公开(公告)号：US3687356A

公开(公告)日：1972-08-29

申请号：US3687356D

申请日：1965-06-28

Applicant: ST REGIS PAPER CO

Inventor： GOODRICH JOHN J ,  WAXLAX CHESTER E

IPC: B65D30/08 ,  B65D30/20 ,  B65D31/02

CPC classification number: B65D31/10 ,  B65D31/02

Abstract: A bag of tubular form comprising a plurality of contiguous plies of flexible sheet material, said bag having a front surface and an oppositely disposed rear surface adapted to overlap said front surface at one end of said tube when said bag is in its assembled condition, said bag being longitudinally and reversely creased along diametrically opposed portions to provide a pair of oppositely disposed gussets interposed between said front and rear surfaces, each of said gussets having a front portion and a stepped rear portion adapted to overlap said front portion within the overlap area of said front and rear surfaces at said end of the tube when said bag is in its assembled condition, and with the bag plies extending progressively and successively one beyond another at each surface portion at said bag end, and a bonding agent in a dormant state being applied on each surface portion at said bag end, and said bonding agent being reactivatable to close said bag subsequent to a later bag filling operation.

Abstract translation: 一种管状形式，包括多个相邻的柔性片材层，所述袋具有前表面和相对设置的后表面，当所述袋处于其组装状态时，该后表面适于在所述管的一端与所述管的一端重叠， 袋沿着直径相对的部分纵向和反向地折皱，以提供插入在所述前表面和后表面之间的一对相对设置的角撑板，每个所述角撑板具有前部和阶梯后部，其适于在所述前部和后表面的重叠区域内与所述前部重叠 当所述袋处于组装状态时，在所述管的所述端部处的所述前表面和后表面，并且所述袋层在所述袋端处的每个表面部分处逐渐且连续地延伸超过另一个，并且处于休眠状态的粘合剂为 施加在所述袋端部的每个表面部分上，并且所述粘合剂可再活化以在随后的袋状物f之后关闭所述袋 lling操作。