Efficient Pallet Packaging with the SH-77
The SH-77 automatic hooding machine is designed to streamline the process of protecting palletized goods with shrink film. This innovative system combines the distinct steps of tubular bag preparation, hooding, and heat-shrinking into one synchronized, high-speed cycle. This integrated approach significantly minimizes downtime between operations, ensuring high levels of productivity for your packaging line.
The machine uses a coil of heat-shrinkable tubular film, which can include side bellows for easy opening and application. The system can handle up to three film reels, allowing for quick changeovers and continuous operation.
Integrated Cycle for Optimal Performance
The SH-77's operation is characterized by its unified cycle where tubular bag preparation, hooding, and shrinking are performed efficiently. These preparation phases often occur in parallel with the main cycle or during the entry of a new product, effectively not impacting the overall machine cycle time.
A key feature is the inflation system integrated into the film clamps. This system gently inflates the film bag, facilitating smooth and precise hooding onto the product pallet. Following hooding, the machine progresses to the shrinking phase.
Advanced Shrinking Technology
The heat-shrinking process is carried out by a gas-powered ring oven. The shrinking arch is deliberately separated from the hooding unit. This design allows the hood to remain in the correct position at the base of the pallet for the necessary duration, ensuring perfect film attachment. The clamps also overturn inwards during this phase, contributing to superior film shrinking at the base of the product package.
To enhance energy efficiency and safety, the oven heaters ignite intermittently, only activating when a hooded product is ready for shrinking. The duration of ignition is precisely controlled based on the specific dimensions of the package and the thickness of the film (ranging from 80 to 200 microns). This results in reduced gas consumption, using only the energy required for the actual shrinking time.
Safety is paramount in the SH-77's design. Each individual heater is equipped with an electronic flame control device. If any anomaly is detected, the oven automatically shuts off, and the gas supply is immediately blocked. This prevents potential damage to the package and eliminates the risk of unburned gas escaping. The machine employs a special air vein burner type with a unique combustion air supply that guarantees excellent flame stability, regardless of the gas flow rate.
Technical Specifications
| Specification | Data |
|---|---|
| Suitable Film | Shrinkable polyethylene |
| Film Thickness | 80 - 200 micron* |
| Reel Outside Diameter | Max. 700 mm |
| Internal Reel Diameter | Max. 76 mm |
| Electric Voltage | 400 V trifase – 50 Hz |
| Installed Electrical Power | 5.5 kW |
| Total Thermal Power | 320 kW |
| Burners | 4 burners @ 80,000 kcal./h each |
| Gas Operation | Methane or Propane-GPL |
| Gas Line Pressure | 0.5 Bar |
| Gas Line Flow Rate | 20 m³/h |
| Gas Consumption | Approx. 0.20 - 0.25 m³/cycle |
| Air Pressure | 6 bar |
| Air Consumption / Cycle | 50 NI |
| Noise | ≤ 80 dB(A) according to ISO 11202 |
| Total Weight | 3000 kg |
Note: Optimal performance within specified ranges.
The SH-77 is a versatile packaging solution suitable for a range of industries requiring reliable and efficient pallet protection against environmental factors. Its design prioritizes both high throughput and operational safety.











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