| 摘要 |
<p>In a spray gumming unit (2), a gumming device (1) is equipped with an ejector (4) that sprays an adhesive substance and that is connected with a shutter element (8). The shutter element (8) moves towards and away from the ejector (4) between a position where it closes the ejector (4) and in which a pad (11), fixed to one end (9) of it, is in contact with the ejector (4), and a position (A) where the ejector (4) is left open. During the movement of the shutter element (8) and of the pad (11) between the ejector (4) open and closed positions (A, C) , an applicator (15) applies an antiadhesive liquid substance on the pad (11). <IMAGE></p> |
