| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a backpack back-pad having the following properties: it can be easily adjusted to a protrusive object so as to conform to the user's back; when an exterior fabric is embossing-pressed so as to cover a cushioning material, a projection can be satisfactorily adjusted; defect occurs less; examining a position and height of the back-pad projection, which is necessary to become a perpendicular state when it is carried on the back, on each body height provides the back with a moderately close contact with the backpack and with an excellent feeling of touch when the user carries it on the back; a part with no disposition of the cushioning material, because of coming in less contact with the back, provides the back with less feeling of pain; and the user feels the backpack carried on the back light. <P>SOLUTION: An expanded object 6a with larger magnification of foaming is combined with an expanded object 6b with smaller magnification of the foaming in a layer to constitute the cushioning material 6. <P>COPYRIGHT: (C)2012,JPO&INPIT |
