JPS6443323A - Filter medium - Google Patents

Filter medium

Info

Publication number
JPS6443323A
JPS6443323A JP19991887A JP19991887A JPS6443323A JP S6443323 A JPS6443323 A JP S6443323A JP 19991887 A JP19991887 A JP 19991887A JP 19991887 A JP19991887 A JP 19991887A JP S6443323 A JPS6443323 A JP S6443323A
Authority
JP
Japan
Prior art keywords
nonwoven fabric
filter paper
filter medium
filter
density
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
JP19991887A
Other languages
Japanese (ja)
Inventor
Terukazu Kadoya
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.)
Roki Co Ltd
Original Assignee
Toyo Roki Mfg Co Ltd
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 Toyo Roki Mfg Co Ltd filed Critical Toyo Roki Mfg Co Ltd
Priority to JP19991887A priority Critical patent/JPS6443323A/en
Publication of JPS6443323A publication Critical patent/JPS6443323A/en
Priority to US07/473,144 priority patent/US4976858A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
    • B01D2239/065—More than one layer present in the filtering material

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Filtering Materials (AREA)

Abstract

PURPOSE:To obtain a filter improved in filtration efficiency by superposing nonwoven fabric having low fiber density on filter paper having high density to form a layer and positioning nonwoven fabric on the inflow side of liquid to be treated. CONSTITUTION:A filter medium 1 is formed into a layer by superposing nonwoven fabric 5 on filter paper 2. In the filter paper 2, fine pores 4 are formed in a base material 3 and the fiber density of filter paper 2 is set comparatively high. On the other hand, in the nonwoven fabric 5, the fiber density is set comparatively low and the whole cross section forms a network. The filter medium 1 is arranged so that nonwoven fabric 5 is positioned on the upstream side of fluid to be filtered and filter paper 2 is positioned on the downstream side. Therefore, this filter medium forms a gradient density type filter medium in which the density is changed from sparse to dense toward the downstream side from the upstream side of the flow of liquid to be filtered and an excellent dust cake layer can be formed.
JP19991887A 1987-08-12 1987-08-12 Filter medium Pending JPS6443323A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP19991887A JPS6443323A (en) 1987-08-12 1987-08-12 Filter medium
US07/473,144 US4976858A (en) 1987-08-12 1990-02-01 Multi-layer filter medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19991887A JPS6443323A (en) 1987-08-12 1987-08-12 Filter medium

Publications (1)

Publication Number Publication Date
JPS6443323A true JPS6443323A (en) 1989-02-15

Family

ID=16415766

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19991887A Pending JPS6443323A (en) 1987-08-12 1987-08-12 Filter medium

Country Status (1)

Country Link
JP (1) JPS6443323A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001523562A (en) * 1997-11-25 2001-11-27 フイルテルウエルク マン ウント フンメル ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Filter element
JP2010151914A (en) * 2008-12-24 2010-07-08 Ricoh Co Ltd Fixing device and image forming apparatus
JP2013522002A (en) * 2010-03-12 2013-06-13 マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング Filter medium of filter element, filter element, and method of manufacturing filter medium

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS426150Y1 (en) * 1966-11-16 1967-03-24
JPS60244316A (en) * 1984-05-21 1985-12-04 Kotsukou Seishi Kk Sheet like article for filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS426150Y1 (en) * 1966-11-16 1967-03-24
JPS60244316A (en) * 1984-05-21 1985-12-04 Kotsukou Seishi Kk Sheet like article for filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001523562A (en) * 1997-11-25 2001-11-27 フイルテルウエルク マン ウント フンメル ゲゼルシヤフト ミツト ベシユレンクテル ハフツング Filter element
JP2010151914A (en) * 2008-12-24 2010-07-08 Ricoh Co Ltd Fixing device and image forming apparatus
JP2013522002A (en) * 2010-03-12 2013-06-13 マン ウント フンメル ゲゼルシャフト ミット ベシュレンクテル ハフツング Filter medium of filter element, filter element, and method of manufacturing filter medium

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