At various stages in the production process, plastic pellets must be transported from one place to another (for example, from the silo to the dryer). This process can be automated and accelerated with a pneumatic conveying system. A pipeline is run from the starting point to the destination and connected to a vacuum pump or compressor. Depending on the bulk weight of the material and length of the pipeline, the system is designed so that the vacuum pump (vacuum conveying) or compressor (pressure conveying) generates enough air speed to pick up the material and convey it to its destination without depositing it in the pipeline. Because pneumatically conveying plastic pellets results in a lot of dust, a filter system is also recommended.