| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fiber drum in which a paper member such as a cylindrical body or the like and a hard member containing a metal or a plastic such as a lid or the like can be separated easily and an upper lid and a bottom lid are fixed strongly maintaining strength of an opening edge of the cylindrical body. <P>SOLUTION: A top fastening device 4 includes a lower engagement surface 48 engaging with a top groove 14 of the cylindrical body 1 and an upper engagement surface 49 engaging with the upper edge of the upper lid 2, and a bottom fastening device 5 includes an upper engagement surface 58 engaging with a bottom groove 15 of the cylindrical body 1 and a lower engagement surface 59 engaging with the lower edge of the bottom lid 3. An upper opening 11 of the cylindrical body 1 is closed with the top fastening device 4 by holding the upper lid 2 with an annular body 4a fitting in the circumference of a ring-like part 13 detachably and attachably, the upper engagement surface 49 and the lower engagement surface 48 and a lower opening 12 of the cylindrical body 1 is closed with the bottom fastening device 5 by holding the bottom lid 3 with an annular body 5a fitting in the circumference of the lower opening 12 detachably and attachably, the upper engagement surface 58 and the lower engagement surface 59. <P>COPYRIGHT: (C)2012,JPO&INPIT |
