Method and device for manufacturing packages

Electric heating – Inductive heating – With heat exchange

Reexamination Certificate

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Details

C219S634000, C219S672000, C219S676000, C156S069000, C156S272400, C156S380200, C053S477000

Reexamination Certificate

active

07129450

ABSTRACT:
A method and a device for manufacturing packages are provided. The method comprises providing a tubular first package part of a sheet of thermoplastic coated packaging material including at least one layer of an induction heatable material. The first package part has a sealed first joint between two mutually opposing edge sections of the sheet. The method further comprises joining together the first package part and a second package part by a second joint, the first and the second joint intersecting each other. The method further comprises arranging induction heating means including at least two conductors extending along each other, so that the conductors extend along the second joint and sealing the second joint by feeding an inducing current through the induction heating means. The inducing current is conducted by the conductors along the second joint in opposite directions in said at least two conductors.

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patent: 4340801 (1982-07-01), Ishibashi et al.
patent: 5013878 (1991-05-01), Fries, Jr.
patent: 5526561 (1996-06-01), McGaffigan
patent: 5889263 (1999-03-01), Andersson
patent: 6079185 (2000-06-01), Palaniappan et al.
patent: 0426067 (1991-05-01), None
patent: 0480405 (1992-04-01), None
patent: 0642914 (1995-03-01), None
patent: 502829 (1996-01-01), None

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