An Alternative Preservative Treatment Procedure for Marine- and Shuttering-Grade Plywood in India

The present research was performed with an aim to develop an alternative preservative treatment method for marine- and
shuttering-grade plywood. Per Indian Standards, 12 kg/m3 of retention is required in marine- and shuttering-grade plywood,
which is very difficult to achieve. The higher loadings of wood preservative chemical are being achieved only by the pressure
impregnation method. The pressure impregnation method requires energy to run the equipment, skilled manpower, and
sophisticated instruments; a large amount of damage takes place to the plywood during the process. Hence, an alternative to
this glue-line poisoning followed by hot and cold dipping of plywood has been found suitable to achieve the 12 kg/m3 of
retention without affecting the glue and plywood properties.

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