公开(公告)号：EP2298656A1

公开(公告)日：2011-03-23

申请号：EP09773151.7

申请日：2009-06-29

申请人： Nihon University ,  Nippon Paper-Pak Co., Ltd.

发明人： KOEDA, Fujio ,  SHIMIZU, Toshinari ,  TUCHIDA, Osamu ,  TOMINAGA, Youhei ,  TANAKA, Atsushi ,  URANO, Yoshihiro

IPC分类号： B65D5/40

CPC分类号： B65D5/067 ,  B65D5/068 ,  B65D5/745

摘要： Provided is a paper container including four body portion panels (4, 5, 6, 7) forming a cylindrical body portion having a square section, the paper container being configured so that upper ends of the body portion panels are continuously provided with a pair of gable roof-forming panels (13, 14), which include exterior top seal panels (17, 18) and are opposed to each other, and provided with a pair of gable wall-forming panels (21, 22), which include interior top seal panels (25, 26) and are opposed to each other, and any one of which serves as a spout and is to be opened, the gable wall-forming panels (21, 22) are folded out between the gable roof-forming panels (13, 14), and the exterior top seal panels (17, 18) and the interior top seal panels (25, 26) are heated and sealed with each other at a predetermined position so as to be hermetically sealed, in which: a seal width on a non-opening side (B) of a top seal portion (30), which is formed by heating and sealing the exterior top seal panels (17, 18) and the interior top seal panels (25, 26) with each other at the predetermined position, is larger than a seal width on an opening side (A) serving as the spout, the seal width being downwardly enlarged from the opening side (A) to the non-opening side (B); and top-portion lateral-fold-lines (11, 12) serving as boundaries between the gable roof-forming panels (13, 14) and the body portion panels (4, 6) are downwardly tilted from the opening side (A) to the non-opening side (B). With this configuration, it is possible to provide a paper container including a top seal portion easy to be grasped without deteriorating capability of opening with ease of the top seal portion.

摘要翻译： 本发明提供一种纸容器，其包括四个主体部分面板（4,5,6,7），其形成具有正方形部分的圆筒体部分，所述纸容器构造成使得主体部分面板的上端连续地设置有一对 山形屋顶形成板（13,14），其包括外部顶部密封板（17,18）并且彼此相对，并且设置有一对山形壁形成板（21,22），其包括内部顶部 密封板（25,26）并且彼此相对，并且其中任何一个用作喷口并且要打开，山形壁形成板（21,22）在山墙顶板形成板 （13,14），并且外部顶部密封面板（17,18）和内部顶部密封面板（25,26）在预定位置彼此加热和密封以便被密封，其中：a 通过加热和密封外部顶部（30）形成的顶部密封部分（30）的非开口侧（B）上的密封宽度 （17,18）和内部顶部密封面板（25,26）在预定位置处彼此大于作为喷口的开口侧（A）上的密封宽度，密封件宽度向下扩大 从开口侧（A）到非开口侧（B）; 并且用作山墙屋顶形成板（13,14）和主体部分面板（4,6）之间的边界的顶部横向折叠线（11,12）从开口侧（A）向下倾斜到 非开口侧（B）。 利用这种结构，可以提供一种纸容器，该纸容器包括易于被抓握的顶部密封部分，而不会劣化顶部密封部分的打开能力。