| 摘要 |
A film feed device for a form, fill and seal packaging machine includes front and rear rolls of film which are individually unwound and fed to the packaging machine via a drive assembly which contacts the rolls and rotates the same independent of other film feed mechanisms on the packaging machine. The drive assemblies contain motors which can be further controlled with sensing devices capable of sensing both when the film has been exhausted from the film roll and when the rate of output of the film from the film rolls by the drive assemblies is greater than the rate of further processing of the film in subsequent steps on the form, fill and seal packaging machine.
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