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Title:
BAG BODY CHECK VALVE STRUCTURE, AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2016/080171
Kind Code:
A1
Abstract:
Provided is a check valve structure with which a fluid is capable of satisfactorily opening the valve and passing through the valve during forward flow. In particular, provided are a bag body check valve structure in which the entire check valve is disposed inside a sealed bag so as to be able to accommodate deformation of a valve sheet of the check valve when pressure is applied in the thickness direction of the sheet, and a method for manufacturing the same. The bag body check valve structure is provided with: a bag sheet (3) constituting a bag body (2); and a check valve (1) made of a sheet and affixed to the bag sheet. The check valve (1) is provided with a valve sheet (51), a flow-passageway-forming sheet (21), and a base sheet (31), and may also include a filter sheet (41) as needed. The valve sheet (51) has an upper end side affixed by means of a valve sheet affixing portion (71), and a lower end side which moves in a thickness direction to open or close the valve. An inlet (11) is disposed above the valve sheet affixing portion (71), and an outlet (12) is disposed below the valve sheet affixing portion. A deformed portion (81) where the sheet itself protrudes to the rear is formed in the sheets constituting the check valve (1) and the bag sheet (3), on the upstream side of the valve sheet affixing portion (71), and in particular in a portion including the inlet (11).

Inventors:
TANAKA Mikio (386-3, Ichinomoto-cho Tenri-sh, Nara 04, 〒6320004, JP)
Application Number:
JP2015/080529
Publication Date:
May 26, 2016
Filing Date:
October 29, 2015
Export Citation:
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Assignee:
TANAKA TECHNICAL CORPORATION (386-3, Ichinomoto-chou Tenri-shi Nara, 04, 〒6320004, JP)
International Classes:
B65D30/24; B31B1/84; F16K15/16
Foreign References:
JP4761408B12011-08-31
JP2014028633A2014-02-13
Attorney, Agent or Firm:
SAMEJIMA Takenobu (Shinmachi Bldg. 905, 1-2-13 Shinmachi, Nishi-ku, Osaka-sh, Osaka 13, 〒5500013, JP)
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