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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 9580873 B1

PDFFull Text
Date of Patent:
Feb. 28, 2017

Filed:

Jul. 19, 2013

Multilayered structure comprising fine fiber cellulose layer

Applicant:

Asahi Kasei Fibers Corporation, Osaka-Shi, Osaka, JP;

Inventors:

Hirofumi Ono, Tokyo, JP;

Shuji Takasu, Tokyo, JP;

Atsushi Horii, Tokyo, JP;

Satoru Yoshida, Tokyo, JP;

Assignee:

ASAHI KASEI FIBERS CORPORATION, Osaka-Shi, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner, L.L.P.

Primary Examiner:

Jose Fortuna

Int. Cl.
CPC ...
D21H 27/38 (2006.01); D21H 27/30 (2006.01); B32B 29/02 (2006.01); F28F 3/00 (2006.01); D21H 11/18 (2006.01); D21H 13/08 (2006.01); D21H 13/14 (2006.01); D21H 13/24 (2006.01); D21H 13/26 (2006.01); D21H 15/02 (2006.01); F28F 21/00 (2006.01); F24F 12/00 (2006.01); F28D 9/00 (2006.01); F28D 21/00 (2006.01); B32B 5/02 (2006.01); B32B 5/22 (2006.01); B32B 5/24 (2006.01); B32B 5/26 (2006.01); B32B 29/00 (2006.01); B32B 37/24 (2006.01); D21H 11/12 (2006.01); D21H 21/16 (2006.01); D21H 21/34 (2006.01);
U.S. Cl.
CPC ...
D21H 27/38 (2013.01); B32B 5/022 (2013.01); B32B 5/22 (2013.01); B32B 5/24 (2013.01); B32B 5/26 (2013.01); B32B 29/002 (2013.01); B32B 29/02 (2013.01); B32B 37/24 (2013.01); D21H 11/12 (2013.01); D21H 11/18 (2013.01); D21H 13/08 (2013.01); D21H 13/14 (2013.01); D21H 13/24 (2013.01); D21H 13/26 (2013.01); D21H 15/02 (2013.01); D21H 21/16 (2013.01); D21H 21/34 (2013.01); D21H 27/30 (2013.01); F24F 12/006 (2013.01); F28D 9/00 (2013.01); F28D 21/0014 (2013.01); F28D 21/0015 (2013.01); F28F 3/00 (2013.01); F28F 21/00 (2013.01); B32B 2255/02 (2013.01); B32B 2262/0253 (2013.01); B32B 2262/0261 (2013.01); B32B 2262/0276 (2013.01); B32B 2262/04 (2013.01); B32B 2262/062 (2013.01); B32B 2307/3065 (2013.01); B32B 2307/72 (2013.01); B32B 2307/728 (2013.01); B32B 2307/7242 (2013.01); B32B 2307/73 (2013.01); B32B 2419/00 (2013.01); Y02B 30/563 (2013.01); Y02P 70/24 (2015.11);
Abstract

Provided is a multilayered structure comprising at least one fine cellulose fiber nonwoven fabric layer made of a fine cellulose fiber, wherein the multilayered structure is characterized in that the mean fiber diameter of the fine cellulose fiber forming the fine cellulose fiber non-woven fabric layer is 0.005 to 0.5 μm, and the mean thickness of the multilayered structure is 10 to 200 μm, the density thereof is 0.10 to 0.90 g/cm, and the permeability resistance thereof is 2000 s/100 ml or more. Also provided are an energy recovery ventilation sheet made of this multilayered structure, an energy recovery ventilation element using this energy recovery ventilation sheet as a partitioning material for partitioning two types of air flow of different temperature and/or humidity, and a energy recovery ventilator using this energy recovery ventilation element.

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