The process involves a product being encapsulated in poly film. The film is then loosely heat sealed by a heated L-shaped heating arm. The poly-wrapped product is then placed on a conveyor belt and conveyed through the heat shrink tunnel where the heat causes the poly film to shrink and form tightly around the product.

Heat Shrink Tunnel – L-Bar Sealer

The L-bar sealers are coated in either PTFE coated fabric with adhesive or PTFE coated Zone tapes which just have adhesive on each edge. These fabrics cover the heated wire of bar and stop the poly film from sticking to the heater when they melt.

Heat Shrink Tunnel – Conveyor Belt

Heat Shrink Tunnels or Ovens are equipped with an integrated conveyor belt. There are 3 main types of conveyor: PTFE Coated open mesh, Silicone coated fibreglass, or a Stainless-Steel roller system. The PTFE and Silicone coated belts (7305 & 7102 respectively) are usually joined using a stainless-steel clipper system to enable them to be changed very quickly. The film used in this system is usually polyolefin, PVC, and shrink polyethylene films.

High Speed Packaging belts

Our conveyor belting products are used extensively in packaging machines of all shapes and sizes. Our 9054 & 9064LS belts with guiding studs are used on high speed automatic packaging machines made by such OEMs as Hayssen, Cassoli, Libra & Waldessa.

Technical data above is based on our general experience and is given in good faith. We are however unable to accept responsibility in respect of factors which are outside our knowledge or control. All data is subject to change without notice. Some items may not be on stock and/or a minimum order quantity may apply.