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    • 52. 发明申请
    • METHOD AND APPARATUS FOR METERED PRE-STRETCH FILM DELIVERY
    • 用于计量的预拉伸膜输送的方法和装置
    • WO2007100596A3
    • 2008-04-03
    • PCT/US2007004581
    • 2007-02-23
    • LANTECH COM LLCLANCASTER PETER R IIIELDRIDGE DAVID EHALL WILLIE MARTINJOHNSON RICHARD LMARTIN CURTIS WMOORE PHILLIP RNORRIS JOSEPH DONALD
    • LANCASTER PETER R IIIELDRIDGE DAVID EHALL WILLIE MARTINJOHNSON RICHARD LMARTIN CURTIS WMOORE PHILLIP RNORRIS JOSEPH DONALD
    • B65B11/02B65B11/00B65B11/04
    • B65B11/025B65B11/006B65B11/045B65B57/04B65B2011/002B65B2210/14B65B2210/16B65B2210/18B65B2210/20
    • The present invention provides a method and apparatus for dispensing a predetermined substantially constant length of pre-stretched packaging material based upon load girth. Based upon the girth of the load to be wrapped, an amount of pre-stretched packaging material to be dispensed for each revolution of relative rotation between a packaging material dispenser and the load is determined. A rotational drive system used to provide the relative rotation is linked to a pre-stretch assembly portion of the packaging material dispenser. The linkage may be mechanical or electrical. The linkage controls a ratio of the rotational speed to the pre-stretch assembly dispensing speed, such that the predetermined substantially constant length of pre-stretched packaging material is dispensed for each revolution of the packaging material dispenser relative to the load regardless of the speed of the rotational drive. In the case of a mechanical linkage, the linkage also connects the rotational drive to the pre-stretch assembly portion such that the rotational drive also drives the pre-stretch assembly portion. Good wrapping performance in terms of load containment (wrap force) and optimum packaging material use is obtained by dispensing a length of pre-stretched packaging material that is between approximately 90% and approximately 120% of load girth.
    • 本发明提供一种用于基于载荷环来分配预定的基本上恒定长度的预拉伸包装材料的方法和装置。 基于待包装的负载的周长,确定在包装材料分配器和负载之间的相对旋转的每转一周中要分配的一定量的预拉伸包装材料。 用于提供相对旋转的旋转驱动系统连接到包装材料分配器的预拉伸组件部分。 连接件可以是机械的或电的。 联动控制旋转速度与预拉伸组件分配速度的比率,使得预定的基本上恒定长度的预拉伸包装材料相对于负载分配用于包装材料分配器相对于负载的每转,而与 旋转驱动。 在机械联动的情况下,连杆还将旋转驱动器连接到预拉伸组件部分,使得旋转驱动器也驱动预拉伸组件部分。 通过分配一定长度的预拉伸包装材料,在负载围绕(包裹力)和最佳包装材料使用方面具有良好的包装性能。