High Quality Side Seals

The new high-speed Seal-Cut sealing system for plastic film offers an original, innovative solution for machine direction sealing. The Seal-Cut is capable of producing high quality, sealed edges in a wide variety of film applications. The stand-alone design allows it to be free standing or easily attached to winders, bag-making machines and rewinders.

Versatility

The Seal-Cut is capable of converting large jumbo or master rolls into smaller poly bags. This saves production and equipment costs because you can run several small size poly bags on one larger line rather than needing several smaller lines to run the same amount of bags.

Safe

The seal-cut uses a non-sharp sealing element and has no driven parts. All high temperature and pinch points are clearly labeled.

The Seal-Cut reverses the process commonly known as slit-seal. Instead of slitting the material and then sealing it, the material is first preheated, then sealed and then split. This results in a clean seal, even on material up to 6.0mil. For most materials, we use a significantly lower sealing temperature than the hot knife systems. For instance, a hot knife is usually set between 700 and 900F. The Seal-Cut is set at about half that temperature. The benefits of using a lower temperature is the polymer is not crystallized. The result is a high quality seal that has excellent strength along the seal edge in both the transverse and machine directions.

Film Path Though the Unit

The diagram below shows how the film goes through the unit. The film passes under the sealing drum which contains the stationary seal element holder. The seal element itself has three separate zones: preheat, seal and cut. This three zone approach yields a sealing process that is more gradual and less of a shock to the film.