De-Barker / Saw Mill / Chipping Machine

Much of the timber used for papermaking are the parts of the tree that other commercial industries don't want – such as saw mill waste and forest thinning. Bark is stripped from the logs by knife, drum, abrasion, or hydraulic barker. The stripped bark is then used for fuel or as soil enrichment. Stripped logs are chipped into small pieces by knives mounted in massive steel wheels. The chips pass through vibrating screens, where both undersized chips, dust, and oversized chips are rejected. Accepted chips are then stored or moved on to the next process.