公开(公告)号：US4138520A

公开(公告)日：1979-02-06

申请号：US635373

申请日：1975-11-25

申请人： Hiroshi Sato ,  Munetsugu Nakatani ,  Hiroshi Nakatsui ,  Hideto Kakita ,  Hiroyuki Shimoyama ,  Naoki Mochida ,  Shuichi Sugimori

发明人： Hiroshi Sato ,  Munetsugu Nakatani ,  Hiroshi Nakatsui ,  Hideto Kakita ,  Hiroyuki Shimoyama ,  Naoki Mochida ,  Shuichi Sugimori

IPC分类号： B29C47/00 ,  B32B3/00 ,  B29C17/00

CPC分类号： B29C47/0009 ,  B29C2947/9259 ,  B29C2947/92704 ,  B29C2947/92885 ,  B29C2947/92895 ,  B29C2947/92904 ,  B29C47/0004 ,  B29C47/0026 ,  B29C47/0042 ,  B29C47/0057 ,  B29C47/0059 ,  B29C47/92 ,  Y10T428/24355 ,  Y10T428/24446 ,  Y10T428/31938

摘要： A translucent polypropylene film containing no .beta.-type crystallization nucleating agent which has, on at least one side, a surface layer composed of a two- or three-dimensional network structure, in which at least 1,000 network elements constituting the said network structure are present per cm.sup.2 of the film surface. The said film is obtained in such a manner that an unstretched polypropylene film having, on at least one side, a surface layer having a K value, which represents the amount of .beta.-type crystals present at a portion from the surface to a thickness of 10% in the thick-wall direction, of at least 0.1 is biaxially stretched under such conditions that the stretching temperature at the stretch initiation point is in the range of 145.degree. to 176.degree. C. and the stretch ratio in one direction is less than 8 times. The above-mentioned film is excellent in mechanical properties, quite dense in inner structure and high in airtightness, and the surface thereof has a fine uneven structure or fibril-like network structure, and has a favorable haze. Accordingly, the said film is used as a film for packing medicines, hygienic materials and foods, and as an insulating oil-impregnated dielectric film for condensers.

摘要翻译： 不含β型结晶成核剂的半透明聚丙烯薄膜，其至少在一侧具有由二维或三维网络结构构成的表面层，其中至少有1,000个构成所述网络结构的网络元件 每cm 2的膜表面。 所述膜是这样获得的，即在至少一侧具有K值表面层的未拉伸聚丙烯膜表示存在于从表面到厚度的部分的β型晶体的量 至少0.1的厚壁方向的10％在拉伸起始点的拉伸温度在145〜176℃的范围内进行双轴拉伸，一个方向的拉伸比小于 8次。 上述膜的机械性能优异，内部结构相当密集，气密性高，其表面具有微细的不均匀结构或原纤维状网状结构，具有良好的雾度。 因此，所述膜用作包装药物，卫生材料和食品的膜，以及用作电容器的绝缘油浸电介质膜。

公开(公告)号：US4185148A

公开(公告)日：1980-01-22

申请号：US794602

申请日：1977-05-06

申请人： Hiroshi Sato ,  Munetsugu Nakatani ,  Shuichi Sugimori

发明人： Hiroshi Sato ,  Munetsugu Nakatani ,  Shuichi Sugimori

IPC分类号： B29C47/00 ,  B29C47/88 ,  C08J5/18 ,  C08F110/06

CPC分类号： C08J5/18 ,  B29C47/0026 ,  B29C47/8825 ,  B29C47/8895 ,  B29C47/0057 ,  B29C47/0059 ,  C08J2323/12

摘要： A polypropylene film which is useful for electrical devices is produced by biaxially stretching an unstretched polypropylene molded article having, on at least one side, a surface layer having .beta.-form crystals, of mean diameter over 7 .mu.m, under such conditions that the stretching temperature at the stretch initiation point is in the range of 145.degree. to 176.degree. C., and the stretch ratio in one direction is less than a factor of 8. The resulting stretched polypropylene film is characterized by excellent mechanical properties, a very dense inner structure, and high air-tightness. The surface of the film has an efficiently roughened, fine, uneven structure containing crater-like patterns or an isotropic network structure and an anisotropic network structure, which is aligned in the extrusion direction. Therefore, the polypropylene film of the present invention can be readily impregnated with insulating oils, and hence can be used in various electrical devices, such as capacitors, electric cables, transformers and the like.

摘要翻译： 可用于电气装置的聚丙烯薄膜是通过双轴拉伸未拉伸的聚丙烯模塑制品，其在至少一侧具有平均直径大于7μm的具有β型晶体的表面层，在拉伸 拉伸起始点的温度在145℃至176℃的范围内，一个方向的拉伸比小于8倍。得到的拉伸聚丙烯薄膜的特征在于优异的机械性能，非常致密的内部 结构高，气密性高。 膜的表面具有包含火山口状图案或各向同性网络结构和在挤出方向上排列的各向异性网络结构的有效地粗糙，细小的不均匀结构。 因此，本发明的聚丙烯薄膜可以容易地用绝缘油浸渍，因此可以用于电容器，电缆，变压器等各种电气装置。

公开(公告)号：US4801386A

公开(公告)日：1989-01-31

申请号：US181168

申请日：1988-04-13

申请人： Shuichi Sugimori ,  Tomihiko Kawamura ,  Tadashi Matsuda ,  Shintaro Nakano, deceased ,  Sumito Saiki ,  Hideaki Habara

发明人： Shuichi Sugimori ,  Tomihiko Kawamura ,  Tadashi Matsuda ,  Shintaro Nakano, deceased ,  Sumito Saiki ,  Hideaki Habara

IPC分类号： B01D17/02 ,  B01J20/28 ,  C02F1/68 ,  C08J9/00 ,  C02F1/28 ,  C02F1/40

CPC分类号： B01J20/28026 ,  B01D17/0202 ,  B01J20/28011 ,  B01J20/28014 ,  C08J9/0066 ,  C02F1/681 ,  Y10S264/18

摘要： A porous water-treating material comprising cut porous strands each comprising a resinous matrix material which consists essentially of a thermoplastic polymer material or a mixture thereof with an inorganic particulate material. Each strand having a number of pores connected to each other and an irregularly rugged peripheral surface which has a ratio in diameter of a circumscribed circle to an inscribed circle in any cross-sectional profile from 1.10:1 to 5.00:1 and a ratio of the distance between circumscribed lines to that between inscribed lines in any side projection profile of from 1.10:1 to 3.00:1. The cut porous strands are prepared by melt-extruding a resinous mixture of the resinous matrix material with a blowing agent at a temperature higher than the melting point of the thermoplastic polymer material and the thermally decomposing point of the blowing material so as to cause the strands to have a number of pores and an irregularly rugged peripheral surface thereof.

摘要翻译： 一种多孔水处理材料，其包括切割的多孔股线，每股包括基本上由热塑性聚合物材料或其与无机颗粒材料的混合物组成的树脂基质材料。 每股具有彼此连接的多个孔和不规则凹凸的外周表面，其具有在1.10：1至5.00：1的任何横截面轮廓中的外接圆直径与内切圆的直径比，并且 任何侧面投影轮廓中的内切线与外接线之间的距离为1.10：1至3.00：1。 切割的多孔线材通过在高于热塑性聚合物材料的熔点和吹塑材料的热分解点的温度下将树脂基质材料的树脂混合物与发泡剂熔融挤出而制备，以使引线 具有多个孔和其不规则凹凸的周边表面。