Title:
FRESHNESS HOLDING CONTAINER, FRESHNESS HOLDING CONTAINER CONSTITUENT MEMBER AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2020/009036
Kind Code:
A1
Abstract:
Provided are a freshness holding container which can keep the freshness of contents for a long period of time with very little inflow of oxygen from the outside, a freshness holding container constituting member, and a method for manufacturing the same. A freshness holding container (100) has a ventilation part, wherein the ventilation part has a band-shaped joining region having a width of 5-15 mm in which two ends of the films (106a, 106b) are overlapped and joined, the joining region is configured of a band-shaped ultrasonic joining portion (108) by which two end portions of the film are joined to each other, a non-joining portion in which the overlapping end portions of the films are not joined together is disposed in the ultrasonic joining portion, the non-joining portion constitutes a non-linear air passage (110) that communicates the internal space of the container and the outside of the container, and the air passage has a width W of 0.2 mm ≤ W ≤ 3 mm and a length L of 20 mm ≤ L ≤ 50 mm.
Inventors:
WATANABE TORU (JP)
Application Number:
PCT/JP2019/025914
Publication Date:
January 09, 2020
Filing Date:
June 28, 2019
Export Citation:
Assignee:
W & CO (JP)
International Classes:
B65D81/26
Domestic Patent References:
| WO2018034344A1 | 2018-02-22 | |||
| WO2009090674A2 | 2009-07-23 |
Foreign References:
| JPH11240579A | 1999-09-07 | |||
| JP2018016403A | 2018-02-01 | |||
| JP2001354210A | 2001-12-25 | |||
| JPH0840466A | 1996-02-13 | |||
| JPS62174039U | 1987-11-05 | |||
| JPH06255692A | 1994-09-13 | |||
| JP2003081352A | 2003-03-19 |
Attorney, Agent or Firm:
TANAKA Shinichiro et al. (JP)
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