SY-WDJ-DR / SY-TWJ Double-Roll Film Mesh Bag Packaging Machine
The ZSYAN SY-WDJ-DR (SY-TWJ) Double-Roll Film Mesh Bag Packaging Machine is a high-speed continuous packaging solution featuring a motorized dual-mandrel turret for non-stop roll changeovers. Packing produce from 500g to 5000g at speeds of 25 to 42 bags per minute, it eliminates 45 minutes of daily stoppage by pre-loading a standby tubular net roll that indexes into position in under 2 minutes. Combined with branded PE film banner heat-sealing and continuous coiled galvanized iron wire U-clipping (saving >45% consumable costs), it is engineered for high-throughput onion, potato, and citrus packhouses requiring non-stop 24/7 reliability.
Engineering Advantages & Technical Highlights
Precision-machined in Zhongshan, Guangdong with industrial-grade European standard electrical components.
Dual-Mandrel Turret (Zero Production Interruption)
Houses active and standby mesh rolls simultaneously on a motorized carousel. When the active sleeve ends, optical sensors trigger 180° indexing in under 120 seconds.
Branded Film Ribbon & U-Clip Integration
Simultaneously pulls printable brand film ribbon and tubular mesh netting, clinched with online coiled galvanized wire staples for high-impact supermarket shelf presence.
Continuous 24/7 Industrial SUS304 Chassis
Electropolished stainless steel construction with dust-sealed servo drives and waterproof bearings withstands agricultural dirt and moisture.
Technical Specifications Matrix (EAV Model)
Standardized factory specifications. Custom voltages (110V/220V/380V/480V 50-60Hz) and conveyor integration available.
| Parameter / Specification | SY-TWJ2500 (1–2.5 kg) | SY-TWJ5000 (2.5–5 kg) |
|---|---|---|
| Packaging Capacity Range | 500g – 2,500g | 1,000g – 5,000g |
| Packing Speed Output | 28 – 42 bags/min | 25 – 36 bags/min |
| Mesh Roll Architecture | Motorized Dual Rotary Turret | Motorized Dual Rotary Turret |
| Roll Changeover Downtime | < 2 minutes (standby pre-loaded) | < 2 minutes (standby pre-loaded) |
| Closure Method | Continuous Galvanized Iron Wire U-Clip | Continuous Galvanized Iron Wire U-Clip |
| Forming Tube Diameter | 150 mm / 190 mm interchangeable | 190 mm / 220 mm interchangeable |
| Power & Air Consumption | 3-Phase 380V, 3.5 kW; 0.65 MPa | 3-Phase 380V, 4.2 kW; 0.65 MPa |
| Machine Dimensions & Weight | 1850 × 1450 × 2350 mm / ~650 kg | 1950 × 1550 × 2450 mm / ~720 kg |
Material Suitability & Application Boundaries
Our engineering laboratory verifies physical handling tolerances to prevent jamming, breakage, or product degradation.
✅ Factory-Verified Ideal Applications
- Commercial Allium Packing: Yellow onions, red onions, garlic bulk net bags (1kg – 5kg).
- Root & Tuber Produce: Washed potatoes, sweet potatoes, beetroots, rutabagas.
- Citrus & Hard Fruit: Oranges, grapefruits, lemons, mandarins in breathable branded bags.
❌ Unsuitable Products & Alternative Systems
- Soft Delicate Fruits: Strawberries, ripe peaches (use shallow fruit punnets or flow wrap).
- Micro Granules Smaller than Mesh Aperture: Small cherry tomatoes or loose peas (use VFFS film pouches).
Turnkey Packaging Line Integration Workflow
Seamlessly pair with upstream feeding and downstream end-of-line case packing equipment.
Infeed Weigher Discharge
Combination weigher releases batched produce down stainless centering chute.
Dual-Mandrel Turret Netting
Produce drops through active mandrel into continuous tubular mesh sleeve.
Branded Film Pull
Servo film transport pulls customized brand ribbon along netting seam.
Pneumatic U-Clip Swaging
Continuous coiled galvanized wire punches and folds dual U-clips online.
Thermal Cutoff & Take-Away
Sealed mesh bag drops gently onto padded takeaway conveyor.
Frequently Asked Questions (FAQ)
Direct answers from our senior packaging machinery engineering team.
Q How much downtime does the double-roll system actually save?
Conventional single-roll baggers require 12-18 minutes per mesh roll swap. Packing 15,000 bags/day requires 3-4 roll swaps, losing 45-60 minutes daily. The double-roll turret reduces this to under 2 minutes per swap, recovering 40+ productive minutes per shift.
Q Can it run with pre-printed brand film labels?
Yes. The machine includes a synchronized optical print-mark sensor that registers the brand logo and barcode on the center film band precisely on every bag.