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US 6,274,237 B1Granted
Potentially crimpable composite fiber and a non-woven fabric using the same
AssigneeChisso Corporation
InventorsYuji Nakajima, Koji Minamoto, Masayasu Suzuki
Life of this patent
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Abstract
The invention is directed to a crimpable composite fiber having a propylene copolymer is the first component and a polyethylene as the second component.
Claims7
A potentially crimpable composite fiber comprising;
- a propylene copolymer having melting point (Tm) of 120° C. to 147° C. consisting of 90 to 98 weight % of propylene and 2 to 10 weight % of (α-olefin other than propylene as the first component,
- and a polyethylene as the second component,
- wherein its composite configuration of the first and the second components is eccentric sheath-core configuration where the second component is arranged as the sheath component, and the area ratio of the first component to the second component in cross section of the fiber is 65/35 to 35/65.
Dependencies are inferred from the claim text.