Multi-bag and method of producing the same, and multi-bag for bag-making and filling
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United States of America Patent
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Issued Date -
Oct 6, 2005
app pub date -
Jun 9, 2005
filing date -
May 15, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A multi-bag comprises a multi-film made by superposing at least an inner film and an outer film and sealing the cylindrically curved superposed region to form a back seal. The multi-film constituting the multi-bag is a double film formed by flattening a tube-like film into a two-layer form, with the opposite end edges, which are parallel with the direction of extrusion, continuing to each other. The multi-bag is formed in a sealed state by a back seal, a planar seal at one end, and a planar seal at the other end. The supply system for the multi-film may be such that one system is prepared for each double so as to simplify the device. Further, in the film supply process, it is possible to obtain a multi-bag of high quality without applying a shift-preventive means to between the multi-films.
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