Abstract: Apparatus and method for flexographic printing wherein a press having a frame is equipped with an ink transfer roll, a subframe is movably mounted on the frame adjacent the transfer roll, a holder being movably mounted on the subframe, the holder being equipped with upper and lower doctor blades engaging the transfer roll and end seals defining with the roll a liquid chamber, and an ink inlet and an ink outlet in the holder, the subframe having portions clamping the doctor blades to the holder, the subframe being pivotally mounted on the frame for movement away from the ink transfer roll, the subframe being equipped with a cylinder for moving the holder so as to unclamp the doctor blades for replacement.

Abstract: A device for zig-zag folding a series of web segments connected at transverse lines of perforation and for separating a pre-determined series of the web segments into stacks having co-acting folding rolls adapted to deliver a zig-zag folded web, a pair of opposed cantilevered plates movably mounted adjacent the folding rolls to provide alternative support for a developing stack and to prevent concavity, and means for moving the plates.

Abstract: Apparatus for handling a stream of flat, flexible web products where first and second gripper means are disposed to intersect said stream for tandem operation, and with means operably associated with the first gripping means for deactivating the same after a predetermined number of web products has been gripped.

Abstract: An apparatus for transversely sealing layers of thermoplastic material wherein platen-equipped upper and lower cross bar conveyors are provided for the sealing, there is provided means for jogging the thermoplastic web material incident to heat-up of the platens to prevent scorching of the web and means for stretching the layered web during sealing to overcome the tendency for differential longitudinal shrinkage.

Abstract: Apparatus for producing business forms made up of a plurality of webs including a plurality of towers, one for each web with each web being equipped with a plurality of vertically related modules for imparting characteristics to the webs, each module being adapted to create a characteristic in the web traveling therepast, and means associated with each tower for changing at least one characteristic in the web traveling therepast.