Belco manufactures two styles of shrink tunnels to complement every level of shrink film sealer available to our industry. These tunnels will handle all commercially available shrink films, including polyethylene. From production speeds of five up to 150 packages per minute, there is a Belco tunnel suitable for your application.

Two styles of shrink tunnels make up the product line: our “Fan Style / Convection Oven” tunnels and our industry leading “Re-circulating Air” models.

The Re-circulating Air product line consists of ten models and seven sizes which are the ST1608, ST1608-SS, ST1612, ST1608L, ST1608L-SS, ST2210, ST2210-SS, ST2214, ST3212 and the ST4410. These models are rated for production speeds of 5-40 packages per minute or 500,000 to 4,000,000 packages per year. (Based upon one 8-hour shift).

These tunnels utilize the Watlow 988 microprocessor based digital temperature controller and multiple “fin-strip” heating elements in combination with a forced air flow design. This air delivery pattern allows the precise application of hot air directly to the film as your product is conveyed through the shrink chamber. You have the ability to pattern the airflow, allowing it to contact the film wherever you select. The results are the best possible shrink, even for difficult shapes.

Re-circulating air tunnel chamber sizes range from 16” Wide up to 44" Wide and have various standard height openings available. Whenever the package dimension comes within 2" of any chamber wall, seek factory advice. The concern is the shrink film contacting the inside chamber surface during the film ballooning process. Typically, the next size shrink chamber will be recommended, but not without careful evaluation.

All tunnels are available with conveyor choices of Teflon mesh belt, silicone rubber sleeved live rod/rollers, or Falcon belt style conveyors.

The rule of thumb is Teflon mesh belts handle light products up to five pounds, the rod conveyor is for heavier products up to 25 pounds, as well as applications where aesthetics are critical and the Falcon belt is for your heaviest packages and shrink polyethylene films.

Options are available to best meet the demands of your application. Popular options are Lighted Viewing Windows, specific voltages and extended infeed or exit conveyor lengths for preparing shrink bands or installing product identification applicators.

Our patent pending “Smart Tunnel” control system can be installed into all ten models for applications requiring repeatable and absolute shrink quality, seal placement, speed or aesthetics. The PLC with color operator touch-screen controls air velocity, tunnel temperature and conveyor speed as well as stores up to 100 product recipes so you can make fast and accurate change overs.

Tunnels with the "SS" in their description (ST1608-SS) are built with stainless steel construction and are suitable for typical food plant wipe-down environments.

Wear items are minimal on these units. You can schedule preventative maintenance when it is convenient. You won’t experience expensive delays to productivity because of normal wear and tear issues.