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    • 2. 发明公开
    • Polypropylene filament yarn and process for making same
    • Polypropylen-Filamentgarn und Verfahren zu dessen Herstellung。
    • EP0028844A2
    • 1981-05-20
    • EP80107011.1
    • 1980-11-13
    • PHILLIPS PETROLEUM COMPANY
    • Hatcher, Charles Sidney
    • D01F6/06D01D5/12D02G1/00
    • D01F6/06D01D5/12D02G1/00
    • A process for making filament yarn products is disclosed in which polypropylene, having a molecular weight distribution of less than about 7 and a melt index between about 20 and about 60 is melt spun to produce an as-spun product or additionally interlaced before take-up, twist-drawn, heat set, draw-textured by false-twisting, simultaneously draw-textured, sequentially draw-textured, draw-twisted, draw-Taslan textured, stuffer box crimped and cut into staple fibers, or a plurality of yarns are simultaneously draw-textured by false-twisting while reversing the direction of twist of alternate yarns and thereafter interlacing. Products of improved tenacity, improved birefringence and low elongation are produced.
    • 公开了一种制造长丝产品的方法,其中分子量分布小于约7且熔体指数在约20和约60之间的聚丙烯被熔融纺丝以产生初纺产品或在卷取之前另外交错 ,扭曲拉伸,热定形,通过假捻拉伸织构,同时拉伸织构,顺序拉伸纹理,拉伸扭转,拉丝 - 塔斯兰纹理,填充箱卷曲并切成短纤维或多根纱线 同时通过假捻进行拉伸织构,同时反转交替纱线的扭转方向,然后交织。 产生具有改善的韧性,改善的双折射和低伸长率的产品。