Abstract: Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 ?m but not more than 5 ?m and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 ?m.

Abstract: Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 ?m but not more than 5 ?m and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 ?m.

Abstract: Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 ?m but not more than 5 ?m and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 ?m.

Abstract: The present invention provides a polyolefin microporous membrane made of a polyolefin resin and an inorganic particle, and the puncture strength of the microporous membrane is 3 N/20 ?m or more and the membrane thickness retention ratio in penetration creep is 16% or more, thereby being excellent in safety and long-term reliability, and a separator for a nonaqueous electrolyte battery, and the like can be provided.

Abstract: The present invention provides a polyolefin microporous membrane made of a polyolefin resin and an inorganic particle, and the puncture strength of the microporous membrane is 3 N/20 ?m or more and the membrane thickness retention ratio in penetration creep is 16% or more, thereby being excellent in safety and long-term reliability, and a separator for a nonaqueous electrolyte battery, and the like can be provided.

Abstract: The present invention provides a polyolefin microporous membrane made of a polyolefin resin and an inorganic particle, and the puncture strength of the microporous membrane is 3 N/20 ?m or more and the membrane thickness retention ratio in penetration creep is 16% or more, thereby being excellent in safety and long-term reliability, and a separator for a nonaqueous electrolyte battery, and the like can be provided.

Abstract: A microporous film, characterized in that it is prepared by a method comprising melting and kneading a polyolefin resin, inorganic particles and a plasticizer, forming the resultant mixture into a sheet, subjecting the rejecting the resultant sheet to a biaxial stretching treatment of a surface magnification of not less than 20 and less than 100 times, and then extracting the plasticizer, it has an inorganic particle content of 20 to 60 mass %, and it exhibits a piercing strength of 3.0 N/20 ?m or more.

Abstract: Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 ?m but not more than 5 ?m and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 ?m.

Abstract: The present invention provides a polyolefin microporous membrane made of a polyolefin resin and an inorganic particle, and the puncture strength of the microporous membrane is 3 N/20 ?m or more and the membrane thickness retention ratio in penetration creep is 16% or more, thereby being excellent in safety and long-term reliability, and a separator for a nonaqueous electrolyte battery, and the like can be provided.

Abstract: Disclosed is a polyolefin microporous membrane including a multilayer film having two or more layers. In this polyolefin microporous membrane, at least one surface layer has a thickness of not less than 0.2 ?m but not more than 5 ?m and contains inorganic particles, while at least one layer contains a polyethylene and has an air permeability of not less than 50 second/100 cc but not more than 1000 second/100 cc and a puncture strength of not less than 3.0 N/20 ?m.

Abstract: The invention relates to a microporous membrane, which is provided with high safety even under a condition that the interior temperature of a battery becomes high, and which has high permeability and high mechanical strength at the same time. The polyolefin microporous membrane is characterized by a membrane thickness of 5 to 50 ?m, a void content of 30 to 60%, a gas transmission rate of 40 to 300 sec/100 cc/20 ?m, a piercing strength of not less than 2.5 N/20 ?m and a break through temperature of not lower than 110° C. The separator in accordance with the present invention is used to exhibit high safety under a high temperature condition as well as high permeability, and therefore it is particularly useful as a separator for miniaturized high capacity batteries of a non-aqueous electrolytic solution type.

Abstract: A microporous film, characterized in that it is prepared by a method comprising melting and kneading a polyolefin resin, inorganic particles and a plasticizer, forming the resultant mixture into a sheet, subjecting the rejecting the resultant sheet to a biaxial stretching treatment of a surface magnification of not less than 20 and less than 100 times, and then extracting the plasticizer, it has an inorganic particle content of 20 to 60 mass %, and it exhibits a piercing strength of 3.0 N/20 ?m or more.

