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1. (WO2018221063) NONWOVEN FABRIC FILTER

Pub. No.:    WO/2018/221063    International Application No.:    PCT/JP2018/016211
Publication Date: Fri Dec 07 00:59:59 CET 2018 International Filing Date: Fri Apr 20 01:59:59 CEST 2018
IPC: B01D 39/16
D04H 1/485
D04H 1/498
D04H 1/559
Applicants: JAPAN VILENE COMPANY, LTD.
日本バイリーン株式会社
Inventors: NISHITANI Takashi
西谷 崇
YANAOKA Naoki
柳岡 直樹
Title: NONWOVEN FABRIC FILTER
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.