Manufacturing container or tube from paper; or other manufacturi – Container or tube erecting – opening – or collapsing – By direct application of vacuum or fluid pressure
Patent
1994-10-03
1996-07-02
Lavinder, Jack W.
Manufacturing container or tube from paper; or other manufacturi
Container or tube erecting, opening, or collapsing
By direct application of vacuum or fluid pressure
493318, 493319, 53458, 53566, B31B 378, B31B 152, B65G 1510
Patent
active
055316611
ABSTRACT:
A method and means for opening a collapsed rectilinear carrier sleeve. As the collapsed sleeve is moved through a packaging machine it is partially opened so that the leading panel extends at an angle to the horizontal. A continuous upward force is then delivered to the leading panel to cause the leading panel to pivot up about its upstream fold line until it reaches the vertical. The collapsed sleeve is partially opened by elevating side flaps connected to an upper panel to cause the upper panel to be elevated. One way of accomplishing this is to cause the upper flaps to ride up over a fixed cam surface while lower flaps connected to a lower panel move under the cam to prevent the lower panel from moving in an upward direction.
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Day Christopher W.
Lavinder Jack W.
Riverwood International Corporation
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