| 摘要 |
A horizontal packaging machine ( 10 ) for making fluid-tight packages ( 11 ) equipped with zip closure ( 15 ) comprises: at least one unit ( 12 ) for unwinding a film ( 13 ) of synthetic material for packaging a series of products ( 18 ); at least one unit ( 14 ) for unreeling a pair of tapes ( 15 ) to form a zip closure; a shaping tunnel ( 16 ) located downstream of the film ( 13 ) unreeling unit ( 12 ); a sealing unit ( 20 ) located downstream of the shaping tunnel ( 16 ); Downstream of the sealing unit ( 20 ), the machine comprises a power-driven film feed roller ( 21 ) designed to apply a uniform pulling force on the film ( 13 ) which is unwound and fed into the sealing unit ( 20 ). |
