L-Sealers 101

L-sealers are utilized daily in manufacturing facilities across the globe to secure and protect products of diverse shapes and sizes. Available in both manual and automatic configurations, L-sealers come in various sizes and sealing capabilities. Manufacturers must carefully select an L-sealer that aligns with their product specifications, including size, operation function, and sealing speed (packages per minute).

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What is an L-Sealer?

An L-sealer is a packaging machine designed to enclose a product in shrink film. Typically, it consists of an adjustable product tray where the product is positioned, covered by a top layer of center-folded film. The product is then moved to the sealing area, where a seal head and takeaway conveyor apply heat to seal the film together, creating a loose bag around the product.

These L-sealers can be manual or automatic and are often paired with shrink tunnels to shrink the film around the products. While L-sealers and tunnels are usually separate machines, combination units, like Eastey's VS Value Series Combo Unit, merge the two for an integrated sealing solution.

Manual L-Sealers

Manual L-sealers are straightforward to set up and operate. The product is placed on the product tray, which separates the center-folded film, allowing the product to be nestled between the two layers. The operator then pulls down the 'L' shaped seal bar to activate the sealing process, held in place by magnetic sealing clamps for a time determined by the adjustable dwell time settings, which can range from one to five seconds.

Once the seal is completed, the seal head automatically releases, allowing the next product to be placed in the sealing area. Our Eastey L-Sealers feature either hot wire or hot knife seal heads, enabling effective sealing for various films, including polyolefin, polyethylene, and PVC.

After sealing, the takeaway conveyor transfers the product to the shrink tunnel for the film to be shrunk. However, some users may prefer to have their product wrapped loosely, in which case a shrink tunnel isn’t necessary. For example, airline blankets are often sealed by L-sealers to create a loose enclosure.

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