Title:
MASK, FILTER BAG FOR MASK, AND VENTILATION FILTERING METHOD
Document Type and Number:
WIPO Patent Application WO/2016/042623
Kind Code:
A1
Abstract:
[Problem] To maintain trapping efficiency, avoid interfering with wearers' breathing, and prevent the inflow of unfiltered air. [Solution] A mask is provided with: a pair of support strings (3) suspended from the ears of a wearer (5); a bag-like mask body (2) held by the support strings (3) in close contact with the lips of the wearer (5); and a middle-layer sheet (22) disposed inside the mask body (2), wherein many granular porous bodies (4) are filled inside the mask body (2) between at least the lip-side of the middle-layer sheet (22) and a contact surface of an inner-layer sheet (21) of the mask body (2), said contact surface being in close contact with the lips.
Inventors:
ONO SIGERU (JP)
Application Number:
PCT/JP2014/074571
Publication Date:
March 24, 2016
Filing Date:
September 17, 2014
Export Citation:
Assignee:
S I T CO LTD (JP)
International Classes:
A62B18/02
Foreign References:
| JP2005192983A | 2005-07-21 | |||
| JP2013063266A | 2013-04-11 | |||
| JP2005218613A | 2005-08-18 |
Attorney, Agent or Firm:
SASAKI Atsurou (JP)
Atsuro Sasaki (JP)
Atsuro Sasaki (JP)
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