net weight tracking without requiring separate labeling machinery.
All product contact surfaces are constructed of electropolished AISI 304 stainless steel with removable silicone liners. The infeed chute and forming collar feature quick-release clamp fittings that allow washdown and sanitation in under 10 minutes without hand tools, preventing the buildup of natural citrus terpenes and post-harvest fungicides.
The clipping assembly is fully enclosed behind transparent Lexan safety doors equipped with magnetic interlock sensors (CE standard). If any inspection cover is opened during operation, the pneumatic air dump valve depressurizes the clipping cylinders within 0.05 seconds and halts the drive motors immediately, preventing pinch injuries.
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.
