| 摘要 |
PROBLEM TO BE SOLVED: To prevent position deflection between a mattress and a sheet installed on it even when a backrest of a bed is moved vertically, and restrict generation of wrinkles in the sheet. SOLUTION: On a one-piece sheet or a bag type sheet 3 folded on one side or on both sides, connection members such as Hook-and-Loop fastener 2 are installed on a lower surface on one side or on both sides. Otherwise, the one- piece sheet or the bag type sheet 3 folded on one side or on both sides is parted into plural sections in the longitudinal direction, and connection members such as Hook-and-Loop fastener 2 are respectively installed on them on lower surfaces on one side or on both sides. In addition, connection members such as Hook-and-Loop fastener 2 are installed on an upper surface on one side or on boths sides of a mattress 4 on which the sheet 3 is installed.
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