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    DIMENSIONALLY-STABLE MELT BLOWN NONWOVEN FIBROUS STRUCTURES, AND METHODS AND APPARATUS FOR MAKING SAME
    7.
    发明公开
    DIMENSIONALLY-STABLE MELT BLOWN NONWOVEN FIBROUS STRUCTURES, AND METHODS AND APPARATUS FOR MAKING SAME 审中-公开
    三维实体熔喷纤维绒结构和方法及装置及其制造

    公开(公告)号：EP3074559A1

    公开(公告)日：2016-10-05

    申请号：EP14866568.0

    申请日：2014-11-19

    申请人： 3M Innovative Properties Company

    发明人： ZILLIG, Daniel J. ,  TALWAR, Sachin ,  CHRISTIANSEN, Randy L. ,  ROMANO, Michael D. ,  MOORE, Eric M. ,  PERCHA, Pamela A. ,  SONG, Liming ,  BROSTROM, Myles L. ,  SWAN, Michael D.

    IPC分类号： D04H17/00

    摘要： A process and apparatus for producing a dimensionally stable melt blown nonwoven fibrous web. The process includes forming a multiplicity of melt blown fibers by passing a molten stream including molecules of at least one thermoplastic semi-crystalline (co)polymer through at least one orifice of a melt-blowing die, subjecting at least a portion of the melt blown fibers to a controlled in-flight heat treatment operation at a temperature below a melting temperature of the at least one thermoplastic semi-crystalline (co)polymer immediately upon exiting from the at least one orifice, and collecting at least some of the melt blown fibers subjected to the controlled in-flight heat treatment operation on a collector to form a non-woven fibrous structure. The nonwoven fibrous structure exhibits a Shrinkage less than a Shrinkage measured on an identically-prepared structure including only fibers not subjected to the controlled in-flight heat treatment operation, and generally less than 15%.

    摘要翻译： 一种用于生产尺寸稳定的熔喷非织造纤维网的方法和设备。 该方法包括通过使熔融流包括通过熔喷的，至少对所述熔体的一部分吹到的至少一个孔的至少一个热塑性半结晶（共）聚合物的分子形成熔喷纤维的多个 纤维在低于所述至少一个热塑性半结晶（共）聚合物的熔化温度的温度的受控飞行热处理手术后立即从所述至少一个孔口排出，并收集至少一些所述熔喷纤维的 进行受控的热处理在飞行操作上的集电极，以形成非织造纤维结构。 非织造纤维结构表现出收缩小于收缩量上相同制备的结构仅包括不经受受控飞行热处理手术纤维，和基因拉力小于15％。