| 摘要 |
PROBLEM TO BE SOLVED: To provide a tubular formed material made by papermaking capable of simply obtaining strong fitted state. SOLUTION: This tubular formed material made by papermaking containing pulp fiber is provided by installing in a plurality of projecting line parts 2 for fit-joint, extending along the length direction of the material 1 made by papermaking and extending in outside direction at an outer circumferential surface part 10. The projecting line parts 2 are preferably installed over the whole length of the material 1 made by papermaking. At the outer circumferential surface part 10, it is preferable to install in a plurality of ring-formed projecting line parts 3 projecting outside so as to link among the projecting line parts 2. COPYRIGHT: (C)2006,JPO&NCIPI
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