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    • 19. 发明申请
    • MELTBLOWN FIBER SPINNING DIE
    • 纺织纤维纺丝机
    • WO2011091251A8
    • 2011-11-03
    • PCT/US2011022058
    • 2011-01-21
    • FIBERWEB INCGILLESPIE JAY DARRELLNEWMAN MARC STEVEN
    • GILLESPIE JAY DARRELLNEWMAN MARC STEVEN
    • D01D4/02D04H1/56
    • D01D4/025
    • The invention provides a device that can be used to produce meltblown nanofibers. The meltblown fiber spinning device comprises: a spin block having an inlet side; an outlet side opposite the inlet side; a discharge surface disposed at the outlet side of the spin block; a flow channel formed at the inlet side of the spin block for receiving molten polymer from a polymer source; an inlet surface formed in the flow channel towards the outlet side of the spin block; and a plurality of spaced apart capillaries formed in the inlet surface of the spin block, the capillaries having an inlet end in fluid communication with the flow channel and a discharge end at the discharge surface of the spin block, wherein the capillaries have a diameter (D) in the range of from 2-10 mils and a length (L), wherein the L/D ratio is at least 1 and less than 20, and wherein the number of capillaries is in the range of from 20-200 capillaries per inch. Molten polymer introduced into the flow channel flows into the capillaries and is then extruded from the discharge ends of the capillaries as strands of fine filaments.
    • 本发明提供了可用于生产熔喷纳米纤维的装置。 熔喷纤维纺丝装置包括:具有入口侧的旋转块; 与入口侧相对的出口侧; 设置在所述旋转块的出口侧的排出表面; 在所述旋转块的入口侧形成的用于从聚合物源接收熔融聚合物的流动通道; 在所述流动通道中形成的朝向所述自旋块的出口侧的入口表面; 以及形成在所述旋转块的入口表面中的多个间隔开的毛细管,所述毛细管具有与所述流动通道流体连通的入口端和所述旋转块的排出表面处的排出端,其中所述毛细管具有直径 D)在2-10密耳和长度(L)的范围内,其中L / D比至少为1且小于20,并且其中毛细管的数量在每个20-200毛细管的范围内 英寸。 引入到流动通道中的熔融聚合物流入毛细管中,然后从毛细管的排出端挤出成细丝。