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    Aramid paper with high surface smoothness
    1.
    发明授权
    Aramid paper with high surface smoothness 失效
    芳纶纸表面平滑度高

    公开(公告)号：US5667900A

    公开(公告)日：1997-09-16

    申请号：US464819

    申请日：1995-06-30

    Applicant: Ippei Kato ,  Yuji Kimura ,  Lee James Hesler

    Inventor： Ippei Kato ,  Yuji Kimura ,  Lee James Hesler

    IPC: D21H13/26 ,  B32B7/06 ,  B32B7/08

    CPC classification number: D21H13/26 ,  Y10T428/31725 ,  Y10T428/31728

    Abstract: Aramid paper with high surface smoothness is offered, wherein [said aramid paper] is characterized by the fact that a surface layer, which contains 100 wt % of poly(metaphenylene isophthalamide) fibrids, which weighs less than 10 g/m.sup.2, and which has a coating ratio of 97% or higher, and an intermediate layer, which comprises 70 to 90 wt % of poly(metaphenylene isophthalamide) fibrids and 10 to 30 wt % of poly(metaphenylene isophthalamide) flocks and weighs 20 g/m.sup.2 or less, are laminated successively on at least one side of the substrate layer which comprises 25 to 60 wt % of said fibrids and 40 to 75 wt % of said flocks, that the surface smoothness of the surface layer is 40 sec per 10 cc or higher, and that the number of fuzz fibers at least 1 mm long, which are generated by surface friction, does not exceed 5 fibers per 25 cm.sup.2. Said aramid paper can be suitably used as electrical insulation paper, heat-resistant labeling paper, heat resistant paper, and the like.

    Abstract translation: PCT No.PCT / JP93 / 01900 Sec。 371日期：1995年6月30日 102（e）1995年6月30日PCT PCT 1993年12月27日PCT公布。 WO94 / 16142 PCT公开号 日期1994年7月21日提供了具有高表面平滑度的纸张，其中[所述芳族聚酰胺纸]的特征在于，含有100重量％聚（间苯二甲酰间苯二胺）纤条体的表面层重量小于10g / m2，其涂布比为97％以上，中间层包含70〜90重量％的聚（间苯邻苯二甲酰间苯二胺）纤条体和10〜30重量％的聚（间苯二甲酰间苯二胺）绒毛，重量为20g / m 2以下，依次层叠在基材层的至少一面上，该基材层包含25〜60wt％的所述纤条体和40〜75wt％的所述絮状物，表面层的表面平滑度为40sec / 10 cc以上，并且由表面摩擦产生的至少1mm长的绒毛纤维的数量每25cm2不超过5根纤维。 所述芳族聚酰胺纸可以适合用作电绝缘纸，耐热标签纸，耐热纸等。

    Process for producing electroconductive films
    4.
    发明授权
    Process for producing electroconductive films 失效
    制造导电膜的方法

    公开(公告)号：US4645566A

    公开(公告)日：1987-02-24

    申请号：US694638

    申请日：1985-01-24

    Applicant: Ippei Kato ,  Masao Takasu ,  Nobuo Maruyama

    Inventor： Ippei Kato ,  Masao Takasu ,  Nobuo Maruyama

    IPC: C08J5/18 ,  C08K7/02 ,  H01B1/22 ,  H01B1/24 ,  H05K9/00 ,  D21H5/18

    CPC classification number: H05K9/009 ,  D21H13/10 ,  D21H5/12 ,  H01B1/22 ,  H01B1/24

    Abstract: A process for producing an electroconductive film having a volume resistivity of fiber oriented direction of not more than 1.times.10.sup.8 ohm cm comprising mixing from 94.5% to 40% volume of a thermoplastic synthetic pulp with from 5% to 30% by volume of thermoplastic composite fibers comprising of a first component having a lower melting point than that of said thermoplastic synthetic pulp and a second component having a higher melting point than that of said thermoplastic synthetic pulp, and from 0.5% to 30% by volume of electroconductive fibers to prepare a paper stock; forming a wet web from the paper stock; heating and drying said wet web at a specific first temperature to melt the first component of the composite fibers, thereby forming a base paper; and thereafter heating said base paper under pressure at a specific second temperature to melt the thermoplastic synthetic pulp, thereby forming a film having dispersed said second component and said electroconductive fibers therein.

    Abstract translation: 制造具有纤维取向方向的体积电阻率不大于1×10 8欧姆厘米的导电膜的方法，包括将94.5％至40％体积的热塑性合成纸浆与5％至30％体积的热塑性复合纤维混合，所述热塑性复合纤维包含 具有比所述热塑性合成纸浆低的熔点的第一组分和具有比所述热塑性合成纸浆更高的熔点的第二组分和0.5至30体积％的导电纤维以制备纸料 ; 从纸料形成湿纸幅; 在特定的第一温度下加热和干燥所述湿纸幅以熔化复合纤维的第一成分，从而形成原纸; 然后在特定的第二温度下加压所述原纸以熔化热塑性合成纸浆，从而形成分散有所述第二成分和所述导电纤维的膜。

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