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    • 1. 发明授权
    • Metallized film for electrical capacitors having a semiconductive layer
extending entirely across the unmetallized margin
    • 具有完全延伸穿过未金属化边缘的半导体层的电容器的金属化膜
    • US5615078A
    • 1997-03-25
    • US357376
    • 1994-12-16
    • Martin HudisMamoru KoebisuKenji Hatada
    • Martin HudisMamoru KoebisuKenji Hatada
    • H01G4/18H01G4/38H01G4/06H01G4/008
    • H01G4/38
    • A film capacitor in which the unmetallized margin is provided with a semiconductive layer. The layer provides a parallel resistive path within the capacitor, itself, obviating the need for an external resistor. It also grades the electric field across the margin, i.e., makes the field more uniform, thus allowing the margin to be made narrower without electrical breakdown, permitting a reduction in the physical size of the capacitor. A refractory, semiconductive layer is provided between the metal layer and the dielectric film. The refractory layer accelerates the self-clearing process, by insulating the underlying dielectric film from the heat generated by the vaporizing metal, thus hastening vaporization and reducing the tendency of the dielectric film to carbonize. As a result, faults are cleared with substantially less energy consumption. Preferably, the refractory layer is also semiconductive, to reduce field emission effects, and thereby decrease the frequency of faults in the dielectric film.
    • 一种薄膜电容器,其中未金属化的边缘设置有半导体层。 该层本身提供了电容器内部的并联电阻通路,从而避免了外部电阻器的需要。 它还对跨越边缘的电场进行分级,即使场更均匀,从而允许使边缘变窄,而不会发生电击穿,从而可以减小电容器的物理尺寸。 在金属层和电介质膜之间设置难熔的半导体层。 耐火层通过将下面的电介质膜与由汽化金属产生的热量隔离来加速自清洁过程,从而加速蒸发并降低电介质膜碳化的趋势。 因此,能够消耗大量能量来清除故障。 优选地,耐火层也是半导体的,以减少场发射效应,从而降低电介质膜中的故障频率。
    • 2. 发明授权
    • Laminated film of biaxially oriented polypropylene and an olefin polymer
film
    • 双轴取向聚丙烯层压膜和烯烃聚合物膜
    • US4522887A
    • 1985-06-11
    • US590611
    • 1984-03-19
    • Mamoru KoebisuMasayuki ShinzawaMasatsugi Murakami
    • Mamoru KoebisuMasayuki ShinzawaMasatsugi Murakami
    • B32B27/32B32B15/08B32B27/08B65D65/00
    • B32B27/32B29K2995/0022B29K2995/0072Y10S428/91Y10T428/31576Y10T428/31591Y10T428/31605Y10T428/31692Y10T428/31703Y10T428/31913
    • This invention provides a laminated film prepared by laminating at least one surface of a biaxially oriented polypropylene film (A) with an olefin polymer film (B) containing from 10 to 50% by weight of an ethylene component and the balance mainly comprising a propylene component, said olefin polymer film (B) having at least three peaks in the melting curve within the range of from 120.degree. to 165.degree. C. and a surface roughness Ra of from 0.2 to 1.5.mu., said laminated film being excellent in delustering quality, light transmittance, retention of delustering quality under heat and pressure, adhesion to metallized layers and to paper.This invention further provides a laminated film prepared by laminating a polymer film (C) containing from 1 to 40% by weight of an ethylene component and the balance mainly comprising a propylene component and having one or two melting peaks within the range of from 100.degree. to 165.degree. C. and a surface roughness Ra of below 0.15.mu., in the order of arrangement of (B)/(A)/(C), said laminated film being capable of readily providing a film having a mat finish metallic luster or a mirror finish metallic luster.
    • 本发明提供了通过将双轴取向聚丙烯膜(A)的至少一个表面与含有10〜50重量%的乙烯成分的烯烃聚合物膜(B)层压而制备的层压膜,其余主要包含丙烯成分 所述烯烃聚合物膜(B)在熔融曲线中具有至少三个峰,范围为120-165℃,表面粗糙度Ra为0.2-1.5μm,所述层压膜具有优良的消光性, 光透射率,在热和压力下保持消光质量,对金属化层和纸的粘附。 本发明还提供一种叠层膜,其通过层压含有1〜40重量%的乙烯成分的聚合物膜(C),其余主要包含丙烯成分的平衡物,并且具有在100℃的一个或两个熔点 (B)/(A)/(C)的排列顺序,表面粗糙度Ra低于0.15μm的表面粗糙度Ra,所述层压膜能够容易地提供具有垫面金属光泽的膜或 镜面光洁金属光泽。