COMPRESSIVE ACCOMMODATION BAG HAVING NON−RETURN VALVE FUNCTION

Title:

COMPRESSIVE ACCOMMODATION BAG HAVING NON−RETURN VALVE FUNCTION

Document Type and Number:

WIPO Patent Application WO/2004/026717

Kind Code:

A1

Abstract:

A compressive accommodation bag comprising a substantially square bag body (11) formed of synthetic resin films (12 and 13) with an opening part (14) for taking in&sol taking out an article by providing an opening&sol closing zipper (15) on one side thereof. A non−return valve part (20) is provided on right−triangle parts on both corner parts on the side opposite to the opening part (14) of the bag body (11). This non−return valve part (20) comprises an exhaust passage (22) forming a flat sealed condition by welded parts (f and g) of the films (12 and 13) and a welded part (21), and the exhaust passage (22) introduces the air inside the bag body (11) from a diagonal side part of the right triangle and exhausts the air outside as shown by an arrow (d). In addition, the non−return valve part (20) is in contact with an article accommodation part of the bag body (11). A thin and flexible film may be inserted between the films (12 and 13) so that a non−return valve is provided therein.

Inventors:

ISHIZAKI AKIRA (JP)

Application Number:

PCT/JP2002/009003

Publication Date:

April 01, 2004

Filing Date:

September 04, 2002

Export Citation:

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Assignee:

ISHIZAKI SHIZAI KK (JP)
ISHIZAKI AKIRA (JP)
KABUSHIKIKAISHA KASHIWARASEITA (JP)
APPEAL YK (JP)

International Classes:

B65D81/20; B65D85/18; (IPC1-7): B65D30/24; B65D81/20; B65D85/18

Foreign References:

JPH0427749U	1992-03-05
JP3025235U	1996-06-11

Other References: