An adjustable sealing arm raises and lowers as products move through the system. Once sealed, the closed pouch is then moved into a shrink tunnel, shrinking and tightening the film.L-bar sealers are used in shrink wrap packaging. With a single action, the operator can cut and seal shrink film by grabbing the handle and pushing it down to be level with the package. The operator will gently pull the package away from the machine. The heating wire will seal and cut off the film.

L sealer is called so because of its shape. An L sealing machine has a configuration resembling shape of letter “L”. This is a popular variant of packaging machines used for wrapping and sealing of products to ensure that the products are transported or stored without damages from external conditions.An adjustable sealing arm raises and lowers as products move through the system. Once sealed, the closed pouch is then moved into a shrink tunnel, shrinking and tightening the film.