Description
STvega Tray Sealer Automatic L450G / L750G Automatic Traysealers are specialized industrial conveyor-type equipment. They are designed for hermetically sealing plastic trays with heat-sealing film while creating a modified gas medium (MAPS). This series of devices is designed specifically for packaging fresh products that do not require preliminary deep vacuuming, but require a protective atmosphere to significantly extend the shelf life. The equipment is the optimal solution for packaging lines for fresh herbs, salad mixes, berries, mushrooms and finished culinary products.
The machines provide a continuous automatic cycle, including precise positioning of trays on the die, replacement of the internal air environment of the container with a shielding gas, contour welding of the film with high precision trimming and output of finished products to the receiving conveyor.
Principle of operation:
The technological process of forming a modified medium is based on a highly efficient technology of vortex air substitution. The trays filled with the product are automatically moved by the conveyor and fixed in the working area of the die. Immediately before the moment of thermal welding, a continuous vortex stream of preservative gas (nitrogen, carbon dioxide or a specialized mixture thereof) is supplied to the chamber under pressure. This flow, due to directional aerodynamics, instantly displaces atmospheric air and free oxygen from the volume of the tray.
Immediately after reaching the required gas concentration, the heating plate is lowered, which carries out hermetic sealing and contour trimming of the film around the perimeter of the container. The entire cycle takes place at high speed without creating excessive pressure on the delicate product, after which the packaged trays are removed from the machine, and the spent film tape is automatically wound onto the collection shaft.
Equipment advantages:
- The use of vortex air substitution technology allows you to achieve a high packaging speed without the risk of deformation of light or porous products.
- The working matrices are made of thick-walled anodized aluminum alloy grade 6061 with a reliable industrial Teflon coating of the heating plates to completely eliminate the adhesion of the film.
- The automation equipment is equipped with components from world industry leaders, including Airtac pneumatic cylinders and solenoid valves, as well as Schneider Electric relays, switches and switchgear.
- Process control is carried out through a touch panel based on the Xinje industrial controller with the ability to remotely adjust the parameters.
- The structural design of frame elements, support frame and protective skin made of SUS 304 stainless steel with additional stiffeners guarantees the mechanical stability of the complex and its compliance with the sanitary and hygienic requirements of the food industry.
formation technology
| Specifications | L450G | L750G |
| Overall dimensions, mm | 2180*755*1600 | 2180*1055*1600 |
| Max. tray size, mm | 260*170*80 | 300*140*80 |
| Max. width of film roll, mm | 450 | 750 |
| Max. diameter of film roll, mm | 280 | 260 |
| MGS | Vortex substitution | Vortex substitution |
| Gas substitution coefficient, % | ≥ 99 | ≥ 99 |
| Gas mixing accuracy, % | ± 2 | ± 2 |
| Capacity, trays/hour | 600 – 700 (2 per cycle) | 1200 – 1500 (4 per cycle) |
| Duty cycle duration, s | 10 | 7,5 |
| Working pressure of the pneumatic system, MPa | 0,6 – 0,8 | 0,6 – 0,8 |
| Installed power, kW | 3 | 4 |
| Supply voltage, V / Hz | 230 / 50 | 230 / 50 |
| Equipment weight, kg | 380 | 680 |
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