Method for processing a polyolefin fiber semi-finished or end-use products, semi-finished or end-use products can be obtained by this use of the semi-finished or end-use products in medical applications, healthcare, including the semi-finished or end-use product products, or the use of the composition, a polyolefin fiber as a spin finish in the process of processing the semi-finished or end-use product

摘要

PROBLEM TO BE SOLVED: To provide fibers having a very low amount of residues on the surface, and showing good mechanical properties.;SOLUTION: The invention relates to a process for making a multi-filament polyethylene yarn via a gel-spinning process, wherein a spin finish is applied at least once in an amount of 0.1-10 mass% based on the filament, to a filament that contains less than 50 mass% of solvent; the spin finish comprising at least 95 mass% of at least one volatile compound having a boiling point at 0.1 MPa pressure of from 30 to 250C; and the spin finish is subsequently removed by exposing the filament to a temperature of below the melting temperature of the filament. With this process a yarn is made without the need for a washing or extraction step, and very suited for e.g. biomedical applications.; The invention also concerns a polyethylene yarn and a semi-finished or end-use product obtainable by the processes, as well as to the use of thereof in biomedical applications.;COPYRIGHT: (C)2010,JPO&INPIT