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公开(公告)号：US11661678B2
公开(公告)日：2023-05-30
申请号：US16897848
申请日：2020-06-10
发明人： Joseph Arnold Paul Maria Simmelink , Jacobus Johannes Mencke , Martinus Johannes Nicolaas Jacobs , Roeloef Marissen
IPC分类号： B32B27/32 , D01F6/04 , A61L17/04 , A61L27/16 , D01D4/02 , D02G3/02 , F41H5/04 , B32B5/22 , B32B27/06 , B32B15/14 , B32B7/03 , D01D5/18 , C08F10/02 , C08L23/06 , C08L53/02 , D07B1/02
CPC分类号： D01F6/04 , A61L17/04 , A61L27/16 , B32B5/22 , B32B7/03 , B32B15/14 , B32B27/06 , C08F10/02 , D01D4/02 , D01D5/18 , D02G3/02 , F41H5/0471 , F41H5/0478 , F41H5/0485 , B32B2307/56 , B32B2571/02 , C08L23/06 , C08L53/02 , C08L2203/12 , D07B1/025 , D07B2205/2014 , D07B2801/10 , D10B2321/0211 , Y10T428/24041 , Y10T428/24058 , Y10T428/24124 , Y10T428/249921 , Y10T428/29 , Y10T428/2913 , Y10T428/2967 , Y10T442/2615 , Y10T442/2623
摘要： Processes for making high-performance polyethylene multi-filament yarn are disclosed which include the steps of a) making a solution of ultra-high molar mass polyethylene in a solvent; b) spinning of the solution through a spinplate containing at least 5 spinholes into an air-gap to form fluid filaments, while applying a draw ratio DRfluid; c) cooling the fluid filaments to form solvent-containing gel filaments; d) removing at least partly the solvent from the filaments; and e) drawing the filaments in at least one step before, during and/or after said solvent removing, while applying a draw ratio DRsolid of at least 4, wherein in step b) each spinhole comprises a contraction zone of specific dimension and a downstream zone of diameter Dn and length Dn with Ln/Dn of from 0 to at most 25, to result in a draw ratio DRfluid=DRsp*DRag of at least 150, wherein DRsp is the draw ratio in the spinholes and DRag is the draw ratio in the air-gap, with DRsp being greater than 1 and DRag at least 1. High-performance polyethylene multifilament yarn, and semi-finished or end-use products containing said yarn, especially to ropes and ballistic-resistant composites, are also disclosed.
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