Spunbonded nonwoven fabrics
AssigneeMitsui Chemicals, Inc.
InventorsAkio Matsubara, Kenichi Suzuki, Shingo Kajiyama
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Abstract
An object of the invention is to obtain spunbonded nonwoven fabrics including thin hollow fibers which have excellent lightweight properties and uniformity as well as exhibit high strength and flexibility. An aspect of the invention is directed to a spunbonded nonwoven fabric including hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c): (a) the C-axis orientation is at least 0.85, (b) the average fiber diameter is 5 to 20 μm, and (c) the hollowness is 5 to 30%.
Claims13
A spunbonded nonwoven fabric comprising hollow fibers of a propylene polymer, the hollow fibers satisfying the following requirements (a) to (c):
- (a) the C-axis orientation is at least 0.85,
- (b) the average fiber diameter is 5 to 20 μm, and
- (c) the hollowness is 5 to 30%.
Dependencies are inferred from the claim text.