PROBLEM TO BE SOLVED: To eliminate the necessity of forming cuts in partitioning plates, enabling miniaturization of a case as a whole and its easy assembly. SOLUTION: The packaging case 10 is so constituted as to have its interior partitioned with intermediary partition plates 44 into a first encasing section and a second encasing section, while having a third encasing section formed by folding a small partition plate 58 into the interior of the packaging case 10, with the first encasing section and second encasing section holding a handling manual and equipment proper, while the third encasing section storing small articles, etc. The small partition plate 58 is prevented from being developed by the end side 42A of a first continuously extended strip, so that the small articles, etc., stored in the third encasing section do not run out into the interior of the first encasing section. Furthermore, the third encasing section is formed by a simple work of only folding the small partition plate 58 into the interior of the packaging case 10 (eliminating the work of inserting). COPYRIGHT: (C)2005,JPO&NCIPI