Core-skin fiber comprising propylene ethylene random copolymer

A skin-core fiber havinga skin of a propylene ethylene copolymer having:i) xylene soluble fraction from 14 wt % to 27 wt %;ii) intrinsic viscosity of the fraction soluble in xylene at 25° C. from 1.0 to 2.4 dl/g;iii) melt flow rate, MFR, from 12 g/10 min to 60 g/10 min;iv) an ethylene derived units...

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Bibliographic Details
Main Authors De Palo, Roberto, Marti Porqueres, Jaume, Lemaire, Renaud
Format Patent
LanguageEnglish
Published 14.11.2023
Subjects
BRAIDING
COTTON-WOOL
FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS
KNITTING
LACE-MAKING
MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL
NON-WOVEN FABRICS
TEXTILES
TRIMMINGS
WADDING
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Summary:A skin-core fiber havinga skin of a propylene ethylene copolymer having:i) xylene soluble fraction from 14 wt % to 27 wt %;ii) intrinsic viscosity of the fraction soluble in xylene at 25° C. from 1.0 to 2.4 dl/g;iii) melt flow rate, MFR, from 12 g/10 min to 60 g/10 min;iv) an ethylene derived units content from 5.0 wt % to 12.0 wt %;v) the ethylene derived units content of the fraction insoluble in xylene from 2.5 wt % to 6.0 wt %;vi) the ethylene derived units content of the fraction soluble in xylene ranging from 15.2. wt % to 30.2 wt %;vii) C13 NMR sequences PEP on the fraction insoluble in xylene from 3.5 mol % to 5.5 mol %; andviii) C13 NMR sequences PEP on the fraction soluble in xylene from 11.0 mol % to 14.2 mol %; anda core of a polyethylene having a density between 0.940 g/cm3 to 0.975 g/cm3.
Bibliography:Application Number: US202017617427