| 摘要 |
A method and apparatus for sealing cartons (11) by sticking together facing surfaces of a hinged flap (14) and a wall (17) of each carton by means of a solvent-based, preferably water-based, adhesive, in which the cartons are continuously moved along a line (10) past an adhesive applicator (18) which applies a deposit (20) of adhesive to the under surface of the flap (14), first pressure rollers (21) arranged to bring the flap surface temporarily into contact with the side wall (17) to transfer some of the adhesive (20) to it and to thin out and spread the adhesive on the flap (14), a hot air nozzle (24) which enters within the acute angle formed between the two surfaces when the flap (14) is released from the first pressure rollers (21) and which directs hot air onto the surfaces to effect partial drying of the adhesive, and a second set of pressure rollers (26,27) to press the flap (14) against the side wall (17) to effect final sealing. |
