公开(公告)号：US5573489A

公开(公告)日：1996-11-12

申请号：US172368

申请日：1993-12-22

申请人： Carl R. Letendre ,  Earle R. Powell

发明人： Carl R. Letendre ,  Earle R. Powell

IPC分类号： B31B19/86 ,  B31B23/86 ,  B31B23/14

CPC分类号： B31B19/00 ,  B31B2219/909 ,  Y10S493/926

摘要： A thermoplastic bag structure and a method for forming handle-containing bags in roll-form. The method includes the steps of forming a continuous collapsed tube; forming pairs of closely spaced seals transverse to the tube at bag length distances apart; forming a transverse line of weakness between each pair of seals; simultaneously or thereafter folding the marginal edges of the tube inwardly toward each other; forming and removing a cut-out region at one end of each sealed segment of the tube so that on removal of the cut-out region, the cut defines loop handles and a bag mouth region in each bag; again folding the marginal edges of the tube inwardly toward each other; and convolutely winding the structure to form severable bags on a roll.

摘要翻译： 热塑性袋结构和用于形成卷状的手柄袋的方法。 该方法包括形成连续塌缩管的步骤; 在袋长度分开的距离处形成横向于管的紧密间隔的密封件对; 在每对密封件之间形成横向的弱线; 同时或之后将管的边缘边缘彼此向内折叠; 在管的每个密封段的一端形成和移除切出区域，使得在移除切出区域时，切口限定每个袋中的环手柄和袋口区域; 再次将管的边缘边缘彼此向内折叠; 并卷绕结构以在卷上形成可分离的袋。

公开(公告)号：US5683340A

公开(公告)日：1997-11-04

申请号：US392645

申请日：1995-02-23

申请人： William P. Belias ,  Edward M. Bullard ,  Carl R. Letendre

发明人： William P. Belias ,  Edward M. Bullard ,  Carl R. Letendre

IPC分类号： B65D33/16 ,  B31B23/02

CPC分类号： B65D33/1608 ,  Y10T83/4801 ,  Y10T83/6595

摘要： There is provided a thermoplastic film bag having at least two integral members that facilitate opening the bag. The bag is manufactured from a flattened tube of thermoplastic material which may be distinctively severed along independent phase shifted sinusoidal oscillating paths down the center of the collapsed tube. The bag may have two opposed tie members which are offset from the vertical center axis of the bag and from each other. The tie members may be grasped and pulled apart to facilitate the easy opening of the bag. The tie members may then be tied together to form a strong member by which the bag may be picked up and carried. In alternate embodiments the shape of the integral tie members can be modified to create a bag having only the easy open feature with no tie members. A method for making the bag is also described.

摘要翻译： 提供一种热塑性薄膜袋，其具有便于打开袋子的至少两个整体构件。 该袋由热塑性材料的扁平管制成，其可以沿着塌缩管的中心的独立相移的正弦振荡路径而被明显地切断。 袋子可以具有从袋子的垂直中心轴线彼此偏移的两个相对的连接件。 领带构件可以被抓住并拉开，以便于容易打开袋子。 领带构件然后可以被捆绑在一起以形成强力构件，通过该构件可以拾取和携带袋子。 在替代实施例中，一体式连接件的形状可以被修改以产生仅具有没有接合部件的容易打开特征的袋子。 还描述了制造袋子的方法。