REWETTABLE POLYOLEFIN FIBRES

摘要

A method for producing cardable, hydrophilic polyolefin-based staple fibres which maintain their hydrophilic properties after at least one wetting with water or an aqueous liquid, the method comprising applying to spun filaments a first spin finish comprising at least one hydrophilic lubricant, stretching the filaments, applying to the stretched filaments a second spin finish comprising at least one cationic antistatic agent, and crimping, drying and cutting the filaments to obtain hydrophilic staple fibres. The first and second spin finishes, which may each contain a hydrophilic lubricant and a cationic antistatic agent, may also contain a small amount of a polydiorganosiloxane. The fibres may be carded at high speeds and are useful for the preparation of hydrophilic nonwoven materials that can maintain wettability after one or several wettings.