The automatic machine does not need to be adjusted to accommodate a variety of bag widths.
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The Kwik Lok (Yakima, WA) 865 Model C bag closer uses flat, plastic clip, roll-fed closures to close 20-lb bags at speeds to 80 bags/min, and 50-lb bags at 50 bags/min.
The automatic machine does not need to be adjusted to accommodate a variety of bag widths.