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    • 1. 发明授权
    • Draw tape machines
    • 画带机
    • US5857953A
    • 1999-01-12
    • US582069
    • 1996-01-02
    • Paul A. SellePeter J. Gietman, Jr.Timothy R. DutterThomas C. JansenFrank M. Slama
    • Paul A. SellePeter J. Gietman, Jr.Timothy R. DutterThomas C. JansenFrank M. Slama
    • B31B19/90B31B1/90
    • B31B19/00B29C65/7852B29C66/135B29C66/1352B31B2219/9025Y10S493/928
    • This invention pertains to draw tape equipment, and methods for incorporating draw tapes into plastic and like bags. In general, a continuous plastic web is slit at a slitting station to form layers, and respective free edges. The web then passes to a hole forming station where holes are punched in the top and bottom layers adjacent the free edges. After the holes are punched, edge regions of the top and bottom layers are separated from each other, followed by forming of hems in the separated layers at hem forming stations arranged in parallel with each other. Concurrent with forming of the hems, continuous draw tapes are fed to the hem forming stations and the hems are formed about the draw tapes. The formed hems, with the draw tapes incorporated therein, optionally pass through first temperature control stations where the temperature of the plastic web is controlled to a desired temperature before hem sealing. The formed hems are then sealed to the main bodies of the respective top and bottom layers. Narrow pressure wheels apply pressure to the hot seals to improve seal quality. The sealed hems optionally pass through second temperature control stations to cool the web. The edge regions of the layers are then rejoined, in face-to-face relationship with each other.
    • 本发明涉及拉带设备,以及将拉带装入塑料袋和类似袋子中的方法。 通常,连续的塑料网在切割台处被切割以形成层和相应的自由边缘。 纸幅然后传送到孔形成站,其中在邻近自由边缘的顶层和底层中冲孔。 在冲孔之后,顶层和底层的边缘区域彼此分离,然后在彼此平行布置的卷边成形站处在分离的层中形成折边。 与形成折边同时,将连续的拉带输送到卷边成型台,绕拉带形成折边。 形成的薄膜,其中并入的拉带可选地通过第一温度控制站,其中塑料网的温度在下封边之前被控制到期望的温度。 然后将形成的薄膜密封到相应的顶层和底层的主体。 狭窄的压力轮对热密封件施加压力,以提高密封质量。 密封的薄片可选地通过第二温度控制站以冷却网。 然后,层的边缘区域以彼此面对面的关系重新结合。
    • 2. 发明授权
    • Draw tape machines and methods
    • 绘制磁带机和方法
    • US5797828A
    • 1998-08-25
    • US582072
    • 1996-01-02
    • Paul A. SellePeter J. Gietman, Jr.Timothy R. DutterThomas C. JansenFrank M. Slama
    • Paul A. SellePeter J. Gietman, Jr.Timothy R. DutterThomas C. JansenFrank M. Slama
    • B31B19/90B31B1/90
    • B31B19/00B31B2219/9025
    • This invention pertains to draw tape equipment, and methods for incorporating draw tapes into plastic and like bags. In general, a continuous plastic web is slit at a slitting station to form layers, and respective free edges. The web then passes to a hole forming station where holes are punched in the top and bottom layers adjacent the free edges. After the holes are punched, edge regions of the top and bottom layers are separated from each other, followed by forming of hems in the separated layers at hem forming stations arranged in parallel with each other. Concurrent with forming of the hems, continuous draw tapes are fed to the hem forming stations and the hems are formed about the draw tapes. The formed hems, with the draw tapes incorporated therein, optionally pass through first temperature control stations where the temperature of the plastic web is controlled to a desired temperature before hem sealing. The formed hems are then sealed to the main bodies of the respective top and bottom layers. Narrow pressure wheels apply pressure to the hot seals to improve seal quality. The sealed hems optionally pass through second temperature control stations to cool the web. The edge regions of the layers are then rejoined, in face-to-face relationship with each other.
    • 本发明涉及拉带设备,以及将拉带装入塑料袋和类似袋子中的方法。 通常,连续的塑料网在切割台处被切割以形成层和相应的自由边缘。 纸幅然后传送到孔形成站,其中在邻近自由边缘的顶层和底层中冲孔。 在冲孔之后,顶层和底层的边缘区域彼此分离,然后在彼此平行布置的卷边成形站处在分离的层中形成折边。 与形成折边同时,将连续的拉带输送到卷边成型台,绕拉带形成折边。 形成的薄膜,其中并入的拉带可选地通过第一温度控制站,其中塑料网的温度在下封边之前被控制到期望的温度。 然后将形成的薄膜密封到相应的顶层和底层的主体。 狭窄的压力轮对热密封件施加压力,以提高密封质量。 密封的薄片可选地通过第二温度控制站以冷却网。 然后,层的边缘区域以彼此面对面的关系重新结合。