Abstract: The invention relates to a microporous membrane, which is provided with high safety even under a condition that the interior temperature of a battery becomes high, and which has high permeability and high mechanical strength at the same time. The polyolefin microporous membrane is characterized by a membrane thickness of 5 to 50 ?m, a void content of 30 to 60%, a gas transmission rate of 40 to 300 sec/100 cc/20 ?m, a piercing strength of not less than 2.5 N/20 ?m and a break through temperature of not lower than 110° C. The separator in accordance with the present invention is used to exhibit high safety under a high temperature condition as well as high permeability, and therefore it is particularly useful as a separator for miniaturized high capacity batteries of a non-aqueous electrolytic solution type.

Abstract: A coaxial dielectric resonator which is prismatic and has a through hole in a vertical direction, has such feature that each base side of said prism being no more than 1.6 mm, a diameter of said through hole being no more than 0.8 mm, said coaxial dielectric resonator having an electrode portion on a surface thereof and on an inner surface of said through hole.

Abstract: A separator for a battery using an organic electrolytic solution, which comprises a microporous film comprising a matrix comprised of a polyethylene and a propylene polymer having a weight average molecular weight of from 10,000 to 1,000,000, the propylene polymer being present in a proportion of from 5 to 45% by weight, based on the total weight of the polyethylene and the propylene polymer, the polyethylene containing a fraction having a molecular weight of not smaller than 1,000,000 in a proportion of at least 10% by weight and a fraction having a molecular weight of not greater than 100,000 in a proportion of at least 5% by weight, and wherein the microporous film has a thickness of from 10 to 500 .mu.m, a porosity of from 40 to 85% and a maximum pore diameter of from 0.05 to 5 .mu.m.

Abstract: A method of manufacturing an organic substrate used for printed circuits, which includes the steps of forming through-holes in a porous raw material provided with cover films and having compressive shrinkage, filling electro-conductive paste into the through-holes, separating the cover films from the porous raw material filled with the electro-conductive paste in its through-holes, applying metal foils onto the surfaces of the porous raw material from which the cover films have been separated, and compressing the porous raw material applied with the metal foils through heating and pressurization, whereby the electro-conductive substances in the electro-conductive paste are connected for electrical connection between the metal foils.

Abstract: A method of manufacturing an organic substrate used for printed circuits, which includes the steps of forming through-holes (3) in a porous raw material (2) provided with cover films (1) and having compressive shrinkage, filling electro-conductive paste (4) into the through-holes (3), separating the cover films (1) from the porous raw material (2) filled with the electro-conductive paste (4) in its through-holes (3), applying metal foils (5) onto the surfaces of the porous raw material (2) from which the cover films (1) have been separated, and compressing the porous raw material (2) applied with the metal foils (5) through heating and pressurization, whereby the electro-conductive substances in the electro-conductive paste are connected for electrical connection between the metal foils.

Abstract: An apparatus for guiding a flying vehicle having a light receiver by directing a spirally scanning light beam at the light receiver. A repetition reference time of the scanning of the light beam is stored in the flying vehicle before it is launched. After the flying vehicle has been launched the radiation angle of the spirally scanning light beam is controlled according to the lapse of time after launching of the flying vehicle so as to maintain a scanning area of the scanning light beam on the light receiver constant. In flight, the flying vehicle is guided so as to be on the center of the light beam according to information of a displacement of the flying vehicle from the center of the light beam and information of a displacement angle from a reference axis of the light beam determined from a period of time during which the light receiver receives the light beam.

Abstract: A method for guiding a flying vehicle having a light receiver by directing a spirally scanning beam at the light receiver. A repetition reference time of the scanning of the light beam is stored in the flying vehicle before it is launched. After the flying vehicle has been launched the radiation angle of the spirally scanning light beam is controlled according to the lapse of time after launching of the flying vehicle so as to maintain a scanning area of the scanning light beam on the light receiver constant. In flight, the flying vehicle is guided so as to be on the center of the light beam according to information on a displacement of the flying vehicle from the center of the light beam and information on a displacement angle from a reference axis of the light beam determined from a period of time during which the light receiver receives the light beam.