Fully Automatic L Sealing Machine comes with high-speed L-sealing solutions for wrapping using polyolefin film. The fully automatic L-sealers can be used in combination with Sevana's shrink tunnels. A fully Automatic L Sealing Machine is a piece of packaging equipment designed to enclose a product with shrink film. It is a common L-sealer machine consisting of an adjustable product tray where the product is placed and the top layer of the centre-folded film covers the product.