GB1100532A - Improvements in or relating to filter elements - Google Patents

Improvements in or relating to filter elements

Info

Publication number
GB1100532A
GB1100532A GB2030563A GB2030563A GB1100532A GB 1100532 A GB1100532 A GB 1100532A GB 2030563 A GB2030563 A GB 2030563A GB 2030563 A GB2030563 A GB 2030563A GB 1100532 A GB1100532 A GB 1100532A
Authority
GB
United Kingdom
Prior art keywords
former
fibres
dies
corrugations
resin
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
GB2030563A
Inventor
Frank John Turner Harris
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 GB2030563A priority Critical patent/GB1100532A/en
Publication of GB1100532A publication Critical patent/GB1100532A/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
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/522—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with specific folds, e.g. having different lengths
    • 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
    • B01D46/0001—Making filtering elements
    • 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

Landscapes

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

Abstract

1,100,532. Filter element. EVANS, ADLARD & CO. Ltd. 19 Aug., 1964 [22 May, 1963], No. 20305/63. Heading B1T. [Also in Division B5] A gas filter comprises a woven, nylon, mesh former (Fig. 5, not shown) having concentric corrugations, on which is deposited a porous layer of randomly oriented fibres. The fibres may be glass, of 0.5-3 microns diameter and sufficiently short not to bridge the corrugations. Other suitable fibres are ceramic, vegetable or synthetic plastics. The former may have a stiffening coating of phenolic resin and an edge-sealing layer of polyvinyl chloride. Fig. 9 shows a former having 6 concentric corrugations round a flat central panel 27 and a smaller former 28 positioned within the panel, prior to depositing the fibres. In manufacture, the former is pressed between two dies (Fig. 2, not shown), the upper one comprising concentric rings which act on the former in order of increasing diameter. The former is annealed while locked between the closed dies. The stiffening resin may be applied before pressing, and itself be cured in the annealing step, or it may be applied after the former is removed from the dies, necessitating an extra, curing, heat treatment. The former(s) is then placed in a duct (Fig. 6, not shown) through which is passed a suspension of fibres in an acid solution, and a gelatinous layer is formed (by the acid) on the fibres so that they adhere together and to the former(s). A former which is not resin-coated may be radially stretched during the fibre depositing step and then allowed to resiliently close up to the desired shape. The filter is for use in respiration, e.g. a gas mask. Corrugation peaks may be more blunt on the coated side, and formed thus by beaded die rings (Fig. 4, not shown).
GB2030563A 1963-05-22 1963-05-22 Improvements in or relating to filter elements Expired GB1100532A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2030563A GB1100532A (en) 1963-05-22 1963-05-22 Improvements in or relating to filter elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2030563A GB1100532A (en) 1963-05-22 1963-05-22 Improvements in or relating to filter elements

Publications (1)

Publication Number Publication Date
GB1100532A true GB1100532A (en) 1968-01-24

Family

ID=10143784

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2030563A Expired GB1100532A (en) 1963-05-22 1963-05-22 Improvements in or relating to filter elements

Country Status (1)

Country Link
GB (1) GB1100532A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010997A1 (en) * 1980-03-21 1982-06-03 Johnson Matthey Inc., Malvern, Pa. Elliptical cylindrical metal substrate - comprises alternate layers of planar and corrugated metal foil affixed to plate mandrel for mfr.
DE3505854A1 (en) * 1984-02-20 1985-08-22 Nippondenso Co., Ltd., Kariya, Aichi METHOD AND DEVICE FOR PRODUCING A CURVED RIFLE PROFILE PART, IN PARTICULAR AN AXIAL FILTER
GB2154154A (en) * 1984-02-20 1985-09-04 Nippon Denso Co Axial-flow filter element
EP0200798A1 (en) * 1985-05-07 1986-11-12 Nippondenso Co., Ltd. Method for making a curved, corrugated article and apparatus therefor
DE4123371C1 (en) * 1991-07-15 1992-12-03 Guenther Dr.-Ing. 5927 Erndtebrueck De Kaupert Simultaneous moulding of various depressions in metal foil - uses sequentially several partial punches from work centre towards periphery
DE29607968U1 (en) * 1996-05-02 1996-10-24 Steinhauer, Björn, Dr., 77767 Appenweier Condom for hygiene purposes

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3010997A1 (en) * 1980-03-21 1982-06-03 Johnson Matthey Inc., Malvern, Pa. Elliptical cylindrical metal substrate - comprises alternate layers of planar and corrugated metal foil affixed to plate mandrel for mfr.
DE3505854A1 (en) * 1984-02-20 1985-08-22 Nippondenso Co., Ltd., Kariya, Aichi METHOD AND DEVICE FOR PRODUCING A CURVED RIFLE PROFILE PART, IN PARTICULAR AN AXIAL FILTER
GB2154154A (en) * 1984-02-20 1985-09-04 Nippon Denso Co Axial-flow filter element
US4659323A (en) * 1984-02-20 1987-04-21 Nippondenso Co., Ltd. Method for making axial-flow filters and apparatus therefor
EP0200798A1 (en) * 1985-05-07 1986-11-12 Nippondenso Co., Ltd. Method for making a curved, corrugated article and apparatus therefor
DE4123371C1 (en) * 1991-07-15 1992-12-03 Guenther Dr.-Ing. 5927 Erndtebrueck De Kaupert Simultaneous moulding of various depressions in metal foil - uses sequentially several partial punches from work centre towards periphery
DE29607968U1 (en) * 1996-05-02 1996-10-24 Steinhauer, Björn, Dr., 77767 Appenweier Condom for hygiene purposes

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