Title:
透湿防水シート
Document Type and Number:
Japanese Patent JP7079442
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a moisture permeable waterproof sheet which has infrared reflectivity over a long period of time while having waterproofness, moisture permeability and air permeable infrared reflectivity equivalent to or higher than conventional one.SOLUTION: A moisture permeable waterproof sheet includes a resin film 10, an aluminum foil 20 and a non-woven fabric 40 in this order, where the aluminum foil and the resin film have a plurality of communicating through holes 50, an opening ratio of the through holes is 1.2% or more and 7.0% or less, in the non-woven fabric, span bond layers 42 and 42 are stacked on both surfaces of a melt-blown layer 44, and the melt-blown layer has a density of 0.26 g/cmor more and 0.7 g/cmor less.SELECTED DRAWING: Figure 1
Inventors:
Hisao Karasawa
Keiichi Nakagawa
Youichi Sato
Ken Yamashita
Kiyotaka Tsukagoshi
Keiichi Nakagawa
Youichi Sato
Ken Yamashita
Kiyotaka Tsukagoshi
Application Number:
JP2018039249A
Publication Date:
June 02, 2022
Filing Date:
March 06, 2018
Export Citation:
Assignee:
Toyo Aluminum K.K.
Jsoft Corporation
KST Co., Ltd.
Jsoft Corporation
KST Co., Ltd.
International Classes:
B32B15/09; B32B15/14; B32B15/20; E04B1/66
Domestic Patent References:
| JP2011219918A | ||||
| JP7011716A | ||||
| JP5193037A | ||||
| JP6200462A | ||||
| JP2002069824A | ||||
| JP2005059506A | ||||
| JP5079130A | ||||
| JP8193390A | ||||
| JP2009275415A |
Foreign References:
| WO2004094136A1 |
Attorney, Agent or Firm:
Maeda patent office