A number of wood species, particularly hardwoods, have very low permeability. This can cause problems during processing. The timber industry requires a technology which can provide an increase in wood permeability for vapours and liquids. Intensive MW power applied to the wood generates steam pressure within the wood cells. Under high internal pressure the weak ray cells are ruptured to form pathways for easy transportation of liquids and vapours in the radial direction. Narrow voids are also formed in the radial-longitudinal planes. It is possible to use microwave modification of wood to enhance existing processes and develop entirely new processing and product options for wood. It establishes opportunities for developing a number of new commercial applications.
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