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GB1100332A - Improvements in or relating to filter elements - Google Patents

Improvements in or relating to filter elements

Info

Publication number
GB1100332A
GB1100332A GB1091164A GB1091164A GB1100332A GB 1100332 A GB1100332 A GB 1100332A GB 1091164 A GB1091164 A GB 1091164A GB 1091164 A GB1091164 A GB 1091164A GB 1100332 A GB1100332 A GB 1100332A
Authority
GB
United Kingdom
Prior art keywords
slab
holes
layer
polyurethane
cut
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
GB1091164A
Inventor
John Spurgeon Brooks
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.)
Evans Adlard and Co Ltd
Original Assignee
Evans Adlard and 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 Evans Adlard and Co Ltd filed Critical Evans Adlard and Co Ltd
Priority to GB1091164A priority Critical patent/GB1100332A/en
Publication of GB1100332A publication Critical patent/GB1100332A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • 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
    • B01D39/1669—Cellular material
    • B01D39/1676—Cellular material of synthetic origin
    • 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
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/10—Filtering material manufacturing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Filtering Materials (AREA)

Abstract

1,100,332. Air filter. EVANS, ADLARD & CO. Ltd. 12 March, 1965 [14 March, 1964], No. 10911/64. Heading BIT. [Also in Division B5] A respiratory filter element comprises a layer of felted glass fibres 3 deposited on a porous former 1 of foamed polyurethane, having rows of blind holes in one side to extend the filtering surface. In manufacture, a web of foamed polyurethane is passed through a phenolic resin bath and a curing oven to rigidity the polyurethane web, which is then cut into square slabs. A slab is placed in a tray (16) which is indexed between guides (17) under laterally reciprocating cutters (29) (Figs. 6-9, not shown). The cutters are mounted on a slide (28) which is reciprocated by the rotating chuck (35) of a drilling machine, and are moved downwards, cutting a row of rectangular holes in the slab (14), at each position of the slab. The slide (28) may carry more than one row of cutters (29), possibly enough to cut all the holes in one operation. The machined slab is cut to circular form and an acid slurry is passed through, depositing a layer of glass fibres of 0.05 to 3 microns diameter thereon. The former is then sealed in a peripheral flange 4, possibly with a non-rigidified polyurethane foamed protecting layer 6 over the fibrous layer. Instead of rectangular the blind holes may be circular, or the holes may be replaced by concentric corrugations.
GB1091164A 1964-03-14 1964-03-14 Improvements in or relating to filter elements Expired GB1100332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1091164A GB1100332A (en) 1964-03-14 1964-03-14 Improvements in or relating to filter elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1091164A GB1100332A (en) 1964-03-14 1964-03-14 Improvements in or relating to filter elements

Publications (1)

Publication Number Publication Date
GB1100332A true GB1100332A (en) 1968-01-24

Family

ID=9976564

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1091164A Expired GB1100332A (en) 1964-03-14 1964-03-14 Improvements in or relating to filter elements

Country Status (1)

Country Link
GB (1) GB1100332A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131319A (en) * 1982-12-03 1984-06-20 Cosworth Eng Filter element
EP0620558A1 (en) * 1993-04-12 1994-10-19 General Electric Company Debris catching arrangement for boiling water reactors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131319A (en) * 1982-12-03 1984-06-20 Cosworth Eng Filter element
EP0620558A1 (en) * 1993-04-12 1994-10-19 General Electric Company Debris catching arrangement for boiling water reactors
US5384814A (en) * 1993-04-12 1995-01-24 General Electric Company Lower tie plate strainers for boiling water reactors

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