Non-woven webs made from multi-component filaments and methods for forming non-woven webs

• Main Authors: FERGUSON TIMOTHY D, KRUEGER JESSICA, HONARBAKHSH, SAMIR, CARDIBIRO, EDUARDO, LENNON, ERIC, E, D.ARNOLD
• Format: Patent
• Language: Chinese; English
• Published: 23.08.2024
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BRAIDING; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; 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; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; SPINNING; TEXTILES; TRIMMINGS; WADDING

Multi-component filaments, non-woven webs made from the multi-component filaments, and methods for forming non-woven webs are disclosed. According to the invention, the multi-component filament contains a crimp enhancing additive. In particular, the crimp enhancing additive is added to the polymer component such that the crystallization rate and/or cure rate of the polymer component is increased. The use of the crimp enhancing additive in one of the polymer components of the multi-component filament allows the multi-component filament to inherently crimp without the use of any post-crystallization/cure heat treatment. The method produces webs with improved fabric density and softness properties. The crimp enhancing additive incorporated into the filaments is a polyolefin homopolymer, in particular a polypropylene homopolymer. 公开了多组分长丝、由所述多组分长丝制备的非织造纤网以及用于形成非织造纤网的方法。根据本发明，所述多组分长丝含有卷曲增强添加剂。具体而言，所述卷曲增强添加剂被添加到聚合物组分中，使得所述聚合物组分的结晶速率和/或固化速率增加。在所述多组分长丝的所述聚合物组分之一中使用所述卷曲增强添加剂允许所述多组分长丝在不使用任何后结晶/固化热处理的情况下发生固有卷曲。所述方法产生织物密