| 摘要 |
PROBLEM TO BE SOLVED: To provide a plastic spacer foldable compact, transportable in large quantities at once since it is light in weight, and enabling an increase in working efficiency since it can easily bind an overlapped part between reinforcements. SOLUTION: U-shaped or V-shaped cut parts 21, 22, 23, and 24 are formed at the upper center parts of tubular rectangular parallelopiped walls 11, 12, 13, and 14 having upper and lower opening parts forming square shapes in use. Bent parts 31, 32, 33, and 34 are formed at side parts where the rectangular parallelopiped walls 11, 12, 13, and 14 are adjacent to each other. The rectangular parallelopiped walls 11, 12, 13, and 14 are formed integrally with the bent parts 31, 32, 33, and 34. The depth of the U-shape of the cuts 21, 22, 23, and 24 is made two times or more the lateral length thereof. COPYRIGHT: (C)2005,JPO&NCIPI
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