Automatic shrink wrapping machine – SH-77 – SHJLPACK – for heat-shrink films

The SH-77 is an advanced automatic shrink wrapping machine engineered by SHJLPACK. This integrated system efficiently performs both the hooding and heat-shrinking processes for products requiring protective film packaging, all within a single, streamlined workstation. It is specifically designed for use with heat-shrink tubular film, typically featuring side bellows for optimal fit and coverage.

Utilizing heat-shrinkable tubular film from a coil (with the capability to handle up to three film reels in various configurations), the SH-77 automates the entire packaging sequence. The machine employs a sophisticated gas-powered ring oven to effectively shrink the film tightly around the product. A central PLC (Programmable Logic Controller) system oversees and manages all automatic and manual operations, ensuring precise control and repeatability.

The packaging cycle is intelligently synchronized, combining three distinct phases – tubular bag preparation, product hooding, and film shrinking – into one continuous process. This design significantly minimizes downtime between operations, leading to high levels of productivity. Notably, critical phases such as film preparation are often performed concurrently with other parts of the cycle or during the product loading sequence, ensuring they do not add to the overall machine cycle time.

The SH-77 incorporates several design features aimed at maximizing performance, efficiency, and the quality of the final packaging:

- **Integrated Hooding and Shrinking:** A single workstation handles both processes, simplifying the machine footprint and workflow.
- **Automatic Operation:** Fully automatic control managed by a PLC system minimizes the need for operator intervention during the cycle.
- **Film Handling Flexibility:** Compatible with heat-shrink tubular film with side bellows, with multi-reel options available.
- **Efficient Shrinking:** Uses a gas-powered ring oven for reliable and consistent heat application.
- **Optimized Cycle Synchronization:** Preparation, hooding, and shrinking phases are combined and synchronized to reduce non-productive time and boost throughput.
- **Inflation-Assisted Hooding:** An integrated inflation system on the clamps aids in smoothly applying the film hood onto the product or pallet.
- **Separated Shrinking Arch:** Positioning the shrinking arch separately from the hooding unit allows for optimal film position and controlled shrinking duration, crucial for secure attachment at the base.
- **Base Film Attachment:** Clamps with inward overturning capability facilitate effective film shrinkage and adherence at the very bottom of the package or pallet, enhancing load stability.

#### Technical Specifications Summary

- **Operational Mode:** Automatic
- **Film Type:** Heat-shrink tubular film (with side bellows)
- **Shrinking Method:** Gas-powered ring oven
- **Control System:** PLC (Programmable Logic Controller)
- **Film Reel Capacity:** Up to 3 reels (depending on configuration)