Operating principle of continuous sealing
Some machines have different methods but based on the same principle:
For example, a band sealer for continuous sealing cycle, a conveyor will move the material to seal between the heating jaws, mostly irons containing a heating cartridge. This element is always heating to allow a continuous scrolling of material.
Once the heating irons passed, the material passes between cooling irons effectively ventilated to allow heat to dissipate and material to congeal. Then follows the passage of knurling, the material passes between two knurled wheel that will give their final appearance to the seal.
Finally, the conveyor leads the material on other accessories(date coder, trimmer...), on a packaging line, or just let the material finish his race in a carton.
Views on the right will show the positioning of the main components of a band sealer. Click above for detailed view: