Coextrusion die and manifold system therefor
    4.
    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

    IPC分类号: B29C47/88

    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。

    MICROPOROUS POLYETHYLENE MEMBRANE, ITS PRODUCTION METHOD AND BATTERY SEPARATOR
    7.
    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

    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。

    MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY
    8.
    发明申请
    MULTI-LAYER, MICROPOROUS POLYOLEFIN MEMBRANE, ITS PRODUCTION METHOD, BATTERY SEPARATOR, AND BATTERY 审中-公开
    多层,微孔聚烯烃薄膜,其生产方法,电池分离器和电池

    公开(公告)号:US20090253032A1

    公开(公告)日:2009-10-08

    申请号:US12296232

    申请日:2007-04-09

    摘要: A multi-layer, microporous polyolefin membrane comprising first microporous layers constituting at least both surface layers and at least one second microporous layer disposed between both surface layers; said first microporous layer being made of a first polyolefin comprising (i) polypropylene, or (ii) a mixture of 50% or more by mass of polypropylene and a polyethylene resin; said second microporous layer being made of a second polyolefin comprising (i) a mixture of 7% or less by mass of ultra-high-molecular-weight polyethylene having weight-average molecular weight of 1×106 or more and the other polyethylene than said ultra-high-molecular-weight polyethylene, (ii) the other polyethylene than said ultra-high-molecular-weight polyethylene, or (iii) a mixture of 50% or less by mass of polypropylene and said mixture (i) or said polyethylene (ii); said second microporous layer having a larger average pore diameter than that of said first microporous layer; and the total thickness of said first microporous layers being 15-60% per 100% of the total thickness of said first and second microporous layers.

    摘要翻译: 一种多层微孔聚烯烃膜,包括构成至少两个表面层的第一微孔层和设置在两个表面层之间的至少一个第二微孔层; 所述第一微孔层由第一聚烯烃制成,所述第一聚烯烃包含(i)聚丙烯,或(ii)50质量%以上的聚丙烯和聚乙烯树脂的混合物; 所述第二微孔层由第二聚烯烃制成,所述第二聚烯烃包含(i)重均分子量为1×10 6以上的超高分子量聚乙烯的7质量%以下的混合物, 高分子量聚乙烯,(ii)除了所述超高分子量聚乙烯以外的其它聚乙烯,或者(iii)50质量%以下的聚丙烯和所述混合物(i)或所述聚乙烯(ii)的混合物 ); 所述第二微孔层的平均孔径大于所述第一微孔层的平均孔径; 并且所述第一微孔层的总厚度为所述第一和第二微孔层的总厚度的100%的15-60%。

    MULTI-LAYER, MICROPOROUS POLYETHYLENE MEMBRANE, BATTERY SEPARATOR FORMED THEREBY AND BATTERY
    9.
    发明申请
    MULTI-LAYER, MICROPOROUS POLYETHYLENE MEMBRANE, BATTERY SEPARATOR FORMED THEREBY AND BATTERY 有权
    多层,微孔聚乙烯膜,电池分离器和电池

    公开(公告)号:US20090148761A1

    公开(公告)日:2009-06-11

    申请号:US12064350

    申请日:2006-08-24

    摘要: A multi-layer, microporous polyethylene membrane comprising (a) a first microporous layer made of a polyethylene resin, and (b) a second microporous layer comprising a polyethylene resin, and a heat-resistant polymer having a melting point or a glass transition temperature of 170° C. or higher, the heat-resistant polymer being dispersed in the form of fine particles in the polyethylene resin, and the second microporous layer having pores containing fine particles of the heat-resistant polymer as nuclei from which the cleavage of polyethylene resin fibrils starts, the multi-layer microporous polyethylene membrane having well-balanced shutdown properties, meltdown properties, permeability, mechanical strength, heat shrinkage resistance and compression resistance.

    摘要翻译: 一种多层微孔聚乙烯膜,包括(a)由聚乙烯树脂制成的第一微孔层,和(b)包含聚乙烯树脂的第二微孔层和具有熔点或玻璃化转变温度的耐热聚合物 为170℃以上,耐热性聚合物以聚乙烯树脂中的细颗粒的形式分散,第二微孔层具有含有耐热聚合物微粒的孔,作为核,其中聚乙烯 树脂原纤维开始,多层微孔聚乙烯膜具有良好的平衡关闭性能,熔化性能,渗透性,机械强度,耐热收缩性和抗压缩性。