| 摘要 |
PROBLEM TO BE SOLVED: To provide a serial cover which makes respective mattress pieces attachable and detachable and easily rotatable, eliminates the labor for housing the respective mattress pieces into mattress connecting covers, forms the covers by integrating only the covers of a fixed size without changing the covers at each change of the sizes of the mattresses and prevents the mattress from deviating from each other during use. SOLUTION: The mattresses are divided to form the mattress pieces 2 and the respective mattress pieces are integrated to form a mattress body 1. Nonslip materials are bonded to flanks 3A and base surfaces 3B of respective mattress piece one-side materials 3. The cover 11 for integrally housing the respective mattress pieces 2 is turned up by the required width at both ends in the longitudinal direction of a rectangular fabric and is tied up at both ends in a transverse direction exclusive of the width to be inserted with the mattress of turn-ups 12, by which a mattress insertion section is formed and the serial cover in common use as a sheet is constituted. |
