Introduction
The Eterna EFOLD 1500 / 1700 / 2100 / 2800 / 3200 series are automatic folder gluers engineered specifically for large-format corrugated board, manufactured in Shanghai by Shanghai Eternal Machinery — a member of the Bobst Group. With a maximum belt speed of 240 m/min and the ability to process both single-wall and double-wall flutes (EB/AB), this machine series is well-suited for packaging plants that require high-volume production of large industrial corrugated boxes.
Applications
Compatible materials:
- Corrugated board: F, E, B, C, A, EB, AB flute (including double-wall)
- Card board: 300–800 g/m²
Box styles: Straight-line boxes, Crash-lock bottom boxes, Regular Slotted Containers (RSC)
Typical industries: Consumer electronics, furniture, home appliances, heavy industrial packaging
Key Features
Independent synchronized drive motors: Each section runs on its own dedicated motor — ensuring stable operation at high speed without reliance on a shared mechanical driveshaft.
Heavy-duty wide-format belts: Specially designed for corrugated board — wider, stronger, and built to handle the weight and rigidity of double-wall flute materials.
Linear rail system on all carriers: Enables precise, smooth adjustment across upper and lower carriers — significantly faster job changeover compared to conventional sliding mechanisms.
Self-driving upper carrier + pneumatic pressing: Delivers consistent, reliable pressing force on thick corrugated board — standard on this series, not an optional add-on.
Proprietary “Fish Tail” structure: Addresses common corrugated box defects such as tail warping, misaligned fold edges, and off-position gluing at the trailing end.
Inline Feeder Loader: Connects directly with window patching machines or inspection machines to create a continuous production line and reduce manual handling between stations.
Touchscreen HMI + remote control: Intuitive interface for fast setup and parameter adjustment; remote control comes as standard equipment.
Technical Specifications
General parameters
| Parameter | Value |
|---|---|
| Max. Belt Speed | 240 m/min |
| Jogging Speed | 20 m/min |
| Max. Air Requirement | 0.7 m³/min |
Model comparison
| EFOLD 1500 | EFOLD 1700 | EFOLD 2100 | EFOLD 2800 | EFOLD 3200 | |
|---|---|---|---|---|---|
| Stock Range | |||||
| Card board | 300–800 g/m² | ||||
| Corrugated board | F / E / B / C / A / EB / AB Flute | ||||
| Power System | |||||
| Total Power | 42 kW | 45 kW | |||
| Dimensions | 22 × 2.7 m | 22 × 2.9 m | 22 × 3.6 m | 22 × 4.2 m | 22 × 4.6 m |
| Weight | 14.5 Ton | 15 Ton | 16 Ton | 16.5 Ton | 17.5 Ton |
Who Is This For?
The EFOLD large-format series is suited for mid-to-large scale corrugated packaging plants that regularly process box blanks exceeding 1,350 mm in feed direction — typically for electronics, furniture, and industrial goods packaging. When selecting a model, choose a machine width at least 50–100 mm larger than the maximum blank dimension. Note that all models share a fixed machine length of 22 m; width ranges from 2.7 m to 4.6 m and floor load from 14.5 to 17.5 tons depending on model.
Conclusion
The Eterna EFOLD 1500–3200 is a serious option for packaging plants looking to expand their large-format folding and gluing capability. PTS provides technical consultation, needs assessment, and customized quotations based on your specific production requirements.
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