Knowledge points about wooden based board and plywood, series five. Briefly describe the pollution of the plywood industry.Air pollution: (1) exhaust gas from the veneer dryer (2) harmful gas produced…
Knowledge points about plywood, series four. What are the methods of liquid sizing plywood veneer?(1) Roller sizing: simple operation, low efficiency, not easy to automate.(2) glue: uniform sizing, good quality,…
Knowledge points about plywood, series three. Briefly describe the measures to improve the output rate of single boards okoume plywood.(1) Reduce the diameter of wood core. (Can use double card…
Briefly describe the conditions of adhesives in wood-based plywood sheet production.(1) The adhesive should have enough fluidity to wet the solid surface well. Good wettability, to form a firm combination,…
Knowledge points about plywood, series one What is wood-based panel? Why to develop wood-based panel industry?Wood-based panel is made of wood or other plant fibers as raw materials, processed and…
First add the melted phenol to the reaction kettle and start the agitator. Add sodium hydroxide solution and the actual water consumption, heat to 42℃~45℃, let it hold for 25…