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Turning bar
The BST turning bar is used wherever a 90° turn in the direction of the web is required, together with some adjustment of the web alignment. The turning bar is installed at an angle of 45° to both the infeed and outfeed direction of the web.
The web winds itself around the turning bar 180° and leaves the guiding device at right-angles to the infeed position.
To correct the web path at the same time the turning bar is moved across the outfeed direction (in other words in line with the infeed direction) according to the guiding signal.
In order to avoid material stress BST turning bars can be supplied with an optional air connection which puts a pro-
tective air cushion between the turning bar and the web.
