| 摘要 |
PROBLEM TO BE SOLVED: To provide a flexible sponge for easily and effectively washing eating utensils having various shapes by using one sponge. SOLUTION: The flexible sponge is composed of a long sponge having a shape like a rectangular column, a cylinder or the like, and a core material provided inside the sponge. When the shape of the sponge is changed, the changed shape is retained by the core material. COPYRIGHT: (C)2009,JPO&INPIT
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