Method and an apparatus for retrosealing of packaging...

Details Method and an apparatus for retrosealing of packaging... Method and an apparatus for retrosealing of packaging...

2005-04-29

2009-12-29

Van, Quang T (Department: 3742)

Electric heating

Inductive heating

With heat exchange

C156S272400

Reexamination Certificate

active

07638742

ABSTRACT:
The present invention relates to a method and an apparatus for retrosealing, by means of induction sealing, an intersection zone (12) between two overlap joints (6, 11) in an at least partly formed packaging container (1) comprising a first and a second packaging part (2, 3). The first packaging part (2) is tubular and produced from a sheet of thermoplastically coated packaging material comprising at least one layer of an induction heatable material. The second packaging part (3) is sealed to the first end of the first packaging part (2).

REFERENCES:
patent: 3632943 (1972-01-01), Engler et al.
patent: 3652361 (1972-03-01), Leatherman
patent: 3923585 (1975-12-01), Vouillemin
patent: 5013878 (1991-05-01), Fries, Jr.
patent: 5889263 (1999-03-01), Andersson
patent: 0 480 405 (1992-04-01), None
patent: 61-120519 (1986-07-01), None
patent: 502 829 (1996-01-01), None
patent: WO 2004/054786 (2004-07-01), None

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