Method and apparatus for opening bags while maintaining a continuous strip of bag precursors
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United States of America Patent
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Sep 22, 2015
Issued Date -
N/A
app pub date -
Oct 31, 2014
filing date -
Aug 21, 2012
priority date (Note) -
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Abstract
Transforming machines for changing a strip of unopened bag precursors into open bag precursors are disclosed that include a drive motor, a separation station, a sensor electrically connected to a controller that is electrically connected to components of the separation station. The separation station includes a first roller, a separation roller driven by the drive motor, and a pressure device having an actuator selectively activating the pressure device to apply pressure to the strip of unopened bag precursors passing over the first roller. In operation, the controller, based on a signal from the sensor, determines when perforations are located in a gap between the pressure device and the separation roller and at that time signals the actuator to activate the pressure device, with the drive motor driving the separation roller, thereby separating the perforations in a first film layer, but not the perforations in a second film layer.
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