| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a removable mattress sheet of box-shape without a rubber band around an opening, which is accurately set to an automatic folding machine. <P>SOLUTION: The mattress sheet 1 having a box shape and removably mounted to a rectangular parallelepiped mattress 7. The sheet has a sheet body portion 3 for covering substantially the whole upper surface and both longitudinal side surfaces of the mattress 7, and a stretchable portion for covering at least eight points of the upper and lower four corners of the mattress 7 and the lower surfaces of the longitudinal both ends of the mattress 7 when mounted to the mattress 7. The sheet is formed with a lower side opening portion for putting in and taking out the mattress 7 to be mounted to the mattress 7, and at least the upper side of the longitudinal end is formed of the sheet body portion 3 when the sheet is not mounted. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
