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Why use an inline cutting system for continuous edge trim?

Over the coming weeks, we'll be doing a series of blog posts about how an inline cutter system (cutter/fan system) efficiently conveys, processes and removes continuous edge trim and waste filament. Part 1 will discuss why inline cutter trim removal systems can be more effective than conventional venturi systems.

When edge trim from a continuous web, or waste filament from a continuous process, is pneumatically conveyed from the source to the collection point using a conventional venturi system, the material discharged is usually bulky, voluminous and hard to handle.

If the collected trim or filament is recycled back into the process, the tangled, low-bulk-density mass must be fed into a size-reduction or other processing machine. It's a slow, arduous, time-consuming task.

The usual “driver” or “pump” for a pneumatic conveying system handling continuous trim or filament is a venturi, because other drivers, such as material-handling fans, cannot handle continuous materials without jamming. Unfortunately, venturi trim removal systems have a very low operating efficiency and incur substantially higher energy costs than more efficient drivers.

The solution is cutting the continuous trim into small, manageable pieces so that it can be conveyed using an efficient material-handling fan instead of a less-efficient venturi system. This is accomplished by using an inline cutter in the pneumatic conveying line just downstream of the continuous trim or filament pick-up points.

The inline cutter chops the trim or filament into short lengths to:

  1. Reduce the load on the pneumatic conveying system
  2. Substantially increase the bulk density of the discharged material
  3. Permit the use of energy-efficient fans
  4. Eliminate entanglement of the trims or filaments from different sources in a common manifold pneumatic system
  5. Create a manageable, higher density product that is easy to handle, store and feed into most recycling systems.

The net result is a substantial savings of money, manpower and storage space when choosing an inline cutter system over a venturi system.

Part 2 of our series discusses trim and filament pick-up lines.

Learn more about PAC's trim removal systems.

Contact PAC to learn how a trim removal system can save your company money.


 

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