The specially equipped compaction drum with spiked teeth, rolls over the waste, crushing it and using the full space of the container. The geared drum weighs 1.8 tonnes and is highly effective at breaking up general and especially wood waste. The adjustable compaction time can be set for a few minutes or several hours depending on the waste to crush. Continuous loading during compaction is possible. The drum travel length is set to automatically avoid the drum touching the end of the container.

Bergmann pioneered this method of crushing and compacting in open containers over thirty years ago. Other big organisations have tried to replicate the technology, however, Bergmann still remain the original and best with continuous improvements being introduced all the time.

Typical uncompacted tonnages in a 35 yarder are 1- 2 tonnes. But with a roll packer the tonnage increases to between 8 and 12 depending on the type of waste.