Package making – Methods – Enclosing contents within progressively formed web means
Patent
1988-05-05
1990-05-15
Sipos, John
Package making
Methods
Enclosing contents within progressively formed web means
53 55, 53 75, 53550, B65B 906, B65B 5700
Patent
active
049246577
ABSTRACT:
A packing machine includes a supply conveyor arranged for advancing articles to be wrapped; a first motor drivingly connected to the supply conveyor; a second motor arranged for advancing a wrapper sheet codirectionally with the advance of articles; a sealing unit for periodically providing a transverse sealing seam in front of and behind each article subsequent to wrapping the article; and a third motor drivingly connected to the sealing unit. There is provided a circuit arrangement operatively coupled to the sealing unit for regulating a rotational position of the third motor. The circuit arrangement includes a computer having an input connected to the first motor for receiving data on consecutive rotational positions. To the computer there are applied data on dimensional characteristics of the articles and the wrapper sheet. The computer calculates, from the data, synchronous rotary positions of the second and third motors at least during periods when the sealing unit is in contact with the wrapper sheet. The computer applies to the first, second and third motors control signals based on the synchronous rotary positions.
REFERENCES:
patent: 4525977 (1985-07-01), Matt
patent: 4549386 (1985-10-01), Wilson
patent: 4712357 (1987-12-01), Crawford
patent: 4726168 (1988-02-01), Seko
Berti Martin
Frei Max
SIG - Schweizerische Industrie-Gesellschaft
Sipos John
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