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公开(公告)号：NO910298L
公开(公告)日：1991-03-25
申请号：NO910298
申请日：1991-01-25
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , TOGASHI RYOICHI
Abstract: PCT No. PCT/JP89/00532 Sec. 371 Date Mar. 25, 1991 Sec. 102(e) Date Mar. 25, 1991 PCT Filed May 26, 1989 PCT Pub. No. WO90/14024 PCT Pub. Date Nov. 29, 1990.A dust-proof headgear which, although having a simple construction, exhibits an excellent dust-proof performance to thereby remarkably reduce a scattering of hair, dandruff and dust from the wearer's head, while exhibiting a high air-permeability to thus eliminate any feeling of sultryness or stuffyness even when worn for a long time. The dust-proof headgear is made of a material having, as a major component thereof, an electret non-woven fabric having a surface electrostatic charge density of 1x10-10 Coulomb/cm2 or greater and an air-permeability of between 10 cc/cm2.sec and 1000 cc/cm2.sec. The headgear of the invention is highly effective for use in various fields of industry in which environmental contamination by contaminants from the heads of workers or habitants is strictly forbidden, e.g., the foodstuff industry, electronic industry, precision machining industry, and medical industry.
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公开(公告)号：DE3168597D1
公开(公告)日：1985-03-14
申请号：DE3168597
申请日：1981-05-27
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , NISHIURA EIICHI
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公开(公告)号：NO177175C
公开(公告)日：1995-08-02
申请号：NO910298
申请日：1991-01-25
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , TOGASHI RYOICHI
Abstract: PCT No. PCT/JP89/00532 Sec. 371 Date Mar. 25, 1991 Sec. 102(e) Date Mar. 25, 1991 PCT Filed May 26, 1989 PCT Pub. No. WO90/14024 PCT Pub. Date Nov. 29, 1990.A dust-proof headgear which, although having a simple construction, exhibits an excellent dust-proof performance to thereby remarkably reduce a scattering of hair, dandruff and dust from the wearer's head, while exhibiting a high air-permeability to thus eliminate any feeling of sultryness or stuffyness even when worn for a long time. The dust-proof headgear is made of a material having, as a major component thereof, an electret non-woven fabric having a surface electrostatic charge density of 1x10-10 Coulomb/cm2 or greater and an air-permeability of between 10 cc/cm2.sec and 1000 cc/cm2.sec. The headgear of the invention is highly effective for use in various fields of industry in which environmental contamination by contaminants from the heads of workers or habitants is strictly forbidden, e.g., the foodstuff industry, electronic industry, precision machining industry, and medical industry.
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公开(公告)号：DE3887337T2
公开(公告)日：1994-06-30
申请号：DE3887337
申请日：1988-11-11
Applicant: TORAY INDUSTRIES
Inventor： NISHIURA EIICHI , ANDO KATSUTOSHI
IPC: D06M10/00 , D06M101/00 , D06M101/16 , D06M101/18 , D06M101/20 , D06M101/22 , H01G7/02
Abstract: This invention relates to an electret material having thermal stability and capable of having high trapped charge quantity and stably existing for a long period of time and a process for preparing said electret material. The electret material of the present invention is characterized in that it comprises 100 parts by weight of polypropylene, 0.01 to 2 parts by weight of at least one stabilizer selected from among hindered amine, nitrogen-containing hindered phenol, and metal-containing hindered phenol stabilizers and that at least part of said propylene has such a molecular weight distribution that the Mw/Mn ratio wherein Mw is a weight-average molecular weight is 5.5 or less. The electret material of the present invention can be widely used for various applications and, e.g., is best suited for use in, e.g., various filter materials, wiper materials, adsorption materials, masking materials, and dust-proof materials.
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15.发明专利
公开(公告)号：CA2070927A1
公开(公告)日：1992-12-13
申请号：CA2070927
申请日：1992-06-10
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , KURATA NOBUO , OKUMURA YOSHIHARU , SUGANO KOUJI
Abstract: Disclosed are a process for producing a tubular nonwoven fabric and tubular nonwoven fabrics produced by the same. In the process, a web is formed on a first rotating cylinder by catching fibers carried to the surface of the first rotating cylinder by a fluid, the web is transferred to a second rotating cylinder, a tube of the transferred web is formed on and around the second rotating cylinder, and the tube is drawn in the axial direction of the second rotating cylinder to form a tubular nonwoven fabric. The tubular nonwoven fabric with a high unit weight can be produced without elongating or breaking the nonwoven fabric, and the diameter of the tubular nonwoven fabric can be freely changed.
