MELT SPUN BIOCOMPONENT FILAMENT AND METHOD FOR MANUFACTURING A MELT SPUN BIOCOMPONENT FILAMENT

    公开(公告)号:US20230407525A1

    公开(公告)日:2023-12-21

    申请号:US18333726

    申请日:2023-06-13

    IPC分类号: D01D5/08 D01D5/088 D01D5/34

    CPC分类号: D01D5/082 D01D5/34 D01D5/088

    摘要: The production of bicomponent polymer fibers may be enhanced to provide greater bulk in bulk continuous filaments by creating differential stresses in the extruded combined melt and using those differential stresses to increase crimps, twists, and rotations thereby providing greater bulk. In one of many possible embodiments, these differential stresses may be formed by combining polymer compositions having different properties, or during the extrusion of the combined polymer melt from the spinneret, or by environmentally treating the melt spun bicomponent filament. The inventions disclosed and taught herein may be applied to the production of all types of bicomponent polymer fibers including, and without limitation, side-by-side and core and sheath extrusions.