Title:
ELECTRET FIBER SHEET
Document Type and Number:
WIPO Patent Application WO/2018/105546
Kind Code:
A1
Abstract:
The present invention provides an electret fiber sheet having superior recovery of airflow volume by heat treatment and having high airflow. This electret fiber sheet is a nonwoven fabric formed from long fibers that are formed from a thermoplastic resin and have an average single fiber diameter of 0.1 – 8.0 µm, wherein the bulk density of the nonwoven fabric is 0.05 – 0.30 g/cm3 and the long fibers contain a crystal nucleating agent at 0.005 – 1.0% by mass.
Inventors:
INABA SACHIO (JP)
IYAMA YUJI (JP)
KOBAYASHI TAKUJI (JP)
IYAMA YUJI (JP)
KOBAYASHI TAKUJI (JP)
Application Number:
PCT/JP2017/043432
Publication Date:
June 14, 2018
Filing Date:
December 04, 2017
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
D04H3/007; B01D39/16
Foreign References:
| JP2004066026A | 2004-03-04 | |||
| JP2004058048A | 2004-02-26 | |||
| JP2005218930A | 2005-08-18 | |||
| JP2012239995A | 2012-12-10 | |||
| US20130012091A1 | 2013-01-10 | |||
| US6969484B2 | 2005-11-29 | |||
| US6123752A | 2000-09-26 |
Other References:
IRWIN HUTTON: "Handbook of Nonwoven textiles", 2007, WP, article "3.4 Characteristics and properties of melt-blown webs", pages: 79 - 81, XP055887872
IRWIN HUTTON: "Handbook of Nonwoven Filter Media", 2007, WP, article "6.4 Caliper or Thickness", pages: 247, XP055887873
R. CHAPMAN: "Applications of nonwovens in technical textiles", 2010, WP, article "2.6.2 Air permeability", pages: 32 - 33, XP055887875
See also references of EP 3553214A4
IRWIN HUTTON: "Handbook of Nonwoven Filter Media", 2007, WP, article "6.4 Caliper or Thickness", pages: 247, XP055887873
R. CHAPMAN: "Applications of nonwovens in technical textiles", 2010, WP, article "2.6.2 Air permeability", pages: 32 - 33, XP055887875
See also references of EP 3553214A4
Download PDF: