NONWOVEN FABRIC AND FILTER USING SAME

WIPO Patent Application WO/2020/203719

A1

A nonwoven fabric main body (11) that constitute a nonwoven fabric (1) according to the present invention is composed by integrating composite polyester fibers (2) and flame-retardant acrylic fibers (3) which serve as other fibers making up the balance. The composite polyester fibers (2) have a sheath-core structure wherein a sheath part (4) is composed of a low-melting-point polyester and a core part (5) is composed of a high-melting-point polyester that has a higher melting point than the low-melting-point polyester. The composite polyester fibers (2) are contained in an amount of 15-80% by weight in a total of 100% by weight of the nonwoven fabric main body (11). The apparent density of the nonwoven fabric main body (11) ((weight of nonwoven fabric main body)/(thickness of nonwoven fabric main body)) is from 0.005 g/cm3 to 0.040 g/cm3. In addition, the bending resistance of the nonwoven fabric main body (11) in the flow direction of the fibers is 50-220 mN∙cm, while the bending resistance in a direction that is orthogonal to the flow direction is 20-140 mN∙cm.

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ADACHI MASASHI (JP)
YAMAGISHI TAKUTO (JP)

PCT/JP2020/013894

October 08, 2020

March 27, 2020

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TOYO ALUMINIUM EKCO PRODUCTS CO LTD (JP)

D04H1/541; B01D39/16; B01D46/00; D04H1/55; F24F7/06

WO2019065807A1

2019-04-04

JPH05212224A	1993-08-24
JPS60168000A	1985-08-31
JP2000045125A	2000-02-15

KASSAI Yasuji et al. (JP)

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