Search:

My experience is very similar to yours, see if this cnc strip brush can help you.http://www.aoqunbrush.com/conveyor-track-closeout-side-belt-strip-brushes_p111.html

I think the filter brush can help you，http://www.aoqunbrush.com/filter-brushes_c31

This can solve the dust proof problem http://www.aoqunbrush.com/weather-strip-nylon-brush-seal_p73.html