| 摘要 |
<p>A method for producing cardable, hydrophobic polyolefin-based staple fibres by applying to spun filaments a first spin finish comprising at least one cationic antistatic agent, in particular a quaternary ammonium salt, stretching the filaments, applying to the stretched filaments a second spin finish in the form of a dispersion comprising at least one hydrophobic lubricant selected from a fatty acid amide condensation product and a hydrocarbon wax, the second spin finish optionally further comprising a polydiorganosiloxane in an amount of up to 15 % by weight, and crimping, drying and cutting the filaments to obtain staple fibres; as well as texturized, cardable, polyolefin-based staple fibres prepared by the method and hydrophobic nonwoven materials produced from such fibres. The fibres are able to be carded at extremely high speeds and are particularly suitable for use in the preparation of thermally bonded hydrophobic nonwoven fabrics in which a dry, water-repellant surface which can function as a liquid barrier is desired, e.g. for disposable diapers, feminine hygienic products and medical products.</p> |
