Patent · US Active

Packaging machine with dynamic chain tension

US8985423B2 · kind B2 · utility

4Cited by

7References

21Claims

0Family size

Assignee

MULTIVAC SEPP HAGGENMUELLER GMBH & CO. KG · DE

Inventors

Elmar Ehrmann · Altusried, DE
Ivo Ruzic · Kempten, DE

Key dates

Filing date	Sep 4, 2009
Grant date	Mar 24, 2015
Priority date	—
Expiry date	Jan 12, 2032

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65H23/188
WIPO fieldHandling
WIPO sectorMechanical engineering

Abstract

The invention relates to a packaging machine, in particular a thermoformer, traysealer, comprising at least two transport chains for transporting a web of material, such as a film or the like. The packaging machine is characterized in that sensor means are provided for detecting the chain length and/or the chain pitch and/or the chain tension of the transport chains, means being provided for stretching and/or relaxing at least one individual transport chain, and control means being provided for adapting different lengths or chain pitches of two transport chains by stretching and/or relaxing at least one transport chain in a controlled manner.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.