GB1476761A - Filter elements - Google Patents

Filter elements

Info

Publication number
GB1476761A
GB1476761A GB90574A GB90574A GB1476761A GB 1476761 A GB1476761 A GB 1476761A GB 90574 A GB90574 A GB 90574A GB 90574 A GB90574 A GB 90574A GB 1476761 A GB1476761 A GB 1476761A
Authority
GB
United Kingdom
Prior art keywords
layers
activated carbon
woven
filter elements
layer
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.)
Expired
Application number
GB90574A
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.)
UK Secretary of State for Defence
Original Assignee
UK Secretary of State for Defence
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 UK Secretary of State for Defence filed Critical UK Secretary of State for Defence
Priority to GB90574A priority Critical patent/GB1476761A/en
Priority to AU77147/75A priority patent/AU7714775A/en
Priority to DE19752500470 priority patent/DE2500470A1/en
Publication of GB1476761A publication Critical patent/GB1476761A/en
Expired 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
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2003—Glass or glassy material
    • B01D39/2017—Glass or glassy material the material being filamentary or fibrous
    • 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
    • B01D39/086—Filter cloth, i.e. woven, knitted or interlaced material of inorganic 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
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2055—Carbonaceous material
    • B01D39/2065—Carbonaceous material the material being fibrous
    • 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
    • B01D2239/0668—The layers being joined by heat or melt-bonding
    • 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
    • B01D2239/0686—More than one layer present in the filtering material by spot-gluing
    • 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
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1241—Particle diameter

Abstract

1476761 Filter elements DEFENCE SECRETARY OF STATE FOR 23 Dec 1974 [8 Jan 1974] 905/74 Heading BIT A filter element comprises a plurality of woven or non-woven layers of activated carbon fibres spaced apart by particles 2 comprising thermoplastics material (e.g. polyvinyl chloride, polyethylene, polypropylene) and optionally activated carbon, and bonded (e.g. by heating) to at least one of the adjacent layers. The element may also comprise a glass fibre layer and as a reinforcement a layer of perforated cotton scrim. The element may comprise folded layers. The element may be in the form of a face mask. In use the layers may be arranged in series or parallel.
GB90574A 1974-01-08 1974-01-08 Filter elements Expired GB1476761A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB90574A GB1476761A (en) 1974-01-08 1974-01-08 Filter elements
AU77147/75A AU7714775A (en) 1974-01-08 1975-01-07 Filter assemblies
DE19752500470 DE2500470A1 (en) 1974-01-08 1975-01-08 FILTER ELEMENT

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB90574A GB1476761A (en) 1974-01-08 1974-01-08 Filter elements

Publications (1)

Publication Number Publication Date
GB1476761A true GB1476761A (en) 1977-06-16

Family

ID=9712549

Family Applications (1)

Application Number Title Priority Date Filing Date
GB90574A Expired GB1476761A (en) 1974-01-08 1974-01-08 Filter elements

Country Status (3)

Country Link
AU (1) AU7714775A (en)
DE (1) DE2500470A1 (en)
GB (1) GB1476761A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1289748A1 (en) * 2000-05-26 2003-03-12 Koslow Technologies Corporation Method of stabilizing composite media and media produced thereby

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4227904A (en) * 1978-09-08 1980-10-14 D-Mark, Inc. Gas phase permeable filter
US5120331A (en) * 1990-02-06 1992-06-09 Keith Landy Composite gas filtering unit
DE4310110A1 (en) * 1992-07-07 1994-01-13 Kaercher Gmbh & Co Alfred Multi-layer, textile, gas-permeable filter material against chemical pollutants
DE19708692C2 (en) * 1997-03-04 2002-01-31 Mhb Filtration Gmbh & Co Kg Hochleistungsadsorptionsfilter
DE19952092C1 (en) * 1999-10-29 2000-10-26 Daimler Chrysler Ag Activated carbon filter for reducing the vapor emissions from a fuel supply system has connections for fresh air and for the fuel supply

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1289748A1 (en) * 2000-05-26 2003-03-12 Koslow Technologies Corporation Method of stabilizing composite media and media produced thereby
EP1289748A4 (en) * 2000-05-26 2003-07-30 Koslow Techn Corp Method of stabilizing composite media and media produced thereby

Also Published As

Publication number Publication date
AU7714775A (en) 1976-07-08
DE2500470A1 (en) 1975-07-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee