Discussion
'Staypak' is which form of wood from the following?
Answer: D
Staypak is heat stabilized compressed wood.
Staypak, developed at the US Forest Products Laboratory, is made by compressing wood at a temperature high enough to make the lignin flow, so that the internal stresses relax and the compressed wood keeps its new density without springing back when it absorbs moisture. It is dense, hard and strong, and is used for tool handles and similar items.
Compreg (compregnated wood) is wood impregnated with resin and then compressed. Heat stabilized wood (staybwood) is heated without compression. Chemically modified wood, such as acetylated wood, is changed chemically rather than by compression.
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