DESCRIPTION
FIBER, NONWOVEN FABRIC AND APPLICATION THEREOF
5 Technical Field
[OOOl] The present invention relates to a fiber which has
good spinnability, with which smoke emission during spinning is
suppressed, andwhichisexcellentininitialhydrophilicproperty
and enduring hydrophilic property, and to a nonwoven fabric
10 containing such a fiber.
Background Art
[OOOZ] Nonwoven fabrics obtained from olefin polymers
typified by polypropylene have widely been used in various
15 applications because of being excellent in permeability,
flexibility, and lightweight property. Therefore, for the
nonwoven fabrics, various characteristics corresponding totheir
applications have been demanded and improvement in the
characteristics has been needed.
20 [0003] On the other hand, the nonwoven fabrics comprising
olefin polymers are necessarily subjected to hydrophilization
treatment, for use in the topsheets of hygiene materials such as
paper diapers and sanitary napkins, the wipers, and the like
because of being essentially hydrophobic.

I^F-2349 31
CLAIMS
[Claim 1]
A fiber comprising an olefin polymer composition comprising,
based on 100 parts by weight of an olefin polymer, 0.5 to 5 parts
5 by weight of a di-fatty acid ester of a poly(oxyalkylene) diol
represented by formula (1) described below and 0.01 to 2.5 parts
by weight of a poly(oxyalkylene) sorbitan tri-fatty acid ester
(the alkylene group being ethylene, propylene or butylene group,
the number of added moles being 10 to 40, and the fatty acid being
10 an alkyl or alkylene fatty acid having a carbon number of 12 to
18) :
R^-COO-(CnH2nO)a-C6Hi2-0(CnH2nO)b-CO-R2 ••• (Formula 1)
[wherein R'"' and R^ represent an alkyl group having a carbon number
of 11 to 17 and may be the same or different, n in (CnH2nO)a and
15 (CnH2nO)b is an integer of 2 to 4, and a + b is 5 to 23] .
[Claim 2]
The fiber according to claim 1, wherein the olefin polymer
is a propylene polymer.
20
[Claim 3]
The fiber according to claim 2, wherein the propylene polymer
is a propylene/alpha-olefin random copolymer having a melting
point (Tm) ranging from 125 to 155°C.