| 摘要 |
<p>PROBLEM TO BE SOLVED: To solve the problem in which: since traditional files are generally in a rectangular shape, and in particular, in the case of a file having an upper edge opened, a document to be inserted into the file is caught at an upper edge corner of the file, which makes it difficult to smoothly insert the document.SOLUTION: A rectangular file 1 has a bag-like shape in which two resin sheets with flexibility 5, 6 are connected with each other at a portion other than an upper edge 1b. The upper edge 1b of the file 1 is opened, and an end of the upper edge 1b is cut aslant.</p> |
