MULTI-BAG AND METHOD OF PRODUCING THE SAME, AND MULTI-BAG FOR BAG MAKING AND FILLING

Title:

MULTI-BAG AND METHOD OF PRODUCING THE SAME, AND MULTI-BAG FOR BAG MAKING AND FILLING

Document Type and Number:

WIPO Patent Application WO/2003/097472

Kind Code:

A1

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.

Inventors:

TSUKANOME KAZUHIKO (JP)
KATO YOSHITAKE (JP)
MATSUNAGA SHINJI (JP)

Application Number:

PCT/JP2003/006044

Publication Date:

November 27, 2003

Filing Date:

May 15, 2003

Export Citation:

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Assignee:

KYORAKU CO LTD (JP)
TSUKANOME KAZUHIKO (JP)
KATO YOSHITAKE (JP)
MATSUNAGA SHINJI (JP)

International Classes:

B29C65/00; B31B23/60; B31B23/74; B31B39/00; B31B39/84; B65D30/08; B65D33/38; B29C48/10; B29C48/16; B29C53/40; B29C65/02; B29C65/76; (IPC1-7): B65D30/08

Foreign References:

JPS5010283Y1	1975-04-01
JPS4015910Y1	1965-06-08
JPS61142143A	1986-06-30
JPS63123448U	1988-08-11
JPH07187202A	1995-07-25
JPH1035602A	1998-02-10
JPS5398013U	1978-08-09
JPH08119291A	1996-05-14
JP2000185743A	2000-07-04
JPH08301296A	1996-11-19
JPH09254301A	1997-09-30
JPH09294530A	1997-11-18
JPH1035602A	1998-02-10
JP2003026234A	2003-01-29

Other References: