Vertical bag form-fill-seal packaging method
AssigneeIshida Co., Ltd.
InventorsSeisaku Iwasa, Masao Fukuda, Yoshinobu Shimomae
Life of this patent
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Abstract
The present invention provides a first transfer unit instead of a stationary chute. The first drive unit drives the first transfer unit and is controlled to maintain a bag ejection interval or bag posture. Thus, variation of the bag-to-bag pitch and bag posture even in a high-speed operation with an improved bag-forming capacity is prevented.
Claims20
A method of forming a plurality of bags with items filled therein and transferring the bags to an external device, comprising steps of:
- forming bags from a film while filling the bags with items;
- severing each of the bags;
- ejecting the severed bags one by one onto a first transfer unit;
- carrying the bags diagonally downward with the first transfer unit, a speed at which the first transfer unit carries the bags being controlled to be faster as an ejection interval at which the first transfer unit receives the severed bags becomes shorter;
- ejecting the bags from the first transfer unit onto a second transfer unit;
- carrying the bags with the second transfer unit in a direction not parallel to the direction in which the first transfer unit carries the bags;
- and
- ejecting the bags from the second transfer unit onto the external device, ejection intervals at which the second transfer unit ejects the bags onto the external device being substantially even.
A method of forming a plurality of bags with items filled therein and transferring the bags to an external device, comprising steps of:
- forming bags from a film while filling the bags with items;
- severing each of the bags;
- ejecting the severed bags one by one onto a first transfer unit, the first transfer unit including a pair of belts;
- carrying the bags downward with the first transfer unit while sandwiching the bags with the pair of belts, a speed at which the first transfer unit carries the bags being controlled to be faster as an ejection interval at which the first transfer unit receives the severed bags becomes shorter;
- ejecting the bags from the first transfer unit onto a second transfer unit;
- carrying the bags with the second transfer unit in a direction not parallel to the direction in which the first transfer unit carries the bags;
- and
- ejecting the bags from the second transfer unit onto the external device, ejection intervals at which the second transfer unit ejects the bags onto the external device being substantially even.
Dependencies are inferred from the claim text.