| 摘要 |
PROBLEM TO BE SOLVED: To assemble/disassemble a paper cylinder and to facilitate its recycling use by improving the paper cylinder used for carrying a large paper space such as a poster into a new structure with a notch formed therein. SOLUTION: A pair of paper cans 1 each having a notch 2 formed therein are assembled into a pair and used as a set of paper cylinder 3. Once received, the set of paper cans 3 are disassembled and reduced into two paper cylinders 1 so as to be easily stored for reuse, and the used paper cylinder is easily carried and returned to its original sender, so that a set of the paper cylinder 3 can be recyclingly used for a plurality of times.
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