公开(公告)号：EP1552871A4

公开(公告)日：2006-06-07

申请号：EP02808022

申请日：2002-10-16

申请人： HOKUETSU PAPER MILLS ,  NIKKI UNIVERSAL CO LTD

发明人： SAKADUME NOBUYUKI ,  SOYAMA TOSHIHIKO ,  MEGURO EIKO ,  ISOMAE KAZURO ,  GOKANO MIKIKO

IPC分类号： A61L9/00 ,  A61L9/01 ,  A61L9/16 ,  B01D39/14 ,  B01D39/16 ,  B01D39/18 ,  B01D39/20 ,  B01D53/02 ,  C12N11/02 ,  C12N11/14 ,  D21H27/08

CPC分类号： A61L9/16 ,  B01D39/1615 ,  B01D39/1623 ,  B01D53/02 ,  B01D2253/20 ,  C12N11/02 ,  C12N11/14

摘要： It is intended to provide an air purification filter which has a high dry tensile strength, a high wet tensile strength in association with a high water resistance and a high water repellency and exhibits a bactericidal effect due to a gas phase reaction in a gas phase. Namely, an air purification filter having a high dry tensile strength, a high wet tensile strength (a high water resistance) and a high water repellency as well as a bactericidal effect which is obtained by blending a filter fiber having a functional group with a mixture of a modification enzyme which has an ionic polarity opposite to the ionic polarity of the whole filter fiber as described above and a bactericidal effect with an ionic synthetic resin binder having the opposite ionic polarity similar to the modification enzyme.

公开(公告)号：EP1314468A4

公开(公告)日：2004-04-28

申请号：EP01947973

申请日：2001-07-11

申请人： HOKUETSU PAPER MILLS

发明人： SATO MASASHI ,  SOYAMA TOSHIHIKO

IPC分类号： B01D39/20 ,  B01D39/14

CPC分类号： B01D39/2024 ,  B01D39/2017 ,  Y10S55/05 ,  Y10T428/31627 ,  Y10T442/2959 ,  Y10T442/2992

摘要： A filter medium for an air filter , characterized in that it comprises a filter material having a glass fiber as its primary component and an alkyl ketene dimer adhered to the surface of the glass fiber; and a method for producing the filter medium which comprises a step of subjecting a dispersed slurry of a raw material fiber to a wet papermaking to form a wet paper, a step of immersing the wet paper in an aqueous dispersion or solution of the dimer or a liquid mixture of the dimer and a binder resin, or applying or spraying any of the above-mentioned liquids to the wet paper, to thereby allow the dimer to adhere onto the surface of the glass fiber, and a step of drying the resultant wet paper having the dimer adhered thereto. The filter medium exhibits a reduced amount of an out gas generated when it is used with ventilation and also exhibits high water-repellency and satisfactory strength in various applications such as air conditioning of a building and semiconductor manufacturing.

公开(公告)号：EP1785181A4

公开(公告)日：2010-06-30

申请号：EP04747993

申请日：2004-07-21

申请人： HOKUETSU PAPER MILLS

发明人： SAKADUME NOBUYUKI ,  MEGURO EIKO ,  SOYAMA TOSHIHIKO

IPC分类号： B01D39/12

CPC分类号： B01D39/1623 ,  B01D39/1615 ,  Y10T442/186 ,  Y10T442/191 ,  Y10T442/198 ,  Y10T442/60 ,  Y10T442/697 ,  Y10T442/698

摘要： A filter medium for liquid filtration of fine texture exhibiting high strength when wetted with water, which filter medium is comprised of a wet-laid nonwoven fabric. There is provided a filter medium for liquid filtration comprised of a wet-laid nonwoven fabric, characterized in that through blending of 0.5 to 40 wt.% of unbeaten natural fibers, it exhibits a very fine texture, a lowering ratio, calculated from bursting strength in ordinary state and bursting strength when wetted with water, of 30% or below, and a bursting strength, had when wetted with water, of 300 kPa or greater.

公开(公告)号：EP1359095A4

公开(公告)日：2004-10-06

申请号：EP01972501

申请日：2001-09-26

申请人： HOKUETSU PAPER MILLS

发明人： SOYAMA TOSHIHIKO ,  SATO MASASHI

IPC分类号： A61L9/16 ,  B65D85/672 ,  B65D65/02 ,  B01D46/42 ,  B65H55/00

CPC分类号： B65D85/672 ,  A61L9/16

摘要： A filter material take-up product and a paper winding core, which are free from secondary-contaminattion by an outgas while being transported or stocked. Irrespective of its application such as building air conditioner, an air cleaner or a semiconductor factory, the amount of the outgas to be generated from the filter take-up product for the air filter can be kept at a negligible level. The filter take-up product for the air filter is produced by coating and wrapping the filter material for the air filter, as wound on the winding core, with a film wrapping material which is so made of phenolic compounds, carboxylate esters, phosphate esters or cyclic siloxanes as to have an outgas generation in an amount of 100 ng/g or less by the dynamic head space method.