Processing, Preservation and Wood from Plantations Philip Blackwell - University of Melbourne & Phạm Đức Chiến - FSIV 1 Plantations The common species are Acacia mangium, Acacia auriculiformis, Acacia hybrid, Eucalyptus urophylla Eucalyptus camaldulensis Pinus ssp Native mixed species 2 Typical plantation in Vinh Phuc Province Plantations Plantations need management to obtain the maximum return. Pruning Thinning Good genetic stock Sustainable management can lead to FSC certification 3 Advantages of the Australian Species • Fast growing • Good return to growers • Grows in a range of climatic and soil conditions • Easy to process • A range of potential markets 4 Versatile Species Poles Wood chips Pulp for paper Particle board MDF Saw Logs Construction Furniture Veneer Peeled Sliced 5 Small logs • Small logs can be used for wood chips or construction timbers. • Larger diameter logs return higher value to the producer. • Straightness is also important. 6 Problems? • Growth Stresses • Small diameter • Unstable until dry • Drying difficulties • Difficult to preserve • Colour variation 7 Processing Horizontal and Vertical Bandsaws Cheap to purchase Easy to use Made in Vietnam Reliable 8 Bandsaw Logs are held to wooden bearers with steel spikes. The saw is moved over the log to cut a board. The board is removed The saw is then taken back over the log The blade is lowered The cutting process is repeated 9 Sawing Patterns Bandsaws produce flat sawn boards. Most boards are back sawn (B) Some boards in the centre are Quarter sawn (A) Quarter sawn boards dry with less checking than back sawn boards 10 B A [...]... timber 17 Training Needs • Training in kiln drying and kiln operations • Training for sawmillers to understand the structure and nature of wood and how they can process it better • Training in the international requirements for timber products in furniture manufacturing • Training on sawmill safety and preventive maintenance • Training in business management and marketing 18 ... manufactured from kiln dried timber • Dry timber is less susceptible to decay 14 Preservation • Some species are naturally durable • Preservation is required when timber is to be in-ground or out-side • Preservation is the process of adding chemicals to the timber to deter insects or prevent decay 15 Difficulties in treating • Many species are difficult to treat • In some species sapwood is treatable • Sapwood . Processing, Preservation and Wood from Plantations Philip Blackwell - University of Melbourne & Phạm Đức Chiến - FSIV 1 Plantations The common species are Acacia. timber 17 Training Needs • Training in kiln drying and kiln operations • Training for sawmillers to understand the structure and nature of wood and how they can process it better. • Training in. preserve • Colour variation 7 Processing Horizontal and Vertical Bandsaws Cheap to purchase Easy to use Made in Vietnam Reliable 8 Bandsaw Logs are held to wooden bearers with steel spikes. The saw