Introduction to the Vormek TrayFlow VES-500
In industrial packaging processes, every second counts, and every point of human contact with the product represents a potential risk. Automatic tray sealers are designed to deliver speed, precision, and hygiene simultaneously—but before the product can be placed into the container, the container itself must be positioned on the machine with the same precision and without human intervention.
The TrayFlow VES-500 is a carefully engineered response to a daily production line need—a solution rooted not in complexity, but in the simplicity of sound design. This pneumatic denesting machine separates nested containers, positions them with precision onto the tray sealer’s infeed, and does so at a speed perfectly synchronized with the production line—without stoppage, without contamination, without error.
Introducing the Technology
The TrayFlow VES-500 is installed at the infeed of the automatic tray sealer and is responsible for separating nested containers and transferring them onto the tray sealer’s infeed surface. The machine consists of two primary systems:
1. Two-Row Pneumatic Cylinder System
For each container in each cycle, there are four pneumatic cylinders—two on each side of the container, arranged in pairs (upper and lower):
- Upper cylinders are equipped with mechanical fingers that grip the rim of the second-to-bottom container, preventing the entire stack from falling.
- Lower cylinders also have fingers that hold the bottom container in place so the suction cups can grasp it properly.
The machine’s cavity count matches the tray sealer mold cavity count. For example:
- A 2-cavity tray sealer → 8 pneumatic cylinders
- A 3-cavity tray sealer → 12 pneumatic cylinders
2. Venturi and Suction Cup System
Each suction cup has an independent Venturi nozzle. Compressed air directed through the Venturi creates a vacuum, allowing the suction cup to grip the container’s bottom. This mechanism generates the required vacuum using the plant’s existing compressed air network—no separate vacuum pump is needed.
3. Quick Changeover Tooling
Since the automatic tray sealer is adjustable for different container sizes, the denester must offer similar flexibility. The tooling is easily interchangeable. When container shape or dimensions change, operators can install the appropriate tooling in minimal time.
4. Durable, Washable Materials
The main body is constructed from stainless steel and is fully washable. Tooling components and certain internal parts are manufactured from aluminum alloy with protective coating, offering:
- Resistance to industrial cleaning agents
- Safe contact with food products (no corrosion or degradation)
- Corrosion resistance in humid environments
These features make the machine ideal for food industry applications with strict hygiene standards.
Common Industry Challenges
In traditional packaging lines, manual denesting presents serious challenges:
| Challenge | Description |
|---|---|
| Microbial contamination | Operator hands come into direct contact with the container interior—the surface that will contact the product |
| Inconsistent speed | Operators cannot maintain consistent speed synchronized with an automatic line |
| High labor costs | High-capacity lines typically require multiple operators for denesting |
| Inconsistent placement | Crooked or misaligned containers cause sealing defects, waste, or line stoppages |
| Limited scalability | Manual denesting speed cannot be easily increased with production capacity |
Solutions Provided by the TrayFlow
The TrayFlow VES-500 simultaneously addresses all of these challenges through a precise mechanical approach.
Machine Operating Cycle:
| Step | Operation |
|---|---|
| 1. Holding the container stack | Container stacks are loaded into the magazines. Upper cylinder fingers grip the rim of the second-to-bottom container, holding the stack in place. |
| 2. Releasing one container | Upper cylinders open by one step. The bottom container drops under its own weight onto the lower cylinder fingers. Upper cylinders then close again, gripping the rim of the next container above. |
| 3. Separation and pickup by suction cups | The suction cup mechanism rises from below. Compressed air flows through the Venturi, creating vacuum, and the suction cup grips the container bottom. Lower cylinders open, releasing the container. The mechanism separates the container from the stack and transfers it onto the tray sealer infeed. |
| 4. Next cycle preparation | Lower cylinders close again, and the system is ready for the next cycle. |
Technical and Economic Benefits
| Category | Benefit | Description |
|---|---|---|
| Hygienic | Complete elimination of human contact | No hands touch the container—from loading to tray sealer infeed |
| Reduced microbial load | Suitable for sensitive products | |
| Technical | Speed synchronized with line | Matches tray sealer speed automatically |
| Mechanical precision and consistency | Every container is delivered at the same angle and position | |
| Flexibility for product variety | Quick tooling changeover for different container sizes | |
| Economic | Reduced labor | Eliminates 2–4 operators from the denesting process |
| Fast ROI | Typically 12–24 months | |
| Structural | Durable, washable materials | Stainless steel body; coated aluminum alloy components |
Impact on Productivity and Quality
From a production manager’s perspective, key productivity indicators include throughput, downtime, consistency, and space utilization. The TrayFlow VES-500:
- Eliminates the manual denesting bottleneck
- Reduces downtime from human error to near zero
- Improves Overall Equipment Effectiveness (OEE)
- Reduces final product microbial load
- Lowers the risk of product returns or recalls
Results: Measurable speed increase per shift, elimination of human error, improved packaging consistency, and enhanced hygiene standards.
Comparison with Conventional Technologies
| Criteria | Manual Denesting | TrayFlow VES-500 |
|---|---|---|
| Human contact with containers | High | Zero |
| Delivery consistency | Low | High |
| Speed | Limited | Synchronized with tray sealer |
| Tooling changeover | — | Fast and easy |
| Annual operating cost | High | Low |
| Suitable for sensitive industries | No | Yes |
| Washable | — | Fully |
Suitable Industries
The TrayFlow VES-500 is applicable to any industry that places containers onto packaging lines before filling:
| Industry | Example Products |
|---|---|
| Food | Salads, ready meals, soups, pastes |
| Protein products | Red meat, poultry, fish, seafood |
| Dairy | Small yogurt containers, cream cheese, desserts |
| Pharmaceutical | Sterile or semi-sterile container products |
| Agricultural | Ready-to-eat fruits and vegetables |
Conclusion
The TrayFlow VES-500 represents an engineered, mature, and thoughtful approach to one of the most common weaknesses in packaging lines. By combining a two-row pneumatic cylinder system, Venturi-suction cup mechanism, quick-change tooling, and fully washable stainless steel construction, this machine achieves hygiene, speed, and precision standards that manual denesting simply cannot match.
For production facilities seeking to reduce operating costs, improve hygiene standards, and increase production capacity without adding labor, the TrayFlow VES-500 is a technical investment with real, measurable returns.
Frequently Asked Questions
1. Is this machine compatible with all tray sealer models?
It is specifically designed for Vormek tray sealers, with cavity count matching the tray sealer mold. For other brands, technical compatibility must be verified.
2. Can the machine be adjusted for different container sizes?
Yes. The tooling is quick-change. Operators can install the appropriate tooling for the new container in a reasonable timeframe.
3. What happens when the magazine runs out of containers?
The operator must reload the magazine with new container stacks. During this time, the line can continue using containers already on the infeed.
4. Does this system require a separate vacuum pump?
No. The Venturi system uses compressed air from the plant’s existing pneumatic network to generate vacuum.
5. Is the machine washable in wet conditions with strong cleaning agents?
Yes. The stainless steel body and coated aluminum alloy components resist industrial cleaning agents and moisture.
6. Are spare parts readily available?
Yes. As the manufacturer, Vormek provides full technical support and spare parts supply. The modular design also simplifies servicing and component replacement.
