巻縮型複合繊維の不織布、及びその積層体、並びにその物品

Japanese Patent JP7376675

B2

Disclosed are non-woven fabric of crimped composite fiber and a laminate thereof, and an article. The disclosed non-woven fabric of crimped composite fiber is non-woven fabric of crimped composite fiber comprising a first propylene-based polymer and a second propylene-based polymer, wherein, in the first propylene-based polymer and the second propylene-based polymer, the melting point of the second propylene-based polymer is higher than the melting point of the first propylene-based polymer by 30 °C or more as measured using a differential scanning calorimeter (DSC), a ratio (the second propylene-based polymer/the first propylene-based polymer) of melt flow rates (MFR: measurement temperature of 230 °C, load of 2.16 kg) of the first propylene-based polymer and the second propylene-based polymer is 1.7 or more as measured in accordance with ASTM D1238, a ratio (the second propylene-based polymer/the first propylene-based polymer) of molecular weight distributions (MWD) of the first propylene-based polymer and the second propylene-based polymer is 1.5 or more as measured by gel permeation chromatography (GPC), and a component ratio represented by the first propylene-based polymer/the second propylene-based polymer (weight ratio) is 50/50-10/90.

Jin Il Jun
So Jin Park
Young Suk Seo
De Hi Kim
Won Chul Ju

JP2022501297A

November 08, 2023

June 30, 2020

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TORAY ADVANCED MATERIALS KOREA INCORPORATED

D04H3/007; A61F13/511; A61F13/514; B32B5/26; D01F8/06; D04H3/018; D04H3/147; D04H3/16

JP2001003239A
JP2021518886A
JP2007308868A

WO2012153802A1
WO2011122277A1
WO2011129211A1

Yasuhiko Murayama
Shinya Mihiro
Tatsuhiko Abe

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