| 主权项 |
1. An apparatus for forming a plurality of flexible pouches from a continuous web of film having an interior surface, an opposite exterior surface, and a plurality of registration marks spaced a predetermined distance apart, said apparatus comprising:
a film displacement mechanism having a pair of vertically oriented rollers that rollingly engage with the film, a base member, a first rod, a roller support member, and a motor attached to said base member, said pair of vertically oriented rollers are rotatably attached to said roller support member, said first rod having a proximate end and a distal end, said proximate end of said first rod is secured to said motor and said distal end of said first rod is pivotally attached to said roller support member, said motor rotates in a first direction and a second direction, opposite said first direction, to adjust the tension in the film by horizontally displacing said pair of vertically oriented rollers; a registration mark sensor positioned upstream of said film displacement mechanism, said registration mark sensor configured to detect one of the plurality of registration marks; and a controller receives a signal from said registration mark sensor and said controller controls said motor to rotate so as to horizontally displace the film based on said signal from said registration mark sensor. |
