Title:
VACUUM SUCTION STRUCTURE FOR CHECK VALVE-ATTACHED PACKAGE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2019/221290
Kind Code:
A1
Abstract:
[Problem] To provide a vacuum suction structure for a check valve-attached package material, the structure being capable of complete deaeration to the end even when the contents are a powdery substance or a granular substance, and in particular when the contents are a powdery substance. [Solution] This vacuum suction structure for a check valve-attached package material is characterized by being provided with a breathable bag that contains contents, and a spacer that is embedded in the breathable bag, wherein the breathable bag having the spacer embedded therein is contained in a film-like or sheet-like package material, and deaeration is performed by vacuum-suctioning the inside of the package so as to discharge the air included in the contents via the breathable bag.
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Inventors:
HAGIHARA TADASHI (JP)
Application Number:
PCT/JP2019/019772
Publication Date:
November 21, 2019
Filing Date:
May 17, 2019
Export Citation:
Assignee:
HAGY TECH CO LTD (JP)
International Classes:
B65D30/24; F16K15/14
Foreign References:
| JP2009190775A | 2009-08-27 | |||
| JP2002065782A | 2002-03-05 | |||
| JPS52103288A | 1977-08-30 | |||
| JP2000325429A | 2000-11-28 | |||
| JPH11314645A | 1999-11-16 | |||
| JP2006056595A | 2006-03-02 |
Attorney, Agent or Firm:
DOBASHI Hiroshi (JP)
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