FR2216377A1 - Filtration felt for liq. purificn. - with sheet of coarse fibres backed by network of fine fibres - Google Patents

Filtration felt for liq. purificn. - with sheet of coarse fibres backed by network of fine fibres

Info

Publication number
FR2216377A1
FR2216377A1 FR7403325A FR7403325A FR2216377A1 FR 2216377 A1 FR2216377 A1 FR 2216377A1 FR 7403325 A FR7403325 A FR 7403325A FR 7403325 A FR7403325 A FR 7403325A FR 2216377 A1 FR2216377 A1 FR 2216377A1
Authority
FR
France
Prior art keywords
fibres
coarse
purificn
backed
network
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.)
Granted
Application number
FR7403325A
Other languages
French (fr)
Other versions
FR2216377B1 (en
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.)
GHH Basel AG
Original Assignee
GHH Basel AG
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 GHH Basel AG filed Critical GHH Basel AG
Publication of FR2216377A1 publication Critical patent/FR2216377A1/en
Application granted granted Critical
Publication of FR2216377B1 publication Critical patent/FR2216377B1/fr
Granted legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00Special paper or cardboard not otherwise provided for
    • D21H5/12Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D39/00Filtering material for liquid or gaseous fluids
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/36Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/08Filter paper

Abstract

Filtration felt for the purificn. of liqs. esp. water, has a coarse sheet of coarse fibres, with pores backed by a network of fine fibres, materials with a high specific surface being placed within the pores. Insoluble bactericides or bacteriostats are deposited on the surface of the fibres and/or on the material with a high specific surface. Filter retains fine and coarse particles e.g. bacterial with a size of 0.4nm. and chemicals e.g. free chorine or chlorophenol.
FR7403325A 1973-02-01 1974-01-31 Filtration felt for liq. purificn. - with sheet of coarse fibres backed by network of fine fibres Granted FR2216377A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH145173A CH556681A (en) 1973-02-01 1973-02-01 FELT-SHAPED FILTER MATERIAL FOR CLEANING LIQUIDS, IN PARTICULAR WATER.

Publications (2)

Publication Number Publication Date
FR2216377A1 true FR2216377A1 (en) 1974-08-30
FR2216377B1 FR2216377B1 (en) 1977-06-10

Family

ID=4210766

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7403325A Granted FR2216377A1 (en) 1973-02-01 1974-01-31 Filtration felt for liq. purificn. - with sheet of coarse fibres backed by network of fine fibres

Country Status (12)

Country Link
JP (1) JPS49106978A (en)
AU (1) AU6488774A (en)
BE (1) BE810347A (en)
BR (1) BR7400656D0 (en)
CH (1) CH556681A (en)
ES (1) ES422819A1 (en)
FR (1) FR2216377A1 (en)
IL (1) IL44048A (en)
IN (1) IN140225B (en)
IT (1) IT1004832B (en)
NL (1) NL7400993A (en)
ZA (1) ZA74394B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721511A1 (en) * 1976-05-12 1977-11-24 Honshu Paper Co Ltd ADSORB NON-WOVEN FABRIC AND METHOD OF MANUFACTURING THEREOF
EP0145849A1 (en) * 1983-12-15 1985-06-26 American Cyanamid Company Filter paper
WO1985003013A1 (en) * 1984-01-09 1985-07-18 Hughes Aircraft Company Flexible air premeable non-woven fabric filters
WO1986004367A1 (en) * 1985-01-15 1986-07-31 Sca Development Aktiebolag Method at manufacture of carbon-coated fibre material
EP0847784A1 (en) * 1996-12-12 1998-06-17 Elf Antar France Paper filter for charged liquids

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0221916A (en) * 1988-07-07 1990-01-24 Sanretsukusu Kogyo Kk Filter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158532A (en) * 1960-12-06 1964-11-24 Pall Corp Tapered pore filter elements
US3266973A (en) * 1963-07-25 1966-08-16 Richard P Crowley Method of preparing adsorbent filter paper containing crystalline zeolite particles, and paper thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3158532A (en) * 1960-12-06 1964-11-24 Pall Corp Tapered pore filter elements
US3266973A (en) * 1963-07-25 1966-08-16 Richard P Crowley Method of preparing adsorbent filter paper containing crystalline zeolite particles, and paper thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2721511A1 (en) * 1976-05-12 1977-11-24 Honshu Paper Co Ltd ADSORB NON-WOVEN FABRIC AND METHOD OF MANUFACTURING THEREOF
EP0145849A1 (en) * 1983-12-15 1985-06-26 American Cyanamid Company Filter paper
WO1985003013A1 (en) * 1984-01-09 1985-07-18 Hughes Aircraft Company Flexible air premeable non-woven fabric filters
WO1986004367A1 (en) * 1985-01-15 1986-07-31 Sca Development Aktiebolag Method at manufacture of carbon-coated fibre material
EP0847784A1 (en) * 1996-12-12 1998-06-17 Elf Antar France Paper filter for charged liquids
FR2757079A1 (en) * 1996-12-12 1998-06-19 Elf Antar France LIQUID FILTRATION FILM LOADED
US6224768B1 (en) 1996-12-12 2001-05-01 Elf Antar France Filter paper for laden liquids

Also Published As

Publication number Publication date
BE810347A (en) 1974-05-16
ES422819A1 (en) 1976-05-01
IL44048A (en) 1976-10-31
ZA74394B (en) 1974-11-27
IL44048A0 (en) 1974-05-16
DE2403971A1 (en) 1974-08-15
IT1004832B (en) 1976-07-20
IN140225B (en) 1976-10-02
DE2403971B2 (en) 1977-06-08
JPS49106978A (en) 1974-10-11
AU6488774A (en) 1975-07-31
NL7400993A (en) 1974-08-05
BR7400656D0 (en) 1974-11-19
CH556681A (en) 1974-12-13
FR2216377B1 (en) 1977-06-10

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Legal Events

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ST Notification of lapse