公开(公告)号：EP3074559A4

公开(公告)日：2017-07-05

申请号：EP14866568

申请日：2014-11-19

申请人： 3M INNOVATIVE PROPERTIES CO

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： D04H1/00 ,  D01D5/084 ,  D01D5/088 ,  D01D5/098 ,  D04H1/55 ,  D04H1/56

CPC分类号： D01D5/0985 ,  D01D5/084 ,  D01D5/088 ,  D04H1/55 ,  D04H1/56 ,  D10B2321/022 ,  D10B2331/04 ,  D10B2331/041

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。 该方法包括通过使包含至少一种热塑性半结晶（共）聚合物的分子的熔融流穿过熔喷模具的至少一个孔口而形成多个熔喷纤维，使至少一部分熔喷 纤维在至少一种热塑性半结晶（共）聚合物的熔融温度以下的温度下立即进行受控的飞行中热处理操作，并且从所述至少一个孔口排出后立即收集至少一些熔喷纤维 在收集器上进行受控的飞行中热处理操作以形成非织造纤维结构。 非织造纤维结构表现出的收缩率小于在同样制备的结构上测得的收缩率，所述结构仅包括未经受控制的飞行中热处理操作的纤维，并且通常小于15％。