公开(公告)号：EP1608502A4

公开(公告)日：2008-07-23

申请号：EP03752549

申请日：2003-09-19

申请人： GLAD PRODUCTS CO

发明人： RUSNAK JOHN ,  SHOEMAKER JEFF ,  SHAH AMIT ,  O'HARA SCOTT

IPC分类号： B31B19/90 ,  B65D33/30 ,  B65F1/00 ,  B31B1/90

CPC分类号： B65F1/0006 ,  B31B70/8135 ,  B31B70/8137 ,  B65D33/30

摘要： Provided is a plastic bag (100) including a live elastic strip (120) that, in the elastic strip's normal condition, contracts thereby constricting an opening of the bag to assist in retaining the bag to an object. The elastic strip includes a first region (150) that is continuously attached to a sidewall of the bag between a first side edge (106) and a second side edge (108) of the bag and a second region (152, 154) that remains unattached to the sidewall. The attached region does not contract but instead forces the portion of the sidewall to which it is attached to pucker into a serpentine path. The unattached region does contract causing the portion of the sidewall to which it is adjacent to bunch together. Also provided is a method for manufacturing a plastic bag that involves stretching a live elastic tape and continuously attaching a region of the stretched tape to a web of plastic material.

摘要翻译： 提供了一种塑料袋（100），其包括活动弹性条（120），其在弹性条的正常状态下收缩，从而收缩袋的开口以帮助将袋保持在物体上。 所述弹性条带包括第一区域（150），所述第一区域（150）在所述袋的第一侧边缘（106）和第二侧边缘（108）之间连续地附接到所述袋的侧壁;以及第二区域（152,154） 未连接到侧壁。 附着区域不收缩，而是将其附着到其侧壁的侧壁的部分压向蛇形路径。 未附着的区域确实收缩，使得与其相邻的侧壁的部分束缚在一起。 还提供了一种用于制造塑料袋的方法，该方法涉及拉伸带状弹性带并将拉伸带的区域连续地附着到塑料材料网上。