| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a receptacle made of foam resin that can be stacked up in compact while restricting a large-sized formation of its outer shape size. <P>SOLUTION: A receptacle main body 10 and a lid 20 are constituted of a foam resin molded member of a low expansion ratio made by expansion-molding foam beads. A side wall part 13 of the receptacle main body 10 is provided with a gradient θin such a way that its cross sectional surface becomes large as it approaches its opening part from a bottom wall part 12 so as to enable the receptacle main body 10 to be stacked up. A plate thickness of the side wall part 13 is set to be 5 mm or more, a gradient θ at the side wall part 13 is set to be 55° to 85° and a stacking efficiency Se of the receptacle main body 10 is set to 50%<Se≤1.667×θ-41.685%. <P>COPYRIGHT: (C)2007,JPO&INPIT |
