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    • 7. 发明授权
    • Thermoplastic bag structure
    • 热塑袋结构
    • US5967663A
    • 1999-10-19
    • US918555
    • 1997-08-22
    • Edward A. VaqueroWilliam P. Belias
    • Edward A. VaqueroWilliam P. Belias
    • B31B23/00B65D30/20
    • B31B23/00B31B2219/146B31B2237/10B31B2237/60
    • A thermoplastic bag structure and method for making and packaging thermoplastic bags such that their tops are easily identified and the bags are easily opened. The method for producing these bags begins with cutting a flattened thermoplastic tube into two portions. At least one of the two portions is then collapsed to form a sheet of material having a pair of thermoplastic layers, a straight folded bottom edge and a pair of top edges, at least one of which has a skewed-cut. Bag side structures are formed in the sheet of material at about bag-width distances apart. The bags are then folded a predetermined number of times, in a direction transverse to the bag side structures, so that the skewed-cut top edge(s) of each of the bags remains exposed.
    • 一种用于制造和包装热塑性袋的热塑性袋结构和方法,使得其顶部容易识别并且袋容易打开。 用于生产这些袋的方法首先将扁平的热塑性管切割成两部分。 然后两个部分中的至少一个被折叠以形成具有一对热塑性层,直的折叠底部边缘和一对顶部边缘的材料片,其中至少一个具有倾斜切割。 袋侧结构以分开的袋宽度的距离形成在材料片材中。 然后将袋子沿横向于袋侧结构的方向折叠预定次数,使得每个袋子的倾斜切割的顶部边缘保持暴露。
    • 10. 发明授权
    • Easy open thermoplastic bag
    • 易开口热塑袋
    • US5611627A
    • 1997-03-18
    • US478122
    • 1995-06-07
    • William P. BeliasEdward A. Vaquero
    • William P. BeliasEdward A. Vaquero
    • B65D33/16
    • B65D33/1608
    • 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. In an alternative embodiment the bag may include linear slitting regions positioned at each bag side edge. These regions facilitate the accurate registration of bag side edge heat seals and weakened areas therebetween. The linear slitting regions are characterized by zones of continuously overlapping bag material.
    • 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。 在替代实施例中,袋可以包括定位在每个袋侧边缘处的线性切割区域。 这些区域有助于袋侧边缘热封的精确配准和它们之间的弱化区域。 线性切割区域的特征在于具有连续重叠的袋材料的区域。