Excavation cultural relic and its preservation method

摘要

PURPOSE:To provide a cultural inheritance preservable over a long period without being influenced by humidity, etc., even at normal temperatures, and the preservation method therefor. CONSTITUTION:The objective preservation process made up of (A) a process where a unearthed woodchip 1 (cultural inheritance) is immersed in a water-soluble solvent 3 in a vessel 2 to replace the impregnated water in said woodchip 1 by the water-soluble solvent 3, (B) a second process where the resulting woodchip 1 is immersed in a poorly water-soluble solvent 7 in a thermostat 6 to replace the impregnated water-soluble solvent in the woodchip 1 by the poorly water-soluble solvent 7, and (C) a third process designed to solidify the resulting woodchip 1 impregnated with said poorly water-soluble solvent. The method can preserve the woodchip 1 semipermanently through a short time treatment in the state maintained before unearthing.