Shrink tunnels from STS provide controlled convection heat for producing secure, consistent shrink-film packages. Specifically, six model families offer different chamber widths, heights, and lengths for products ranging from smaller packages to large industrial bundles. Therefore, companies can select a tunnel around their product dimensions, film requirements, and desired production rate.
Variable-speed conveyor controls allow operators to adjust product dwell time inside the heated chamber. In addition, high-low fan controls help manage airflow around different package profiles. As a result, operators gain more control over shrink quality when products or film specifications change.
STS shrink tunnels combine adjustable operation with durable industrial construction. To begin with, a lighted viewing chamber allows operators to monitor packages during the shrink process. Meanwhile, a dual-pane viewing window helps separate operators from the heated chamber.
The automatic cool-down function protects tunnel components during shutdown. Moreover, adjustable legs help align the conveyor with upstream and downstream equipment. Locking casters also provide stability after the machine reaches its operating position.
Standard and available features include:
Six STS model families provide chamber openings from 19 to 42 inches wide and from 12 to 20 inches high. Furthermore, multiple chamber lengths allow buyers to balance floor space, conveyor speed, heat exposure, and production requirements.
| Model Family | Chamber Width | Chamber Height | Available Chamber Lengths |
|---|---|---|---|
| STS 1712 | 19″ | 12″ | 48″, 72″ or 96″ |
| STS 2212 | 24″ | 12″ | 48″, 72″ or 96″ |
| STS 3012 | 32″ | 12″ | 48″, 72″ or 96″ |
| STS 2220 | 24″ | 20″ | 72″ or 96″ |
| STS 3020 | 32″ | 20″ | 72″ or 96″ |
| STS 4020 | 42″ | 20″ | 72″ or 96″ |
These measurements describe the shrink chamber rather than the approved maximum product size. Therefore, users should allow adequate clearance around every package for airflow, conveyor tracking, and product variation.
Electrical requirements also vary significantly by model and chamber length. Consequently, the available voltage, phase, amperage, and installation location should be confirmed before selecting a configuration.
Different products require different conveyor surfaces. For example, lightweight packages may benefit from a Teflon-mesh belt, while heavier or heat-intensive applications may require another configuration.
Available conveyor styles include:
Product weight, contact area, package stability, film type, and desired bottom shrink all affect conveyor selection. Therefore, Ameripak evaluates both the product and its film before recommending a conveyor surface.
Shrink tunnels complete the heating stage of a shrink-packaging system. First, a wrapper or sealer encloses the product and forms the required film seals. Then, the tunnel applies controlled heat so the film conforms around the package.
For automated side-seal applications, the STS TP Series wrapper provides an upstream packaging option for tall and variable-length products. However, the selected tunnel must accommodate the actual package dimensions and required conveyor speed.
Facilities processing smaller packages can also compare the compact STS 1509-2 shrink tunnel or the larger STS 1609-3 shrink tunnel. As a result, customers can match tunnel capacity more closely to their production needs instead of installing more equipment than the application requires.
Package width and height provide the starting point for tunnel selection. In addition, buyers should consider product length, film type, film gauge, conveyor speed, heat sensitivity, production volume, and available floor space.
Longer chambers provide more heating time at a given conveyor speed. Conversely, shorter chambers may suit slower lines or applications with lower heat requirements. Therefore, testing the actual product and film combination offers the most reliable way to establish operating settings.
Ameripak evaluates the tunnel, sealer, film, conveyors, electrical service, and production goals as one connected system. Consequently, customers receive a configuration based on their actual packaging process instead of chamber size alone.
In addition, Ameripak supports equipment integration, replacement parts, preventive maintenance, operator training, and shrink-film selection. Therefore, customers gain one experienced source for both the equipment and its continuing operating requirements.
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