Tray heat sealing machine

ILPRA mod. ILPRA FOODPACK 400 N

Tray Sealing Machine
Model: ILPRA FOODPACK 400 N

(sold together with 5,000 trays and the corresponding sealing film)

Machine for cutting and heat-sealing with metallized film, compatible with pre-formed trays made of plastic, aluminium, and/or laminated cardboard.
Tray dimensions: max. 280 x 32 h mm (in a single row).
Mechanical operating speed: approximately 400 cycles/hour, depending on the type of material used and the characteristics of the product to be packed. Operation with vacuum and inert gas injection at a speed dependent on the vacuum level (4 cycles per minute).

OPERATION AND DESCRIPTION:
The FOODPACK 400N is a practical, robustly constructed machine. The conveyor movement and the unwind–rewind system are mechanically driven, and the sealing plate is pneumatically operated. The machine is controlled by a programmable logic controller (PLC). The construction of the FOODPACK 400N considers the special humidity conditions in the operating area. All parts that come into contact with the product, such as the work surface and housing, are made of stainless steel (S/S).
Switchover to another tray format takes approximately 5 minutes.

MACHINE SECTIONS:
Tray loading section:
The loader consists of guides for the trays (the guides are designed to correctly position the filled trays). After placing the tray in place, the operator advances it into the sealing area by pressing a lever. (A presence sensor permits successive operations only if the tray is correctly positioned.) After the heat-sealing operation, the operator must return the tray holder to the loading position, remove the sealed tray, and load the next tray for subsequent sealing.

Film unwinding and rewinding group:
This group automatically positions the required length of sealing film—drawn from the reel—under the sealing and cutting unit, and rewinds the scrap. This group can be fitted with a date coding device for printing manufacturing/expiry dates. Optionally, a centering device allows for accurate alignment of the printed image in the centre of the metallized film covering the tray.

Sealing and cutting section:
In this group, the film is cut and sealed onto the tray (the cut matches the exact shape of the tray). Once the tray is positioned in the sealing area, the operator presses the START button to carry out the sealing and cutting operation. Both the upper and lower dies are manufactured according to the user-selected tray characteristics, and require a high degree of customization. The sealing plate is electronically timed, and each operation requires individual temperature adjustment. The section is equipped with a quick-change die system: releasing or securing the upper die can be done simply by turning a selector key on the control panel.
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Control panel:
Equipped with a temperature controller for sealing temperature adjustment, a timer for sealing time, and a keypad with display for controlling machine functions, as well as START and EMERGENCY STOP buttons, main switch, and quick die-change selector.

Section sequence:
- Stainless steel (S/S) base.
- Manual loading/unloading station.
- Automatic film unwinding/rewinding system.
- Sealing/cutting station.
- Control panel.

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