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    IMPROVED SPUNBOND SYSTEM AND PROCESS
    2.
    发明申请
    IMPROVED SPUNBOND SYSTEM AND PROCESS 有权

    公开(公告)号：US20230135016A1

    公开(公告)日：2023-05-04

    申请号：US17908552

    申请日：2021-03-05

    申请人： Kimberly-Clark Worldwide, Inc.

    发明人： Bryan D. Haynes ,  Eric E. Lennon

    IPC分类号： D01D5/098 ,  D01D5/092 ,  D01D10/04

    摘要： A system and method for providing a plurality of fibers from a spinneret; subjecting the fibers to quench air; attenuating the fibers through a closed stretching unit; reducing a velocity of the plurality of fibers in a diffuser that is spaced apart from an exit of the closed stretching unit in a direction of travel of the fibers, the diffuser having opposed diverging sidewalls; and subjecting the fibers to an applied electrostatic charge before the fibers enter the diffuser, wherein the electrostatic charge is applied by one or more electrostatic charging units.

    METHOD OF MAKING UNIFORM SPUNBOND FILAMENT NONWOVEN WEBS
    8.
    发明申请
    METHOD OF MAKING UNIFORM SPUNBOND FILAMENT NONWOVEN WEBS 有权

    公开(公告)号：US20220307175A1

    公开(公告)日：2022-09-29

    申请号：US17291452

    申请日：2020-01-10

    申请人： Kimberly-Clark Worldwide, Inc.

    发明人： John H. Conrad ,  Isabelle R. Bouchard ,  Matthew B. Lake ,  Eric E. Lennon

    IPC分类号： D04H3/16 ,  D04H3/147 ,  D04H3/007

    摘要： A method of making nonwoven webs comprising providing a spinneret wherein the spinneret includes a pattern of conduits, the pattern of conduits forming an extrusion region; directing only a first stream of molten propylene polymer having a first temperature into a region adjacent of the first side of the spinneret, directing only a second stream of molten propylene polymer having a second temperature into a region distal to the first side of the spinneret, extruding only the first stream of molten propylene polymer through the exit openings in a first zone; extruding only the second stream of molten propylene polymer through the exit openings of a second zone; the second zone is distal to the first side with the first zone being between the second zone and the first side.