| 摘要 |
PROBLEM TO BE SOLVED: To provide a cylindrical screen from which a mat is easily peeled. SOLUTION: The screen 1 is a cylindrical screen 1 formed by arranging screen bars 2 at gaps from one another in parallel and having a height longer than the diameter, and longitudinal slits S are formed between neighboring screen bars 2. The screen bars 2 are engaged with rings R and the screen bars 2 are interrupted in the transverse direction by a member having a width T thicker than the thickness (t) of the ring R so as to cut the longitudinal slits S in the middle.
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