Process and a device for closing filled folded-carton packages

US5924267A · kind A · utility

Assignee

• SIG Combibloc, Inc. · US

Inventors

• Hans Bömer · Erkrath, DE
• Hans-Willi Mainz · Heinsberg, DE

Key dates

• Filing date: Sep 26, 1997
• Grant date: Jul 20, 1999
• Expiry date: Sep 26, 2017

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B29C66/8322
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

Shown and described is a process for closing filled open-top folded-carton packages (1) made from bottom-sealed tubular sections, whereby closing is by ultrasonic welding by means of an anvil (5) comprising a recess for the longitudinal seam (2) of the folded-carton package (1), and a sonotrode (6), and a device for filling such folded-carton packages (1) and closing the gable seam (8). Optimal tightness of the filled folded-carton packages (1) is achieved by position-acquisition of the longitudinal seam (2) of every folded-carton package (1) in relation to the cell transporting this folded-carton package (1), alignment of the anvil across the direction of transport of the folded-carton packages (1) until the recess for the longitudinal seam (2) matches the actual position of the longitudinal seam (2) of the next folded-carton package (1) to be closed, and sealing and folding over the gable seam (8) or the ridge seam respectively. The respective device is characterized in that a device for position-acquisition of the longitudinal seam (2) of a folded-carton package (1) in relation to the cell transporting the folded-carton package (1) is provided; that the anvil (5) is adjustable a…