| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bottom seal bar for standing pouches, the bottom seal bar enabling production of a standing pouch having superior seal strength by improving abutment between sealing surfaces in whatever kind of shape and size of a sealing bottom. <P>SOLUTION: The bottom seal bar for standing pouches of a bag manufacturing apparatus for standing pouches which performs bottom sealing, is constituted of an upper side bottom seal bar and an under side bottom seal bar, wherein un upper side projection with a shape corresponding to a bottom seal shape is arranged at the center of the upper side bottom seal bar and a warping prevention projection is arranged on each of both lengthwise outer side positions of the upper side bottom seal bar with respect to the upper side projection, and un under side projection with a shape corresponding to the bottom seal shape is arranged at the center of the under side bottom seal bar and a warping prevention projection is arranged on each of both lengthwise outer side positions of the under side bottom seal bar with respect to the under side projection in such a way that the warping prevention projections on the under side bottom seal bar abut the warping prevention projections on the upper side bottom seal bar, respectively. <P>COPYRIGHT: (C)2012,JPO&INPIT |
