JPS57105217A - Fibrous filter medium - Google Patents

Fibrous filter medium

Info

Publication number
JPS57105217A
JPS57105217A JP18264380A JP18264380A JPS57105217A JP S57105217 A JPS57105217 A JP S57105217A JP 18264380 A JP18264380 A JP 18264380A JP 18264380 A JP18264380 A JP 18264380A JP S57105217 A JPS57105217 A JP S57105217A
Authority
JP
Japan
Prior art keywords
electret
effect
filter medium
fibers
mechanical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP18264380A
Other languages
Japanese (ja)
Inventor
Takuji Watanabe
Takashi Takahira
Mitsuo Takaya
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NITSUTA BERUTO KK
Nitta Corp
Original Assignee
NITSUTA BERUTO KK
Nitta Corp
Nitta Belt KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NITSUTA BERUTO KK, Nitta Corp, Nitta Belt KK filed Critical NITSUTA BERUTO KK
Priority to JP18264380A priority Critical patent/JPS57105217A/en
Publication of JPS57105217A publication Critical patent/JPS57105217A/en
Pending legal-status Critical Current

Links

Landscapes

  • Filtering Materials (AREA)
  • Electrostatic Separation (AREA)

Abstract

PURPOSE: To obtain a filter medium which is high in efficiency, low in pressure loss and has a long useful life by mixing non-electret fibres into electret fibers for cleaning air, wherein the non-electret fibers are smaller than the electret fibers in diameter.
CONSTITUTION: The filter medium is composed of a mixture of the electret fibrous materialIand the non-electret fibrous material II smaller than the fibrous materialIin diameter, and it has a synergistic effect of combined merits of an electret effect and a mechanical effect. The materialIis very high in initial efficiency because it securely adsorbs fine particles through polarizing forces and Coulomb forces. In addition, since the polarizing force is based on the Coulomb force, the materialIshows a greater effect with a larger gaps between fibers, as compared to a mechanical filter. With the addition of the mechanical effect of the material II, the filter medium maintains a high effect even after used for a long period of time owing to the synergistic effect, and has a pressure loss much smaller than that of a mechanical filter. Further, crossing or contacting parts of the materialIitself are reduced, resulting in a higher efficiency.
COPYRIGHT: (C)1982,JPO&Japio
JP18264380A 1980-12-22 1980-12-22 Fibrous filter medium Pending JPS57105217A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18264380A JPS57105217A (en) 1980-12-22 1980-12-22 Fibrous filter medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18264380A JPS57105217A (en) 1980-12-22 1980-12-22 Fibrous filter medium

Publications (1)

Publication Number Publication Date
JPS57105217A true JPS57105217A (en) 1982-06-30

Family

ID=16121880

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18264380A Pending JPS57105217A (en) 1980-12-22 1980-12-22 Fibrous filter medium

Country Status (1)

Country Link
JP (1) JPS57105217A (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038020A (en) * 1983-08-09 1985-02-27 Sanyo Electric Co Ltd Filter of air purifier
JPS6044015A (en) * 1983-08-23 1985-03-08 Koken Kk Electrostatic type air filter
EP0207203A2 (en) * 1985-05-30 1987-01-07 Research Development Corporation of Japan Electrostatic dust collector
US5350620A (en) * 1989-11-14 1994-09-27 Minnesota Mining And Manufacturing Filtration media comprising non-charged meltblown fibers and electrically charged staple fibers
WO1996037276A1 (en) * 1995-05-25 1996-11-28 Kimberly-Clark Worldwide, Inc. Filter matrix
US5807366A (en) * 1994-12-08 1998-09-15 Milani; John Absorbent article having a particle size gradient
US5814570A (en) * 1994-06-27 1998-09-29 Kimberly-Clark Worldwide, Inc. Nonwoven barrier and method of making the same
US5821178A (en) * 1994-12-30 1998-10-13 Kimberly-Clark Worldwide, Inc. Nonwoven laminate barrier material
US5830810A (en) * 1995-07-19 1998-11-03 Kimberly-Clark Worldwide, Inc. Nonwoven barrier and method of making the same
US5834384A (en) * 1995-11-28 1998-11-10 Kimberly-Clark Worldwide, Inc. Nonwoven webs with one or more surface treatments
US5834386A (en) * 1994-06-27 1998-11-10 Kimberly-Clark Worldwide, Inc. Nonwoven barrier
US5998308A (en) * 1994-02-22 1999-12-07 Kimberly-Clark Worldwide, Inc. Nonwoven barrier and method of making the same
JP2003095244A (en) * 2001-09-20 2003-04-03 Toppan Printing Co Ltd Sealed container

