| 摘要 |
PROBLEM TO BE SOLVED: To provide a sheet of perforated structure capable of separating certainly along the division line provided previously while each divided unit of article is equipped with a sufficient waterproofness and strength. SOLUTION: The sheet designed to be divided is formed by laminating a paper layer 3 and synthetic resin layer 4, wherein the perforated structure of the division line consists of a perforation 1 penetrating the sheet across the thickness and continuous notches 2 having uniform depth approximately penetrating only the synthetic resin layer 4 across its thickness.
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