Title:
NONWOVEN FABRIC FILTER
Document Type and Number:
WIPO Patent Application WO/2018/221063
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a nonwoven fabric filter with high shape retention properties such that crushing in the direction of thickness is not easy, even if wind pressure is applied, by suppressing increases in pressure loss and increasing dirt holding capacity. Provided is a nonwoven fabric filter provided with microfibers having a smaller fiber diameter than the average fiber diameter of fibers constituting a nonwoven fabric base material in the direction of the nonwoven fabric base material thickness, wherein the microfibers are oriented with a depth of 10 – 100% with respect to the apparent thickness of the nonwoven fabric base material, and a net-like part is formed by the microfibers or a combination of the microfibers and the fibers constituting the nonwoven fabric base material.
Inventors:
NISHITANI TAKASHI (JP)
YANAOKA NAOKI (JP)
YANAOKA NAOKI (JP)
Application Number:
PCT/JP2018/016211
Publication Date:
December 06, 2018
Filing Date:
April 19, 2018
Export Citation:
Assignee:
JAPAN VILENE CO LTD (JP)
International Classes:
B01D39/16; D04H1/485; D04H1/498; D04H1/559
Foreign References:
| JP2012000550A | 2012-01-05 | |||
| JP2017080705A | 2017-05-18 | |||
| JP2009190269A | 2009-08-27 | |||
| JP2007245712A | 2007-09-27 | |||
| JP2010509056A | 2010-03-25 | |||
| JP2013022570A | 2013-02-04 |
Attorney, Agent or Firm:
SAKAMOTO Tomohiro (JP)
Download PDF: