| 摘要 |
<p>PURPOSE:To prevent breakage of a wrapping decoration film and deformation of an opening respectively by having an end rim of a short side plate retreated from an opening face and also by forming an opening side corner of a long side plate into an arc. CONSTITUTION:A sleeve case is for housing a flat-box-shaped product such as a video cassette for example. A case body 1 has at least a wide face plate 3 connected to a long side of a back plate and a narrow face plate 4 connected to a short side of the wide face plate 3, while a flat rectangular opening K for permitting an object 100 to be housed to pass therethrough. In this case an end rim of the narrow face plate 4 is retreated from an opening face of the opening K and positioned in a deeper position. On the other hand, a corner E on the opening K side of the wide face plate 3 is formed into an arc. Thus occurrence of a stress concentrated to a decoration film for wrapping the entire case 1 can be prevented, thereby preventing the film from breaking and the opening K from deforming, respectively.</p> |