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6038020A (en) * 1983-08-09 1985-02-27 Sanyo Electric Co Ltd Filter of air purifier
JPS6044015A (en) * 1983-08-23 1985-03-08 Koken Kk Electrostatic type air filter
EP0207203A2 (en) * 1985-05-30 1987-01-07 Research Development Corporation of Japan Electrostatic dust collector
US5350620A (en) * 1989-11-14 1994-09-27 Minnesota Mining And Manufacturing Filtration media comprising non-charged meltblown fibers and electrically charged staple fibers
US5998308A (en) * 1994-02-22 1999-12-07 Kimberly-Clark Worldwide, Inc. Nonwoven barrier and method of making the same
US5814570A (en) * 1994-06-27 1998-09-29 Kimberly-Clark Worldwide, Inc. Nonwoven barrier and method of making the same
US5834386A (en) * 1994-06-27 1998-11-10 Kimberly-Clark Worldwide, Inc. Nonwoven barrier
US5807366A (en) * 1994-12-08 1998-09-15 Milani; John Absorbent article having a particle size gradient
US5916204A (en) * 1994-12-08 1999-06-29 Kimberly-Clark Worldwide, Inc. Method of forming a particle size gradient in an absorbent article
US5821178A (en) * 1994-12-30 1998-10-13 Kimberly-Clark Worldwide, Inc. Nonwoven laminate barrier material
US5877099A (en) * 1995-05-25 1999-03-02 Kimberly Clark Co Filter matrix
WO1996037276A1 (en) * 1995-05-25 1996-11-28 Kimberly-Clark Worldwide, Inc. Filter matrix
US5830810A (en) * 1995-07-19 1998-11-03 Kimberly-Clark Worldwide, Inc. Nonwoven barrier and method of making the same
US5834384A (en) * 1995-11-28 1998-11-10 Kimberly-Clark Worldwide, Inc. Nonwoven webs with one or more surface treatments
JP2003095244A (en) * 2001-09-20 2003-04-03 Toppan Printing Co Ltd Sealed container

Similar Documents

Publication Publication Date Title
JPS57105217A (en) Fibrous filter medium
JPS5735920A (en) Filter medium for air
JPS5784713A (en) Production of filter
DE60117047D1 (en) CARBON BLOCK WATER FILTER
AU7087094A (en) Device for the separation of microscopic particules out of air
GR850023B (en)
CA2043495A1 (en) Method of filtering beverages and chemical, pharmaceutical, or similar liquids
ES2173970T3 (en) ANAEROBICALLY CURABLE COMPOSITION.
ZA954207B (en) A filter element having a fibrous coating and methods for producing it
ES2147593T3 (en) MAGNETIC PARTICLES, A METHOD FOR ITS PREPARATION AND USE IN THE PURIFICATION OF SOLUTIONS.
JPS52113466A (en) Friction pad for disc brake
JPS5689538A (en) Crushing method of used tire
JPS5637019A (en) Filter unit
AU4785097A (en) Filtering bag with high retention capacity
JPS53112568A (en) Dust-collecting filter medium
JPS5250070A (en) Dust-removing apparatus using a spring filter
JPS57107288A (en) Water purifying member
JPS5326468A (en) Filtering device
JPS54464A (en) Electric cleaner
JPS5713103A (en) Wet type finely pulverizing method in manufacture of rare earth element magnet
JPS5256455A (en) Filter made of a fluorine-containing resin for capturing granular subs tances suspended in air
JPS57140942A (en) Vibration suppressor for pole
JPS52101673A (en) Arrangement of hollow fibrous material
JPS5524524A (en) Filter
JPS53112569A (en) Dust-collecting filter medium