Package making – Progressively seamed cover web or web folds – With closing of web between package units
Patent
1996-03-14
1997-07-29
Sipos, John
Package making
Progressively seamed cover web or web folds
With closing of web between package units
533737, 219633, 219659, B65B 906
Patent
active
056512392
ABSTRACT:
A sealing device for a packaging material tube has a pair of pressure arms 13 supported by a lift frame 11 each at a lower portion thereof and pivotally movable about respective parallel horizontal axes. A pair of sealing jaws 14 are fixed to the respective pressure arms 13 each at an upper portion of the arm so as to be opposed to each other. A high-frequency heating coil 18 is provided on one of the sealing jaws 14 for induction-heating an aluminum foil layer of the tube T present between the sealing jaws 14 as closed. A transmission-side primary coil 21 is fixedly disposed at one side of the path of vertical movement of the lift frame 11. A receiving-side secondary coil 22 is so disposed as to form a closed electric circuit along with the heating coil 18. The primary coil 21 and the secondary coil 22 are electromagnetically connected when the sealing jaws 14 are closed, and are electromagnetically separated when the jaws 14 are opened.
REFERENCES:
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patent: 4371768 (1983-02-01), Pozna
patent: 4637199 (1987-01-01), Steck et al.
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patent: 5031380 (1991-07-01), Ueda
patent: 5109653 (1992-05-01), Kubis et al.
patent: 5123989 (1992-06-01), Horiishi et al.
Kawano Takafumi
Ueda Michio
Kim Gene L.
Shikoku Kakoki Co. Ltd.
Sipos John
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