Title:
長繊維不織布およびそれを用いたフィルター補強材
Document Type and Number:
Japanese Patent JP7287385
Kind Code:
B2
Abstract:
A long-fiber nonwoven fabric includes fibers having a birefringence (Δn) of more than or equal to 0.005 and less than or equal to 0.020, a degree of crystallization of less than or equal to 25%, and an average fiber diameter of more than or equal to 30 μm and less than or equal to 60 μm, and has a basis weight amount of more than or equal to 50 g/m2 and less than or equal to 120 g/m2, and a folding angle after being pressed for 10 seconds under a pressure of 5.2 kPa at 80° C. of less than or equal to 15°. Thus, the long-fiber nonwoven fabric has pleating property suitable for a filter reinforcement material, and also has rigidity that satisfies pleat shape retention property.
Inventors:
Hideo Yoshida
Chiaki Katsuki
Masahiro Saijo
Chiaki Katsuki
Masahiro Saijo
Application Number:
JP2020507772A
Publication Date:
June 06, 2023
Filing Date:
March 18, 2019
Export Citation:
Assignee:
Toyobo Co., Ltd.
International Classes:
D04H3/011; B01D39/16; D01F6/92; D04H3/007; D04H3/016; D04H3/018
Domestic Patent References:
| JP2015074842A | ||||
| JP2017222951A | ||||
| JP4176311A |
Foreign References:
| WO2018225671A1 | ||||
| WO2014069562A1 |
Attorney, Agent or Firm:
Patent Attorney Fukami Patent Office
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