| 摘要 |
PURPOSE: An accessory containing porous volcanic rock and a method for manufacturing the same are provided to improve the decorative quality of the accessory by exposing porous volcanic rock through the opening part of a frame. CONSTITUTION: Porous volcanic rock is cut to shape porous volcanic rock blocks(120). The porous volcanic rock blocks are heated based on a heating unit and are dipped in cold water for several times. The porous volcanic rock blocks are washed using an ultrasound wave-based washing unit to eliminate foreign materials. The external surfaces of the porous volcanic rock blocks are robbed by a brush. The porous volcanic rock blocks are dried. Oil is applied on the external surfaces of the porous volcanic rock blocks. A pattern part(112) is arranged on the front side of a frame part. Opened parts(113) is arranged at remaining part of the frame part. The porous volcanic blocks are inserted into the frame part and are supported by a plurality of curved pieces(114).
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