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    MICROPOROUS POLYETHYLENE MEMBRANE, ITS PRODUCTION METHOD AND BATTERY SEPARATOR
    4.
    发明申请
    MICROPOROUS POLYETHYLENE MEMBRANE, ITS PRODUCTION METHOD AND BATTERY SEPARATOR 审中-公开
    微波聚乙烯薄膜及其生产方法和电池分离器

    公开(公告)号：US20100151310A1

    公开(公告)日：2010-06-17

    申请号：US11997433

    申请日：2006-08-03

    申请人： Kotaro Takita ,  Shintaro Kikuchi ,  Kazuhiro Yamada ,  Teiji Nakamura ,  Koichi Kono

    发明人： Kotaro Takita ,  Shintaro Kikuchi ,  Kazuhiro Yamada ,  Teiji Nakamura ,  Koichi Kono

    IPC分类号： H01M2/16 ,  B32B3/26 ,  B32B7/02 ,  B29C67/20

    CPC分类号： H01M2/145 ,  B01D67/0074 ,  B01D69/02 ,  B01D71/26 ,  B01D2323/08 ,  B01D2323/12 ,  B01D2325/02 ,  B01D2325/022 ,  B01D2325/34 ,  B29C48/0018 ,  B29C48/08 ,  B29C48/30 ,  B29C48/305 ,  B29C48/9135 ,  B29C48/914 ,  B29C48/917 ,  B29K2023/06 ,  B29K2105/04 ,  H01G9/02 ,  H01M2/1653 ,  H01M10/052 ,  Y10T428/2495 ,  Y10T428/249978

    摘要： A microporous polyethylene membrane made of a polyethylene resin comprising 15% or less by mass of ultra-high-molecular-weight polyethylene having a mass-average molecular weight of 1×106 or more, which is constituted by a dense-structure layer having an average pore diameter of 0.01 to 0.05 μm, and a coarse-structure layer formed on at least one surface and having an average pore diameter 1.2-fold to 5.0-fold of that of the dense-structure layer, has a high electrolytic solution absorption speed with thickness and air permeability little changing when compressed. Such a microporous polyethylene membrane is produced by extruding a melt blend of the above polyethylene resin and a membrane-forming solvent through a die, cooling the resultant extrudate with a temperature distribution in a thickness direction to provide a gel-like sheet, stretching the gel-like sheet at a temperature from the crystal dispersion temperature of the polyethylene resin +10° C. to the crystal dispersion temperature +30° C., removing the membrane-forming solvent, and stretching the membrane again to 1.05-fold to 1.45-fold.

    摘要翻译： 一种由聚乙烯树脂制成的微孔聚乙烯膜，该聚乙烯树脂包含质量平均分子量为1×10 6以上的15质量％以下的超高分子量聚乙烯，所述超高分子量聚乙烯由具有 平均孔径为0.01〜0.05μm，在至少一个表面形成的平均孔径为致密结构层的平均孔径的1.2倍〜5.0倍的粗结构层具有高的电解液吸收速度 压缩时厚度和透气度几乎不变化。 这样的微孔聚乙烯膜通过将模具中的上述聚乙烯树脂和成膜溶剂的熔融共混物挤出通过模具制造，在厚度方向上以温度分布冷却所得挤出物，得到凝胶状片材，拉伸凝胶 在从聚乙烯树脂的结晶分散温度+ 10℃至结晶分散温度+ 30℃的温度下，除去成膜溶剂，再次将膜拉伸至1.05倍至1.45〜 折。

    Coextrusion die and manifold system therefor
    9.
    发明申请
    Coextrusion die and manifold system therefor 审中-公开
    共挤出模具和歧管系统

    公开(公告)号：US20090072434A1

    公开(公告)日：2009-03-19

    申请号：US11901164

    申请日：2007-09-14

    申请人： Kotaro Takita ,  Shintaro Kikuchi ,  Koichi Kono

    发明人： Kotaro Takita ,  Shintaro Kikuchi ,  Koichi Kono

    IPC分类号： B29C47/88

    CPC分类号： B29C55/023 ,  B29C48/08 ,  B29C48/21 ,  B29C48/30 ,  B29C48/307 ,  B29C48/313 ,  B29C48/705 ,  B29C55/005 ,  B29K2023/0683 ,  B29K2105/04 ,  B29L2031/3468 ,  B29L2031/7146

    摘要： A coextrusion die for producing a multilayer film or sheet of thermoplastic materials. The coextrusion die includes a die outlet through which a layered melt stream of the thermoplastic materials is extruded as a multilayer film or sheet, a first die section for producing a core layer, the first die section having a flat manifold, the flat manifold having a feed entrance and a pressure manifold in communication with the slotted die outlet, a second die section for producing a first skin layer, the second die section having a cross flow manifold, the cross flow manifold having a flow path wherein a portion of a melt stream of the thermoplastic material traverses the second die section's length more than once, the cross flow manifold having a feed entrance and a pressure manifold in communication with the slotted die outlet, and a third die section for producing a second skin layer, the third die section having a cross flow manifold, the cross flow manifold having a flow path wherein a portion of a melt stream of the thermoplastic material traverses the third die section's length more than once, the cross flow manifold having a feed entrance and a pressure manifold in communication with the slotted die outlet. A process for making a multilayer extrudate of thermoplastic materials is also provided.

    摘要翻译： 一种用于生产多层膜或热塑性材料片的共挤出模。 共挤出模具包括模具出口，热塑性材料的分层熔融流体通过该模具出口作为多层膜或片材挤出，用于制造芯层的第一模具部分，第一模具部分具有平坦的歧管，所述平面歧管具有 进料入口和与开槽模具出口连通的压力歧管，用于产生第一表皮层的第二模具部分，所述第二模具部分具有横流歧管，所述横流歧管具有流动路径，其中一部分熔体流 所述热塑性材料横穿所述第二模具部分的长度不止一次，所述横流歧管具有与所述开槽模具出口连通的进料入口和压力歧管，以及用于产生第二表皮层的第三模具部分，所述第三模具部分 具有横流歧管，所述横流歧管具有流动路径，其中所述热塑性材料的熔体流的一部分穿过所述第三模具部分 长度不止一次，横流歧管具有进料入口和与开槽模具出口连通的压力歧管。 还提供了制造热塑性材料的多层挤出物的方法。