EASILY OPENABLE PACKAGING BAG

Title:

EASILY OPENABLE PACKAGING BAG

Document Type and Number:

WIPO Patent Application WO/2004/035415

Kind Code:

A1

Abstract:

Provided are an easily openable packaging bag having excellent sealing ability, capable of being heated by boiling etc., and being easily openable by pulling a tape-like opening piece, sandwiched in a face-butt seal, so as to cut off the bag in a ring shape, and an easily openable packaging bag where the content received in the bag can be taken out by easily opening with a light force a box-shaped plastic film-covering body along the entire periphery of the body. An easily openable packaging bag is characterized as follows. To form the bag, a plastic film (3) is folded, each of both end portions of the film are laid over each other, and thermally fuse-bonded to form a face-butt seal portion (1) of a tubular shape, and both opening ends are thermally fuse-bonded. The bag comprises a tape-like opening piece (2) sandwiched at any one or more portions of the face-butt seal portion, with the tip being projected, and integrally fuse-bonded; easily tearable treatment (5) applied to the outer end edge portion of the face-butt seal portion where both ends in a width direction of the tape-like opening piece is sandwiched; and easily cuttable treatment (6) applied to non fusion-bonded portion nearer to the bag interior side than the face-butt seal portion inner edge end of a film (3-2) on the valley fold side of the face-butt seal located on a line extended in a length direction of the tape-like opening seal folded to a periphery direction of the tube.

Inventors:

MORIYOSHI TATSUMI (JP)
KOYANAGI TADAYUKI (JP)
SASAKI TOORU (JP)
SHINOHARA TOMONARI (JP)
MATSUSHITA TETSUO (JP)

Application Number:

PCT/JP2003/013244

Publication Date:

April 29, 2004

Filing Date:

October 16, 2003

Export Citation:

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Assignee:

HOSOKAWA YOKO KK (JP)
MORIYOSHI TATSUMI (JP)
KOYANAGI TADAYUKI (JP)
SASAKI TOORU (JP)
SHINOHARA TOMONARI (JP)
MATSUSHITA TETSUO (JP)

International Classes:

B65D75/12; B65D75/68; B65D81/34; (IPC1-7): B65D75/68; B65D75/18

Foreign References:

JPH08143061A	1996-06-04
JPH02138142U	1990-11-19
JPS6367273A	1988-03-26
JP2001055248A	2001-02-27
JPH08282729A	1996-10-29
JPH068966A	1994-01-18
JPH0930558A	1997-02-04
JPH09104449A	1997-04-22

Other References: