ZTL-4550 is a fully automatic "L" sealing machine, widely used for mass production of packaging running water operations, high efficiency, automatic film delivery, automatic perforation and manual adjustment of the film guide equipment and manual adjustment of feed platform, applicable to different widths and heights of products, ZTL-4550 model also has a compact function, for packaging small products design; The sealing knife is made of wear-resistant copper blade. The surface is coated with U. S. DuPontfeyron coating to resist adhesive and high temperature. The transmission system is equipped with "ohmlong" to detect photoelectric, horizontal and vertical detection of each group, easy to switch the choice, for the thin and small packaging, can easily complete the sealing packaging operation; The feeding system is regulated by the electric eye and the timer. It is equipped with close-connected induction switch, Taiwan original electronic brake and gear deceleration motor. Waste collection system.