Patent ID: 11885044
Assignee: LG CHEM, LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D  C | IPC C  D

Claim 0:
1. A method for producing a polypropylene nonwoven fabric comprising the steps of:
step 1: spinning a metallocene polypropylene resin to produce filaments;
step 2: cooling the spun filaments at a temperature of 10 to 20° C.; and
step 3: bonding the cooled filaments together at 150 to 165° C. to form a nonwoven fabric,
wherein the metallocene polypropylene resin has:
a weight average molecular weight of 100,000 to 150,000,
a molecular weight distribution (PDI) of 2.0 to 2.5,
a melt index (MI) of 20 to 28 g/10 min measured at 230° C. under a load of 2.16 kg according to ASTM D1238,
a melting point of 150 to 155° C., and
a xylene soluble (XS) content of 2% by weight or less.