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    • 5. 发明专利
    • TRAY FOR CONTAINER PACKAGE FOR DISCOID RECORDING MEDIUM
    • JP2001048275A
    • 2001-02-20
    • JP22089399
    • 1999-08-04
    • SHINETSU POLYMER CO
    • ARAI KATSUMI
    • G11B23/03B65D85/57
    • PROBLEM TO BE SOLVED: To prevent damage on the obverse and reverse, and the central holding part of a tray upon molding, transportation, or a package processing by avoiding planar contact of the obverse and reverse of mutual trays piled on top of one another with protruded ribs formed on the upper face of a container forming recesses for hosing discoid record media. SOLUTION: The top section of protruded ribs 4 formed along the peripheral edge of the container surface 3 of a tray 1 forming recesses 2 for housing discoid recording media is made round so as not to impart a bruise to the rear face of the housing recess 2 of the tray 1 piled on top of one another on the obverse side. In this way, even when the trays are piled, the rib 4 and the obverse and reverse of the tray are brought into line or point contact with each other, and the obverse and reverse of the tray 1 are not brought into planar contact with both the obverse and the reverse of a tray 1 touching the upper and lower sides. Hence, it prevents mutual trays from rubbing each other together and leaving a scratch. Further, strength is enhanced and deformation and warp of the tray 1 itself can be prevented by the ribs 4.