| 摘要 |
A VACUUM DRIVE ASSEMBLY Abstract A drive assembly (10) to drive packaging film for delivery to a packaging machine. The assembly (10) includes an elongated endless flexible belt (11) with a plurality of teeth (16) that are used to drive the belt (11). The teeth (16) are arranged in rows along the longitudinal edges of the belt (11). Between the rows of teeth (16) is a row of apertures (23) that communicates with a gallery (20). ''CA Cy~ |