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Patent Agency Ranking
公开(公告)号：AU621568B2
公开(公告)日：1992-03-19
申请号：AU2520488
申请日：1988-09-21
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , OGAWA KATSUYA , OKUMURA YOSHIHARU , YOSHIKAZU II , NISHIURA EIICHI
Abstract: Packaging material has on its front and back surfaces surface portions having charges that are polarised mutually differently. @(30pp Dwg.No.5/6)@.
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公开(公告)号：DE69416109T2
公开(公告)日：1999-09-09
申请号：DE69416109
申请日：1994-10-20
Applicant: TORAY INDUSTRIES
Inventor： KAWATSU YUKIO , TSUNASHIMA KENJI , TOYODA KATSUYA , ANDO KATSUTOSHI , YAMAUCHI HIDEYUKI , KIDA KENJI
Abstract: The specification discloses a thermal stencil paper for mimeograph, having a uniform shape of pores and well-balanced retainability and permeability of printing ink. Thermal stencil paper for mimeograph formed by laminating a porous support member comprising polyester fibers on one surface of a polyester film, characterized in that the porous support member forms a reticulate body having a fusing point at which the fibers are fused to one another, a film which straddles the fibers, and which has a thickness smaller than an average fiber diameter, being formed at some of the fusing points in the reticulate body. Since such thermal stencil paper for mimeograph is provided, the printed matter obtained by a mimeograph using this stencil paper has a high quality of image, and set-off does not occur. Such printed matter is highly convenient to transport.
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公开(公告)号：DE69416109D1
公开(公告)日：1999-03-04
申请号：DE69416109
申请日：1994-10-20
Applicant: TORAY INDUSTRIES
Inventor： KAWATSU YUKIO , TSUNASHIMA KENJI , TOYODA KATSUYA , ANDO KATSUTOSHI , YAMAUCHI HIDEYUKI , KIDA KENJI
Abstract: The specification discloses a thermal stencil paper for mimeograph, having a uniform shape of pores and well-balanced retainability and permeability of printing ink. Thermal stencil paper for mimeograph formed by laminating a porous support member comprising polyester fibers on one surface of a polyester film, characterized in that the porous support member forms a reticulate body having a fusing point at which the fibers are fused to one another, a film which straddles the fibers, and which has a thickness smaller than an average fiber diameter, being formed at some of the fusing points in the reticulate body. Since such thermal stencil paper for mimeograph is provided, the printed matter obtained by a mimeograph using this stencil paper has a high quality of image, and set-off does not occur. Such printed matter is highly convenient to transport.
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公开(公告)号：CA2105651C
公开(公告)日：1998-04-07
申请号：CA2105651
申请日：1993-01-08
Applicant: TORAY INDUSTRIES
Inventor： ANDO KATSUTOSHI , KONDOU GORO , TAKAHASHI MASANORI
Abstract: An antibacterial electret material which consists of a synthesized organic polymer having a volume resistivity of not less than 1013 .OMEGA.. cm and containing 0.01 to 2 % by weight of one kind of electret stabilizer selected from the group composed of a hindered amine compound, a nitrogen-containing hindered phenol compound, a metallic salt hindered phenol compound, a phenol compound, a sulfur compound and a phosphorus compound and 0.1 to 4 % by weight of metal ion-containing inorganic compound, and which has a surface density of charge of not less than 1 x 10-10 coulomb/cm2.
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公开(公告)号：DE3788821T2
公开(公告)日：1994-06-30
申请号：DE3788821
申请日：1987-05-08
Applicant: TORAY INDUSTRIES
Inventor： TOGASHI RYOICHI , ANDO KATSUTOSHI
Abstract: A process and apparatus for producing a non-woven, especially a non-woven electret, fiber sheet provides for directing the non-woven fibers at a collecting surface and into an electric field between at least one electrode and the collecting surface. This process, in which the fibers are collected in the electric field, enables economical production of a non-woven electret fiber sheet of a single layer structure having a large amount of polarized charges (giving a total electric charge per unit area of at least 7 x 10 Coulomb/cm ), and a weight per unit area of at least 60 g/m , preferably greater than 80 g/m . The non-woven electret sheet may have the large amount of electret charge throughout its thickness and/or a uniform weight distribution and thus have excellent dust collecting properties.
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