STRUCTURE OF AIR VENT PASSAGE OF SEALED BAG, SEALED BAG, AND METHOD OF MANUFACTURING SEALED BAG

Title:

STRUCTURE OF AIR VENT PASSAGE OF SEALED BAG, SEALED BAG, AND METHOD OF MANUFACTURING SEALED BAG

Document Type and Number:

WIPO Patent Application WO/2006/070467

Kind Code:

A1

Abstract:

A structure of an air vent passage of a sealed bag used for the sealed bag having a sealed part sealable in an airtight state, the sealed bag, and a method of manufacturing the sealed bag. In the structure, at least two sheets of valve element sheets (31) as a set are longitudinally stacked on each other and disposed between bag sheets (11) and (12). There are two or more fitted portions (C1) and (C2) on each set of valve units (3u) where one of the valve element sheets (31) is fitted to the bag sheets (11) and (12) or the other of the valve element sheets (31) facing the fitted surface (31a) of the valve element sheets (31). The structure is characterized in that the combination of the bag sheets (11) and (12) with the valve element sheets (31) or the combination of the valve element sheets (31) with each other forming the fitted portions (C1) and (C2) are different from each other for each of the fitted portions (C1) and (C2).

Inventors:

OOTSUBO RYOUICHI (JP)
TANAKA KAZUYA (JP)

Application Number:

PCT/JP2004/019627

Publication Date:

July 06, 2006

Filing Date:

December 28, 2004

Export Citation:

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Assignee:

TANAKA MIKIO (JP)
TANAKA HISASHI (JP)
OOTSUBO RYOUICHI (JP)
TANAKA KAZUYA (JP)

International Classes:

B31B50/64; (IPC1-7): B65D30/24

Foreign References:

JPH09290841A	1997-11-11
JPS4322542B1
JPH07309351A	1995-11-28
JPH11216784A	1999-08-10

Attorney, Agent or Firm:

Samejima, Takenobu (2F 7-3, Kitahorie 1-chome, Nishi-k, Osaka-shi Osaka 14, JP)

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