Shrink wrapping involves a process wherein heat-sensitive films are used to cover products before heat is applied to shrink the film and form an airtight wrapping around products.
These machines usually comprise two integrated pieces of equipment, namely a sealer and a shrink tunnel. The most used sealers are L-Bar Sealers, Side Sealers, and Sleeve Sealers that can apply and shrink wrap films such as PE, PVC, BOPP, and POF in a safe and efficient manner.
Our SA Packaging Machinery Range
Our range of L-Bar Sealers, Sleeve Sealers, and Side Sealers, as well as Shrink Tunnels are ideally suited to a wide variety of applications and can be customised according to your production needs. All individual modules that comprise our Shrink Wrap range like infeed and discharge conveyors, multi-lane conveyors, dual infeed rails, and pack cooling racks are available in different versions according to your production requirements.
Side Sealers perform best in highly demanding, large output production lines for the shrink wrapping of e-commerce goods, candy, video game boxes, books, electronics and other consumer goods. Medium, large-sized and even elongated products can also be processed whilst maintaining high wrapping speeds.
By integrating a Shrink Tunnel into your packaging line, time and labour expenses are severely reduced as production efficiency increases exponentially.
Side sealers usually come in two automatic operational designs, namely intermittent motion and continuous motion shrink wrappers.
Depending on production needs, either a two-belt sealer or three-belt sealer can be utilised to eliminate one infeed conveyor for a more efficient wrapping line.
Although a two-belt sealer is more compact than a three-belt sealer, a three-belt sealer is slightly larger and has the added capability of spacing products accurately before they enter the wrapping station.
Since most Side Sealers are sensor-controlled to accommodate both manual or automatic loading, they receive products from an infeed conveyor according to collation specifications.
Using a set of horizontal and vertical product-sensing photo-electric eyes, and a time relay, Side Sealers use up to a 1100 mm wide horizontal sealing bar to apply continuous tubes of heat-sensitive wrapping films like PE, PVC, BOPP, and POF to products.
Virtually any product size and length can be wrapped according to a controlled film feeding speed that provides a more cost-effective film application.
Next, the end seal, and side seal is applied with a vertical state-of-the-art thermostatic side cutter. Packages are then separated into individual units with a cross-seal further down the line before products are moved through to the shrink tunnel.
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