Adhesive applicator for corrugated cardboard machine - has continuous flow device to avoid adhesive gelling

摘要

The device for applying adhesive in a corrugated cardboard machine has heated forming rolls (2). Adhesive (P) is supplied from a pump (21) and flows continuously along a channel (13) to the applicator roll (3). Guide plates (9) and (10) provide adjustment for the application width and can be locked in position by a bolt (18). A support (6) can be moved vertically to adjust the slope of the base plate (4). The amount of adhesive on the applicator roll (3) is adjusted by setting the gap between it and a second roll (27). Excess adhesive is collected in a trough (25) and returned to the adhesive tank through a pipe (26). Adhesive is kept in circulation and gelling is avoided.