Packaging machine

Details Packaging machine Packaging machine

2007-11-13

2007-11-13

Crawford, Gene O. (Department: 3654)

Advancing material of indeterminate length

By orbitally traveling material-engaging surface

On endless belt or chain

C226S170000, C053S511000, C053S051000

Reexamination Certificate

active

10865668

ABSTRACT:
The present invention relates to a packaging machine which has transport means in the form of two transport chains (5, 6) for lateral grasping and transporting of a length of material (7) consisting of packaging material. In particular with longer plants above approximately 10 meters in transport length the stretching property of the transport chains owing to the load has a marked effect on the precision of the transport distance. This results in fluctuations of the transport distance between the two transport chains and therefore distortions of the length of material, which, depending on the type of packaging material, can even lead to tearing of the length of material. In order to minimize these fluctuations, the first transport means (5) has a first engagement element (10) engaging in the first transport means (5) and the second transport means (6) a second engagement element (11) engaging in the second transport means (6), the first engagement element (10) being coupled to the second engagement element (11) in such a way that the two engagement elements are synchronized.

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